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): ~~October~~November 2725, 2003 INDYMAC MBS, INC. as Depositor, IndyMac Bank, F.S.B. as Seller and as Master Servicer, and Deutsche Bank National Trust Company, as trustee under the Pooling and Servicing Agreement, dated as of March 1, 2003, providing for the issuance of IndyMac MBS, Inc. Residential Asset-Securitization Trust Series 2003-A4 Mortgage Pass-Through Certificates Series 2003-D. INDYMAC MBS INC RESIDENTIAL ASSET SECUR TRUST 2003-A4 (Exact name of Registrant as specified in its Charter) DELAWARE (State or Other Jurisdiction of Incorporation) 333-102888-03 95-4791925 (Commission File Number) (I.R.S. Employer Identification No.) 155 NORTH LAKE AVENUE PASADENA, CALIFORNIA 91101 (Address of principal executive offices) (Zip Code) Registrant's Telephone Number, Including Area Code: (800) 669-2300 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 ~~October~~November 2725, 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 it individual capacity, but solely as a duly authorized agent of the Registrant pursuant to the Pooling and Servicing Agreement, dated as of March 1, 2003. Date: ~~Oct~~Nov 2926, 2003 By: /s/ Katherine M. Wannenmacher Katherine M. Wannenmacher Vice President EXHIBIT INDEX DOCUMENT Monthly Remittance Statement to the Certificateholders dated as of ~~October~~November 2725, 2003.

	IndyMac Residential Asset Securitization Trust 2003-A4
	Mortgage Pass-Through Certificates
	October 27, 2003 Distribution
	November 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				12
			8.	Prepayment Report				13
			9.	Prepayment Detail Report				16
			10.	Realized Loss Report				17
			11.	Realized Loss Detail Report				20
			12.	Triggers, Adj. Rate Cert. and Miscellaneous Report				21
				Total Number of Pages				21
			CONTACTS
				Administrator: James Noriega
				Direct Phone Number: (714)247-6281
				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:		IndyMac Bank					Cut-Off Date: March 1, 2003
	Certificate Insurer(s):							Closing Date: March 27, 2003
								First Payment Date: April 25, 2003
	Servicer(s):		IndyMac Bank
								Distribution Date: October 27, 2003
								Distribution Date: November 25, 2003
	Underwriter(s):		Bear, Stearns & Co. Inc					Record Date: ~~September~~October 3031, 2003
						Page 1 of 21					© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
	Mortgage Pass-Through Certificates
	Series 2003-A4
	Certificate Payment Report for October 27, 2003 Distribution
	Certificate Payment Report for November 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	PAC,AS	121,359,118.00			~~111~~110,~~295~~572,~~520~~174.9945	~~394~~391,~~171~~609.6478	~~723,346.54~~-	1391,~~117,518~~609.1878	-	-	110,572,174.45
A-2	PAC,CPT,AS	55,000,000.00			4746,~~174~~198,~~388~~953.2245	~~226~~221,~~043~~369.9499	~~975~~939,~~434~~375.7797	1,~~201~~160,~~478~~745.7196	-	-	4645,~~198~~259,~~953~~577.4548
A-3	FLT,PAC,AS	66,195,882.00			60,~~706~~312,~~647~~094.3166	76,~~895~~395.0932	~~394,552.65~~-	~~471~~76,~~447~~395.7432	-	-	60,312,094.66
A-4	IO,INV,NTL	-			-	~~353~~350,~~110~~815.3335	-	~~353~~350,~~110~~815.3335	-	-	-
A-5	TAC,AS	45,298,500.00			4140,~~732~~486,~~625~~528.9634	~~208~~202,~~663~~432.1364	1,~~246~~418,~~097~~410.6275	1,~~454~~620,~~760~~843.7539	-	-	4039,~~486~~068,~~528~~117.3459
A-6	PO,TAC	1,969,500.00			1,~~814~~760,~~462~~283.0084	-	5461,~~178~~670.1603	5461,~~178~~670.1603	-	-	1,~~760~~698,~~283~~613.8481
A-7	FLT,DLY,SUP	23,513,906.00			159,~~590~~121,~~506~~113.8735	3017,~~401~~786.4917	62,~~469~~701,~~393~~064.5117	62,~~499~~718,~~795~~850.0034	-	-	96,~~121~~420,~~113~~049.3518
A-8	INV,DLY,SUP	9,201,094.00			63,~~100~~569,~~633~~131.3545	7343,~~535~~021.2325	21,~~531~~056,~~501~~938.9020	21,~~605~~099,~~037~~959.1345	-	-	32,~~569~~512,~~131~~193.4525
A-9	SEQ,AS	11,500,000.00			11,500,000.00	55,104.17	-	55,104.17	-	-	11,500,000.00
PO	PO,RSTP	210,914.00			~~189~~187,~~479~~804.5823	-	~~1,675~~394.3548	~~1,675~~394.3548	-	-	187,~~804~~409.2375
A-X	IO,CSTR,NTL	-			-	9488,~~329~~595.4773	-	9488,~~329~~595.4773	-	-	-
A-R	R,AS	100.00			-	-	-	-	-	-	-
B-1	SUB,NAS	8,400,000.00			8,~~319~~273,~~941~~433.1342	39,~~866~~643.3854	4622,~~507~~453.7004	8662,~~374~~096.0858	-	-	8,~~273~~250,~~433~~980.4239
B-2	SUB,NAS	2,625,000.00			2,~~599~~585,~~981~~447.6094	12,~~458~~388.2560	147,~~533~~016.6657	2619,~~991~~405.9117	-	-	2,~~585~~578,~~447~~431.9437
B-3	SUB,NAS	1,925,000.00			1,~~906~~895,~~653~~995.1716	9,~~136~~084.0598	105,~~658~~145.0249	1914,~~794~~230.0747	-	-	1,~~895~~890,~~995~~849.1667
B-4	SUB,NAS	1,050,000.00			1,~~039~~034,~~992~~179.6418	4,~~983~~955.3044	52,~~813~~806.4663	107,~~796~~762.7607	-	-	1,~~034~~031,~~179~~372.1855
B-5	SUB,NAS	525,000.00			~~519~~517,~~996~~089.3259	2,~~491~~477.6572	21,~~906~~403.7331	53,~~398~~881.3803	-	-	~~517~~515,~~089~~686.5927
B-6	SUB,NAS	1,225,985.52			1,~~214~~207,~~300~~513.9111	5,~~818~~786.5300	63,~~787~~277.8004	129,~~606~~063.3304	-	-	1,~~207~~204,~~513~~236.1108
P		100.00			100.00	818,~~728~~407.4539	-	818,~~728~~407.4539	-	-	100.00
Total		350,000,099.52			~~311~~299,~~705~~221,~~230~~842.0618	1,~~595~~539,~~737~~874.1007	126,~~483~~219,~~387~~955.8868	147,~~079~~759,~~124~~829.9875	-	-	~~299~~293,~~221~~001,~~842~~886.1850
	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				F-30/360	45660NPF6	121,359,118.00	~~917~~911.~~075889~~115508	3.~~247977~~226867	~~5.960381~~-	93.~~208358~~226867	911.115508
A-2				F-30/360	45660NPG4	55,000,000.00	~~857~~839.~~716150~~980972	4.~~109890~~024909	17.~~735178~~079563	21.~~845067~~104472	~~839~~822.~~980972~~901409
A-3				A-30/360	45660NPH2	66,195,882.00	~~917~~911.~~075889~~115508	1.~~161630~~154080	~~5.960381~~-	71.~~122010~~154080	911.115508
A-4				A-30/360	45660NPJ8	66,195,882.00	~~917~~911.~~075889~~115508	5.~~334325~~299655	-	5.~~334325~~299655	911.115508
A-5				F-30/360	45660NPK5	45,298,500.00	~~921~~893.~~280527~~771943	4.~~606403~~468860	2731.~~508585~~312532	3235.~~114987~~781392	~~893~~862.~~771943~~459410
A-6				-30/360	45660NPL3	1,969,500.00	~~921~~893.~~280527~~771943	-	2731.~~508585~~312532	2731.~~508585~~312532	~~893~~862.~~771943~~459410
A-7				A-30/360	45660NPM1	23,513,906.00	~~663~~387.~~033478~~902944	10.~~292915~~756411	~~275~~114.~~130534~~870927	~~276~~115.~~423449~~627337	~~387~~273.~~902944~~032017
A-8				A-30/360	45660NPN9	9,201,094.00	~~663~~387.~~033478~~902944	74.~~992009~~675667	~~275~~114.~~130534~~870927	~~283~~119.~~122543~~546594	~~387~~273.~~902944~~032017
A-9				F-30/360	45660NPP4	11,500,000.00	1,000.000000	4.791667	-	4.791667	1,000.000000
PO				-30/360	45660NPQ2	210,914.00	~~898~~890.~~373650~~430365	-	71.~~943285~~870336	71.~~943285~~870336	~~890~~888.~~430365~~560029
A-X				A-30/360	45660NPR0	275,071,562.00	~~885~~844.~~943404~~724732	0.~~342927~~322082	-	0.~~342927~~322082	~~844~~822.~~724732~~703800
A-R				F-30/360	45660NPS8	100.00	-	-	-	-	-
B-1				F-30/360	45660NPT6	8,400,000.00	~~990~~984.~~469182~~932550	4.~~745998~~719469	52.~~536631~~672981	107.~~282629~~392450	~~984~~982.~~932550~~259570
B-2				F-30/360	45660NPU3	2,625,000.00	~~990~~984.~~469182~~932550	4.~~746000~~719467	52.~~536631~~672981	107.~~282631~~392447	~~984~~982.~~932550~~259570
B-3				F-30/360	45660NPV1	1,925,000.00	~~990~~984.~~469182~~932550	4.~~746000~~719470	52.~~536631~~672981	107.~~282631~~392451	~~984~~982.~~932550~~259570
B-4				F-30/360	45660NPW9	1,050,000.00	~~990~~984.~~469182~~932550	4.~~746000~~719467	52.~~536631~~672981	107.~~282631~~392447	~~984~~982.~~932550~~259570
B-5				F-30/360	45660NPX7	525,000.00	~~990~~984.~~469182~~932550	4.~~746000~~719467	52.~~536631~~672981	107.~~282631~~392447	~~984~~982.~~932550~~259570
B-6				F-30/360	45660NPY5	1,225,985.52	~~990~~984.~~469214~~932607	4.~~746002~~719468	52.~~536607~~672981	107.~~282609~~392449	~~984~~982.~~932607~~259626
P				-		100.00	1,000.000000	87184,~~284~~073.~~500000~~900000	-	87184,~~284~~073.~~500000~~900000	1,000.000000
							Page 2 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
	Mortgage Pass-Through Certificates
	Series 2003-A4
	Certificate Payment Report for October 27, 2003 Distribution
	Certificate Payment Report for November 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	121,359,118.00		23,~~892~~283,~~296~~906.6947		-	10,786,943.55	10,786,943.55	1314,~~679~~070,~~240~~850.2402	-	-	110,572,174.45
A-2	55,000,000.00		1,~~757~~978,~~586~~956.8281		-	89,~~801~~740,~~046~~422.5552	89,~~801~~740,~~046~~422.5552	1011,~~558~~719,~~633~~379.3733	-	-	4645,~~198~~259,~~953~~577.4548
A-3	66,195,882.00		~~591~~668,~~959~~354.4476		-	5,883,787.34	5,883,787.34	6,~~475~~552,~~746~~142.7810	-	-	60,312,094.66
A-4	-		2,~~563~~914,~~273~~088.2762		-	-	-	2,~~563~~914,~~273~~088.2762	-	-	-
A-5	45,298,500.00		1,~~545~~747,~~201~~634.7034		-	46,~~811~~230,~~971~~382.6641	46,~~811~~230,~~971~~382.6641	67,~~357~~978,~~173~~016.3675	-	-	4039,~~486~~068,~~528~~117.3459
A-6	1,969,500.00		-		-	~~209~~270,~~216~~886.1619	~~209~~270,~~216~~886.1619	~~209~~270,~~216~~886.1619	-	-	1,~~760~~698,~~283~~613.8481
A-7	23,513,906.00		~~294~~311,~~177~~963.7390		-	1417,~~392~~093,~~792~~856.6582	1417,~~392~~093,~~792~~856.6582	1417,~~686~~405,~~970~~820.3872	-	-	96,~~121~~420,~~113~~049.3518
A-8	9,201,094.00		~~677~~720,~~482~~504.9520		-	56,~~631~~688,~~962~~900.5575	56,~~631~~688,~~962~~900.5575	67,~~309~~409,~~445~~404.5095	-	-	32,~~569~~512,~~131~~193.4525
A-9	11,500,000.00		~~385~~440,~~729~~833.1936		-	-	-	~~385~~440,~~729~~833.1936	-	-	11,500,000.00
PO	210,914.00		-		-	23,~~109~~504.7725	23,~~109~~504.7725	23,~~109~~504.7725	-	-	187,~~804~~409.2375
A-X	-		~~723~~812,~~943~~539.4417		-	-	-	~~723~~812,~~943~~539.4417	-	-	-
A-R	100.00		47.49		-	100.00	100.00	147.49	-	-	-
B-1	8,400,000.00		~~280~~320,~~583~~226.3892		-	~~126~~149,~~566~~019.5861	~~126~~149,~~566~~019.5861	~~407~~469,~~149~~246.9653	-	-	8,~~273~~250,~~433~~980.4239
B-2	2,625,000.00		87100,~~682~~070.3292		-	3946,~~552~~568.0563	3946,~~552~~568.0563	~~127~~146,~~234~~639.3755	-	-	2,~~585~~578,~~447~~431.9437
B-3	1,925,000.00		6473,~~300~~385.3634		-	2934,~~004~~150.8433	2934,~~004~~150.8433	93107,~~305~~535.2067	-	-	1,~~895~~890,~~995~~849.1667
B-4	1,050,000.00		3540,~~072~~028.9236		-	1518,~~820~~627.8245	1518,~~820~~627.8245	5058,~~893~~655.7481	-	-	1,~~034~~031,~~179~~372.1855
B-5	525,000.00		1720,~~536~~014.4719		-	79,~~910~~313.4173	79,~~910~~313.4173	2529,~~446~~327.8892	-	-	~~517~~515,~~089~~686.5927
B-6	1,225,985.52		4046,~~951~~737.34		-	1821,~~472~~749.4144	1821,~~472~~749.4144	5968,~~423~~486.7578	-	-	1,~~207~~204,~~513~~236.1108
P	100.00		2644,~~514~~922.7211		-	-	-	2644,~~514~~922.7211	-	-	100.00
Total	350,000,099.52		1113,~~984~~524,~~340~~214.2330		-	5056,~~778~~998,~~257~~213.3402	5056,~~778~~998,~~257~~213.3402	6270,~~762~~522,~~597~~427.5732	-	-	~~299~~293,~~221~~001,~~842~~886.1850
	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	4.25000%	~~111~~110,~~295~~572,~~520~~174.9945			~~394~~391,~~171~~609.6478	-	-	-	~~394~~391,~~171~~609.6478	~~394~~391,~~171~~609.6478	-
A-2	5.75000%	4746,~~174~~198,~~388~~953.2245			~~226~~221,~~043~~369.9499	-	-	-	~~226~~221,~~043~~369.9499	~~226~~221,~~043~~369.9499	-
A-3	1.52000%	60,~~706~~312,~~647~~094.3166			76,~~895~~395.0932	-	-	-	76,~~895~~395.0932	76,~~895~~395.0932	-
A-4	6.98000%	60,~~706~~312,~~647~~094.3166			~~353~~350,~~110~~815.3335	-	-	-	~~353~~350,~~110~~815.3335	~~353~~350,~~110~~815.3335	-
A-5	6.00000%	4140,~~732~~486,~~625~~528.9634			~~208~~202,~~663~~432.1364	-	-	-	~~208~~202,~~663~~432.1364	~~208~~202,~~663~~432.1364	-
A-6		1,~~814~~760,~~462~~283.0084			-	-	-	-	-	-	-
A-7	2.34000%	159,~~590~~121,~~506~~113.8735			3017,~~401~~786.4917	-	-	-	3017,~~401~~786.4917	3017,~~401~~786.4917	-
A-8	########	63,~~100~~569,~~633~~131.3545			7343,~~535~~021.2325	-	-	-	7343,~~535~~021.2325	7343,~~535~~021.2325	-
A-9	5.75000%	11,500,000.00			55,104.17	-	-	-	55,104.17	55,104.17	-
PO		~~189~~187,~~479~~804.5823			-	-	-	-	-	-	-
A-X	0.~~46449~~45754%	~~243~~232,~~697~~359,~~835~~751.9149			9488,~~329~~595.4773	-	-	-	9488,~~329~~595.4773	9488,~~329~~595.4773	-
A-R	5.75000%	-			-	-	-	-	-	-	-
B-1	5.75000%	8,~~319~~273,~~941~~433.1342			39,~~866~~643.3854	-	-	-	39,~~866~~643.3854	39,~~866~~643.3854	-
B-2	5.75000%	2,~~599~~585,~~981~~447.6094			12,~~458~~388.2560	-	-	-	12,~~458~~388.2560	12,~~458~~388.2560	-
B-3	5.75000%	1,~~906~~895,~~653~~995.1716			9,~~136~~084.0598	-	-	-	9,~~136~~084.0598	9,~~136~~084.0598	-
B-4	5.75000%	1,~~039~~034,~~992~~179.6418			4,~~983~~955.3044	-	-	-	4,~~983~~955.3044	4,~~983~~955.3044	-
B-5	5.75000%	~~519~~517,~~996~~089.3259			2,~~491~~477.6572	-	-	-	2,~~491~~477.6572	2,~~491~~477.6572	-
B-6	5.75000%	1,~~214~~207,~~300~~513.9111			5,~~818~~786.5300	-	-	-	5,~~818~~786.5300	5,~~818~~786.5300	-
P		100.00			-	-	-	-	-	818,~~728~~407.4539	-
Total		~~616~~591,~~109~~893,~~713~~688.2833			1,~~587~~521,~~008~~466.6568	-	-	-	1,~~587~~521,~~008~~466.6568	1,~~595~~539,~~737~~874.1007	-
							Page 3 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
	Mortgage Pass-Through Certificates
	Collection Account Report for October 27, 2003 Distribution
	Collection Account Report for November 25, 2003 Distribution
	Collection Account Report
SUMMARY								TOTAL
	Principal Collections							126,~~483~~219,~~387~~955.9168
	Principal Withdrawals							0.00
	Principal Other Accounts							0.00
	TOTAL PRINCIPAL							126,~~483~~219,~~387~~955.9168
	Interest Collections							1,~~668~~599,~~111~~229.0600
	Interest Withdrawals							(8177,~~102~~762.4432)
	Interest Other Accounts							0.00
	TOTAL INTEREST							1,~~587~~521,~~008~~466.6268
	TOTAL AVAILABLE FUNDS TO BONDHOLDERS							147,~~070~~741,~~396~~422.5336
	Interest Payable to Bondholders							1,~~587~~521,~~008~~466.6268
	Principal Payment Amount Payable to Bondholders							126,~~483~~219,~~387~~955.9168
PRINCIPAL - COLLECTIONS								TOTAL
	Scheduled Principal							~~293~~289,~~262~~915.5305
	Curtailments							4174,~~987~~498.1064
	Prepayments in Full							105,~~698~~333,~~795~~203.3870
	Repurchases/Substitutions							1522,~~449,342~~338.9029
	Liquidations							0.00
	Insurance Principal							0.00
	Other Additional Principal							0.00
	LESS: Delinquent Principal							(4,~~793~~690.9621)
	LESS: Realized Losses							0.00
	Principal Advanced							4,~~793~~690.9621
	TOTAL PRINCIPAL							126,~~483~~219,~~387~~955.9168
				Page 4 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
	Mortgage Pass-Through Certificates
	Collection Account Report for October 27, 2003 Distribution
	Collection Account Report for November 25, 2003 Distribution
	Collection Account Report
PRINCIPAL - WITHDRAWALS								TOTAL
SPACE INTENTIONALLY LEFT BLANK
PRINCIPAL - OTHER ACCOUNTS								TOTAL
SPACE INTENTIONALLY LEFT BLANK
INTEREST - COLLECTIONS								TOTAL
	Scheduled Interest							1,~~659~~595,~~042~~202.5064
	Repurchases/Substitutions							94,~~068~~026.5636
	Liquidations							0.00
	Insurance Interest							0.00
	Other Additional Interest							0.00
	Prepayment Interest Shortfalls							(311,~~688~~439.0240)
	Delinquent Interest							(3129,~~377~~481.5049)
	Interest Realized Losses							0.00
	Compensating Interest							311,~~688~~439.0240
	Interest Advanced							3129,~~377~~481.5049
	Capitalized Interest							0.00
	TOTAL INTEREST							1,~~668~~599,~~111~~229.0600
				Page 5 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Collection Account Report for October 27, 2003 Distribution
	Collection Account Report for November 25, 2003 Distribution
	Collection Account Report
INTEREST - WITHDRAWALS								TOTAL
SPACE INTENTIONALLY LEFT BLANK
INTEREST - OTHER ACCOUNTS								TOTAL
SPACE INTENTIONALLY LEFT BLANK
INTEREST - FEES								TOTAL
	Master Servicing Fees							0.00
	Current Servicing Fees							7774,~~793~~599.2448
	Delinquent Servicing Fees							1,~~361~~292.0470
	Trustee Fees							1,~~948~~870.1614
	TOTAL INTEREST FEES							8177,~~102~~762.4432
				Page 6 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
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	Credit Enhancement Report for October 27, 2003 Distribution
	Credit Enhancement Report for November 25, 2003 Distribution
	Credit Enhancement Report
ACCOUNTS								TOTAL
SPACE INTENTIONALLY LEFT BLANK
INSURANCE								TOTAL
SPACE INTENTIONALLY LEFT BLANK
STRUCTURAL FEATURES								TOTAL
SPACE INTENTIONALLY LEFT BLANK
				Page 7 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
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	Collateral Report for October 27, 2003 Distribution
	Collateral Report for November 25, 2003 Distribution
	Collateral Report
COLLATERAL								TOTAL
	Loan Count:
	Original							1045
	Prior							~~954~~923
	Prefunding							-
	Scheduled Paid Offs							-
	Full Voluntary Prepayments							(2917)
	Repurchases							(21)
	Liquidations							-
	Current							~~923~~905
	Principal Balance:
	Original							349,999,381.33
	Prior							~~311~~299,~~705~~221,~~130~~742.0211
	Prefunding							-
	Scheduled Principal							(~~293~~289,~~262~~915.5305)
	Partial and Full Voluntary Prepayments							(105,~~740~~407,~~782~~702.4834)
	Repurchases							(1522,~~449,342~~338.9029)
	Liquidations							-
	Current							~~299~~293,~~221~~001,~~742~~786.1143
PREFUNDING								TOTAL
	Remaining Pre-Funding Amount							0.00
Current Prin Balance by Groups (in millions of dollars)					Total Current Principal Balance (in millions of dollars)
				Page 8 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Collateral Report for November 25, 2003 Distribution
	Collateral Report
CHARACTERISTICS								TOTAL
	Weighted Average Coupon Original							6.434559%
	Weighted Average Coupon Prior							6.~~425657~~421881%
	Weighted Average Coupon Current							6.~~421881~~413554%
	Weighted Average Months to Maturity Original							357
	Weighted Average Months to Maturity Prior							~~352~~351
	Weighted Average Months to Maturity Current							~~351~~350
	Weighted Avg Remaining Amortization Term Original							-
	Weighted Avg Remaining Amortization Term Prior							-
	Weighted Avg Remaining Amortization Term Current							-
	Weighted Average Seasoning Original							2.54
	Weighted Average Seasoning Prior							67.8869
	Weighted Average Seasoning Current							78.6970
Note: Original information refers to deal issue.
WAC by Groups					Total WAC
WARAT by Groups					Total WARAT
Note: Dates correspond to distribution dates.
				Page 9 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Collateral Report for October 27, 2003 Distribution
	Collateral Report for November 25, 2003 Distribution
	Collateral Report
ARM CHARACTERISTICS								TOTAL
	Weighted Average Margin Original							0.000%
	Weighted Average Margin Prior							0.000%
	Weighted Average Margin Current							0.000%
	Weighted Average Max Rate Original							0.000%
	Weighted Average Max Rate Prior							0.000%
	Weighted Average Max Rate Current							0.000%
	Weighted Average Min Rate Original							0.000%
	Weighted Average Min Rate Prior							0.000%
	Weighted Average Min Rate Current							0.000%
	Weighted Average Cap Up Original							0.000%
	Weighted Average Cap Up Prior							0.000%
	Weighted Average Cap Up Current							0.000%
	Weighted Average Cap Down Original							0.000%
	Weighted Average Cap Down Prior							0.000%
	Weighted Average Cap Down Current							0.000%
Note: Original information refers to deal issue.
SERVICING FEES / ADVANCES								TOTAL
	Current PPIS							311,~~688~~439.0240
	Current Net PPIS							0.00
	Delinquent Servicing Fees							1,~~361~~292.0470
	TOTAL SERVICING FEES							7975,~~154~~892.2818
	TOTAL ADVANCES FOR CURRENT PERIOD							3432,~~810~~879.4200
ADDITIONAL COLLATERAL INFORMATION								TOTAL
	Net Mortgage Rate							6.~~109654~~101696%
				Page 10 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Delinquency Report for October 27, 2003 Distribution
	Delinquency Report for November 25, 2003 Distribution
	Delinquency Report - Total
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance		-	32,~~067~~912,~~487~~819.3373	~~156,126.95~~-	1357,~~962,372~~811.5400	53,~~185~~270,~~986~~630.8273
		% Balance		~~0.00%~~	10.0399%	0.0500%	0.6612%	1.7312%
		# Loans		-	1011	1-	83	1914
		% # Loans		~~0.00%~~	1.0822%	0.1100%	0.8733%	21.0655%
FORECLOSURE		Balance		-	-	-	-1,262,749.19	-1,262,749.19
		% Balance		0.00%	0.00%	0.00%	0.0043%	0.0043%
		# Loans		-	-	-	-5	-5
		% # Loans		0.00%	0.00%	0.00%	0.0055%	0.0055%
BANKRUPTCY		Balance		-	-	-396,260.57	-	-396,260.57
		% Balance		0.00%	0.00%	0.0014%	0.00%	0.0014%
		# Loans		-	-	-1	-	-1
		% # Loans		0.00%	0.00%	0.0011%	0.00%	0.0011%
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		-	32,~~067~~912,~~487~~819.3373	~~156~~396,~~126~~260.9557	1,~~962~~620,~~372~~560.5419	54,~~185~~929,~~986~~640.8249
		% Balance		0.00%	10.0399%	0.0514%	0.6655%	1.7368%
		# Loans		-	1011	1	8	1920
		% # Loans		0.00%	1.0822%	0.11%	0.8788%	2.0621%
Note: <1 Payment = 1-30days, 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 21				© COPYRIGHT 2003 Deutsche Bank
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	REO Report for November 25, 2003 Distribution
	REO Report - Mortgage Loans that Become REO During Current Distribution
SUMMARY				LOAN GROUP
Total Loan Count = 0				Loan Group 1 = Group I Group; REO Book Value = 000.00
Total Original Principal Balance = 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 12 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Prepayment Report for October 27, 2003 Distribution
	Prepayment Report for November 25, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENTS								TOTAL
	Current
	Number of Paid in Full Loans							2917
	Number of Repurchased Loans							21
	Total Number of Loans Prepaid in Full							3118
	Paid in Full Balance							105,~~698~~333,~~795~~203.3870
	Repurchased Loans Balance							1522,~~449,342~~338.9029
	Curtailments Amount							4174,~~987~~498.1064
	Total Prepayment Amount							125,~~190~~930,~~125~~040.3863
	Cumulative
	Number of Paid in Full Loans							~~116~~133
	Number of Repurchased Loans							67
	Total Number of Loans Prepaid in Full							~~122~~140
	Paid in Full Balance							4550,~~526~~859,~~719~~922.0272
	Repurchased Loans Balance							23,~~759~~282,~~694~~032.4069
	Curtailments Amount							~~294~~369,~~663~~162.9963
	Total Prepayment Amount							4854,~~581~~511,~~077~~118.4104
SPACE INTENTIONALLY LEFT BLANK
Total Prepayments by Groups (in thousands of dollars)					Total Prepayments (in thousands of dollars)
				Page 13 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Prepayment Report for November 25, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENT RATES								TOTAL
	SMM							31.9198%
	3 Months Avg SMM							32.1270%
	12 Months Avg SMM
	Avg SMM Since Cut-off							2.1211%
	CPR							3821.0737%
	3 Months Avg CPR							3127.6299%
	12 Months Avg CPR
	Avg CPR Since Cut-off							22.7053%
	PSA							~~2473~~1228.9085%
	3 Months Avg PSA Approximation							~~2289~~1804.1553%
	12 Months Avg PSA Approximation
	Avg PSA Since Cut-off Approximation							~~2197~~2009.6390%
CPR by Groups					Total CPR
PSA by Groups					Total PSA
				Page 14 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Prepayment Report for November 25, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
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 15 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
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	Prepayment Detail Report for October 27, 2003 Distribution
	Prepayment Detail Report for November 25, 2003 Distribution
	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution
SUMMARY						LOAN GROUP
Total Loan Count = 31						Loan Group 1 = Group I Group
Total Loan Count = 18						Loan Group 1 = Group I Group
Total Original Principal Balance = 12,281,640.00
Total Original Principal Balance = 5,896,450.00
Total Prepayment Amount = 12,148,138.28
Total Prepayment Amount = 5,855,541.99
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
1905871 1			145,800.00	144,037.58	Sep-02-03	7.500%	MT - 90.00%	Paid Off - 360	Nov-22-02
1870589 1			351,200.00	347,939.40	Nov-03-03	7.000%	MA - 79.46%	Paid Off - 360	Oct-25-02
1932184 1			85,500.00	84,785.74	Sep-04-03	8.000%	GA - 90.00%	Paid Off - 360	Aug-23-02
1938796 1			492,500.00	488,244.78	Nov-12-03	7.500%	CA - 54.72%	Paid Off - 360	Oct-25-02
1946878 1			300,700.00	298,640.56	Sep-29-03	7.500%	CA - 86.66%	Paid Off - 360	Nov-20-02
2016251 1			231,750.00	230,392.96	Oct-29-03	9.750%	OR - 95.00%	Paid Off - 360	Sep-10-02
1956351 1			387,000.00	383,462.50	Sep-24-03	6.000%	CA - 67.30%	Paid Off - 360	Jun-26-01
2101680 1			385,000.00	382,399.59	Oct-28-03	6.250%	CA - 67.54%	Paid Off - 360	Feb-24-03
2091696 1			313,000.00	310,638.72	Sep-09-03	6.125%	CA - 60.19%	Paid Off - 360	Apr-24-02
2139766 1			250,000.00	248,410.94	Oct-27-03	6.500%	NY - 58.82%	Paid Off - 360	Mar-01-03
2130271 1			365,000.00	362,595.48	Sep-12-03	6.375%	SC - 52.14%	Paid Off - 360	Jun-20-02
2162604 1			328,000.00	325,784.47	Nov-13-03	6.375%	CA - 62.48%	Paid Off - 360	Feb-19-03
2153491 1			44,000.00	43,778.30	Sep-19-03	7.750%	CA - 19.56%	Paid Off - 360	Aug-28-02
2164592 1			205,000.00	203,712.75	Oct-16-03	6.625%	DC - 53.25%	Paid Off - 360	Feb-28-03
2153492 1			62,000.00	61,637.95	Sep-19-03	7.000%	CA - 45.93%	Paid Off - 360	Aug-28-02
2170936 1			480,000.00	477,421.90	Nov-05-03	6.625%	CA - 80.00%	Paid Off - 360	Feb-28-03
2153497 1			525,000.00	521,036.84	Sep-26-03	6.375%	HI - 77.78%	Paid Off - 360	Nov-13-02
2191252 1			601,000.00	596,945.31	Nov-03-03	6.250%	CA - 63.20%	Paid Off - 360	Feb-21-03
2167311 1			680,500.00	677,184.28	Sep-10-03	7.125%	MI - 75.61%	Paid Off - 360	Feb-20-03
2205546 1			440,000.00	437,101.42	Nov-04-03	6.375%	CA - 80.00%	Paid Off - 360	Nov-08-01
2173801 1			197,600.00	196,315.47	Sep-16-03	6.875%	CA - 95.81%	Paid Off - 360	Jan-16-03
2241577 1			132,000.00	127,859.01	Oct-16-03	6.500%	NY - 80.00%	Paid Off - 360	Mar-18-03
2191267 1			155,000.00	154,147.76	Sep-24-03	6.500%	VA - 49.84%	Paid Off - 360	Feb-13-03
2249933 1			80,000.00	79,434.09	Nov-04-03	6.000%	NJ - 40.00%	Paid Off - 360	Feb-21-03
2234999 1			515,000.00	512,811.77	Sep-08-03	6.875%	MA - 66.03%	Paid Off - 360	Mar-07-03
2250933 1			185,000.00	183,982.83	Oct-28-03	6.500%	NJ - 71.15%	Paid Off - 360	Mar-11-03
2243170 1			553,000.00	550,473.17	Sep-29-03	6.500%	CA - 73.73%	Paid Off - 360	Mar-04-03
2264625 1			350,000.00	348,101.04	Nov-05-03	7.375%	MA - 76.09%	Paid Off - 360	Mar-03-03
2245921 1			157,000.00	156,115.82	Sep-09-03	6.375%	CO - 56.07%	Paid Off - 360	Feb-20-03
2264998 1			153,000.00	151,967.75	Nov-10-03	6.250%	MD - 54.64%	Paid Off - 360	Feb-26-03
2247893 1			558,000.00	554,857.63	Sep-09-03	6.375%	CA - 75.00%	Paid Off - 360	Feb-14-03
2276275 1			208,000.00	206,771.44	Oct-31-03	6.125%	CA - 59.09%	Paid Off - 360	Mar-19-03
2254215 1			359,000.00	357,474.58	Sep-25-03	6.875%	CA - 64.11%	Paid Off - 360	Mar-04-03
2313828 1			500,000.00	496,734.02	Nov-05-03	7.125%	FL - 79.36%	Paid Off - 360	Feb-05-03
2269158 1			588,250.00	583,914.11	Sep-08-03	6.500%	DC - 65.00%	Paid Off - 360	Dec-05-02
2126835 1			524,000.00	522,338.29	Oct-31-03	9.250%	NY - 80.00%	Repur/Subs - 360	Mar-17-03
2270952 1			196,000.00	194,842.29	Sep-01-03	6.125%	CA - 70.00%	Paid Off - 360	Feb-21-03
2271472 1			650,000.00	646,808.78	Sep-15-03	6.125%	CA - 72.22%	Paid Off - 360	Mar-19-03
2283249 1			412,000.00	409,679.84	Sep-24-03	6.375%	CA - 80.00%	Paid Off - 360	Feb-25-03
2299106 1			520,000.00	516,555.62	Sep-06-03	6.375%	CA - 80.00%	Paid Off - 360	Jan-09-03
2303464 1			343,000.00	339,668.13	Sep-15-03	6.250%	MA - 75.39%	Paid Off - 360	Oct-11-02
2303673 1			341,250.00	339,546.97	Sep-06-03	7.000%	VA - 75.00%	Paid Off - 360	Feb-28-03
2308151 1			545,000.00	542,387.33	Sep-11-03	6.250%	CA - 60.56%	Paid Off - 360	Feb-24-03
2315492 1			145,000.00	144,258.52	Sep-01-03	6.875%	CA - 59.18%	Paid Off - 360	Feb-25-03
2341533 1			450,340.00	447,680.07	Sep-19-03	6.125%	FL - 70.00%	Paid Off - 360	Feb-06-03
2344064 1			495,200.00	492,542.13	Sep-01-03	6.625%	GA - 80.00%	Paid Off - 360	Mar-04-03
2363641 1			675,000.00	670,917.44	Sep-12-03	6.000%	CA - 75.00%	Paid Off - 360	Jan-16-02
272279 1			1,000,000.00	933,692.86	Sep-30-03	7.375%	CA - 61.90%	Repur/Subs - 360	Oct-15-97
2304067 1			517,500.00	515,650.04	Sep-30-03	7.750%	NY - 75.00%	Repur/Subs - 360	Mar-14-03
					Page 16 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Realized Loss Report for October 27, 2003 Distribution
	Realized Loss Report for November 25, 2003 Distribution
	Realized Loss Report - Collateral
COLLATERAL REALIZED LOSSES								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.
SPACE INTENTIONALLY LEFT BLANK
							3 Months Moving Average
Collateral Loss Severity Approximation by Groups					Collateral Loss Severity Approximation
				Page 17 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Realized Loss Report for November 25, 2003 Distribution
	Realized Loss Report - Collateral
DEFAULT SPEEDS								TOTAL
	MDR							0.00%
	3 Months Avg MDR							0.00%
	12 Months Avg MDR
	Avg MDR Since Cut-off							0.00%
	CDR							0.00%
	3 Months Avg CDR							0.00%
	12 Months Avg CDR
	Avg CDR Since Cut-off							0.00%
	SDA							0.00%
	3 Months Avg SDA Approximation							0.00%
	12 Months Avg SDA Approximation
	Avg SDA Since Cut-off Approximation							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
CDR by Groups					Total CDR
SDA by Groups					Total SDA
				Page 18 of 21				© COPYRIGHT 2003 Deutsche Bank
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	Realized Loss Report for November 25, 2003 Distribution
	Realized Loss Report - Collateral
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 19 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
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	Realized Loss Detail Report for October 27, 2003 Distribution
	Realized Loss Detail Report for November 25, 2003 Distribution
	Realized Loss Detail Report - Loans Liquidated During Current Distribution
SUMMARY						LOAN GROUP
Total Loan Count = 0						Loan Group 1 = Group I Group
Total Original Principal Balance = 0.00
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 20 of 21				© COPYRIGHT 2003 Deutsche Bank
	IndyMac Residential Asset Securitization Trust 2003-A4
	Mortgage Pass-Through Certificates
	Triggers, Adj. Rate Cert. and Miscellaneous Report for October 27, 2003 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report for November 25, 2003 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report
TRIGGER EVENTS								TOTAL
	Senior Credit Depletion Date							No
ADJUSTABLE RATE CERTIFICATE INFORMATION								TOTAL
SPACE INTENTIONALLY LEFT BLANK
ADDITIONAL INFORMATION								TOTAL
	Senior Percentage							94.~~994992~~815330%
	Subordinate Percentage							5.~~005008~~184670%
	Senior Prepayment Percentage							100.000000%
	Subordinate Prepayment Percentage							0.000000%
	Current Special Hazard Loss Coverage Amount							3,~~851~~847,~~402~~675.0656
	Current Fraud Loss Coverage Amount							3,500,000.00
	Current Bankruptcy Loss Coverage Amount							100,000.00
				Page 21 of 21				© COPYRIGHT 2003 Deutsche Bank

Filing Compare · INDYMAC MBS INC RESIDENTIAL ASSET SECUR TRUST 2003-A4