IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

November 26, 2007 Distribution

External Parties

Table of Contents

Page

Seller

1. Certificate Payment Report

IndyMac Bank, F.S.B.

2. Collection Account Report

3. Credit Enhancement Report

Servicer(s)

4. Collateral Report

IndyMac Bank, F.S.B.

5. Delinquency Report

6. REO Report

Underwriter(s)

7. Foreclosure Report

Credit Suisse Securities (USA) LLC

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:

August 01, 2007

Marion Hogan

Close Date:

August 30, 2007

Administrator

First Distribution Date:

September 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

Main Phone Number:

(714) 247-6000

Determination Date:

November 15, 2007

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

Page 1 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution

Certificate Payment Report
Current Period Distribution - REMIC III
			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	SR	80,910,000.00	80,536,168.78	402,680.84	591,053.71	993,734.55	0.00	0.00	79,945,115.07
1-A-1	SR	80,910,000.00	80,536,168.78	402,680.84	591,053.71	993,734.55	0.00	0.00	79,945,115.07
1-A-2	SR	4,246,900.00	4,227,277.90	21,136.39	31,023.93	52,160.32	0.00	0.00	4,196,253.97
2-A-1	SR	146,670,000.00	144,905,215.82	784,903.25	1,243,596.63	2,028,499.88	0.00	0.00	143,661,619.19
2-A-2	SR	10,344,000.00	10,219,537.42	55,355.83	87,705.49	143,061.32	0.00	0.00	10,131,831.93
3-A-1	SR	233,925,000.00	230,505,519.05	1,344,615.53	2,083,739.95	3,428,355.48	0.00	0.00	228,421,779.10
3-A-2	SR	16,492,000.00	16,250,922.40	94,797.05	146,906.23	241,703.28	0.00	0.00	16,104,016.17
PO	SR	1,078,702.00	1,064,874.73	0.00	816.84	816.84	0.00	0.00	1,064,057.89
A-X	SR/NTL	0.00	0.00	113,513.97	0.00	113,513.97	0.00	0.00	0.00
A-R	SR/RES	100.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
B-1	SUB	27,352,000.00	27,327,924.36	151,814.32	11,481.42	163,295.74	0.00	0.00	27,316,442.94
B-2	SUB	6,837,000.00	6,830,981.97	37,948.03	2,869.93	40,817.96	0.00	0.00	6,828,112.04
B-3	SUB	3,282,000.00	3,279,111.13	18,216.39	1,377.67	19,594.06	0.00	0.00	3,277,733.46
B-4	NOF/SUB	5,197,000.00	5,192,425.52	28,845.39	2,181.52	31,026.91	0.00	0.00	5,190,244.00
B-5	NOF/SUB	4,923,000.00	4,918,666.71	27,324.58	2,066.50	29,391.08	0.00	0.00	4,916,600.21
B-6	NOF/SUB	5,743,659.00	5,738,603.35	31,879.56	2,410.99	34,290.55	0.00	0.00	5,736,192.36
L	NOF	0.00	0.00	8,734.43	0.00	8,734.43	0.00	0.00	0.00
P	NOF	100.00	100.00	7,413.26	0.00	7,413.26	0.00	0.00	100.00

Total		547,001,461.00	540,997,329.14	3,129,178.82	4,207,230.81	7,336,409.63	0.00	0.00	536,790,098.33
Total




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	45671BAA6	80,910,000.00	995.379666	4.976898	7.305076	12.281974	988.074590
1-A-1	10/01/07	10/30/07	F-30/360	45671BAA6	80,910,000.00	995.379666	4.976898	7.305076	12.281974	988.074590
1-A-2	10/01/07	10/30/07	F-30/360	45671BAB4	4,246,900.00	995.379665	4.976898	7.305077	12.281975	988.074589
2-A-1	10/01/07	10/30/07	F-30/360	45671BAC2	146,670,000.00	987.967654	5.351491	8.478875	13.830367	979.488779
2-A-2	10/01/07	10/30/07	F-30/360	45671BAD0	10,344,000.00	987.967655	5.351492	8.478876	13.830367	979.488779
3-A-1	10/01/07	10/30/07	F-30/360	45671BAE8	233,925,000.00	985.382148	5.748063	8.907727	14.655789	976.474422
3-A-2	10/01/07	10/30/07	F-30/360	45671BAF5	16,492,000.00	985.382149	5.748063	8.907727	14.655789	976.474422
PO		45671BAG3	1,078,702.00	987.181566	0.000000	0.757243	0.757243	986.424323
A-X	10/01/07	10/30/07	A-30/360	45671BAH1	202,521,197.00	988.047603	0.560504	0.000000	0.560504	984.540964
A-R	10/01/07	10/30/07	F-30/360	45671BAJ7	100.00	0.000000	0.000000	0.000000	0.000000	0.000000
B-1	10/01/07	10/30/07	A-30/360	45671BAK4	27,352,000.00	999.119785	5.550392	0.419765	5.970157	998.700020
B-2	10/01/07	10/30/07	A-30/360	45671BAL2	6,837,000.00	999.119785	5.550392	0.419765	5.970157	998.700020
B-3	10/01/07	10/30/07	A-30/360	45671BAM0	3,282,000.00	999.119784	5.550393	0.419765	5.970158	998.700018
B-4	10/01/07	10/30/07	A-30/360	45671BAN8	5,197,000.00	999.119784	5.550393	0.419765	5.970158	998.700019
B-5	10/01/07	10/30/07	A-30/360	45671BAP3	4,923,000.00	999.119787	5.550392	0.419764	5.970156	998.700022
B-6	10/01/07	10/30/07	A-30/360	45671BAQ1	5,743,659.00	999.119786	5.550392	0.419766	5.970158	998.700020
L		45671BAS7	0.00	0.000000	0.000000	0.000000	0.000000	0.000000
P		45671BAR9	100.00	1,000.000000	74,132.600000	0.000000	74,132.600000	1,000.000000



Page 2 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


Distribution to Date - REMIC III
									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	80,910,000.00	1,211,500.65	818,363.72	146,521.21	964,884.93	2,176,385.58	0.00	0.00	79,945,115.07
1-A-2	4,246,900.00	63,590.68	42,955.25	7,690.78	50,646.03	114,236.71	0.00	0.00	4,196,253.97
2-A-1	146,670,000.00	2,365,856.57	2,820,106.19	188,274.62	3,008,380.81	5,374,237.38	0.00	0.00	143,661,619.19
2-A-2	10,344,000.00	166,853.62	198,889.88	13,278.19	212,168.07	379,021.69	0.00	0.00	10,131,831.93
3-A-1	233,925,000.00	4,061,943.12	5,241,277.77	523,886.26	5,503,220.90	9,565,164.02	0.00	0.00	228,421,779.10
3-A-2	16,492,000.00	286,371.98	369,516.52	0.00	387,983.83	674,355.81	0.00	0.00	16,104,016.17
PO	1,078,702.00	0.00	29,288.23	0.00	14,644.11	14,644.11	0.00	0.00	1,064,057.89
A-X	0.00	342,510.24	0.00	0.00	0.00	342,510.24	0.00	0.00	0.00
A-R	100.00	0.50	0.00	100.00	100.00	100.50	0.00	0.00	0.00
B-1	27,352,000.00	455,638.55	15,646.98	19,910.08	35,557.06	491,195.61	0.00	0.00	27,316,442.94
B-2	6,837,000.00	113,892.91	3,911.17	4,976.79	8,887.96	122,780.87	0.00	0.00	6,828,112.04
B-3	3,282,000.00	54,672.67	1,877.50	2,389.04	4,266.54	58,939.21	0.00	0.00	3,277,733.46
B-4	5,197,000.00	86,573.33	2,973.00	3,783.00	6,756.00	93,329.33	0.00	0.00	5,190,244.00
B-5	4,923,000.00	82,008.94	2,816.25	3,583.54	6,399.79	88,408.73	0.00	0.00	4,916,600.21
B-6	5,743,659.00	95,679.74	3,285.72	4,180.92	7,466.64	103,146.38	0.00	0.00	5,736,192.36
L	0.00	14,274.50	0.00	0.00	0.00	14,274.50	0.00	0.00	0.00
P	100.00	19,020.55	0.00	0.00	0.00	19,020.55	0.00	0.00	100.00


Total	547,001,461.00	9,420,388.55	9,550,908.18	918,574.43	10,211,362.67	19,631,751.22	0.00	0.00	536,790,098.33


Interest Detail - REMIC III
	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%	80,536,168.78	402,680.84	0.00	0.00	0.00	402,680.84	402,680.84	0.00
1-A-2	6.00000%	4,227,277.90	21,136.39	0.00	0.00	0.00	21,136.39	21,136.39	0.00
2-A-1	6.50000%	144,905,215.82	784,903.25	0.00	0.00	0.00	784,903.25	784,903.25	0.00
2-A-2	6.50000%	10,219,537.42	55,355.83	0.00	0.00	0.00	55,355.83	55,355.83	0.00
3-A-1	7.00000%	230,505,519.05	1,344,615.53	0.00	0.00	0.00	1,344,615.53	1,344,615.53	0.00
3-A-2	7.00000%	16,250,922.40	94,797.05	0.00	0.00	0.00	94,797.05	94,797.05	0.00
PO	0.00000%	1,064,874.73	0.00	0.00	0.00	0.00	0.00	0.00	0.00
A-X	0.68074%	200,100,583.18	113,513.97	0.00	0.00	0.00	113,513.97	113,513.97	0.00
A-R	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
B-1	6.66634%	27,327,924.36	151,814.32	0.00	0.00	0.00	151,814.32	151,814.32	0.00
B-2	6.66634%	6,830,981.97	37,948.03	0.00	0.00	0.00	37,948.03	37,948.03	0.00
B-3	6.66634%	3,279,111.13	18,216.39	0.00	0.00	0.00	18,216.39	18,216.39	0.00
B-4	6.66634%	5,192,425.52	28,845.39	0.00	0.00	0.00	28,845.39	28,845.39	0.00
B-5	6.66634%	4,918,666.71	27,324.58	0.00	0.00	0.00	27,324.58	27,324.58	0.00
B-6	6.66634%	5,738,603.35	31,879.56	0.00	0.00	0.00	31,879.56	31,879.56	0.00
L	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	8,734.43	0.00
P	0.00000%	100.00	0.00	0.00	0.00	0.00	0.00	7,413.26	0.00

Total		741,097,912.32	3,113,031.13	0.00	0.00	0.00	3,113,031.13	3,129,178.82	0.00



Page 3 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution

Collection Account Report
SUMMARY

	Group 3	Group 2	Group 1	Total
Principal Collections	2,240,407.35	1,338,365.46	628,458.00	4,207,230.81
Principal Withdrawals	0.00	0.00	0.00	0.00
Principal Other Accounts	0.00	0.00	0.00	0.00
TOTAL NET PRINCIPAL	2,240,407.35	1,338,365.46	628,458.00	4,207,230.81
Interest Collections	1,757,458.52	961,613.57	497,487.17	3,216,559.26
Interest Withdrawals	-0.00	-0.00	-0.00	-0.00
Interest Other Accounts	5,598.41	2,469.09	8,080.20	16,147.69
Interest Fees	-54,513.84	-31,602.72	-17,411.57	-103,528.14
TOTAL NET INTEREST	1,708,543.09	932,479.94	497,487.17	3,129,178.81
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION	3,948,950.44	2,270,845.40	1,116,613.80	7,336,409.62




PRINCIPAL - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Principal Received	98,860.41	71,710.29	57,005.09	227,575.79
Curtailments	13,401.30	202,529.01	571,452.91	787,383.22
Prepayments In Full	2,128,145.63	1,064,126.16	0.00	3,192,271.79
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	-27,321.52	-12,322.28	-9,444.98	-49,088.78
Realized Losses	-0.00	-0.00	-0.00	-0.00
Advanced Principal	27,321.52	12,322.28	9,444.98	49,088.78
TOTAL PRINCIPAL COLLECTED	2,240,407.35	1,338,365.46	628,458.00	4,207,230.81




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 4 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


INTEREST - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Interest	1,773,880.58	967,636.36	500,853.67	3,242,370.61
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	-3,615.28	-0.00	-0.00	-3,615.28
Delinquent Interest	-535,489.00	-167,272.88	-86,834.35	-789,596.23
Compensating Interest	0.00	0.00	0.00	3,615.28
Civil Relief Act Shortfalls	-0.00	-0.00	-0.00	-0.00
Interest Advanced	519,066.94	161,250.09	83,467.85	763,784.88
Interest Realized Loss	0.00	0.00	0.00	0.00
TOTAL INTEREST COLLECTED	1,757,458.52	961,613.57	497,487.17	3,216,559.26




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 Collected. *
Prepayment Charges Waived. *
Prepayment Charges paid by the servicer	442.75	42.38	6,928.14	7,413.26

Late Payment Fee Collected *
Late Payment Fee Waived	278.35	134.90	0.00	413.25
Late Payment Fee paid by the Servicer	5,155.66	2,426.71	1,152.06	8,734.43
TOTAL INTEREST OTHER ACCOUNTS	5,598.41	2,469.09	8,080.20	16,147.69





* Information not available with Trustee






Page 5 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


INTEREST FEES
INTEREST FEES
	Group 3	Group 2	Group 1	Total
Current Servicing Fees	39,134.41	28,893.84	15,937.75	83,966.00
Trustee Fees	1,483.03	932.07	515.31	2,930.40
PMI	13,896.40	1,776.81	958.52	16,631.73
TOTAL INTEREST FEES	54,513.84	31,602.72	17,411.57	103,528.14



Page 6 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

November 26, 2007 Distribution

Credit Enhancement Report

ACCOUNTS

Distribution Account

Beginning Balance

0.00

Amount Deposited

6,572,624.74

Amount Withdrawn

6,572,624.74

Ending Balance

0.00

INSURANCE

SPACE INTENTIONALLY LEFT BLANK

STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK

Page 7 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution

Collateral Report


COLLATERAL



		Group 3	Group 2	Group 1	Total



Loan Count:
Loan Count:


Original	1,223	497	287	2,007
Prior	1,374	786	449	2,609
Prefunding	0	0	0	0
Scheduled Paid Offs	-0	-0	-0	-0
Full Voluntary Prepayments	-7	-3	-0	-10
Repurchases	-0	-0	-0	-0
Liquidations	-0	-0	-0	-0
Current	1,367	783	449	2,599
Principal Balance:


Original	277,470,888.36	173,977,834.53	95,552,639.90	547,001,362.79
Prior	273,789,580.36	172,073,729.10	95,133,921.46	540,997,230.91
Prefunding	0.00	0.00	0.00	0.00
Scheduled Principal	-98,860.41	-71,710.29	-57,005.09	-227,575.79
Partial Prepayments	-13,401.30	-202,529.01	-571,452.91	-787,383.22
Full Voluntary Prepayments	-2,128,145.63	-1,064,126.16	-0.00	-3,192,271.79
Repurchases	-0.00	-0.00	-0.00	-0.00
Liquidations	-0.00	-0.00	-0.00	-0.00
Current	271,549,173.01	170,735,363.63	94,505,463.45	536,790,000.09

Aggregate number and outstanding Stated Principal
of Mortgage Loans repurchased during the related
Due Period due to material breaches of
representations and warranties regarding
such Mortgage Loans.*

* Information not available with Trustee





PREFUNDING

SPACE INTENTIONALLY LEFT BLANK






Page 8 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

November 26, 2007 Distribution



CHARACTERISTICS
CHARACTERISTICS

	Group 3	Group 2	Group 1	Total
Weighted Average Coupon Original	7.83125%	6.75787%	6.25293%	7.27926%
Weighted Average Coupon Prior	7.83213%	6.75777%	6.25296%	7.27902%
Weighted Average Coupon Current	7.83226%	6.75761%	6.25400%	7.27851%
Weighted Average Months to Maturity Original	351	352	353	352
Weighted Average Months to Maturity Prior	350	351	352	351
Weighted Average Months to Maturity Current	352	353	352	352
Weighted Avg Remaining Amortization Term Original	363	361	365	363
Weighted Avg Remaining Amortization Term Prior	362	360	364	362
Weighted Avg Remaining Amortization Term Current	364	362	364	363
Weighted Average Seasoning Original	5.26	4.08	4.81	4.85
Weighted Average Seasoning Prior	6.25	5.07	5.79	5.84
Weighted Average Seasoning Current	7.25	6.08	6.79	6.85

Page 9 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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%





Page 10 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

	Group 3	Group 2	Group 1	Total




Current Servicing Fees	39,134.41	28,893.84	15,937.75	83,966.00
Delinquent Servicing Fees	16,422.06	6,022.78	3,366.51	25,811.35
TOTAL SERVICING FEES	55,556.47	34,916.63	19,304.26	109,777.36


Total Servicing Fees	55,556.47	34,916.63	19,304.26	109,777.36
Compensating Interest	-0.00	-0.00	-0.00	-3,615.28
Delinquent Servicing Fees	-16,422.06	-6,022.78	-3,366.51	-25,811.35
COLLECTED SERVICING FEES	35,519.13	28,893.84	15,937.75	80,350.72


Total Advanced Interest	519,066.94	161,250.09	83,467.85	763,784.88
Total Advanced Principal	27,321.52	12,322.28	9,444.98	49,088.78
Aggregate Advances with respect to this Distribution	27,321.52	12,322.28	9,444.98	49,088.77
	0.00	0.00	0.00	0.00

Any additional servicing compensation received by the
Servicer attributable to penalties, fees, Excess Proceeds
or other similar charges or fees and items. *


The aggregate amount of Advances reimbursed
during the related Due Period. *
The general source of funds for such reimbursements. *
The aggregate amount of Advances outstanding as
of the close of business on the Distribution Date. *


The aggregate amount of Servicing Advances
reimbursed during the related Due Period. *
The general source of funds for such reimbursements. *
The aggregate amount of Servicing Advances outstanding
as of the close of business on the Distribution Date. *



* Information not available with Trustee




ADDITIONAL COLLATERAL INFORMATION
ADDITIONAL COLLATERAL INFORMATION
	Group 3	Group 2	Group 1	Total
Prepayment Interest Shortfall (PPIS)	3,615.28	0.00	0.00	3,615.28
Compensating Interest	0.00	0.00	0.00	(3,615.28)
Net Prepayment Interest Shortfall (PPIS)	0.00	0.00	0.00	0.00

Weighted Average Net Mortgage Rate	7.463884%	6.485668%	6.055576%	6.905095%






Page 11 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution

Delinquency Report

TOTAL
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		24,308,236.26	9,246,624.99	3,502,241.72	37,057,102.97
	% Balance		4.53%	1.72%	0.65%	6.90%
	# Loans		98.0	39.0	15.0	152.0
	% # Loans		4.94%	1.97%	0.76%	7.67%
FORECLOSURE	Balance	0.00	0.00	0.00	384,000.00	384,000.00
	% Balance	0.00%	0.00%	0.00%	0.07%	0.07%
	# Loans	0.0	0.0	0.0	1.0	1.0
	% # Loans	0.00%	0.00%	0.00%	0.05%	0.05%
BANKRUPTCY	Balance	260,000.00	0.00	0.00	0.00	260,000.00
	% Balance	0.05%	0.00%	0.00%	0.00%	0.05%
	# Loans	1.0	0.0	0.0	0.0	1.0
	% # Loans	0.05%	0.00%	0.00%	0.00%	0.05%
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	0.0	0.0	0.0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	260,000.00	24,308,236.26	9,246,624.99	3,886,241.72	37,701,102.97
	% Balance	0.05%	4.53%	1.72%	0.72%	7.02%
	# Loans	1.0	98.0	39.0	16.0	154.0
	% # Loans	0.05%	4.94%	1.97%	0.81%	7.77%

Page 12 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


GROUP 1
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		1,655,717.18	262,010.79	0.00	1,917,727.97
	% Balance		1.75%	0.28%	0.00%	2.03%
	# Loans		4.7	0.9	0.0	5.6
	% # Loans		1.64%	0.33%	0.00%	1.97%
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	0.0	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	0.0	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	0.0	0.0	0.0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	0.00	1,655,717.18	262,010.79	0.00	1,917,727.97
	% Balance	0.00%	1.75%	0.28%	0.00%	2.03%
	# Loans	0.0	4.7	0.9	0.0	5.6
	% # Loans	0.00%	1.64%	0.33%	0.00%	1.97%

Page 13 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


GROUP 2
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		5,555,558.81	518,814.14	118,957.75	6,193,330.69
	% Balance		3.25%	0.30%	0.07%	3.63%
	# Loans		15.6	2.3	0.7	18.5
	% # Loans		3.17%	0.47%	0.13%	3.77%
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	0.0	0.0	0.0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY	Balance	65,000.00	0.00	0.00	0.00	65,000.00
	% Balance	0.04%	0.00%	0.00%	0.00%	0.04%
	# Loans	0.3	0.0	0.0	0.0	0.3
	% # Loans	0.05%	0.00%	0.00%	0.00%	0.05%
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	0.0	0.0	0.0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	65,000.00	5,555,558.81	518,814.14	118,957.75	6,258,330.69
	% Balance	0.04%	3.25%	0.30%	0.07%	3.67%
	# Loans	0.3	15.6	2.3	0.7	18.8
	% # Loans	0.05%	3.17%	0.47%	0.13%	3.82%

Page 14 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


GROUP 3
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		17,096,960.27	8,465,800.06	3,383,283.97	28,946,044.31
	% Balance		6.30%	3.12%	1.25%	10.66%
	# Loans		77.7	35.7	14.3	127.8
	% # Loans		6.45%	2.97%	1.19%	10.60%
FORECLOSURE	Balance	0.00	0.00	0.00	384,000.00	384,000.00
	% Balance	0.00%	0.00%	0.00%	0.14%	0.14%
	# Loans	0.0	0.0	0.0	1.0	1.0
	% # Loans	0.00%	0.00%	0.00%	0.08%	0.08%
BANKRUPTCY	Balance	195,000.00	0.00	0.00	0.00	195,000.00
	% Balance	0.07%	0.00%	0.00%	0.00%	0.07%
	# Loans	0.7	0.0	0.0	0.0	0.7
	% # Loans	0.06%	0.00%	0.00%	0.00%	0.06%
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	0.0	0.0	0.0
	% # Loans	0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL	Balance	195,000.00	17,096,960.27	8,465,800.06	3,767,283.97	29,525,044.31
	% Balance	0.07%	6.30%	3.12%	1.39%	10.87%
	# Loans	0.7	77.7	35.7	15.3	129.6
	% # Loans	0.06%	6.45%	2.97%	1.27%	10.75%

Page 15 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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 IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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

Became Foreclosure Property this Period:

6100335 3

384,000.00

01-Jun-2007

7.750%

CA - 80.00%

360

01-Jan-2007

TOTAL

384,000.00

Page 17 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution

Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

		Group 3	Group 2	Group 1	Total


Current


Number of Paid in Full Loans	7	3	0	10
Number of Repurchased Loans	0	0	0	0
Total Number of Loans Prepaid in Full	7	3	0	10
Curtailments Amount	13,401.30	202,529.01	571,452.91	787,383.22
Paid in Full Balance	2,128,145.63	1,064,126.16	0.00	3,192,271.79
Repurchased Loans Balance	0.00	0.00	0.00	0.00
Total Prepayment Amount	2,141,546.93	1,266,655.17	571,452.91	3,979,655.01
Cumulative


Number of Paid in Full Loans	19	7	1	27
Number of Repurchased Loans	0	0	0	0
Total Number of Loans Prepaid in Full	19	7	1	27
Paid in Full Balance	5,556,891.79	2,806,728.21	288,656.81	8,652,276.81
Repurchased Loans Balance	0.00	0.00	0.00	0.00
Curtailments Amount	53,897.81	212,267.86	585,030.32	851,195.99
Total Prepayment Amount	5,610,789.60	3,018,996.07	873,687.13	9,503,472.80

Page 18 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


VOLUNTARY PREPAYMENTS RATES - Including Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.78%	0.74%	0.60%	0.74%
3 Months Avg SMM	0.68%	0.58%	0.31%	0.58%
12 Months Avg SMM	0.68%	0.58%	0.31%	0.58%
Avg SMM Since Cut-off	0.68%	0.58%	0.31%	0.58%



CPR	9.00%	8.49%	6.98%	8.48%
3 Months Avg CPR	7.85%	6.77%	3.61%	6.78%
12 Months Avg CPR	7.85%	6.77%	3.61%	6.78%
Avg CPR Since Cut-off	7.85%	6.77%	3.61%	6.78%



PSA	620.11%	697.86%	514.02%	619.45%
3 Months Avg PSA Approximation	627.61%	666.57%	311.76%	579.39%
12 Months Avg PSA Approximation	627.61%	666.57%	311.76%	579.39%
Avg PSA Since Cut-off Approximation	627.62%	666.57%	311.76%	579.39%


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

Page 19 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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 IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


VOLUNTARY PREPAYMENTS RATES - Excluding Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.78%	0.74%	0.60%	0.74%
3 Months Avg SMM	0.68%	0.58%	0.31%	0.58%
12 Months Avg SMM	0.68%	0.58%	0.31%	0.58%
Avg SMM Since Cut-off	0.68%	0.58%	0.31%	0.58%



CPR	9.00%	8.49%	6.98%	8.48%
3 Months Avg CPR	7.85%	6.77%	3.61%	6.78%
12 Months Avg CPR	7.85%	6.77%	3.61%	6.78%
Avg CPR Since Cut-off	7.85%	6.77%	3.61%	6.78%



PSA	620.11%	697.86%	514.02%	619.45%
3 Months Avg PSA Approximation	627.61%	666.57%	311.76%	579.39%
12 Months Avg PSA Approximation	627.61%	666.57%	311.76%	579.39%
Avg PSA Since Cut-off Approximation	627.62%	666.57%	311.76%	579.39%

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

Page 21 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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 IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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

6046787 3

180,000.00

178,265.08

26-Oct-2007

8.500%

FL - 80.00%

Paid Off - 360

01-Aug-2006

6090030 3

119,000.00

118,328.98

31-Oct-2007

7.875%

WI - 85.00%

Paid Off - 360

01-Mar-2007

6129428 3

417,000.00

415,018.45

23-Oct-2007

7.250%

CA - 62.71%

Paid Off - 360

01-May-2007

6133250 2

650,000.00

649,999.70

13-Nov-2007

6.750%

HI - 77.38%

Paid Off - 360

01-Jul-2007

6134132 2

292,500.00

291,257.14

05-Nov-2007

6.875%

IL - 75.00%

Paid Off - 360

01-Jun-2007

6134573 3

950,000.00

947,008.68

16-Oct-2007

7.250%

NJ - 47.50%

Paid Off - 360

01-Jul-2007

6137316 2

261,000.00

260,911.47

05-Nov-2007

6.875%

AZ - 85.57%

Paid Off - 360

01-Aug-2007

6143460 3

332,000.00

331,482.29

08-Nov-2007

7.750%

CO - 80.00%

Paid Off - 360

01-Jun-2007

96134132 3

292,500.00

291,257.14

05-Nov-2007

6.875%

IL - 75.00%

Paid Off - 360

01-Jun-2007

96137316 3

261,000.00

260,911.47

05-Nov-2007

6.875%

AZ - 85.57%

Paid Off - 360

01-Aug-2007

TOTAL

3,755,000.00

3,744,440.40

Page 23 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
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					5,470,013.00
	Fraud Loss Coverage Amt					5,470,013.00
	Bankrupt Loss Coverage Amt					205,420.00

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

Page 24 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
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 IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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.

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IndyMac IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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 IMSC Mortgage Loan Trust 2007-F3

Mortgage Backed Floating Rate Notes

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?

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

4,469,021.42

(b) Aggregate Balance of Subordinate Certificates

53,265,325.01

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

53,334,659.00

ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK

Page 28 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution


ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
	Group 3	Group 2	Group 1	Total
Current Senior Percentage	90.126308%	90.150166%	90.107693%	0.000000%
Current Subordinate Percentage	9.873692%	9.849834%	9.892307%	0.000000%
Senior Prepayment Percentage	100.000000%	100.000000%	100.000000%	0.000000%
Subordinate Prepayment Percentage	0.000000%	0.000000%	0.000000%	0.000000%

Subordinate Pass Through Rate				6.666338%

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

Next LIBOR Rate				0.000000%
Next Libor Determination Date				11/21/2007

Items with respect to the Distribution Date,and,with
respect to Lender PMI Loans, the interest premium charged
the related borrower for mortgage guaranty insurance*

* Information not available with Trustee


Page 29 of 30

IndyMac IMSC Mortgage Loan Trust 2007-F3



Mortgage Backed Floating Rate Notes
Mortgage Backed Floating Rate Notes
November 26, 2007 Distribution

Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
	Group 3	Group 2	Group 1	Total
Current Scheduled Payments	1,872,740.99	1,039,346.65	557,858.75	3,469,946.40
Current Scheduled Payments 1 Month Prior	1,883,118.00	1,040,930.56	559,307.95	3,483,356.52
Current Scheduled Payments 2 Month Prior	1,910,132.73	1,058,710.36	562,786.77	3,531,629.86
Current Scheduled Payments 3 Month Prior	0.00	0.00	0.00	0.00
Current Scheduled Payments 4 Month Prior	0.00	0.00	0.00	0.00
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	89,046.98	4,236.96	1,412.10	94,696.03
Delinq. 60+ Sched. Pmnts, 1 Month Prior	38,211.38	3,400.97	178.85	41,791.20
Delinq. 60+ Sched. Pmnts, 2 Month Prior	4,895.00	0.00	0.00	4,895.00
Delinq. 60+ Sched. Pmnts, 3 Month Prior	0.00	0.00	0.00	0.00
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





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IndyMac IMSC Mortgage Loan Trust 2007-F3 10-D