SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant To Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): ~~August~~September 25, 2003 MORGAN STANLEY CAPITAL I INC. (as Depositor, The Provident Bank as Servicer, NC Capital Corporation, as Responsible Party and Deutsche Bank National Trust Company, as Trustee). MORGAN STANLEY DEAN WITTER CAPITAL I INC CERT SER 2003 NC4 (Exact name of Registrant as specified in its Charter) DELAWARE (State or Other Jurisdiction of Incorporation) 333-83986-19 13-3291626 (Commission File Number) (I.R.S. Employer Identification No.) 1585 BROADWAY, 2ND FLOOR NEW YORK, NEW YORK 10036 (Address of principal executive offices) (Zip Code) Registrant's Telephone Number, Including Area Code: (212) 761-4700 Item 5. Other Events Attached hereto is a copy of the Monthly Remittance Statements to the Certificateholders which was derived from the monthly information submitted by the Master Servicer of the Trust to the Trustee. Item 7. Financial Statement and Exhibits Exhibits: (as noted in Item 5 above) Monthly Remittance Statement to the Certificateholders dated as of ~~August~~September 25, 2003. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized. Deutsche Bank National Trust Company, not in its individual capacity, but solely as a duly authorized agent of the Registrant pursuant to the Pooling and Servicing Agreement, dated as of April 1,2003. Date: ~~Aug~~Oct 2801, 2003 By: /s/ Katherine M. Wannenmacher Katherine M. Wannenmacher Vice President EXHIBIT INDEX DOCUMENT Monthly Remittance Statement to the Certificateholders dated as of ~~August~~September 25, 2003.

	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	August 25, 2003 Distribution
	September 25, 2003 Distribution
	Contents
			TABLE OF CONTENTS
								Page
			1.	Contents				1
			2.	Certificate Payment Report				2
			3.	Collection Account Report				4
			4.	Credit Enhancement Report				7
			5.	Collateral Report				8
			6.	Delinquency Report				11
			7.	REO Report				14
			8.	Foreclosure Report				15
			9.	Prepayment Report				16
			10.	Prepayment Detail Report				19
			11.	Realized Loss Report				21
			12.	Realized Loss Detail Report				24
			13.	Triggers, Adj. Rate Cert. and Miscellaneous Report				25
				Total Number of Pages				25
			CONTACTS
				Administrator: Jeremy Conyers
				Direct Phone Number: (714)247-6274
				Address: Deutsche Bank
				1761 E. St. Andrew Place, Santa Ana, CA 92705
				Web Site: https://www.corporatetrust.db.com/invr
				Factor Information: (800) 735-7777
				Main Phone Number: (714) 247-6000
ISSUANCE INFORMATION
	Seller:		Morgan Stanley					Cut-Off Date: April 1, 2003
	Certificate Insurer(s):							Closing Date: April 29, 2003
								First Payment Date: May 25, 2003
	Servicer(s):		Provident Bank Master Servicer
								Distribution Date: August 25, 2003
								Distribution Date: September 25, 2003
	Underwriter(s):		Morgan Stanley & Co. Inc					Record Date: ~~August~~September 2224, 2003
								July 31, 2003
								August 29, 2003
						Page 1 of 25					© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	REMIC II Series 2003-NC4
	Certificate Payment Report for August 25, 2003 Distribution
	Certificate Payment Report for September 25, 2003 Distribution
	Distribution in Dollars - Current Period
					Prior						Current
	Class	Original			Principal			Total	Realized	Deferred	Principal
Class	Type	Face Value			Balance	Interest	Principal	Distribution	Losses	Interest	Balance
					(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)
A-1	FLT, STEP	384,805,000.00			~~375~~366,~~265~~044,~~382~~303.9836	~~510~~501,~~569~~175.4066	97,~~221~~743,~~079~~611.6212	98,~~731~~244,~~649~~786.0278	-	-	~~366~~358,~~044~~300,~~303~~692.3625
A-2	FLT, STEP	131,500,000.00			~~126~~122,~~337~~044,~~324~~077.9998	~~159~~155,~~922~~538.0040	43,~~293~~621,~~247~~635.0168	43,~~453~~777,~~169~~174.0108	-	-	~~122~~118,~~044~~422,~~077~~442.9830
A-3	FLT, STEP	63,831,000.00			5956,~~754~~364,~~606~~704.7864	6663,~~891~~582.9652	32,~~389~~859,~~902~~604.1498	32,~~456~~923,~~794~~187.1050	-	-	5653,~~364~~505,~~704~~099.6467
A-4	FLT, STEP	40,000,000.00			40,000,000.00	55,~~111~~455.1156	-	55,~~111~~455.1156	-	-	40,000,000.00
M-1	MEZ, FLT,ST	40,838,000.00			40,838,000.00	69,~~277~~628.1379	-	69,~~277~~628.1379	-	-	40,838,000.00
M-2	MEZ, FLT,ST	41,595,000.00			41,595,000.00	111,~~035~~393.5472	-	111,~~035~~393.5472	-	-	41,595,000.00
M-3	MEZ, FLT,ST	13,234,000.00			13,234,000.00	39,~~316~~429.0197	-	39,~~316~~429.0197	-	-	13,234,000.00
B-1	SUB, FLT,ST	11,344,000.00			11,344,000.00	4243,~~981~~078.1684	-	4243,~~981~~078.1684	-	-	11,344,000.00
B-2	SUB, FLT,ST	7,563,000.00			7,563,000.00	31,~~586~~651.0316	-	31,~~586~~651.0316	-	-	7,563,000.00
B-3	SUB, FLT,ST	8,319,000.00			8,319,000.00	34,~~743~~815.3802	-	34,~~743~~815.3802	-	-	8,319,000.00
X	SUB	13,234,898.00			13,234,618.21	3,~~220~~135,~~476~~114.2550	-	3,~~220~~135,~~476~~114.2550	-	-	13,234,618.21
P	SUB,EXE	-			-	~~301~~288,~~353~~225.6558	-	~~301~~288,~~353~~225.6558	-	-	-
UT-R	R	-			-	-	-	-	-	-	-
Total		756,263,898.00			~~737~~720,~~484~~580,~~932~~704.9619	4,~~643~~529,~~263~~089.6272	1614,~~904~~224,~~228~~851.77	2118,~~547~~753,~~492~~941.3949	-	-	~~720~~706,~~580~~355,~~704~~852.1942
	Interest Accrual Detail				Current Period Factor Information per $1,000 of Original Face
						Orig. Principal	Prior				Current
	Period	Period				(with Notional)	Principal			Total	Principal
Class	Starting	Ending		Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
							(1)	(2)	(3)	(4)=(2)+(3)	(5)
A-1	0708/25/03	0809/24/03		A-Act/360	61746WG38	384,805,000.00	~~975~~951.~~209218~~246224	1.~~326826~~302415	2320.~~962993~~123468	2521.~~289820~~425883	~~951~~931.~~246224~~122756
A-2	0708/25/03	0809/24/03		A-Act/360	61746WF47	131,500,000.00	~~960~~928.~~740114~~091848	1.~~216137~~182802	3227.~~648266~~540956	3328.~~864403~~723757	~~928~~900.~~091848~~550892
A-3	0708/25/03	0809/24/03		A-Act/360	61746WG53	63,831,000.00	~~936~~883.~~137720~~030262	10.~~047954~~996107	5344.~~107458~~799627	5445.~~155412~~795734	~~883~~838.~~030262~~230635
A-4	0708/25/03	0809/24/03		A-Act/360	61746WG61	40,000,000.00	1,000.000000	1.~~377778~~386389	-	1.~~377778~~386389	1,000.000000
M-1	0708/25/03	0809/24/03		A-Act/360	61746WF54	40,838,000.00	1,000.000000	1.~~696389~~705000	-	1.~~696389~~705000	1,000.000000
M-2	0708/25/03	0809/24/03		A-Act/360	61746WF62	41,595,000.00	1,000.000000	2.~~669444~~678056	-	2.~~669444~~678056	1,000.000000
M-3	0708/25/03	0809/24/03		A-Act/360	61746WF70	13,234,000.00	1,000.000000	2.~~970833~~979445	-	2.~~970833~~979445	1,000.000000
B-1	0708/25/03	0809/24/03		A-Act/360	61746WF88	11,344,000.00	1,000.000000	3.~~788889~~797500	-	3.~~788889~~797500	1,000.000000
B-2	0708/25/03	0809/24/03		A-Act/360	61746WF96	7,563,000.00	1,000.000000	4.~~176389~~185001	-	4.~~176389~~185001	1,000.000000
B-3	0708/25/03	0809/24/03		A-Act/360	61746WG20	8,319,000.00	1,000.000000	4.~~176389~~185001	-	4.~~176389~~185001	1,000.000000
X	0708/25/03	0809/24/03		A-Act/360		13,234,898.00	999.978860	~~243~~236.~~332155~~882407	-	~~243~~236.~~332155~~882407	999.978860
P	0708/25/03	0809/24/03		-		-	-	-	-	-	-
UT-R	0708/25/03	0809/24/03		-		-	-	-	-	-	-
							Page 2 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	REMIC II Series 2003-NC4
	Certificate Payment Report for August 25, 2003 Distribution
	Certificate Payment Report for September 25, 2003 Distribution
	Distribution in Dollars - to Date
											Current
	Original				Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal
Class	Face Value		Interest		Principal	Principal	Principal	Distribution	Losses	Interest	Balance
	(1)		(2)		(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)
A-1	384,805,000.00		2,~~081~~582,~~689~~864.2187		1724,~~516~~941,~~897~~424.3563	1,~~243~~562,~~799~~883.2813	1826,~~760~~504,~~696~~307.6475	2029,~~842~~087,~~385~~172.8562	-	-	~~366~~358,~~044~~300,~~303~~692.3625
A-2	131,500,000.00		~~660~~815,~~250~~788.0949		812,~~810~~282,~~044~~446.3967	~~645~~795,~~877~~111.6303	913,~~455~~077,~~922~~557.0270	1013,~~116~~893,~~172~~346.1119	-	-	~~122~~118,~~044~~422,~~077~~442.9830
A-3	63,831,000.00		~~282~~345,~~401~~983.3284		69,~~956~~698,~~317~~089.2613	~~509~~627,~~978~~811.1021	710,~~466~~325,~~295~~900.3633	710,~~748~~671,~~696~~884.6817	-	-	5653,~~364~~505,~~704~~099.6467
A-4	40,000,000.00		~~221~~276,~~476~~931.3187		0.00	-	-	~~221~~276,~~476~~931.3187	-	-	40,000,000.00
M-1	40,838,000.00		~~275~~345,~~643~~272.6746		0.00	-	-	~~275~~345,~~643~~272.6746	-	-	40,838,000.00
M-2	41,595,000.00		~~434~~546,~~816~~210.4315		-	-	-	~~434~~546,~~816~~210.4315	-	-	41,595,000.00
M-3	13,234,000.00		~~153~~192,~~524~~954.9592		-	-	-	~~153~~192,~~524~~954.9592	-	-	13,234,000.00
B-1	11,344,000.00		~~166~~210,~~923~~002.4024		-	-	-	~~166~~210,~~923~~002.4024	-	-	11,344,000.00
B-2	7,563,000.00		~~122~~154,~~442~~093.5975		-	-	-	~~122~~154,~~442~~093.5975	-	-	7,563,000.00
B-3	8,319,000.00		~~134~~169,~~681~~497.9901		-	-	-	~~134~~169,~~681~~497.9901	-	-	8,319,000.00
X	13,234,898.00		1316,~~081~~216,~~824~~939.5303		244.61	34.78	279.39	1316,~~082~~217,~~103~~218.9242	-	-	13,234,618.21
P	-		~~542~~830,~~362~~588.6725		-	-	-	~~542~~830,~~362~~588.6725	-	-	-
UT-R	-		-		-	-	-	-	-	-	-
Total	756,263,898.00		1822,~~158~~687,~~037~~126.1688		3346,~~283~~922,~~503~~205.6103	2,~~399~~985,~~689~~840.8015	3549,~~683~~908,~~193~~045.4118	5372,~~841~~595,~~230~~172.5706	-	-	~~720~~706,~~580~~355,~~704~~852.1942
	Interest Detail
	Pass-	Prior Principal				Non-	Prior	Unscheduled		Paid or	Current
	Through	(with Notional)			Accrued	Supported	Unpaid	Interest	Optimal	Deferred	Unpaid
Class	Rate	Balance			Interest	Interest SF	Interest	Adjustments	Interest	Interest	Interest
					(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)
A-1	1.~~58000~~59000%	~~375~~366,~~265~~044,~~382~~303.9836			~~510~~501,~~569~~175.4066	-	-	-	~~510~~501,~~569~~175.4066	~~510~~501,~~569~~175.4066	-
A-2	1.~~47000~~48000%	~~126~~122,~~337~~044,~~324~~077.9998			~~159~~155,~~922~~538.0040	-	-	-	~~159~~155,~~922~~538.0040	~~159~~155,~~922~~538.0040	-
A-3	1.~~30000~~31000%	5956,~~754~~364,~~606~~704.7864			6663,~~891~~582.9652	-	-	-	6663,~~891~~582.9652	6663,~~891~~582.9652	-
A-4	1.~~60000~~61000%	40,000,000.00			55,~~111~~455.1156	-	-	-	55,~~111~~455.1156	55,~~111~~455.1156	-
M-1	1.~~97000~~98000%	40,838,000.00			69,~~277~~628.1379	-	-	-	69,~~277~~628.1379	69,~~277~~628.1379	-
M-2	3.~~10000~~11000%	41,595,000.00			111,~~035~~393.5472	-	-	-	111,~~035~~393.5472	111,~~035~~393.5472	-
M-3	3.~~45000~~46000%	13,234,000.00			39,~~316~~429.0197	-	-	-	39,~~316~~429.0197	39,~~316~~429.0197	-
B-1	4.~~40000~~41000%	11,344,000.00			4243,~~981~~078.1684	-	-	-	4243,~~981~~078.1684	4243,~~981~~078.1684	-
B-2	4.~~85000~~86000%	7,563,000.00			31,~~586~~651.0316	-	-	-	31,~~586~~651.0316	31,~~586~~651.0316	-
B-3	4.~~85000~~86000%	8,319,000.00			34,~~743~~815.3802	-	-	-	34,~~743~~815.3802	34,~~743~~815.3802	-
X	5.~~24020~~22098%	13,234,618.21			3,~~220~~135,~~476~~114.2550	-	-	-	3,~~220~~135,~~476~~114.2550	3,~~220~~135,~~476~~114.2550	-
P		-			~~301~~288,~~353~~225.6558	-	-	-	~~301~~288,~~353~~225.6558	~~301~~288,~~353~~225.6558	-
UT-R		-			-	-	-	-	-	-	-
Total		~~737~~720,~~484~~580,~~932~~704.9619			4,~~643~~529,~~263~~089.6272	-	-	-	4,~~643~~529,~~263~~089.6272	4,~~643~~529,~~263~~089.6272	-
							Page 3 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Collection Account Report for August 25, 2003 Distribution
	Collection Account Report for September 25, 2003 Distribution
	Collection Account Report
SUMMARY						GROUP 2	GROUP 1	TOTAL
	Principal Collections					76,~~683~~481,~~149~~240.1565	97,~~221~~743,~~079~~611.6211	1614,~~904~~224,~~228~~851.7776
	Principal Other Accounts					0.00	0.00	0.00
	TOTAL NET PRINCIPAL					76,~~683~~481,~~149~~240.1565	97,~~221~~743,~~079~~611.6211	1614,~~904~~224,~~228~~851.7776
	Interest Collections					1,~~667~~618,~~235~~511.6784	2,~~724~~662,~~334~~372.1066	4,~~391~~280,~~569~~884.7750
	Interest Withdrawals					0.00	0.00	0.00
	Interest Other Accounts					0.00	0.00	0.00
	Interest Fees					(1814,~~458~~779.9482)	(3125,~~200~~240.7938)	(4940,~~659~~020.7320)
	TOTAL NET INTEREST					1,~~648~~603,~~776~~732.7302	2,~~693~~637,~~133~~132.3128	4,~~341~~240,~~910~~864.0430
	TOTAL PRINCIPAL & INTEREST DISTRIBUTABLE					98,~~331~~084,~~925~~972.8867	1110,~~914~~380,~~212~~743.9339	2118,~~246~~465,~~138~~716.8106
	Prepayment Penalties Collected							~~301~~288,~~353~~225.6558
	TOTAL AVAILABLE FUNDS FOR DISTRIBUTION							2118,~~547~~753,~~492~~941.4664
PRINCIPAL - COLLECTIONS						GROUP 2	GROUP 1	TOTAL
	Scheduled Principal Received					~~234~~230,~~168~~259.6376	~~359~~355,~~106~~890.8059	~~593~~586,~~275~~150.4335
	Prepayments In Full					76,~~420~~392,~~830~~984.0815	87,~~828~~347,~~402~~041.5481	1613,~~249~~740,~~232~~025.6296
	Curtailments					28(142,~~150~~003.4426)	3340,~~570~~678.2871	61(101,~~720~~324.7255)
	Liquidations					0.00	0.00	0.00
	Insurance Principal					0.00	0.00	0.00
	Repurchased Principal Amounts					0.00	0.00	0.00
	Other Principal					0.00	0.00	0.00
	Total Realized Loss Of Principal					0.00	0.00	0.00
	Delinquent Principal					(~~205~~206,~~506~~078.5344)	(~~310~~315,~~222~~784.2835)	(~~515~~521,~~728~~862.8179)
	Advanced Principal					~~205~~206,~~506~~078.5344	~~310~~315,~~222~~784.2835	~~515~~521,~~728~~862.8179
	TOTAL PRINCIPAL COLLECTED					76,~~683~~481,~~149~~240.1565	97,~~221~~743,~~079~~611.6211	1614,~~904~~224,~~228~~851.7776
				Page 4 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Collection Account Report for August 25, 2003 Distribution
	Collection Account Report for September 25, 2003 Distribution
	Collection Account Report
PRINCIPAL - WITHDRAWALS						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
PRINCIPAL - OTHER ACCOUNTS						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
INTEREST - COLLECTIONS						GROUP 2	GROUP 1	TOTAL
	Scheduled Interest					1,~~765~~717,~~894~~610.4804	2,~~886~~827,~~988~~099.3813	4,~~652~~544,~~882~~709.8617
	Liquidation Interest					0.00	0.00	0.00
	Repurchased Interest					0.00	0.00	0.00
	Insurance Interest					0.00	0.00	0.00
	Other Interest					0.00	0.00	0.00
	Relief Act Interest Shortfalls					0.00	0.00	0.00
	Net Prepayment Interest Shortfalls					0.00	0.00	0.00
	Delinquent Interest					(1,~~510~~511,~~943~~497.2887)	(2,~~460~~490,~~884~~015.3811)	(34,~~971~~001,~~827~~512.6698)
	Interest Advanced					1,412,~~284~~399.4767	2,~~298~~325,~~230~~288.1064	3,~~710~~737,~~514~~688.5731
	TOTAL INTEREST COLLECTED					1,~~667~~618,~~235~~511.6784	2,~~724~~662,~~334~~372.1066	4,~~391~~280,~~569~~884.7750
				Page 5 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Collection Account Report for August 25, 2003 Distribution
	Collection Account Report for September 25, 2003 Distribution
	Collection Account Report
INTEREST - WITHDRAWALS						GROUP 2	GROUP 1	TOTAL
	Trust Fund Expenses							0.00
	Nonrecoverable Advances							0.00
	Reimbursements to Master Servicer							0.00
	TOTAL INTEREST WITHDRAWALS							0.00
INTEREST - OTHER ACCOUNTS						GROUP 2	GROUP 1	TOTAL
	TOTAL INTEREST OTHER ACCOUNTS					0.00	0.00	0.00
INTEREST - FEES						GROUP 2	GROUP 1	TOTAL
	Current Servicing Fees					1713,~~070~~429.1949	2822,~~902~~987.1181	4536,~~972~~417.30
	Trustee Fees					1,~~388~~350.7533	2,~~298~~252.6857	3,~~687~~602.4390
	TOTAL INTEREST OTHER FEES					1814,~~458~~779.9482	3125,~~200~~240.7938	4940,~~659~~020.7320
				Page 6 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Credit Enhancement Report for August 25, 2003 Distribution
	Credit Enhancement Report for September 25, 2003 Distribution
	Credit Enhancement Report
ACCOUNTS						GROUP 2	GROUP 1	TOTAL
	Excess Reserve Fund Balance (Ending)							0.00
INSURANCE						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
STRUCTURAL FEATURES						GROUP 2	GROUP 1	TOTAL
	Beginning Subordinated Amount							13,234,618.2120
	Ending Subordinated Amount							13,234,618.21
	Specified Subordinated Amount							13,234,618.21
	Senior Enhancement Percentage							1819.8927%
				Page 7 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Collateral Report for August 25, 2003 Distribution
	Collateral Report for September 25, 2003 Distribution
	Collateral Report
COLLATERAL						GROUP 2	GROUP 1	TOTAL
	Loan Count:
	Original					1557	3075	4632
	Prior					1,~~525~~499	32,~~022~~972	4,~~547~~471
	Prefunding					-	-	-
	Scheduled Paid Offs					-	-	-
	Full Voluntary Prepayments					(2622)	(5043)	(7665)
	Repurchases					-	-	-
	Liquidations					-	-	-
	Current					1,~~499~~478	2,~~972~~929	4,~~471~~407
	Principal Balance:
	Original					286,988,791.32	469,275,106.28	756,263,897.60
	Prior					~~277~~270,~~749~~066,~~596~~447.8267	~~459~~450,~~735~~514,~~336~~256.1452	~~737~~720,~~484~~580,~~932~~704.9619
	Prefunding					-	-	-
	Scheduled Principal					(~~234~~230,~~168~~259.6376)	(~~359~~355,~~106~~890.8059)	(~~593~~586,~~275~~150.4335)
	Partial and Full Voluntary Prepayments					(76,~~448~~250,980.5289)	(87,~~861~~387,~~972~~720.8252)	(1613,~~310~~638,~~953~~701.3441)
	Repurchases					-	-	-
	Liquidations					-	-	-
	Current					~~270~~263,~~066~~585,~~447~~207.6701	~~450~~442,~~514~~770,~~256~~645.5241	~~720~~706,~~580~~355,~~704~~852.1942
PREFUNDING						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
	Group 1
	Group 2
Current Prin Balance by Groups (in millions of dollars)					Total Current Principal Balance (in millions of dollars)
				Page 8 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Collateral Report for August 25, 2003 Distribution
	Collateral Report for September 25, 2003 Distribution
	Collateral Report
CHARACTERISTICS						GROUP 2	GROUP 1	TOTAL
	Weighted Average Coupon Original					7.639188%	7.541862%	7.578796%
	Weighted Average Coupon Prior					7.~~631688~~629438%	7.~~537526~~535610%	7.~~573087~~570947%
	Weighted Average Coupon Current					7.~~629438~~631944%	7.~~535610~~530325%	7.~~570947~~568411%
	Weighted Average Months to Maturity Original					343	354	350
	Weighted Average Months to Maturity Prior					~~340~~339	~~352~~351	347
	Weighted Average Months to Maturity Current					~~339~~338	~~351~~350	~~347~~346
	Weighted Avg Remaining Amortization Term Original					342	354	349
	Weighted Avg Remaining Amortization Term Prior					~~340~~339	~~352~~351	~~347~~346
	Weighted Avg Remaining Amortization Term Current					~~339~~338	~~351~~350	~~346~~345
	Weighted Average Seasoning Original					3.45	3.27	3.34
	Weighted Average Seasoning Prior					56.44	56.27	56.33
	Weighted Average Seasoning Current					67.44	67.27	67.33
Note: Original information refers to deal issue.
	Group 1
	Group 2
WAC by Groups					Total WAC
WARAT by Groups					Total WARAT
Note: Dates correspond to distribution dates.
				Page 9 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Collateral Report for August 25, 2003 Distribution
	Collateral Report for September 25, 2003 Distribution
	Collateral Report
ARM CHARACTERISTICS						GROUP 2	GROUP 1	TOTAL
	Weighted Average Margin Original					3.305%	5.530%
	Weighted Average Margin Prior					3.~~292~~289%	5.~~529~~533%
	Weighted Average Margin Current					3.~~289~~280%	5.~~533~~521%
	Weighted Average Max Rate Original					7.511%	12.459%
	Weighted Average Max Rate Prior					7.~~480~~471%	12.~~454~~463%
	Weighted Average Max Rate Current					7.~~471~~436%	12.~~463~~431%
	Weighted Average Min Rate Original					3.816%	6.512%
	Weighted Average Min Rate Prior					3.~~798~~791%	6.~~508~~511%
	Weighted Average Min Rate Current					3.~~791~~771%	6.~~511~~491%
	Weighted Average Cap Up Original					0.844%	1.291%
	Weighted Average Cap Up Prior					0.~~842~~843%	1.~~290~~291%
	Weighted Average Cap Up Current					0.~~843~~836%	1.~~291~~289%
	Weighted Average Cap Down Original					0.844%	1.291%
	Weighted Average Cap Down Prior					0.~~842~~843%	1.~~290~~291%
	Weighted Average Cap Down Current					0.~~843~~836%	1.~~291~~289%
Note: Original information refers to deal issue.
SERVICING FEES / ADVANCES						GROUP 2	GROUP 1	TOTAL
	Current Servicing Fees					1713,~~070~~429.1949	2822,~~902~~987.1181	4536,~~972~~417.30
	Delinquent Servicing Fees					9899,~~658~~098.8120	~~162~~164,~~654~~726.2847	~~261~~263,~~313~~824.0967
	TOTAL SERVICING FEES					~~115~~112,~~729~~527.0069	~~191~~187,~~556~~714.3928	~~307~~300,~~285~~241.3997
	Prepayment Interest Shortfall					1719,~~512~~263.7984	2223,~~110~~441.0250	3942,~~622~~705.8134
	Compensating Interest					(1719,~~512~~263.7984)	(2223,~~110~~441.0250)	(3942,~~622~~705.8134)
	Delinquent Servicing Fees					(9899,~~658~~098.8120)	(~~162~~164,~~654~~726.2847)	(~~261~~263,~~313~~824.0967)
	COLLECTED SERVICING FEES					1713,~~070~~429.1949	2822,~~902~~987.1181	4536,~~972~~417.30
	Aggregate Advances with respect to this Distribution					1,~~617~~618,~~791~~478.0011	2,~~608~~641,~~452~~072.3899	4,~~226~~259,~~243~~551.3810
	Current Nonrecoverable Advances					0.00	0.00	0.00
	Cumulative Nonrecoverable Advances					0.00	0.00	0.00
ADDITIONAL COLLATERAL INFORMATION						GROUP 2	GROUP 1	TOTAL
	Net Prepayment Interest Shortfall							0.00
	Net Monthly Excess Cash Flow							3,~~220~~135,~~476~~114.3266
	Ending Pool Stated Principal Balance					~~270~~263,~~066~~585,~~447~~207.6701	~~450~~442,~~514~~770,~~256~~645.5241	~~720~~706,~~580~~355,~~704~~852.1942
				Page 10 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Delinquency Report for August 25, 2003 Distribution
	Delinquency Report for September 25, 2003 Distribution
	Delinquency Report - Total
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			811,~~641~~963,~~634~~065.9166	43,~~352~~810,~~160~~010.2180	~~1,748,603.16~~-	1415,~~742~~773,~~398~~076.2846
		% Balance			1.2069%	0.6054%	0.2400%	2.0523%
		# Loans			5879	2623	11-	95102
		% # Loans			1.3079%	0.5852%	0.2500%	2.1231%
FORECLOSURE		Balance		-244,811.19	-345,298.49	-883,869.03	15,~~271~~029,~~160~~557.8640	16,~~271~~503,~~160~~536.8611
		% Balance		0.0003%	0.0005%	0.0013%	0.1871%	0.1892%
		# Loans		-2	-2	-4	932	940
		% # Loans		0.0005%	0.0005%	0.0009%	0.2073%	0.2091%
BANKRUPTCY		Balance		1,~~153~~457,~~119~~309.2851	-205,690.70	~~71,764.15~~-	52124,~~546~~232.1782	1,~~277~~787,~~429~~233.6003
		% Balance		0.1621%	0.0003%	0.0100%	0.0102%	0.1825%
		# Loans		1014	-1	1-	12	1217
		% # Loans		0.2232%	0.0002%	0.0200%	0.0205%	0.2739%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL		Balance		1,~~153~~702,~~119~~120.2870	812,~~641~~514,~~634~~054.9185	4,~~423~~693,~~924~~879.3683	35,~~072~~153,~~310~~790.1922	1724,~~290~~063,~~988~~845.7460
		% Balance		0.1624%	1.2077%	0.6166%	0.4373%	23.4041%
		# Loans		1016	5882	27	2134	~~116~~159
		% # Loans		0.2236%	1.3086%	0.6061%	0.4777%	23.5961%
Note: <1 Payment = 0-30days, 1 Payment = 31-60days, 2 Payments = 61-90days, 3+ Payments = 91+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent
Total Foreclosure					Total Bankruptcy and REO
Note: Dates correspond to distribution dates.
				Page 11 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Delinquency Report for August 25, 2003 Distribution
	Delinquency Report for September 25, 2003 Distribution
	Delinquency Report - Group 1 Group
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			58,~~740~~326,~~944~~829.9966	2,~~485~~891,~~068~~623.3594	~~571,904.92~~-	811,~~797~~218,~~918~~453.2660
		% Balance			1.2788%	0.5565%	0.1300%	12.9553%
		# Loans			3857	18	5-	6175
		% # Loans			1.2895%	0.61%	0.1700%	2.0556%
FORECLOSURE		Balance		-175,393.85	-345,298.49	-425,606.12	~~680~~1,~~367~~839,677.2382	~~680~~2,~~367~~785,976.2328
		% Balance		0.0004%	0.0008%	0.0010%	0.1542%	0.1563%
		# Loans		-1	-2	-3	415	421
		% # Loans		0.0003%	0.0007%	0.0010%	0.1351%	0.1372%
BANKRUPTCY		Balance		~~880~~1,~~129~~026,115.0943	-205,690.70	~~71,764.15~~-	52124,~~546~~232.1782	1,~~004~~356,~~439~~038.4195
		% Balance		0.2023%	0.0005%	0.0200%	0.0103%	0.2231%
		# Loans		79	-1	1-	12	912
		% # Loans		0.2431%	0.0003%	0.0300%	0.0307%	0.3041%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL		Balance		~~880~~1,~~129~~201,509.0928	58,~~740~~877,~~944~~818.9985	23,~~556~~317,~~832~~230.5006	1,~~304~~963,~~818~~910.3264	1015,~~482~~360,~~724~~468.9083
		% Balance		0.2027%	12.2701%	0.5775%	0.2944%	23.3347%
		# Loans		710	3860	1921	1017	74108
		% # Loans		0.2434%	12.2805%	0.6472%	0.3458%	23.4969%
Note: <1 Payment = 0-30days, 1 Payment = 31-60days, 2 Payments = 61-90days, 3+ Payments = 91+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent
Total Foreclosure					Total Bankruptcy and REO
Note: Dates correspond to distribution dates.
				Page 12 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Delinquency Report for August 25, 2003 Distribution
	Delinquency Report for September 25, 2003 Distribution
	Delinquency Report - Group 2 Group
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			23,~~900~~636,~~689~~236.9200	1918,~~867,091~~386.86	~~1,176,698.24~~-	54,~~944~~554,~~480~~622.0286
		% Balance			1.0738%	0.6935%	0.4400%	21.2073%
		# Loans			2022	85	6-	3427
		% # Loans			1.3349%	0.5334%	0.4000%	21.2783%
FORECLOSURE		Balance		-69,417.34	-	-458,262.91	~~590~~3,~~793~~189,879.6358	~~590~~3,~~793~~717,559.6383
		% Balance		0.0003%	0.00%	0.0017%	01.2221%	01.2241%
		# Loans		-1	-	-1	517	519
		% # Loans		0.0007%	0.00%	0.0007%	01.3315%	01.3329%
BANKRUPTCY		Balance		~~272~~431,~~990~~194.1908	-	-	-	~~272~~431,~~990~~194.1908
		% Balance		0.1016%	0.00%	0.00%	0.00%	0.1016%
		# Loans		35	-	-	-	35
		% # Loans		0.2034%	0.00%	0.00%	0.00%	0.2034%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL		Balance		~~272~~500,~~990~~611.1942	23,~~900~~636,~~689~~236.9200	1,~~867~~376,~~091~~649.8677	13,~~767~~189,~~491~~879.8758	68,~~808~~703,~~263~~376.8477
		% Balance		0.1019%	1.0738%	0.6952%	01.6521%	23.5230%
		# Loans		36	2022	86	1117	4251
		% # Loans		0.2041%	1.3349%	0.5341%	01.7315%	23.8045%
Note: <1 Payment = 0-30days, 1 Payment = 31-60days, 2 Payments = 61-90days, 3+ Payments = 91+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent
Total Foreclosure					Total Bankruptcy and REO
Note: Dates correspond to distribution dates.
				Page 13 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	REO Report for August 25, 2003 Distribution
	REO Report for September 25, 2003 Distribution
	REO Report - Mortgage Loans that Become REO During Current Distribution
SUMMARY				LOAN GROUP
Total Loan Count = 0				Loan Group 1 = Group 1 Group; REO Book Value = 000.00
Total Original Principal Balance = 000.00				Loan Group 2 = Group 2 Group; REO Book Value = 000.00
Total Current Balance = 000.00
REO Book Value = 000.00
REO Book Value reported corresponds to total REO loans, including loans that become REO during current distribution.
Loan Number		Original	Stated		Current	State &
&		Principal	Principal	Paid to	Note	LTV at	Original	Origination
Loan Group		Balance	Balance	Date	Rate	Origination	Term	Date
SPACE INTENTIONALLY LEFT BLANK
				Page 14 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Foreclosure Report for August 25, 2003 Distribution
	Foreclosure Report for September 25, 2003 Distribution
	Foreclosure Report - Mortgage Loans that Become Foreclosure During Current Distribution
SUMMARY				LOAN GROUP
Total Loan Count = 9				Loan Group 1 = Group 1 Group
Total Loan Count = 31				Loan Group 1 = Group 1 Group
Total Original Principal Balance = 1,277,890.00				Loan Group 2 = Group 2 Group
Total Original Principal Balance = 5,261,185.00				Loan Group 2 = Group 2 Group
Total Current Balance = 1,271,160.86
Total Current Balance = 5,233,545.86
Loan Number		Original	Stated		Current	State &
&		Principal	Principal	Paid to	Note	LTV at	Original	Origination
Loan Group		Balance	Balance	Date	Rate	Origination	Term	Date
785645 1		152,640.00	152,169.05	Mar-01-03	8.500%	CA - 80.00%	360	Jan-31-03
751796 1		92,400.00	91,718.89	Apr-01-03	6.500%	NM - 70.00%	360	Jan-17-03
787225 1		200,000.00	198,952.16	Mar-01-03	6.750%	CA - 51.95%	360	Jan-24-03
757889 1		144,500.00	143,704.35	May-01-03	7.990%	CO - 85.00%	360	Dec-23-02
790938 1		257,850.00	256,846.30	Mar-01-03	8.250%	CA - 85.00%	360	Jan-30-03
761705 1		42,400.00	42,147.39	Mar-01-03	7.750%	AL - 80.00%	360	Dec-23-02
796558 1		72,800.00	72,399.71	Mar-01-03	6.500%	CA - 80.00%	360	Jan-30-03
771973 1		176,375.00	175,393.85	Aug-01-03	7.250%	NV - 85.00%	360	Jan-31-03
754931 2		28,000.00	27,363.32	Mar-01-03	10.500%	OR - 20.00%	180	Nov-29-02
772111 1		104,000.00	103,329.79	Apr-01-03	6.490%	WA - 80.00%	360	Jan-13-03
761894 2		46,600.00	46,110.90	Mar-01-03	10.990%	CA - 20.00%	240	Dec-24-02
772743 1		199,500.00	198,277.11	May-01-03	6.750%	WA - 70.00%	360	Jan-16-03
784239 2		360,000.00	358,349.65	Feb-01-03	6.500%	CA - 80.00%	360	Jan-06-03
778812 1		137,250.00	136,590.63	Jun-01-03	7.990%	IL - 90.00%	360	Jan-15-03
784253 2		90,000.00	89,466.89	Feb-01-03	10.990%	CA - 20.00%	240	Jan-06-03
779673 1		77,600.00	77,202.52	Apr-01-03	8.750%	FL - 80.00%	360	Dec-31-02
798430 2		70,000.00	69,502.87	Mar-01-03	10.990%	CA - 20.00%	240	Jan-30-03
781943 1		210,000.00	208,707.86	Jun-01-03	7.430%	WA - 75.00%	360	Jan-31-03
783656 1		73,950.00	73,604.26	Apr-01-03	8.250%	IA - 85.00%	360	Jan-24-03
783787 1		240,000.00	238,743.45	Apr-01-03	7.750%	CA - 76.19%	360	Jan-31-03
785473 1		134,300.00	133,775.98	Apr-01-03	8.250%	MS - 85.00%	360	Jan-29-03
789918 1		84,000.00	83,624.66	May-01-03	8.350%	MI - 80.00%	360	Jan-31-03
792942 1		147,200.00	146,799.34	Feb-01-03	10.000%	IL - 80.00%	360	Jan-29-03
793612 1		115,000.00	114,619.12	Apr-01-03	9.800%	CA - 69.70%	360	Jan-27-03
801824 1		93,600.00	93,093.62	Mar-01-03	7.750%	CO - 80.00%	360	Jan-31-03
806116 1		44,910.00	44,789.45	Apr-01-03	10.820%	TX - 90.00%	360	Jan-31-03
729568 2		500,000.00	497,509.93	Feb-01-03	8.490%	DC - 83.33%	360	Dec-23-02
744015 2		120,000.00	119,433.30	Apr-01-03	8.750%	WA - 60.00%	360	Dec-18-02
746468 2		460,800.00	458,262.91	May-01-03	7.990%	TX - 90.00%	360	Dec-09-02
755909 2		467,500.00	464,364.86	Apr-01-03	6.990%	CA - 85.00%	360	Dec-11-02
762559 2		600,000.00	596,175.38	Apr-01-03	7.250%	CA - 88.63%	360	Dec-30-02
766125 2		37,500.00	37,374.46	Mar-01-03	9.750%	NY - 75.00%	360	Jan-10-03
776664 2		27,200.00	26,940.00	Apr-01-03	10.990%	WA - 20.00%	240	Jan-07-03
787154 2		440,000.00	438,314.36	Apr-01-03	9.100%	NY - 80.00%	360	Jan-31-03
787343 2		39,950.00	39,771.56	Apr-01-03	8.350%	FL - 85.00%	360	Jan-24-03
789114 2		42,500.00	42,351.72	Mar-01-03	9.650%	IL - 85.00%	360	Jan-22-03
793265 2		168,750.00	168,213.02	Mar-01-03	9.990%	TX - 75.00%	360	Jan-16-03
794636 2		52,000.00	51,879.90	Mar-01-03	11.500%	TX - 80.00%	360	Jan-31-03
799153 2		111,000.00	110,494.17	Apr-01-03	8.250%	TX - 62.01%	360	Jan-31-03
802741 2		77,000.00	76,338.02	Apr-01-03	10.740%	CA - 20.00%	240	Jan-31-03
				Page 15 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Prepayment Report for August 25, 2003 Distribution
	Prepayment Report for September 25, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENTS						GROUP 2	GROUP 1	TOTAL
	Current
	Number of Paid in Full Loans					2622	5043	7665
	Number of Repurchased Loans					-	-	-
	Total Number of Loans Prepaid in Full					2622	5043	7665
	Paid in Full Balance					76,~~420~~392,~~830~~984.0815	87,~~828~~347,~~402~~041.5481	1613,~~249~~740,~~232~~025.6296
	Repurchased Loans Balance					-	-	-
	Curtailments Amount					28(142,~~150~~003.4426)	3340,~~570~~678.2871	61(101,~~720~~324.7255)
	Total Prepayment Amount					76,~~448~~250,980.5289	87,~~861~~387,~~972~~720.8252	1613,~~310~~638,~~953~~701.3441
	Cumulative
	Number of Paid in Full Loans					5880	~~103~~146	~~161~~226
	Number of Repurchased Loans					-	-	-
	Total Number of Loans Prepaid in Full					5880	~~103~~146	~~161~~226
	Paid in Full Balance					1522,~~857~~250,~~356~~340.1025	1724,~~191~~538,~~304~~346.9677	3346,~~048~~788,~~661~~687.0602
	Repurchased Loans Balance					-	-	-
	Curtailments Amount					~~113~~(28,~~646~~356.7254)	~~121~~161,~~195~~874.8253	~~234~~133,~~842~~517.5499
	Total Prepayment Amount					1522,~~971~~221,~~002~~983.8271	1724,~~312~~700,~~500~~221.7830	3346,~~283~~922,~~503~~205.6001
SPACE INTENTIONALLY LEFT BLANK
Total Prepayments by Groups (in thousands of dollars)					Total Prepayments (in thousands of dollars)
				Page 16 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Prepayment Report for August 25, 2003 Distribution
	Prepayment Report for September 25, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENT RATES						GROUP 2	GROUP 1	TOTAL
	SMM					2.6832%	1.9364%	21.2189%
	3 Months Avg SMM					12.6708%	1.0946%	1.3169%
	12 Months Avg SMM
	Avg SMM Since Cut-off					1.4260%	01.9408%	1.1228%
	CPR					2724.8652%	2018.8401%	2320.5651%
	3 Months Avg CPR					1822.3229%	1216.2917%	1418.6252%
	12 Months Avg CPR
	Avg CPR Since Cut-off					1517.8264%	1012.6920%	1214.6629%
	PSA					~~2164~~1648.1330%	~~1663~~1238.0598%	~~1860~~1398.5360%
	3 Months Avg PSA Approximation					~~1684~~1731.0925%	~~1166~~1289.3350%	~~1370~~1462.1243%
	12 Months Avg PSA Approximation
	Avg PSA Since Cut-off Approximation					~~1600~~1620.8586%	~~1120~~1157.4392%	~~1309~~1339.3144%
	Group 1
	Group 2
CPR by Groups					Total CPR
PSA by Groups					Total PSA
				Page 17 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Prepayment Report for August 25, 2003 Distribution
	Prepayment Report for September 25, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
	Group 1
	Group 2
CPR Avg since Cut-Off by Groups					Total CPR Avg since Cut-Off
PSA Avg since Cut-Off by Groups					Total PSA Avg since Cut-Off
PREPAYMENT CALCULATION METHODOLOGY
Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases)/(Beg Principal Balance - Sched Principal)
Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)
PSA Standard Prepayment Model: CPR/(0.02*min(30,WAS))
Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn) * (1-SMMn+1) .......(1-SMMm)]^(1/months in period n,m)
Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^12)
Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.02*Avg WASn,m))
Average WASn,m: (min(30,WASn)+min(30,WASn+1)+.......+min(30,WASm)/(number of months in the period n,m)
Weighted Average Seasoning (WAS)
Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments and repurchases.
Dates correspond to distribution dates.
				Page 18 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Prepayment Detail Report for August 25, 2003 Distribution
	Prepayment Detail Report for September 25, 2003 Distribution
	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution
SUMMARY						LOAN GROUP
Total Loan Count = 76						Loan Group 1 = Group 1 Group
Total Loan Count = 65						Loan Group 1 = Group 1 Group
Total Original Principal Balance = 16,317,306.00						Loan Group 2 = Group 2 Group
Total Original Principal Balance = 13,815,100.00						Loan Group 2 = Group 2 Group
Total Prepayment Amount = 16,249,232.62
Total Prepayment Amount = 13,740,025.96
Loan Number			Original			Current	State &	Type Prepayment
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	&	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Original Term	Date
713373 1			131,750.00	131,420.78	Jul-02-03	9.500%	MA - 85.00%	Paid Off - 360	Jan-14-03
746612 1			190,000.00	188,555.02	Aug-26-03	6.875%	NC - 79.17%	Paid Off - 360	Dec-04-02
717543 1			320,000.00	317,732.02	Jul-31-03	5.990%	CA - 78.05%	Paid Off - 360	Dec-06-02
764252 1			204,850.00	203,702.08	Aug-08-03	7.250%	NJ - 85.00%	Paid Off - 360	Dec-31-02
748475 1		FCL	241,400.00	240,251.76	Jul-11-03	7.650%	CA - 69.97%	Paid Off - 360	Dec-31-02
764629 1			116,000.00	115,611.81	Aug-12-03	8.990%	ME - 80.00%	Paid Off - 360	Jan-07-03
754202 1			306,450.00	304,906.29	Jul-31-03	7.750%	CA - 90.00%	Paid Off - 360	Dec-03-02
764976 1			240,000.00	238,664.90	Aug-30-03	7.250%	CA - 80.00%	Paid Off - 360	Dec-31-02
756214 1			236,000.00	234,932.54	Jul-09-03	7.500%	NH - 76.13%	Paid Off - 360	Dec-19-02
765491 1			95,200.00	94,695.46	Aug-08-03	7.500%	WA - 85.00%	Paid Off - 360	Dec-30-02
756437 1			213,500.00	212,510.12	Jul-16-03	7.375%	NY - 70.00%	Paid Off - 360	Dec-20-02
766143 1			50,000.00	49,576.04	Aug-22-03	7.750%	OH - 51.62%	Paid Off - 360	Dec-23-02
759606 1			270,400.00	269,074.00	Jul-25-03	7.500%	MD - 80.00%	Paid Off - 360	Dec-24-02
766770 1			145,000.00	144,193.67	Aug-01-03	7.250%	CA - 58.70%	Paid Off - 360	Dec-31-02
761259 1			292,350.00	290,986.36	Jul-30-03	7.750%	CA - 84.99%	Paid Off - 360	Dec-27-02
767156 1			138,400.00	137,591.84	Aug-07-03	7.000%	FL - 80.00%	Paid Off - 360	Dec-31-02
764129 1			225,250.00	224,496.19	Jul-03-03	8.990%	CA - 85.00%	Paid Off - 360	Jan-03-03
767486 1			258,900.00	257,837.99	Aug-08-03	7.990%	CA - 49.69%	Paid Off - 360	Jan-08-03
765660 1			50,400.00	50,171.58	Jul-22-03	7.490%	OH - 70.00%	Paid Off - 360	Dec-18-02
770374 1			144,900.00	144,092.62	Aug-26-03	7.240%	DE - 89.98%	Paid Off - 360	Dec-19-02
765927 1			77,000.00	76,611.97	Jul-31-03	6.950%	FL - 73.33%	Paid Off - 360	Dec-27-02
774210 1			91,000.00	90,726.05	Aug-21-03	9.500%	MA - 45.05%	Paid Off - 360	Jan-13-03
767622 1			77,000.00	76,576.61	Jul-10-03	6.500%	MI - 64.17%	Paid Off - 360	Dec-23-02
775106 1			312,000.00	310,501.88	Aug-06-03	7.990%	CA - 80.00%	Paid Off - 360	Dec-24-02
767672 1			130,000.00	129,429.25	Jul-25-03	7.650%	MA - 53.06%	Paid Off - 360	Dec-30-02
775719 1			225,000.00	223,733.22	Aug-30-03	6.750%	IL - 94.94%	Paid Off - 360	Jan-07-03
767706 1			259,000.00	257,769.25	Jul-31-03	7.250%	CA - 69.07%	Paid Off - 360	Jan-06-03
775730 1			74,000.00	73,777.19	Aug-08-03	9.500%	FL - 68.52%	Paid Off - 360	Jan-10-03
770860 1			165,000.00	164,342.10	Jul-10-03	7.200%	OR - 38.55%	Paid Off - 360	Jan-21-03
775743 1			168,750.00	168,074.95	Aug-11-03	8.890%	MI - 75.00%	Paid Off - 360	Dec-30-02
771080 1			109,600.00	109,295.51	Jul-25-03	8.990%	CA - 80.00%	Paid Off - 360	Jan-27-03
779426 1			157,500.00	156,634.04	Aug-22-03	6.500%	WA - 75.00%	Paid Off - 360	Jan-06-03
772156 1			301,500.00	300,525.40	Jul-29-03	8.250%	MD - 90.00%	Paid Off - 360	Jan-15-03
779794 1			126,000.00	125,281.88	Aug-13-03	6.990%	AZ - 90.00%	Paid Off - 360	Jan-15-03
775645 1			284,000.00	283,436.98	Jul-11-03	10.600%	CA - 80.00%	Paid Off - 360	Jan-15-03
781577 1			65,000.00	64,705.39	Aug-13-03	7.490%	MN - 40.12%	Paid Off - 360	Jan-31-03
778489 1			208,250.00	207,467.49	Aug-01-03	7.500%	CO - 85.00%	Paid Off - 360	Jan-10-03
781762 1			92,800.00	92,505.67	Aug-13-03	9.250%	MI - 80.00%	Paid Off - 360	Jan-10-03
779122 1			160,000.00	159,283.21	Jul-29-03	7.500%	CA - 80.00%	Paid Off - 360	Jan-15-03
783052 1			276,250.00	275,034.38	Aug-26-03	7.990%	NY - 85.00%	Paid Off - 360	Jan-29-03
780766 1			96,900.00	96,638.16	Jul-11-03	9.125%	MI - 85.00%	Paid Off - 360	Jan-23-03
783055 1			375,000.00	373,109.90	Aug-11-03	6.990%	CA - 66.37%	Paid Off - 360	Jan-10-03
780941 1			245,650.00	244,363.03	Jul-02-03	6.750%	CA - 76.53%	Paid Off - 360	Jan-28-03
783570 1			231,300.00	230,136.57	Aug-14-03	6.990%	IL - 90.00%	Paid Off - 360	Jan-29-03
781153 1			168,000.00	167,301.97	Jul-16-03	6.990%	CA - 78.50%	Paid Off - 360	Jan-14-03
783902 1			106,500.00	106,064.03	Aug-13-03	8.000%	MI - 75.00%	Paid Off - 360	Jan-08-03
782693 1			109,800.00	109,539.10	Jul-16-03	9.740%	IL - 90.00%	Paid Off - 360	Jan-14-03
783922 1			202,500.00	201,014.16	Aug-13-03	6.500%	CA - 90.00%	Paid Off - 360	Jan-15-03
782724 1			79,900.00	79,432.69	Jul-02-03	6.250%	MO - 85.00%	Paid Off - 360	Jan-13-03
784610 1			324,000.00	322,671.01	Aug-29-03	7.990%	CA - 58.91%	Paid Off - 360	Jan-30-03
783740 1			129,000.00	128,515.28	Jul-21-03	7.500%	AR - 67.89%	Paid Off - 360	Jan-10-03
785225 1			130,000.00	129,466.75	Aug-22-03	7.990%	CA - 78.79%	Paid Off - 360	Jan-09-03
783791 1			105,600.00	105,240.24	Jul-31-03	7.990%	MO - 80.00%	Paid Off - 360	Jan-16-03
785482 1			143,000.00	142,175.19	Aug-14-03	6.250%	CA - 58.61%	Paid Off - 360	Jan-15-03
784024 1			189,375.00	188,333.79	Jul-29-03	6.500%	CA - 75.00%	Paid Off - 360	Jan-08-03
786451 1			110,000.00	109,501.33	Aug-04-03	7.650%	NY - 42.31%	Paid Off - 360	Jan-14-03
784220 1			189,750.00	189,322.28	Jul-16-03	9.990%	CA - 75.00%	Paid Off - 360	Jan-10-03
786464 1			107,500.00	106,947.59	Aug-13-03	6.850%	MO - 67.19%	Paid Off - 360	Jan-27-03
784925 1			194,750.00	194,052.37	Jul-18-03	7.750%	IL - 95.00%	Paid Off - 360	Jan-14-03
786821 1			196,800.00	195,717.98	Aug-25-03	6.500%	CA - 80.00%	Paid Off - 360	Jan-30-03
785519 1			165,416.00	164,716.56	Jul-18-03	6.900%	IL - 88.93%	Paid Off - 360	Jan-21-03
787697 1			171,750.00	171,114.56	Aug-14-03	8.500%	IL - 83.78%	Paid Off - 360	Jan-17-03
785632 1			206,000.00	205,012.45	Jul-30-03	6.250%	CA - 54.21%	Paid Off - 360	Jan-31-03
787791 1			204,000.00	203,094.93	Aug-05-03	7.600%	VA - 85.00%	Paid Off - 360	Jan-31-03
785842 1			110,400.00	110,043.13	Jul-11-03	8.250%	CA - 80.00%	Paid Off - 360	Jan-31-03
788720 1			129,600.00	129,118.48	Aug-13-03	8.500%	MI - 80.00%	Paid Off - 360	Jan-30-03
785894 1			174,200.00	173,364.90	Jul-24-03	6.250%	IL - 84.98%	Paid Off - 360	Jan-21-03
790005 1			225,900.00	224,770.41	Aug-28-03	6.990%	CA - 90.00%	Paid Off - 360	Jan-14-03
786090 1			141,950.00	141,361.38	Jul-10-03	7.000%	MN - 85.00%	Paid Off - 360	Jan-07-03
791288 1			112,600.00	112,036.96	Aug-18-03	6.990%	RI - 78.74%	Paid Off - 360	Jan-17-03
786105 1			157,500.00	157,016.12	Aug-01-03	8.500%	CA - 70.00%	Paid Off - 360	Jan-31-03
793055 1			140,000.00	139,507.76	Aug-04-03	8.750%	IL - 69.31%	Paid Off - 360	Jan-30-03
787473 1			130,475.00	130,053.22	Jul-02-03	8.250%	MT - 85.00%	Paid Off - 360	Jan-08-03
794550 1			216,000.00	215,113.98	Aug-15-03	7.990%	CA - 53.33%	Paid Off - 360	Jan-31-03
789142 1			317,475.00	316,497.65	Jul-30-03	8.490%	IL - 85.00%	Paid Off - 360	Jan-24-03
796218 1			250,000.00	249,096.16	Aug-06-03	8.615%	CA - 74.63%	Paid Off - 360	Jan-30-03
791064 1			208,800.00	208,015.45	Jul-30-03	7.500%	CA - 90.00%	Paid Off - 360	Jan-29-03
796700 1			83,300.00	83,050.79	Aug-25-03	9.600%	MI - 85.00%	Paid Off - 360	Jan-29-03
791067 1			41,000.00	40,912.51	Jul-16-03	10.250%	MI - 22.78%	Paid Off - 360	Jan-23-03
799038 1			144,000.00	143,528.91	Aug-28-03	9.100%	IL - 80.00%	Paid Off - 360	Jan-29-03
791245 1			63,350.00	63,159.28	Jul-17-03	8.600%	ME - 69.62%	Paid Off - 360	Jan-31-03
801564 1			160,000.00	159,365.98	Aug-04-03	7.240%	CA - 80.00%	Paid Off - 360	Jan-31-03
791286 1			199,500.00	198,835.22	Aug-01-03	8.100%	ME - 84.89%	Paid Off - 360	Jan-21-03
802184 1			155,000.00	154,277.05	Aug-15-03	7.750%	CA - 59.62%	Paid Off - 360	Jan-29-03
791820 1			72,250.00	72,072.66	Jul-03-03	9.703%	CA - 60.21%	Paid Off - 360	Jan-31-03
804367 1			292,000.00	290,665.27	Aug-25-03	7.450%	CA - 89.85%	Paid Off - 360	Jan-31-03
792074 1			217,000.00	216,537.16	Jul-07-03	10.250%	CA - 70.00%	Paid Off - 360	Jan-31-03
738490 2			399,000.00	396,990.10	Aug-14-03	7.750%	MI - 86.74%	Paid Off - 360	Dec-11-02
					Page 19 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Prepayment Detail Report for August 25, 2003 Distribution
	Prepayment Detail Report for September 25, 2003 Distribution
	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution
Loan Number			Original			Current	State &
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Term	Date
793177 1			172,000.00	171,286.74	Jul-21-03	7.000%	MA - 80.00%	Paid Off - 360	Jan-27-03
749115 2			357,000.00	355,250.39	Aug-11-03	7.890%	MI - 85.00%	Paid Off - 360	Dec-30-02
793493 1			115,000.00	114,675.35	Jul-31-03	8.990%	TX - 41.52%	Paid Off - 360	Jan-31-03
752468 2			384,750.00	382,810.28	Aug-13-03	7.800%	CA - 85.50%	Paid Off - 360	Dec-20-02
793553 1			310,250.00	309,025.12	Jul-03-03	7.250%	CA - 85.00%	Paid Off - 360	Jan-31-03
760859 2			380,000.00	378,914.42	Aug-13-03	9.750%	TX - 80.00%	Paid Off - 360	Jan-14-03
795835 1			129,500.00	129,105.81	Jul-08-03	9.250%	CA - 70.00%	Paid Off - 360	Jan-29-03
764334 2			256,000.00	254,710.42	Aug-26-03	7.750%	NV - 80.00%	Paid Off - 360	Dec-31-02
796878 1			176,000.00	174,156.63	Jul-31-03	9.990%	MD - 80.00%	Paid Off - 360	Jan-31-03
764881 2			418,000.00	415,992.93	Aug-04-03	7.990%	CA - 95.00%	Paid Off - 360	Dec-13-02
800156 1			189,000.00	188,596.85	Jul-25-03	10.250%	CA - 90.00%	Paid Off - 360	Jan-30-03
766017 2			399,000.00	393,068.13	Aug-27-03	6.990%	CO - 70.00%	Paid Off - 360	Dec-17-02
702277 2			348,500.00	348,497.88	Jul-31-03	6.300%	CA - 85.00%	Paid Off - 300	Oct-30-02
772814 2			384,000.00	382,079.88	Aug-21-03	6.990%	CA - 80.00%	Paid Off - 360	Jan-30-03
745117 2			158,000.00	157,319.97	Jul-03-03	7.750%	VA - 61.72%	Paid Off - 360	Dec-19-02
777600 2			117,600.00	117,392.49	Aug-14-03	11.990%	VA - 70.00%	Paid Off - 360	Jan-14-03
754434 2			327,165.00	325,250.82	Jul-03-03	6.990%	CA - 85.00%	Paid Off - 360	Dec-04-02
781115 2			140,000.00	139,334.72	Aug-25-03	7.250%	CA - 63.06%	Paid Off - 360	Jan-17-03
763063 2			62,250.00	61,103.18	Jul-15-03	7.490%	TX - 75.00%	Paid Off - 180	Dec-13-02
782917 2			212,500.00	211,603.53	Aug-28-03	7.850%	CA - 85.00%	Paid Off - 360	Jan-29-03
763490 2			375,000.00	373,218.01	Jul-21-03	7.250%	CA - 56.82%	Paid Off - 360	Dec-27-02
784776 2			135,000.00	134,386.32	Aug-18-03	7.500%	CA - 90.00%	Paid Off - 360	Jan-23-03
763853 2			480,000.00	478,028.55	Jul-22-03	7.990%	CA - 84.14%	Paid Off - 360	Dec-13-02
784999 2			468,800.00	465,088.97	Aug-13-03	7.000%	IL - 87.27%	Paid Off - 360	Jan-14-03
764855 2			463,500.00	461,182.39	Jul-07-03	6.990%	CA - 90.00%	Paid Off - 360	Dec-19-02
787348 2			325,000.00	323,669.51	Aug-13-03	8.000%	CA - 83.33%	Paid Off - 360	Jan-31-03
765037 2			747,000.00	743,086.40	Jul-25-03	6.750%	CA - 74.70%	Paid Off - 360	Dec-26-02
790813 2			405,000.00	396,885.41	Aug-18-03	6.500%	NY - 90.00%	Paid Off - 180	Jan-29-03
766534 2			35,000.00	34,482.60	Jul-31-03	10.000%	CA - 16.43%	Paid Off - 180	Dec-27-02
791018 2			128,500.00	128,197.79	Aug-27-03	11.990%	CA - 57.11%	Paid Off - 360	Jan-30-03
766996 2			370,000.00	367,965.66	Jul-30-03	6.500%	FL - 72.55%	Paid Off - 360	Dec-30-02
792498 2			70,200.00	69,945.46	Aug-06-03	8.600%	AL - 90.00%	Paid Off - 360	Jan-23-03
768326 2			83,700.00	83,356.06	Jul-08-03	7.990%	MS - 90.00%	Paid Off - 360	Dec-17-02
793108 2			440,000.00	438,530.65	Aug-29-03	9.000%	CA - 80.00%	Paid Off - 360	Jan-29-03
777224 2			62,000.00	61,559.22	Aug-01-03	10.990%	CA - 20.00%	Paid Off - 240	Jan-02-03
793593 2			236,250.00	235,426.18	Aug-29-03	8.790%	CA - 75.00%	Paid Off - 360	Jan-22-03
783040 2			313,000.00	311,881.03	Jul-15-03	7.750%	NJ - 89.43%	Paid Off - 360	Jan-21-03
795710 2			400,000.00	398,578.62	Aug-15-03	8.750%	CA - 68.61%	Paid Off - 360	Jan-22-03
784963 2			135,000.00	134,467.03	Jul-08-03	7.250%	IL - 50.94%	Paid Off - 360	Jan-31-03
798018 2			149,500.00	148,823.78	Aug-04-03	7.500%	CA - 65.00%	Paid Off - 360	Jan-28-03
785681 2			169,000.00	166,471.03	Jul-23-03	7.750%	NY - 37.56%	Paid Off - 180	Jan-31-03
802813 2			226,700.00	225,304.17	Aug-19-03	7.990%	CO - 55.29%	Paid Off - 360	Jan-30-03
786014 2			284,000.00	283,032.44	Jul-10-03	7.990%	CA - 84.78%	Paid Off - 360	Jan-31-03
786584 2			185,250.00	184,553.91	Jul-31-03	7.500%	FL - 65.00%	Paid Off - 360	Jan-31-03
787647 2			108,800.00	107,464.23	Jul-23-03	9.990%	IN - 85.00%	Paid Off - 180	Jan-15-03
790022 2			46,600.00	46,289.16	Jul-29-03	10.740%	NV - 20.00%	Paid Off - 240	Jan-30-03
792472 2			552,500.00	551,963.32	Jul-28-03	4.920%	CA - 85.00%	Paid Off - 300	Jan-31-03
792662 2			350,000.00	349,173.62	Jul-07-03	9.770%	IL - 73.22%	Paid Off - 360	Jan-18-03
795157 2			464,350.00	462,923.41	Jul-16-03	8.500%	TX - 84.12%	Paid Off - 360	Jan-30-03
795408 2			238,000.00	237,602.03	Jul-22-03	11.380%	NY - 70.00%	Paid Off - 360	Jan-31-03
797640 2			590,000.00	587,552.51	Jul-23-03	7.000%	CA - 71.95%	Paid Off - 360	Jan-30-03
797822 2			327,250.00	326,269.96	Aug-01-03	8.625%	CA - 85.00%	Paid Off - 360	Jan-31-03
798042 2			176,800.00	176,135.65	Jul-28-03	7.500%	CA - 65.00%	Paid Off - 360	Jan-28-03
					Page 20 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Realized Loss Report for August 25, 2003 Distribution
	Realized Loss Report for September 25, 2003 Distribution
	Realized Loss Report - Collateral
COLLATERAL REALIZED LOSSES						GROUP 2	GROUP 1	TOTAL
	Current
	Number of Loans Liquidated					-	-	-
	Collateral Realized Loss/(Gain) Amount					-	-	-
	Net Liquidation Proceeds					-	-	-
	Cumulative
	Number of Loans Liquidated					-	-	-
	Collateral Realized Loss/(Gain) Amount					-	-	-
	Net Liquidation Proceeds					-	-	-
	Note: Collateral Realized Loss Amount may include adjustments to loans liquidated in prior periods.
	Cumulative Loss Percentage							0.00%
	Group 1						3 Months Moving Average
	Group 2
Collateral Loss Severity Approximation by Groups					Collateral Loss Severity Approximation
				Page 21 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Realized Loss Report for August 25, 2003 Distribution
	Realized Loss Report for September 25, 2003 Distribution
	Realized Loss Report - Collateral
DEFAULT SPEEDS						GROUP 2	GROUP 1	TOTAL
	MDR					0.00%	0.00%	0.00%
	3 Months Avg MDR					0.00%	0.00%	0.00%
	12 Months Avg MDR
	Avg MDR Since Cut-off					0.00%	0.00%	0.00%
	CDR					0.00%	0.00%	0.00%
	3 Months Avg CDR					0.00%	0.00%	0.00%
	12 Months Avg CDR
	Avg CDR Since Cut-off					0.00%	0.00%	0.00%
	SDA					0.00%	0.00%	0.00%
	3 Months Avg SDA Approximation					0.00%	0.00%	0.00%
	12 Months Avg SDA Approximation
	Avg SDA Since Cut-off Approximation					0.00%	0.00%	0.00%
	Loss Severity Approximation for Current Period
	3 Months Avg Loss Severity Approximation
	12 Months Avg Loss Severity Approximation
	Avg Loss Severity Approximation Since Cut-off
	Group 1
	Group 2
CDR by Groups					Total CDR
SDA by Groups					Total SDA
				Page 22 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Realized Loss Report for August 25, 2003 Distribution
	Realized Loss Report for September 25, 2003 Distribution
	Realized Loss Report - Collateral
	Group 1
	Group 2
CDR Avg since Cut-Off by Groups					Total CDR Avg since Cut-Off
SDA Avg since Cut-Off by Groups					Total SDA Avg since Cut-Off
COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY
Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)
Conditional Default Rate (CDR): 1-((1-MDR)^12)
SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)0.02,MAX(0.03,MIN(30,WAS)0.02-0.0095*(WAS-60)))
Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn) * (1-MDRn+1) .......(1-MDRm)]^(1/months in period n,m)
Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)
Average SDA Approximation over period between the nth month and mth month:
AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)0.02,MAX(0.03,MIN(30,Avg WASn,m)0.02-0.0095*(Avg WASn,m-60)))
Average WASn,m: (WASn + WASn+1 +.......+ WASm )/(number of months in the period n,m)
Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)
Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,m)
Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.
Dates correspond to distribution dates.
				Page 23 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Realized Loss Detail Report for August 25, 2003 Distribution
	Realized Loss Detail Report for September 25, 2003 Distribution
	Realized Loss Detail Report - Loans Liquidated During Current Distribution
SUMMARY						LOAN GROUP
Total Loan Count = 0						Loan Group 1 = Group 1 Group
Total Original Principal Balance = 0.00						Loan Group 2 = Group 2 Group
Total Prior Principal Balance = 0.00
Total Realized Loss Amount = 0.00
Total Net Liquidation Proceeds = 0.00
Note: Total Realized Loss Amount may include adjustments to loans liquidated in prior periods.
Loan Number			Original	Prior		Current	State &
&		Loan	Principal	Principal	Realized	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Balance	Loss/(Gain)	Rate	Origination	Term	Date
SPACE INTENTIONALLY LEFT BLANK
					Page 24 of 25				© COPYRIGHT 2003 Deutsche Bank
	Morgan Stanley Dean Witter Capital I Inc. 2003-NC4
	Mortgage Pass-Through Certificates
	Triggers, Adj. Rate Cert. and Miscellaneous Report for August 25, 2003 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report for September 25, 2003 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report
TRIGGER EVENTS						GROUP 2	GROUP 1	TOTAL
	Has a Stepdown Date occurred?							No
	Does Trigger Event exist?							No
	1. Does (A) equal or exceed (B)?							No
	(A) 60+ Day Delinq % (quotient of (x) over (y))							01.6508%
	(x) Rolling 3-month avg. of 60+ Day Delinq. Loans							47,~~653~~644,~~654~~013.5040
	(y) Stated Principal Balance							~~720~~706,~~580~~355,~~704~~852.1942
	(B) 40% of Sr. Enhancement Percentage							7.3856%
	2. Does (A) exceed (B)?							No
	(A) Realized Loss % (quotient of (x) over (y))							0.00%
	(x) Agg. Realized Losses to date							0.00
	(y) Cut-off Date Pool Principal Balance							756,263,897.60
	(B) Applicable Percentage							100.00%
	Senior Enhancement Percentage (Prior)							18.4689%
ADJUSTABLE RATE CERTIFICATE INFORMATION						GROUP 2	GROUP 1	TOTAL
SPACE INTENTIONALLY LEFT BLANK
ADDITIONAL INFORMATION						GROUP 2	GROUP 1	TOTAL
	Basis Risk Carry Forward Amount							0.00
				Page 25 of 25				© COPYRIGHT 2003 Deutsche Bank

Filing Compare · MORGAN STANLEY DEAN WITTER CAPITAL I INC CERT SER 2003-NC4