			MASTR Asset Backed Securities Trust 2005-NC1					Contact:
			Mortgage Pass Through Certificates, Series 2005-NC1					Brian Giel
								Account Administrator
								651-495-3844
			STATEMENT TO CERTIFICATEHOLDERS					brian.giel@usbank.com

Distribution Date:

08/25/05

		Original	Beginning				Allocated	Ending
		Certificate	Certificate	Principal	Interest	Total	Realized	Certificate
Class	Cusip	Face Value	Balance	Distribution	Distribution(1)	Distribution	Losses	Balance
A-1	57643LGA8	$350,089,000.00	$266,586,230.43	$16,349,994.35	$860,851.37	$17,210,845.72	$0.00	$250,236,236.08
A-2	57643LGB6	$87,522,000.00	$66,646,367.24	$4,087,486.91	$216,933.93	$4,304,420.84	$0.00	$62,558,880.33
A-3	57643LGC4	$172,908,000.00	$97,875,734.07	$19,340,956.11	$302,571.96	$19,643,528.07	$0.00	$78,534,777.96
A-4	57643LGD2	$128,443,000.00	$128,443,000.00	$0.00	$408,127.63	$408,127.63	$0.00	$128,443,000.00
A-5	57643LGE0	$16,324,000.00	$16,324,000.00	$0.00	$53,556.32	$53,556.32	$0.00	$16,324,000.00
M-1	57643LGF7	$53,424,000.00	$53,424,000.00	$0.00	$181,255.76	$181,255.76	$0.00	$53,424,000.00
M-2	57643LGG5	$41,171,000.00	$41,171,000.00	$0.00	$140,393.11	$140,393.11	$0.00	$41,171,000.00
M-3	57643LGH3	$16,664,000.00	$16,664,000.00	$0.00	$57,541.72	$57,541.72	$0.00	$16,664,000.00
M-4	57643LGJ9	$16,664,000.00	$16,664,000.00	$0.00	$60,555.12	$60,555.12	$0.00	$16,664,000.00
M-5	57643LGK6	$17,154,000.00	$17,154,000.00	$0.00	$62,926.59	$62,926.59	$0.00	$17,154,000.00
M-6	57643LGL4	$13,724,000.00	$13,724,000.00	$0.00	$51,171.46	$51,171.46	$0.00	$13,724,000.00
M-7	57643LGM2	$11,273,000.00	$11,273,000.00	$0.00	$47,177.51	$47,177.51	$0.00	$11,273,000.00
M-8	57643LGN0	$9,803,000.00	$9,803,000.00	$0.00	$42,122.95	$42,122.95	$0.00	$9,803,000.00
M-9	57643LGP5	$11,273,000.00	$11,273,000.00	$0.00	$56,884.81	$56,884.81	$0.00	$11,273,000.00
M-10	57643LGQ3	$3,431,000.00	$3,431,000.00	$0.00	$20,563.12	$20,563.12	$0.00	$3,431,000.00
CE	NA	$30,386,759.32	$30,386,759.32	$0.00	$1,944,775.13	$1,944,775.13	$0.00	$30,386,759.32
P	NA	$100.00	$100.00	$0.00	$793,062.72	$793,062.72	$0.00	$100.00
R	NA	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00	$0.00
Total		$980,253,859.32	$800,843,191.06	$39,778,437.37	$5,300,471.21	$45,078,908.58	$0.00	$761,064,753.69

AMOUNTS PER $1,000 UNIT						PASS THROUGH RATES
					Ending	Original	Current	Next
	Principal	Interest	Total	Realized	Certificate	Pass-Through	Pass-Through	Pass-Through
Class	Distribution	Distribution	Distribution	Losses	Balance	Interest Rate	Interest Rate	Interest Rate*
A-1	46.70239382	2.45895007	49.16134389	0.00000000	714.77891645	2.79000%	3.75000%	3.93125%
A-2	46.70239380	2.47862172	49.18101552	0.00000000	714.77891650	2.82000%	3.78000%	3.96125%
A-3	111.85691877	1.74990145	113.60682022	0.00000000	454.19979388	2.63000%	3.59000%	3.77125%
A-4	0.00000000	3.17749998	3.17749998	0.00000000	1000.00000000	2.73000%	3.69000%	3.87125%
A-5	0.00000000	3.28083313	3.28083313	0.00000000	1000.00000000	2.85000%	3.81000%	3.99125%
M-1	0.00000000	3.39277778	3.39277778	0.00000000	1000.00000000	2.98000%	3.94000%	4.12125%
M-2	0.00000000	3.41000000	3.41000000	0.00000000	1000.00000000	3.00000%	3.96000%	4.14125%
M-3	0.00000000	3.45305569	3.45305569	0.00000000	1000.00000000	3.05000%	4.01000%	4.19125%
M-4	0.00000000	3.63388862	3.63388862	0.00000000	1000.00000000	3.26000%	4.22000%	4.40125%
M-5	0.00000000	3.66833333	3.66833333	0.00000000	1000.00000000	3.30000%	4.26000%	4.44125%
M-6	0.00000000	3.72861119	3.72861119	0.00000000	1000.00000000	3.37000%	4.33000%	4.51125%
M-7	0.00000000	4.18500044	4.18500044	0.00000000	1000.00000000	3.90000%	4.86000%	5.04125%
M-8	0.00000000	4.29694481	4.29694481	0.00000000	1000.00000000	4.03000%	4.99000%	5.17125%
M-9	0.00000000	5.04611106	5.04611106	0.00000000	1000.00000000	4.90000%	5.86000%	6.04125%
M-10	0.00000000	5.99333139	5.99333139	0.00000000	1000.00000000	6.00000%	6.58991%	6.39335%
CE	0.00000000	64.00074156	64.00074156	0.00000000	1000.00000000	3.50367%	2.91409%
P	0.00000000	7930627.2000	7930627.2000	0.00000000	1000.00000000
R	0.00000000	0.0000000	0.0000000	0.00000000	0.00000000
								* Estimated

(1) - The Class P Certificates do not accrue interest. Amounts appearing as Interest Distributions represent payments of Prepayment Charges.

Page 1

			MASTR Asset Backed Securities Trust 2005-NC1					Contact:
			Mortgage Pass Through Certificates, Series 2005-NC1					Brian Giel
								Account Administrator
								651-495-3844
			STATEMENT TO CERTIFICATEHOLDERS					brian.giel@usbank.com

Distribution Date:

08/25/05

Section 4.02 (ii), (xv) - INTEREST

		Monthly		Remaining	Reduction from the Allocation of:
	Interest	Interest	Interest	Unpaid		Prepayment	Relief Act
	Distribution	Distributable	Shortfall	Interest	Realized	Interest	Interest
Class	Amount	Amount	Amount	Amount	Losses	Shortfalls	Shortfalls
A-1	$860,851.37	$860,851.37	$0.00	$0.00	$0.00	$0.00	$0.00
A-2	$216,933.93	$216,933.93	$0.00	$0.00	$0.00	$0.00	$0.00
A-3	$302,571.96	$302,571.96	$0.00	$0.00	$0.00	$0.00	$0.00
A-4	$408,127.63	$408,127.63	$0.00	$0.00	$0.00	$0.00	$0.00
A-5	$53,556.32	$53,556.32	$0.00	$0.00	$0.00	$0.00	$0.00
M-1	$181,255.76	$181,255.76	$0.00	$0.00	$0.00	$0.00	$0.00
M-2	$140,393.11	$140,393.11	$0.00	$0.00	$0.00	$0.00	$0.00
M-3	$57,541.72	$57,541.72	$0.00	$0.00	$0.00	$0.00	$0.00
M-4	$60,555.12	$60,555.12	$0.00	$0.00	$0.00	$0.00	$0.00
M-5	$62,926.59	$62,926.59	$0.00	$0.00	$0.00	$0.00	$0.00
M-6	$51,171.46	$51,171.46	$0.00	$0.00	$0.00	$0.00	$0.00
M-7	$47,177.51	$47,177.51	$0.00	$0.00	$0.00	$0.00	$0.00
M-8	$42,122.95	$42,122.95	$0.00	$0.00	$0.00	$0.00	$0.00
M-9	$56,884.81	$56,884.81	$0.00	$0.00	$0.00	$0.00	$0.00
M-10	$20,563.12	$19,469.69	$0.00	$0.00	$0.00	$0.00	$0.00
CE	$1,944,775.13	$1,978,726.10	$0.00	$0.00	$33,950.97	$0.00	$0.00
P	$793,062.72	N/A	N/A	N/A	$0.00	$0.00	$0.00
Total	$5,300,471.21	$4,540,266.03	$0.00	$0.00	$33,950.97	$0.00	$0.00

Section 4.02 (xvi), (xvii)
PPIS & RAIS	Prepayment Interest Shortfalls not covered by the servicer pursuant to Section 3.24	$0.00
	Relief Act Interest Shortfalls	$0.00

Section 4.02 (xviii)
	Overcollateralized Amount	$30,386,759.32
	Overcollateralization Release Amount	$0.00
	Overcollateralization Deficiency (after all payments)	$0.00
	Overcollateralization Target Amount	$30,386,759.32
	Monthly Excess Cash Flow	$1,979,819.53

Credit Enhancement Percentage

28.091%

Section 4.02 (v), (vi)
POOL	Stated Principal Balance of Mortgage Loans and REO Properties	$761,064,753.69
	Stated Principal Balance of Mortgage Loans	$760,571,261.22
	Number of Mortgage Loans	4,450

Section 4.02 (vi)
WAC & WAM	Weighted Average Remaining Term to Maturity	344
	Weighted Average Mortgage Interest Rate	7.3346%

Section 4.02 (iv)
P&I ADVANCES		Aggregate Advances for the Collection Period						$1,512,604.35

Section 4.02 (vii)
DELINQUENCIES
				Stated Principal	Stated Principal
		Number	Number as %	Balance	Balance as %
	30-59 days delinquent	159	3.57303%	$22,934,163.47	3.01539%
	60-89 days delinquent	71	1.59551%	$13,091,574.19	1.72128%
	90 or more days delinquent	44	0.98876%	$6,285,906.45	0.82647%
	Foreclosures	65	1.46067%	$11,972,823.78	1.57419%
	Bankruptcies	24	0.53933%	$3,554,905.25	0.46740%

Page 2

			MASTR Asset Backed Securities Trust 2005-NC1					Contact:
			Mortgage Pass Through Certificates, Series 2005-NC1					Brian Giel
								Account Administrator
								651-495-3844
			STATEMENT TO CERTIFICATEHOLDERS					brian.giel@usbank.com

Distribution Date:

08/25/05

Section 4.02 (viii)
REO	Number of REO Loans	3
	Number of REO Loans as %	0.06742%
	Stated Principal Balance of REO Properties	$493,492.47
	Stated Principal Balance of REO Properties as %	0.06488%
	Total Book Value of REO Properties:	$494,433.53

Section 4.02 (xxi)
	Stepdown Date Occurrence	NO
	Trigger Event Occurrence	NO
	Cumulative Realized Loss as a Percentage of the Original Pool Balance	0.00363%

Section 4.02 (iii), (xii)
FEES	Trustee Fee	$10,010.54
	Servicing Fee (and any additional Servicer compensation)	$334,559.40
	Credit Risk Manager Fee	$6,673.69
	Extraordinary Trust Fund Expenses	$0.00

Section 4.02 (x), (xxii)
AVAILABLE FUNDS	Principal:
	Scheduled Principal	$616,262.50
	Principal Prepayments (includes curtailments)	$39,099,440.02
	Liquidation Proceeds	$28,783.88
	Total Principal	$39,744,486.40

Net Interest (net of servicing, trustee & Credit Risk Manager fee)

$4,541,359.46

Available Funds (total principal plus net interest)

$44,285,845.86

Section 4.02 (i)
PREPAYMENT
PENALTIES	Prepayment Charges allocated to Class P	793,062.72
	Servicer Prepayment Charge Payment Amounts allocated to Class P	$0.00

Section 4.02 (xi)
LOSSES	Current Realized Losses	$33,950.97
	Aggregate Realized Losses since Closing	$35,578.81

		Subsequent Recoveries						$0.00
		Aggregate Subsequent Recoveries since Closing						$0.00

Section 4.02 (xx)
		Aggregate Loss Severity Percentage						5.51174%

Page 3

			MASTR Asset Backed Securities Trust 2005-NC1					Contact:
			Mortgage Pass Through Certificates, Series 2005-NC1					Brian Giel
								Account Administrator
								651-495-3844
			STATEMENT TO CERTIFICATEHOLDERS					brian.giel@usbank.com

Distribution Date:

08/25/05

Section 4.02 (xxiii) - NET WAC RATE CARRYOVER AMOUNTS

	Net WAC Rate	Amounts	Amounts
Class	Carryover Amount	Paid	Unpaid
A-1	$0.00	$0.00	$0.00
A-2	$0.00	$0.00	$0.00
A-3	$0.00	$0.00	$0.00
A-4	$0.00	$0.00	$0.00
A-5	$0.00	$0.00	$0.00
M-1	$0.00	$0.00	$0.00
M-2	$0.00	$0.00	$0.00
M-3	$0.00	$0.00	$0.00
M-4	$0.00	$0.00	$0.00
M-5	$0.00	$0.00	$0.00
M-6	$0.00	$0.00	$0.00
M-7	$0.00	$0.00	$0.00
M-8	$0.00	$0.00	$0.00
M-9	$0.00	$0.00	$0.00
M-10	$1,093.43	$1,093.43	$0.00

Section 4.02 (xxiv) - PAYMENTS MADE UNDER CAP CONTRACTS
	Group 1 Cap Contract	0.00
	Group 2 Cap Contract	0.00
	Mezzanine Contract	0.00

Section 4.02 (xiv) - ENDING BALANCE FACTORS

			Class	Factor
			A-1	0.714779
			A-2	0.714779
			A-3	0.454200
			A-4	1.000000
			A-5	1.000000
			M-1	1.000000
			M-2	1.000000
			M-3	1.000000
			M-4	1.000000
			M-5	1.000000
			M-6	1.000000
			M-7	1.000000
			M-8	1.000000
			M-9	1.000000
			M-10	1.000000
			CE	0.776396
			P	1.000000

Page 4

MASTR ALTERNATIVE LOAN TRUST 2005-NC1 8-K