IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

External Parties

Table of Contents

Page

Seller

1. Certificate Payment Report

IndyMac Bank

2. Collection Account Report

3. Credit Enhancement Report

Servicer(s)

4. Collateral Report

IndyMac Bank

5. Delinquency Report

6. REO Report

Underwriter(s)

7. Foreclosure Report

Bear Stearns & Co.

8. Prepayment Report

9. Prepayment Detail Report

10. Realized Loss Report

11. Realized Loss Detail Report

12. Triggers and Adj. Cert. Report

13. Other Related Information

Total Number of Pages

Dates

Contacts

Cut-Off Date:

June 01, 2007

Marion Hogan

Close Date:

June 29, 2007

Administrator

First Distribution Date:

July 25, 2007

(714) 247-6282

marion.c.hogan@db.com

Address:

Distribution Date:

November 26, 2007

1761 East St. Andrew Place, Santa Ana, CA 92705

Record Date:

October 31, 2007

Factor Information:

(800) 735-7777

November 23, 2007

Main Phone Number:

(714) 247-6000

Determination Date:

November 15, 2007

https://tss.sfs.db.com/investpublic

Page 1 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Certificate Payment Report
Current Period Distribution -
			Prior						Current
			Prior

	Class	Original	Principal			Total	Realized	Deferred	Principal

Class	Type	Face Value	Balance	Interest	Principal	Distribution	Loss	Interest	Balance
			(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)
1-A-1	INT	141,278,000.00	139,444,075.92	697,220.38	120,001.54	817,221.92	0.00	0.00	139,324,074.38
1-A-1	INT	141,278,000.00	139,444,075.92	697,220.38	120,001.54	817,221.92	0.00	0.00	139,324,074.38
1-A-2	INT	21,298,000.00	21,298,000.00	106,490.00	0.00	106,490.00	0.00	0.00	21,298,000.00
1-A-3	INT	13,922,550.00	13,922,550.00	69,612.75	0.00	69,612.75	0.00	0.00	13,922,550.00
1-A-4	INT	5,580,000.00	5,580,000.00	27,900.00	0.00	27,900.00	0.00	0.00	5,580,000.00
2-A-1	INT	77,876,000.00	72,199,072.15	376,036.83	624,310.60	1,000,347.43	0.00	0.00	71,574,761.55
2-A-2	INT	14,015,800.00	14,015,800.00	72,998.96	0.00	72,998.96	0.00	0.00	14,015,800.00
2-A-3	INT	51,051,000.00	48,212,536.11	211,030.29	312,155.30	523,185.59	0.00	0.00	47,900,380.81
2-A-4	NTL	0.00	0.00	70,209.51	0.00	70,209.51	0.00	0.00	0.00
2-A-5	INT	7,130,200.00	7,130,200.00	37,136.46	0.00	37,136.46	0.00	0.00	7,130,200.00
2-A-6	INT	3,080,000.00	3,080,000.00	16,041.67	0.00	16,041.67	0.00	0.00	3,080,000.00
3-A-1	INT	94,945,912.00	92,627,393.52	471,880.24	650,064.75	1,121,944.99	0.00	0.00	91,977,328.77
I-PO	INT	554,079.47	552,747.40	0.00	347.63	347.63	0.00	0.00	552,399.77
I-B-1	INT	10,948,400.00	10,916,198.28	56,656.46	5,256.17	61,912.63	0.00	0.00	10,910,942.11
I-B-2	INT	4,127,800.00	4,115,659.21	21,360.79	1,981.70	23,342.49	0.00	0.00	4,113,677.51
I-B-3	INT	2,333,100.00	2,326,237.83	12,073.47	1,120.09	13,193.56	0.00	0.00	2,325,117.74
II-B-1	INT	2,298,692.00	2,266,744.08	11,547.68	8,127.34	19,675.02	0.00	0.00	2,258,616.74
II-B-2	INT	1,099,374.00	1,084,094.56	5,522.80	3,886.99	9,409.79	0.00	0.00	1,080,207.57
II-B-3	INT	499,715.00	492,769.81	2,510.36	1,766.81	4,277.17	0.00	0.00	491,003.00
I-X	NTL	0.00	0.00	114,621.24	0.00	114,621.24	0.00	0.00	0.00
I-B-4	INT	2,512,500.00	2,505,110.17	13,001.84	1,206.22	14,208.06	0.00	0.00	2,503,903.95
I-B-5	INT	1,794,700.00	1,789,421.38	9,287.32	861.61	10,148.93	0.00	0.00	1,788,559.77
I-B-6	INT	1,435,834.00	1,431,610.87	7,430.24	689.32	8,119.56	0.00	0.00	1,430,921.55
II-B-4	INT	449,744.00	443,493.32	2,259.33	1,590.13	3,849.46	0.00	0.00	441,903.19
II-B-5	INT	399,772.00	394,215.85	2,008.29	1,413.45	3,421.74	0.00	0.00	392,802.40
II-B-6	INT	249,857.00	246,384.41	1,255.18	883.40	2,138.58	0.00	0.00	245,501.01
P	INT	100.00	100.00	15,111.87	0.00	15,111.87	0.00	0.00	100.00
L	INT	0.00	0.00	5,770.71	0.00	5,770.71	0.00	0.00	0.00
A-R	INT	100.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00


Total		458,881,229.47	446,074,414.87	2,436,974.67	1,735,663.05	4,172,637.72	0.00	0.00	444,338,751.82
Total





Page 2 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face Value
					Orig. Principal	Prior				Current
					Orig. Principal	Prior				Current
	Period	Period			(with Notional)	Principal			Total	Principal
Class	Starting	Ending	Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
			Method
					(1)	(1)	(2)	(3)	(4)=(2)+(3)	(5)

1-A-1	10/01/07	10/30/07	F-30/360	761128AA5	141,278,000.00	987.019040	4.935095	0.849400	5.784495	986.169640
1-A-1	10/01/07	10/30/07	F-30/360	761128AA5	141,278,000.00	987.019040	4.935095	0.849400	5.784495	986.169640
1-A-2	10/01/07	10/30/07	F-30/360	761128AB3	21,298,000.00	1,000.000000	5.000000	0.000000	5.000000	1,000.000000
1-A-3	10/01/07	10/30/07	F-30/360	761128AC1	13,922,550.00	1,000.000000	5.000000	0.000000	5.000000	1,000.000000
1-A-4	10/01/07	10/30/07	F-30/360	761128BL0	5,580,000.00	1,000.000000	5.000000	0.000000	5.000000	1,000.000000
2-A-1	10/01/07	10/30/07	F-30/360	761128AD9	77,876,000.00	927.102986	4.828661	8.016727	12.845388	919.086260
2-A-2	10/01/07	10/30/07	F-30/360	761128AE7	14,015,800.00	1,000.000000	5.208333	0.000000	5.208333	1,000.000000
2-A-3	10/01/07	10/30/07	F-30/360	761128AF4	51,051,000.00	944.399446	4.133715	6.114578	10.248293	938.284868
2-A-4	10/01/07	10/30/07	F-30/360	761128AG2	51,051,000.00	944.399446	1.375282	0.000000	1.375282	938.284868
2-A-5	10/01/07	10/30/07	F-30/360	761128AH0	7,130,200.00	1,000.000000	5.208334	0.000000	5.208334	1,000.000000
2-A-6	10/01/07	10/30/07	F-30/360	761128BM8	3,080,000.00	1,000.000000	5.208334	0.000000	5.208334	1,000.000000
3-A-1	10/01/07	10/30/07	A-30/360	761128AJ6	94,945,912.00	975.580639	4.969990	6.846685	11.816675	968.733954
I-PO	10/01/07	10/30/07	F-30/360	761128AL1	554,079.47	997.595886	0.000000	0.627401	0.627401	996.968485
I-B-1	10/01/07	10/30/07	A-30/360	761128AN7	10,948,400.00	997.058774	5.174862	0.480086	5.654948	996.578688
I-B-2	10/01/07	10/30/07	A-30/360	761128AP2	4,127,800.00	997.058775	5.174861	0.480086	5.654947	996.578688
I-B-3	10/01/07	10/30/07	A-30/360	761128AQ0	2,333,100.00	997.058776	5.174862	0.480087	5.654948	996.578689
II-B-1	10/01/07	10/30/07	A-30/360	761128AR8	2,298,692.00	986.101696	5.023587	3.535637	8.559224	982.566059
II-B-2	10/01/07	10/30/07	A-30/360	761128AS6	1,099,374.00	986.101691	5.023586	3.535639	8.559226	982.566051
II-B-3	10/01/07	10/30/07	A-30/360	761128AT4	499,715.00	986.101698	5.023583	3.535635	8.559219	982.566063
I-X	10/01/07	10/30/07	F-30/360	761128AK3	22,366,313.10	946.103311	5.124727	0.000000	5.124727	941.684370
I-B-4	10/01/07	10/30/07	A-30/360	761128AU1	2,512,500.00	997.058774	5.174862	0.480088	5.654949	996.578687
I-B-5	10/01/07	10/30/07	A-30/360	761128AV9	1,794,700.00	997.058773	5.174859	0.480086	5.654945	996.578687
I-B-6	10/01/07	10/30/07	A-30/360	761128AW7	1,435,834.00	997.058762	5.174860	0.480083	5.654943	996.578678
II-B-4	10/01/07	10/30/07	A-30/360	761128AX5	449,744.00	986.101693	5.023591	3.535634	8.559225	982.566060
II-B-5	10/01/07	10/30/07	A-30/360	761128AY3	399,772.00	986.101703	5.023588	3.535640	8.559229	982.566063
II-B-6	10/01/07	10/30/07	F-30/360	761128AZ0	249,857.00	986.101690	5.023593	3.535622	8.559216	982.566068
P	10/01/07	10/30/07	A-30/360	761128BA4	100.00	1,000.000000	151,118.700000	0.000000	151,118.700000	1,000.000000
L	10/01/07	10/30/07	A-30/360	761128BB2	0.00	0.000000	0.000000	0.000000	0.000000	0.000000
A-R	10/01/07	10/30/07	A-30/360	761128AM9	100.00	0.000000	0.000000	0.000000	0.000000	0.000000




Page 3 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


Distribution to Date -
									Current


	Original		Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal

Class	Face Value	Interest	Principal	Principal	Principal	Distribution	Loss	Interest	Balance
(1)	(2)	(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)
1-A-1	141,278,000.00	3,508,917.17	1,449,248.21	504,677.41	1,953,925.62	5,462,842.79	0.00	0.00	139,324,074.38
1-A-2	21,298,000.00	532,450.00	0.00	0.00	0.00	532,450.00	0.00	0.00	21,298,000.00
1-A-3	13,922,550.00	348,063.75	0.00	0.00	0.00	348,063.75	0.00	0.00	13,922,550.00
1-A-4	5,580,000.00	139,500.00	0.00	0.00	0.00	139,500.00	0.00	0.00	5,580,000.00
2-A-1	77,876,000.00	1,978,554.10	5,884,067.65	417,170.70	6,301,238.45	8,279,792.55	0.00	0.00	71,574,761.55
2-A-2	14,015,800.00	364,994.80	0.00	0.00	0.00	364,994.80	0.00	0.00	14,015,800.00
2-A-3	51,051,000.00	1,171,912.98	2,942,033.83	208,585.35	3,150,619.19	4,322,532.17	0.00	0.00	47,900,380.81
2-A-4	0.00	289,373.23	0.00	0.00	0.00	289,373.23	0.00	0.00	0.00
2-A-5	7,130,200.00	185,682.30	0.00	0.00	0.00	185,682.30	0.00	0.00	7,130,200.00
2-A-6	3,080,000.00	80,208.35	0.00	0.00	0.00	80,208.35	0.00	0.00	3,080,000.00
3-A-1	94,945,912.00	2,394,318.39	1,318,403.88	1,650,184.81	2,968,583.23	5,362,907.08	0.00	0.00	91,977,328.77
I-PO	554,079.47	0.00	0.00	1,362.62	1,679.70	1,679.70	0.00	0.00	552,399.77
I-B-1	10,948,400.00	283,801.15	0.00	37,457.89	37,457.89	321,259.04	0.00	0.00	10,910,942.11
I-B-2	4,127,800.00	106,999.60	0.00	14,122.49	14,122.49	121,122.09	0.00	0.00	4,113,677.51
I-B-3	2,333,100.00	60,477.92	0.00	7,982.26	7,982.26	68,460.18	0.00	0.00	2,325,117.74
II-B-1	2,298,692.00	58,141.14	0.01	40,075.25	40,075.26	98,216.40	0.00	0.00	2,258,616.74
II-B-2	1,099,374.00	27,806.62	0.00	19,166.43	19,166.43	46,973.05	0.00	0.00	1,080,207.57
II-B-3	499,715.00	12,639.35	0.00	8,712.00	8,712.00	21,351.35	0.00	0.00	491,003.00
I-X	0.00	595,295.94	0.00	0.00	0.00	595,295.94	0.00	0.00	0.00
I-B-4	2,512,500.00	65,128.27	0.00	8,596.05	8,596.05	73,724.32	0.00	0.00	2,503,903.95
I-B-5	1,794,700.00	46,521.67	0.00	6,140.23	6,140.23	52,661.90	0.00	0.00	1,788,559.77
I-B-6	1,435,834.00	37,219.26	0.00	4,912.39	4,912.39	42,131.65	0.06	0.00	1,430,921.55
II-B-4	449,744.00	11,375.45	0.00	7,840.81	7,840.81	19,216.26	0.00	0.00	441,903.19
II-B-5	399,772.00	10,111.49	0.00	6,969.60	6,969.60	17,081.09	0.00	0.00	392,802.40
II-B-6	249,857.00	6,319.67	0.00	4,355.99	4,355.99	10,675.66	0.00	0.00	245,501.01
P	100.00	31,918.24	0.00	0.00	0.00	31,918.24	0.00	0.00	100.00
L	0.00	11,528.02	0.00	0.00	0.00	11,528.02	0.00	0.00	0.00
A-R	100.00	0.51	16.72	83.28	100.00	100.51	0.00	0.00	0.00

Total	458,881,229.47	12,359,259.37	11,593,770.30	2,948,395.56	14,542,477.59	26,901,742.42	0.06	0.00	444,338,751.82




Page 4 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


Interest Detail -
	Pass	Prior Principal		Non-	Prior	Unscheduled		Paid or	Current
	Pass	Prior Principal		Non-	Prior	Unscheduled		Paid or

	Through	(with Notional)	Accrued	Supported	Unpaid	Interest	Optimal	Deferred	Unpaid

Class	Rate	Balance	Interest	Interest SF	Interest	Adjustment	Interest	Interest	Interest
			(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)
1-A-1	6.00000%	139,444,075.92	697,220.38	0.00	0.00	0.00	697,220.38	697,220.38	0.00
1-A-2	6.00000%	21,298,000.00	106,490.00	0.00	0.00	0.00	106,490.00	106,490.00	0.00
1-A-3	6.00000%	13,922,550.00	69,612.75	0.00	0.00	0.00	69,612.75	69,612.75	0.00
1-A-4	6.00000%	5,580,000.00	27,900.00	0.00	0.00	0.00	27,900.00	27,900.00	0.00
2-A-1	6.25000%	72,199,072.15	376,036.83	0.00	0.00	0.00	376,036.83	376,036.83	0.00
2-A-2	6.25000%	14,015,800.00	72,998.96	0.00	0.00	0.00	72,998.96	72,998.96	0.00
2-A-3	5.25250%	48,212,536.11	211,030.29	0.00	0.00	0.00	211,030.29	211,030.29	0.00
2-A-4	1.74750%	48,212,536.11	70,209.51	0.00	0.00	0.00	70,209.51	70,209.51	0.00
2-A-5	6.25000%	7,130,200.00	37,136.46	0.00	0.00	0.00	37,136.46	37,136.46	0.00
2-A-6	6.25000%	3,080,000.00	16,041.67	0.00	0.00	0.00	16,041.67	16,041.67	0.00
3-A-1	6.11327%	92,627,393.52	471,880.24	0.00	0.00	0.00	471,880.24	471,880.24	0.00
I-PO	0.00000%	552,747.40	0.00	0.00	0.00	0.00	0.00	0.00	0.00
I-B-1	6.22815%	10,916,198.28	56,656.46	0.00	0.00	0.00	56,656.46	56,656.46	0.00
I-B-2	6.22815%	4,115,659.21	21,360.79	0.00	0.00	0.00	21,360.79	21,360.79	0.00
I-B-3	6.22815%	2,326,237.83	12,073.47	0.00	0.00	0.00	12,073.47	12,073.47	0.00
II-B-1	6.11327%	2,266,744.08	11,547.68	0.00	0.00	0.00	11,547.68	11,547.68	0.00
II-B-2	6.11327%	1,084,094.56	5,522.80	0.00	0.00	0.00	5,522.80	5,522.80	0.00
II-B-3	6.11327%	492,769.81	2,510.36	0.00	0.00	0.00	2,510.36	2,510.36	0.00
I-X	6.50000%	21,160,842.88	114,621.23	0.00	0.00	0.00	114,621.23	114,621.24	0.00
I-B-4	6.22815%	2,505,110.17	13,001.84	0.00	0.00	0.00	13,001.84	13,001.84	0.00
I-B-5	6.22815%	1,789,421.38	9,287.32	0.00	0.00	0.00	9,287.32	9,287.32	0.00
I-B-6	6.22815%	1,431,610.87	7,430.24	0.00	0.00	0.00	7,430.24	7,430.24	0.00
II-B-4	6.11327%	443,493.32	2,259.33	0.00	0.00	0.00	2,259.33	2,259.33	0.00
II-B-5	6.11327%	394,215.85	2,008.29	0.00	0.00	0.00	2,008.29	2,008.29	0.00
II-B-6	6.11327%	246,384.41	1,255.18	0.00	0.00	0.00	1,255.18	1,255.18	0.00
P	0.00000%	100.00	0.00	0.00	0.00	0.00	0.00	15,111.87	0.00
L	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	5,770.71	0.00
A-R	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00


Total		515,447,793.86	2,416,092.08	0.00	0.00	0.00	2,416,092.08	2,436,974.67	0.00



Page 5 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Collection Account Report
SUMMARY

	Group 3	Group 2	Group 1	Total
Principal Collections	667,732.87	940,510.15	127,420.03	1,735,663.05
Principal Withdrawals	0.00	0.00	0.00	0.00
Principal Other Accounts	0.00	0.00	0.00	0.00
TOTAL NET PRINCIPAL	667,732.87	940,510.15	127,420.03	1,735,663.05
Interest Collections	515,092.27	925,530.56	1,050,107.01	2,490,729.83
Interest Withdrawals	-0.00	-0.00	-0.00	-0.00
Interest Other Accounts	7,152.51	11,847.08	4,294.25	20,882.58
Interest Fees	-18,108.38	-26,333.92	-30,195.45	-74,637.75
TOTAL NET INTEREST	496,983.89	900,715.13	1,024,163.77	2,436,974.66
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION	1,164,716.76	1,841,225.28	1,151,583.80	4,172,637.71




PRINCIPAL - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Principal Received	349,780.65	58,960.90	109,536.95	518,278.50
Curtailments	41,224.23	16,549.27	17,883.08	75,656.58
Prepayments In Full	276,727.99	864,999.98	0.00	1,141,727.97
Repurchased/Substitutions	0.00	0.00	0.00	0.00
Liquidations	0.00	0.00	0.00	0.00
Insurance Principal	0.00	0.00	0.00	0.00
Other Additional Principal	0.00	0.00	0.00	0.00
Delinquent Principal	-50,053.27	-14,040.14	-14,333.11	-78,426.52
Realized Losses	-0.00	-0.00	-0.00	-0.00
Advanced Principal	50,053.27	14,040.14	14,333.11	78,426.52
TOTAL PRINCIPAL COLLECTED	667,732.87	940,510.15	127,420.03	1,735,663.05




PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK




PRINCIPAL - OTHER ACCOUNTS

	Group 3	Group 2	Group 1	Total
TOTAL PRINCIPAL OTHER ACCOUNTS	0.00	0.00	0.00	0.00






Page 6 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


INTEREST - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Interest	518,138.56	931,716.10	1,054,649.62	2,504,504.28
Repurchased/Substitution Interest	0.00	0.00	0.00	0.00
Liquidation Interest	0.00	0.00	0.00	0.00
Insurance Interest	0.00	0.00	0.00	0.00
Other Additional Interest	0.00	0.00	0.00	0.00
Prepayment Interest Shortfalls	-0.00	-363.56	-0.00	-363.56
Delinquent Interest	-79,661.52	-223,137.64	-148,224.82	-451,023.98
Compensating Interest	0.00	363.56	0.00	363.56
Civil Relief Act Shortfalls	-0.00	-0.00	-0.00	-0.00
Interest Advanced	76,615.23	216,952.11	143,682.20	437,249.54
Interest Realized Loss	0.00	0.00	0.00	0.00
TOTAL INTEREST COLLECTED	515,092.27	925,530.56	1,050,107.01	2,490,729.83




INTEREST - WITHDRAWALS

	Group 3	Group 2	Group 1	Total
TOTAL INTEREST WITHDRAWALS	0.00	0.00	0.00	0.00




INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
	Group 3	Group 2	Group 1	Total
Prepayment Charges	5,634.02	9,435.82	42.03	15,111.87
Prepayment Charges Waived. *

Late Payment Fee paid by the servicer	1,518.49	2,411.26	1,840.96	5,770.71
Late Payment Fee collected. *
Late Payment Fee waived	326.48	145.10	0.00	471.58

TOTAL INTEREST OTHER ACCOUNTS	7,152.51	11,847.08	4,294.25	20,882.58
* Information not available with Trustee




INTEREST FEES
INTEREST FEES
	Group 3	Group 2	Group 1	Total
Current Servicing Fees	17,277.68	19,933.16	28,341.74	65,552.59
Trustee Fees	609.72	971.02	1,207.22	2,787.96
PMI	220.98	5,429.74	646.48	6,297.19
TOTAL INTEREST FEES	18,108.38	26,333.92	30,195.45	74,637.75



Page 7 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Credit Enhancement Report

ACCOUNTS

SPACE INTENTIONALLY LEFT BLANK

INSURANCE

SPACE INTENTIONALLY LEFT BLANK

STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK

Page 8 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Collateral Report


COLLATERAL



		Group 3	Group 2	Group 1	Total



Loan Count:
Loan Count:


Original	306	289	295	890
Prior	304	276	294	874
Prefunding	0	0	0	0
Scheduled Paid Offs	-0	-0	-0	-0
Full Voluntary Prepayments	-1	-2	-0	-3
Repurchases	-0	-0	-0	-0
Liquidations	-0	-0	-0	-0
Current	303	274	294	871
Principal Balance:


Original	99,943,171.46	163,919,344.71	195,018,618.65	458,881,134.82
Prior	97,555,095.54	155,363,579.97	193,155,639.35	446,074,314.86
Prefunding	0.00	0.00	0.00	0.00
Scheduled Principal	-349,780.65	-58,960.90	-109,536.95	-518,278.50
Partial Prepayments	-41,224.23	-16,549.27	-17,883.08	-75,656.58
Full Voluntary Prepayments	-276,727.99	-864,999.98	-0.00	-1,141,727.97
Repurchases	-0.00	-0.00	-0.00	-0.00
Liquidations	-0.00	-0.00	-0.00	-0.00
Current	96,887,362.67	154,423,069.82	193,028,219.32	444,338,651.81





PREFUNDING

SPACE INTENTIONALLY LEFT BLANK

Page 9 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


CHARACTERISTICS
CHARACTERISTICS

	Group 3	Group 2	Group 1	Total
Weighted Average Coupon Original	6.37297%	7.21512%	6.55302%	6.75032%
Weighted Average Coupon Prior	6.37264%	7.21169%	6.55212%	6.74609%
Weighted Average Coupon Current	6.37349%	7.19641%	6.55212%	6.73745%
Weighted Average Months to Maturity Original	175	358	358	318
Weighted Average Months to Maturity Prior	171	355	356	315
Weighted Average Months to Maturity Current	170	354	355	314
Weighted Avg Remaining Amortization Term Original	175	364	362	322
Weighted Avg Remaining Amortization Term Prior	171	360	359	319
Weighted Avg Remaining Amortization Term Current	170	360	358	318
Weighted Average Seasoning Original	4.08	1.48	1.28	1.96
Weighted Average Seasoning Prior	7.08	4.44	4.28	4.95
Weighted Average Seasoning Current	8.09	5.43	5.28	5.94

Page 10 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


ARM CHARACTERISTICS
ARM CHARACTERISTICS

	Group 3	Group 2	Group 1	Total
Weighted Average Margin Original	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Margin Prior	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Margin Current	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Max Rate Original	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Max Rate Prior	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Max Rate Current	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Min Rate Original	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Min Rate Prior	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Min Rate Current	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Cap Up Original	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Cap Up Prior	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Cap Up Current	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Cap Down Original	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Cap Down Prior	0.00000%	0.00000%	0.00000%	0.00000%
Weighted Average Cap Down Current	0.00000%	0.00000%	0.00000%	0.00000%




SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

	Group 3	Group 2	Group 1	Total




Current Servicing Fees	17,277.68	19,933.16	28,341.74	65,552.59
Delinquent Servicing Fees	3,046.30	6,185.54	4,542.62	13,774.46
TOTAL SERVICING FEES	20,323.98	26,118.71	32,884.36	79,327.05


Total Servicing Fees	20,323.98	26,118.71	32,884.36	79,327.05
Compensating Interest	-0.00	-363.56	-0.00	-363.56
Delinquent Servicing Fees	-3,046.30	-6,185.54	-4,542.62	-13,774.46
COLLECTED SERVICING FEES	17,277.68	19,569.60	28,341.74	65,189.03


Total Advanced Interest	76,615.23	216,952.11	143,682.20	437,249.54
Total Advanced Principal	50,053.27	14,040.14	14,333.11	78,426.52
Aggregate Advances with respect to this Distribution	126,668.50	230,992.24	158,015.30	515,676.04





ADDITIONAL COLLATERAL INFORMATION
ADDITIONAL COLLATERAL INFORMATION
	Group 3	Group 2	Group 1	Total
Prepayment Interest Shortfall (PPIS)	0.00	363.56	0.00	363.56
Compensating Interest	0.00	(363.56)	0.00	(363.56)
Net Prepayment Interest Shortfall (PPIS)	0.00	0.00	0.00	0.00

Weighted Average Net Mortgage Rate	6.113270%	6.945231%	6.336309%	6.499613%






Page 11 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Delinquency Report

TOTAL
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		10,473,859.26	1,793,513.45	1,942,008.34	14,209,381.05
	% Balance		2.36%	0.40%	0.44%	3.20%
	# Loans		23	5	5	33
	% # Loans		2.64%	0.57%	0.57%	3.79%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	10,473,859.26	1,793,513.45	1,942,008.34	14,209,381.05
	% Balance	0.00%	2.36%	0.40%	0.44%	3.20%
	# Loans	0	23	5	5	33
	% # Loans	0.00%	2.64%	0.57%	0.57%	3.79%

Page 12 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


GROUP 1
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		1,852,721.48	517,304.48	462,938.87	2,832,964.83
	% Balance		0.96%	0.27%	0.24%	1.47%
	# Loans		3	1	2	6
	% # Loans		1.02%	0.34%	0.68%	2.04%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	1,852,721.48	517,304.48	462,938.87	2,832,964.83
	% Balance	0.00%	0.96%	0.27%	0.24%	1.47%
	# Loans	0	3	1	2	6
	% # Loans	0.00%	1.02%	0.34%	0.68%	2.04%

Page 13 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


GROUP 2
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		7,651,165.36	1,008,208.97	1,479,069.47	10,138,443.80
	% Balance		4.95%	0.65%	0.96%	6.57%
	# Loans		15	3	3	21
	% # Loans		5.47%	1.09%	1.09%	7.66%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	7,651,165.36	1,008,208.97	1,479,069.47	10,138,443.80
	% Balance	0.00%	4.95%	0.65%	0.96%	6.57%
	# Loans	0	15	3	3	21
	% # Loans	0.00%	5.47%	1.09%	1.09%	7.66%

Page 14 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


GROUP 3
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		969,972.42	268,000.00	0.00	1,237,972.42
	% Balance		1.00%	0.28%	0.00%	1.28%
	# Loans		5	1	0	6
	% # Loans		1.65%	0.33%	0.00%	1.98%
FORECLOSURE	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
REO	Balance	0.00	0.00	0.00	0.00	0.00
	% Balance	0.00%	0.00%	0.00%	0.00%	0.00%
	# Loans	0	0	0	0	0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	969,972.42	268,000.00	0.00	1,237,972.42
	% Balance	0.00%	1.00%	0.28%	0.00%	1.28%
	# Loans	0	5	1	0	6
	% # Loans	0.00%	1.65%	0.33%	0.00%	1.98%

Page 15 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

REO Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

Page 16 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Foreclosure Report

Loan Number

Original

Stated

Current

State &

First

Principal

Paid to

Note

LTV at

Original

Payment

Loan Group

Balance

Date

Rate

Origination

Term

Date

Page 17 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

		Group 3	Group 2	Group 1	Total


Current


Number of Paid in Full Loans	1	2	0	3
Number of Repurchased Loans	0	0	0	0
Total Number of Loans Prepaid in Full	1	2	0	3
Curtailments Amount	41,224.23	16,549.27	17,883.08	75,656.58
Paid in Full Balance	276,727.99	864,999.98	0.00	1,141,727.97
Repurchased Loans Balance	0.00	0.00	0.00	0.00
Total Prepayment Amount	317,952.22	881,549.25	17,883.08	1,217,384.55
Cumulative


Number of Paid in Full Loans	3	14	1	18
Number of Repurchased Loans	0	1	0	1
Total Number of Loans Prepaid in Full	3	15	1	19
Paid in Full Balance	1,050,113.99	8,631,283.01	971,733.92	10,653,130.92
Repurchased Loans Balance	0.00	375,435.71	0.00	375,435.71
Curtailments Amount	268,306.63	194,845.43	477,804.41	940,956.47
Total Prepayment Amount	1,318,420.62	9,201,564.15	1,449,538.33	11,969,523.10

Page 18 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


VOLUNTARY PREPAYMENTS RATES - Including Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.33%	0.57%	0.01%	0.27%
3 Months Avg SMM	0.41%	1.64%	0.18%	0.74%
12 Months Avg SMM	0.27%	1.15%	0.15%	0.53%
Avg SMM Since Cut-off	0.27%	1.15%	0.15%	0.53%



CPR	3.86%	6.60%	0.11%	3.23%
3 Months Avg CPR	4.77%	18.02%	2.11%	8.58%
12 Months Avg CPR	3.18%	12.96%	1.78%	6.17%
Avg CPR Since Cut-off	3.18%	12.96%	1.78%	6.17%



PSA	238.17%	608.31%	10.52%	271.67%
3 Months Avg PSA Approximation	336.42%	2,026.66%	246.72%	866.71%
12 Months Avg PSA Approximation	261.22%	1,875.66%	270.94%	780.26%
Avg PSA Since Cut-off Approximation	261.22%	1,875.66%	270.94%	780.26%


(*) SMM, CPR, PSA Figures Include Liquidated Balances

Page 19 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

PREPAYMENT CALCULATION METHODOLOGY - Including Liquidated Balances

Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidated Balances)/(Beg Principal Balance - Sched Principal)

Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)

PSA Standard Prepayment Model: CPR/(0.20%*min(30,WAS))

Average SMM over period between nth month and mth month (AvgSMMn,m): 1 - [(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/(0.20%*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 20 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


VOLUNTARY PREPAYMENTS RATES - Excluding Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.33%	0.57%	0.01%	0.27%
3 Months Avg SMM	0.41%	1.64%	0.18%	0.74%
12 Months Avg SMM	0.27%	1.15%	0.15%	0.53%
Avg SMM Since Cut-off	0.27%	1.15%	0.15%	0.53%



CPR	3.86%	6.60%	0.11%	3.23%
3 Months Avg CPR	4.77%	18.02%	2.11%	8.58%
12 Months Avg CPR	3.18%	12.96%	1.78%	6.17%
Avg CPR Since Cut-off	3.18%	12.96%	1.78%	6.17%



PSA	238.17%	608.31%	10.52%	271.67%
3 Months Avg PSA Approximation	336.42%	2,026.66%	246.72%	866.71%
12 Months Avg PSA Approximation	261.22%	1,875.66%	270.94%	780.26%
Avg PSA Since Cut-off Approximation	261.22%	1,875.66%	270.94%	780.26%

(*) SMM, CPR, PSA Figures Exclude Liquidated Balances
(*) SMM, CPR, PSA Figures Exclude Liquidated Balances

Page 21 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

PREPAYMENT CALCULATION METHODOLOGY - Excluding Liquidated Balances

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/(0.20%*min(30,WAS))

Average SMM over period between nth month and mth month (AvgSMMn,m): 1 - [(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/(0.20%*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 22 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Prepayment Detail Report

Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution

Loan Number

Original

Current

State &

Type Prepayment

First

Loan

Principal

Prepayment

Note

LTV at

Payment

Loan Group

Status

Balance

Amount

Date

Rate

Origination

Original Term

Date

124303252 2

315,000.00

314,999.98

25-Oct-2007

7.125%

CA - 42.68%

Paid Off - 360

01-Nov-2006

125841254 3

280,000.00

276,727.99

31-Oct-2007

7.990%

PA - 59.57%

Paid Off - 180

01-Jul-2007

126518545 2

550,000.00

14-Nov-2007

7.500%

CA - 44.00%

Paid Off - 360

01-Jul-2007

TOTAL

1,145,000.00

1,141,727.97

Page 23 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Realized Loss Report

COLLATERAL REALIZED LOSSES


		Group 3	Group 2	Group 1	Total


Current





	Subsequent Recoveries		0.00	0.00	0.00	0.00

	Number of Loans Liquidated		0	0	0	0
	Collateral Principal Realized Loss/(Gain) Amount		0.00	0.00	0.00	0.00
	Collateral Interest Realized Loss/(Gain) Amount		0.00	0.00	0.00	0.00
Net Liquidation Proceeds		0.00	0.00	0.00	0.00
Cumulative




	Number of Loans Liquidated		0	0	0	0

	Collateral Realized Loss/(Gain) Amount		0.00	0.00	0.00	0.00
	Net Liquidation Proceeds		0.00	0.00	0.00	0.00
Cumulative Subsequent Recoveries		0.00	0.00	0.00	0.00



	Special Hazard Loss Coverage Amt					4,588,810.00
	Fraud Loss Coverage Amt					8,178,190.00
	Bankrupt Loss Coverage Amt					200,000.00

	Class B-6 Writedown Amount					0.00
	Class B-5 Writedown Amount					0.00
	Class B-4 Writedown Amount					0.00
	Class B-3 Writedown Amount					0.00
	Class B-2 Writedown Amount					0.00
	Class B-1 Writedown Amount					0.00

Page 24 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


DEFAULT SPEEDS
DEFAULT SPEEDS
	Group 3	Group 2	Group 1	Total




MDR	0.00%	0.00%	0.00%	0.00%
3 Months Avg MDR	0.00%	0.00%	0.00%	0.00%
12 Months Avg MDR	0.00%	0.00%	0.00%	0.00%
Avg MDR Since Cut-off	0.00%	0.00%	0.00%	0.00%


CDR	0.00%	0.00%	0.00%	0.00%
3 Months Avg CDR	0.00%	0.00%	0.00%	0.00%
12 Months Avg CDR	0.00%	0.00%	0.00%	0.00%
Avg CDR Since Cut-off	0.00%	0.00%	0.00%	0.00%


SDA	0.00%	0.00%	0.00%	0.00%
3 Months Avg SDA Approximation	0.00%	0.00%	0.00%	0.00%
12 Months Avg SDA Approximation	0.00%	0.00%	0.00%	0.00%
Avg SDA Since Cut-off Approximation	0.00%	0.00%	0.00%	0.00%


Principal Only Loss Severity Approx for Current Period	0.00%	0.00%	0.00%	0.00%
3 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
12 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
Avg Loss Severity Approximation Since Cut-Off	0.00%	0.00%	0.00%	0.00%


Principal & Interest Loss Severity Approx for Current Period	0.00%	0.00%	0.00%	0.00%
3 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
12 Months Avg Loss Severity Approximation	0.00%	0.00%	0.00%	0.00%
Avg Loss Severity Approximation Since Cut-Off	0.00%	0.00%	0.00%	0.00%

Page 25 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

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)

Principal Only Loss Severity Approximation for current period:

Sum(Principal Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

Principal & Interest Loss Severity Approximation for current period:

Sum(Principal & Interest Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

Average Loss Severity Approximation over period between nth month and mth month:

Sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans for months in the period n,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.

All Realized Losses in excess of Principal Balance are treated as Interest Realized Losses.

Page 26 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Realized Loss Detail Report

Loan Number

Current

State &

Prior

Realized

Cumulative

Loan

Note

LTV at

Original

Principal

Loss/(Gain)

Realized

Loan Group

Status

Rate

Origination

Term

Balance

Revision

Loss/(Gain)

TOTAL

Page 27 of 30

IndyMac Residential Asset Securitization Trust 2007-A8

Mortgage Pass-Through Certificates

November 26, 2007 Distribution

Triggers and Adj. Cert. Report

TRIGGER EVENTS

Group 3

Group 2

Group 1

Total

Has Optional Termination Date Reached ?

Has Sr. Credit Supp. Depletion Date Occured ?

Has Special Haz. Cov. Term Date Occured ?

Has Fraud Loss Coverage Term Date Occured ?

Has BK Loss Cov. Term Date Occured ?

Does an Event of Default Exist?

Senior Stepdown Date has occurred?

Aggregate Group I(Group 1 & 2)

Sr.Stepdown Cond Satisfied?(1=Yes or 2=Yes)

1.Delinquency Trigger

Does Delinquency Trigger Event Exist (a > 50% of b)

(a) Rolling Six Month 60+ Delq Balance

632,476.15

(b) Aggregate Balance of Subordinate Certificates

23,073,122.63

2.Cumulative Loss Trigger

Does a Loss Trigger Event Exist (a > b)

(a) Cumulative Realized Loss

0.00

(b) Cumulative Loss Threshold (i) * (ii)

0.00

(i) Threshold Percentage

0.0000%

(ii) Cutoff Date Subordinate Principal Balance

23,152,334.00

Aggregate Group II(Group 3)

Sr.Stepdown Cond Satisfied?(1=Yes or 2=Yes)

1.Delinquency Trigger

Does Delinquency Trigger Event Exist (a > 50% of b)

(a) Rolling Six Month 60+ Delq Balance

44,666.67

(b) Aggregate Balance of Subordinate Certificates

4,910,033.91

2.Cumulative Loss Trigger

Does a Loss Trigger Event Exist (a > b)

(a) Cumulative Realized Loss

0.00

(b) Cumulative Loss Threshold (i) * (ii)

0.00

(i) Threshold Percentage

0.0000%

(ii) Cutoff Date Subordinate Principal Balance

4,997,154.00

ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK

Page 28 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution


ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
	Group 3	Group 2	Group 1	Total
Current Senior Percentage	94.948801%	93.211715%	93.490103%
Current Subordinate Percentage	5.051199%	6.788285%	6.509897%
Senior Prepayment Percentage	100.000000%	100.000000%	100.000000%
Subordinate Prepayment Percentage	0.000000%	0.000000%	0.000000%

Current LIBOR Rate				4.872500%
Libor Rate Determination Date				10/23/2007

Next LIBOR Rate				4.788750%
Next Libor Determination Date				11/21/2007



Page 29 of 30

IndyMac Residential Asset Securitization Trust 2007-A8



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
November 26, 2007 Distribution

Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
	Group 3	Group 2	Group 1	Total
Current Scheduled Payments	867,919.21	990,677.00	1,164,186.58	3,022,782.79
Current Scheduled Payments 1 Month Prior	872,398.54	1,015,831.49	1,164,286.87	3,052,516.90
Current Scheduled Payments 2 Month Prior	874,881.99	1,035,400.80	1,169,812.56	3,080,095.34
Current Scheduled Payments 3 Month Prior	874,882.19	1,044,537.68	1,170,133.63	3,089,553.49
Current Scheduled Payments 4 Month Prior	875,316.53	1,044,707.26	1,171,467.59	3,091,491.38
Current Scheduled Payments 5 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 6 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 7 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 8 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 9 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 10 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 11 Month Prior	0.00	0.00	0.00	0.00



Delinquent 60+ Scheduled Payments	1,619.17	15,997.31	5,928.78	23,545.26
Delinq. 60+ Sched. Pmnts, 1 Month Prior	0.00	14,135.38	2,607.75	16,743.14
Delinq. 60+ Sched. Pmnts, 2 Month Prior	0.00	6,565.44	1,741.27	8,306.71
Delinq. 60+ Sched. Pmnts, 3 Month Prior	0.00	0.00	1,741.27	1,741.27
Delinq. 60+ Sched. Pmnts, 4 Month Prior	0.00	0.00	0.00	0.00
Delinq. 60+ Sched. Pmnts, 5 Month Prior	0.00	0.00	0.00	0.00
Delinq. 60+ Sched. Pmnts, 6 Month Prior	0.00	0.00	0.00	0.00
Delinq. 60+ Sched. Pmnts, 7 Month Prior	0.00	0.00	0.00	0.00
Delinq. 60+ Sched. Pmnts, 8 Month Prior	0.00	0.00	0.00	0.00
Delinq. 60+ Sched. Pmnts, 9 Month Prior	0.00	0.00	0.00	0.00
Delinq. 60+ Sched. Pmnts, 10 Month Prior	0.00	0.00	0.00	0.00
Delinq. 60+ Sched. Pmnts, 11 Month Prior	0.00	0.00	0.00	0.00





Page 30 of 30

Residential Asset Securitization Trust 2007-A8 10-D