IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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, F.S.B.

5. Delinquency Report

6. REO Report

Underwriter(s)

7. Foreclosure Report

Credit Suisse Securities 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:

April 01, 2007

Jennifer Hermansader

Close Date:

April 27, 2007

Administrator

First Distribution Date:

May 25, 2007

(714) 247-6258

Jennifer.Vandyne@db.com

Address:

Distribution Date:

December 26, 2007

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

Record Date:

November 30, 2007

Factor Information:

(800) 735-7777

Main Phone Number:

(714) 247-6000

Determination Date:

December 18, 2007

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

Page 1 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
December 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	114,435,000.00	105,487,956.06	483,520.42	1,467,348.21	1,950,868.63	0.00	0.00	104,020,607.85
1-A-1	INT	114,435,000.00	105,487,956.06	483,520.42	1,467,348.21	1,950,868.63	0.00	0.00	104,020,607.85
1-X	NTL	0.00	0.00	26,371.99	0.00	26,371.99	0.00	0.00	0.00
2-A-1	INT	80,390,000.00	76,073,747.71	385,261.76	9,136.09	394,397.85	0.00	0.00	76,064,611.62
2-X	NTL	0.00	0.00	19,018.44	0.00	19,018.44	0.00	0.00	0.00
C-M	CMB	21,645,000.00	20,171,419.75	101,558.75	164,053.56	265,612.31	0.00	0.00	20,007,366.19
3-A-1	INT	155,010,000.00	150,405,633.37	750,353.49	1,204,691.60	1,955,045.09	0.00	0.00	149,200,941.77
3-A-2	INT	22,145,000.00	21,487,212.12	107,196.81	172,104.35	279,301.16	0.00	0.00	21,315,107.77
3-X	NTL	0.00	0.00	27,000.51	0.00	27,000.51	0.00	0.00	0.00
A-R	RES_EXE	100.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
B-1	INT	9,235,000.00	9,229,240.29	46,914.35	426.49	47,340.84	0.00	0.00	9,228,813.80
B-2	INT	6,090,000.00	6,086,201.77	30,937.56	281.25	31,218.81	0.00	0.00	6,085,920.52
B-3	INT	3,780,000.00	3,777,642.48	19,202.62	174.57	19,377.19	0.00	0.00	3,777,467.91
B-4	INT	3,780,000.00	3,777,642.48	19,202.62	174.57	19,377.19	0.00	0.00	3,777,467.91
B-5	INT	1,885,000.00	1,883,824.36	9,575.91	87.05	9,662.96	0.00	0.00	1,883,737.31
B-6	INT	1,468,753.31	1,467,837.26	7,461.35	67.83	7,529.18	0.00	0.00	1,467,769.43
P-1	INT	100.00	100.00	39,450.40	0.00	39,450.40	0.00	0.00	100.00
P-2	INT	100.00	100.00	60.67	0.00	60.67	0.00	0.00	100.00
L	INT	0.00	0.00	3,755.61	0.00	3,755.61	0.00	0.00	0.00

Total		419,864,053.31	399,848,557.65	2,076,843.26	3,018,545.57	5,095,388.83	0.00	0.00	396,830,012.08
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	11/01/07	11/30/07	F-30/360	45669YAA0	114,435,000.00	921.815494	4.225284	12.822547	17.047832	908.992947
1-A-1	11/01/07	11/30/07	F-30/360	45669YAA0	114,435,000.00	921.815494	4.225284	12.822547	17.047832	908.992947
1-X	11/01/07	11/30/07	A-30/360	45669YAQ5	114,435,000.00	921.815494	0.230454	0.000000	0.230454	908.992947
2-A-1	11/01/07	11/30/07	F-30/360	45669YAC6	80,390,000.00	946.308592	4.792409	0.113647	4.906056	946.194945
2-X	11/01/07	11/30/07	A-30/360	45669YAE2	80,390,000.00	946.308592	0.236577	0.000000	0.236577	946.194945
C-M	11/01/07	11/30/07	F-30/360	45669YAR3	21,645,000.00	931.920524	4.692019	7.579282	12.271301	924.341242
3-A-1	11/01/07	11/30/07	F-30/360	45669YAS1	155,010,000.00	970.296325	4.840678	7.771702	12.612380	962.524623
3-A-2	11/01/07	11/30/07	F-30/360	45669YAT9	22,145,000.00	970.296325	4.840678	7.771702	12.612380	962.524623
3-X	11/01/07	11/30/07	A-30/360	45669YAU6	177,155,000.00	970.296325	0.152412	0.000000	0.152412	962.524623
A-R	11/01/07	11/30/07	F-30/360	45669YAF9	100.00	0.000000	0.000000	0.000000	0.000000	0.000000
B-1	11/01/07	11/30/07	F-30/360	45669YAG7	9,235,000.00	999.376317	5.080060	0.046182	5.126241	999.330135
B-2	11/01/07	11/30/07	F-30/360	45669YAH5	6,090,000.00	999.376317	5.080059	0.046182	5.126241	999.330135
B-3	11/01/07	11/30/07	F-30/360	45669YAJ1	3,780,000.00	999.376317	5.080058	0.046183	5.126241	999.330135
B-4	11/01/07	11/30/07	F-30/360	45669YAK8	3,780,000.00	999.376317	5.080058	0.046183	5.126241	999.330135
B-5	11/01/07	11/30/07	F-30/360	45669YAL6	1,885,000.00	999.376318	5.080058	0.046180	5.126239	999.330138
B-6	11/01/07	11/30/07	F-30/360	45669YAM4	1,468,753.31	999.376308	5.080057	0.046182	5.126239	999.330126
P-1		45669YAN2	100.00	1,000.000000	394,504.000000	0.000000	394,504.000000	1,000.000000
P-2		45669YAP7	100.00	1,000.000000	606.700000	0.000000	606.700000	1,000.000000
L		45669YAV4	0.00	0.000000	0.000000	0.000000	0.000000	0.000000



Page 2 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
December 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	114,435,000.00	4,002,930.29	10,395,886.93	18,505.22	10,414,392.15	14,417,322.44	0.00	0.00	104,020,607.85
1-X	0.00	217,943.23	0.00	0.00	0.00	217,943.23	0.00	0.00	0.00
2-A-1	80,390,000.00	3,162,626.57	4,289,801.27	35,587.11	4,325,388.38	7,488,014.95	0.00	0.00	76,064,611.62
2-X	0.00	156,043.50	0.00	0.00	0.00	156,043.50	0.00	0.00	0.00
C-M	21,645,000.00	837,630.52	1,631,624.53	6,009.28	1,637,633.81	2,475,264.33	0.00	0.00	20,007,366.19
3-A-1	155,010,000.00	6,073,128.04	5,637,126.28	171,931.95	5,809,058.23	11,882,186.27	0.00	0.00	149,200,941.77
3-A-2	22,145,000.00	867,617.69	805,329.72	24,562.50	829,892.23	1,697,509.92	0.00	0.00	21,315,107.77
3-X	0.00	218,383.53	0.00	0.00	0.00	218,383.53	0.00	0.00	0.00
A-R	100.00	0.49	0.00	0.00	100.00	100.49	0.00	0.00	0.00
B-1	9,235,000.00	375,821.12	0.00	6,186.20	6,186.20	382,007.32	0.00	0.00	9,228,813.80
B-2	6,090,000.00	247,834.37	0.00	4,079.48	4,079.48	251,913.85	0.00	0.00	6,085,920.52
B-3	3,780,000.00	153,828.23	0.00	2,532.09	2,532.09	156,360.32	0.00	0.00	3,777,467.91
B-4	3,780,000.00	153,828.23	0.00	2,532.09	2,532.09	156,360.32	0.00	0.00	3,777,467.91
B-5	1,885,000.00	76,710.63	0.00	1,262.69	1,262.69	77,973.32	0.00	0.00	1,883,737.31
B-6	1,468,753.31	59,771.32	0.00	983.88	983.88	60,755.20	0.00	0.00	1,467,769.43
P-1	100.00	82,016.59	0.00	0.00	0.00	82,016.59	0.00	0.00	100.00
P-2	100.00	60.67	0.00	0.00	0.00	60.67	0.00	0.00	100.00
L	0.00	11,042.33	0.00	0.00	0.00	11,042.33	0.00	0.00	0.00


Total	419,864,053.31	16,697,217.35	22,759,768.73	274,172.49	23,034,041.23	39,731,258.58	0.00	0.00	396,830,012.08


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	5.50039%	105,487,956.06	483,520.42	0.00	0.00	0.00	483,520.42	483,520.42	0.00
1-X	0.30000%	105,487,956.06	26,371.99	0.00	0.00	0.00	26,371.99	26,371.99	0.00
2-A-1	6.09103%	76,073,747.71	386,139.78	878.03	0.00	0.00	385,261.75	385,261.76	0.00
2-X	0.30000%	76,073,747.71	19,018.44	0.00	0.00	0.00	19,018.44	19,018.44	0.00
C-M	6.04174%	20,171,419.75	101,661.09	102.34	0.00	0.00	101,558.75	101,558.75	0.00
3-A-1	5.98664%	150,405,633.37	750,353.49	0.00	0.00	0.00	750,353.49	750,353.49	0.00
3-A-2	5.98664%	21,487,212.12	107,196.81	0.00	0.00	0.00	107,196.81	107,196.81	0.00
3-X	0.18849%	171,892,845.49	27,000.50	0.00	0.00	0.00	27,000.50	27,000.51	0.00
A-R	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
B-1	6.10303%	9,229,240.29	46,938.64	24.29	0.00	0.00	46,914.35	46,914.35	0.00
B-2	6.10303%	6,086,201.77	30,953.58	16.02	0.00	0.00	30,937.56	30,937.56	0.00
B-3	6.10303%	3,777,642.48	19,212.57	9.94	0.00	0.00	19,202.63	19,202.62	0.00
B-4	6.10303%	3,777,642.48	19,212.57	9.94	0.00	0.00	19,202.63	19,202.62	0.00
B-5	6.10303%	1,883,824.36	9,580.87	4.96	0.00	0.00	9,575.91	9,575.91	0.00
B-6	6.10303%	1,467,837.26	7,465.22	3.86	0.00	0.00	7,461.36	7,461.35	0.00
P-1	0.00000%	100.00	0.00	0.00	0.00	0.00	0.00	39,450.40	0.00
P-2	0.00000%	100.00	0.00	0.00	0.00	0.00	0.00	60.67	0.00
L	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	3,755.61	0.00

Total		753,303,106.91	2,034,625.97	1,049.38	0.00	0.00	2,033,576.59	2,076,843.26	0.00



Page 3 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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


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)
C-M-1	INT	12,715,000.00	11,720,884.02	56,654.71	163,038.69	219,693.40	0.00	0.00	11,557,845.33
C-M-1	INT	12,715,000.00	11,720,884.02	56,654.71	163,038.69	219,693.40	0.00	0.00	11,557,845.33
C-M-2	INT	8,930,000.00	8,450,535.73	44,904.04	1,014.87	45,918.91	0.00	0.00	8,449,520.86






Total		21,645,000.00	20,171,419.75	101,558.75	164,053.56	265,612.31	0.00	0.00	20,007,366.19
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
	Period	Period
Class	Starting	Ending	Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance

					(1)	(1)	(2)	(3)	(4)=(2)+(3)	(5)
C-M-1	11/01/07	11/30/07	F-30/360	IN07A9001	12,715,000.00	921.815495	4.455738	12.822547	17.278285	908.992948
C-M-2	11/01/07	11/30/07	F-30/360	IN07A9002	8,930,000.00	946.308592	5.028448	0.113647	5.142095	946.194945








Page 4 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
December 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)
C-M-1	12,715,000.00	468,985.94	0.00	0.00	1,157,154.67	1,626,140.61	0.00	0.00	11,557,845.33
C-M-2	8,930,000.00	368,644.58	0.00	0.00	480,479.15	849,123.73	0.00	0.00	8,449,520.86






Total	21,645,000.00	837,630.52	1,637,633.82	2,475,264.34	0.00	0.00	20,007,366.19


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)
C-M-1	5.80039%	11,720,884.02	56,654.71	0.00	0.00	0.00	56,654.71	56,654.71	0.00
C-M-2	6.39103%	8,450,535.73	45,006.38	102.34	0.00	0.00	44,904.04	44,904.04	0.00






Total		20,171,419.75	101,661.09	102.34	0.00	0.00	101,558.75	101,558.75	0.00



Page 5 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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

Collection Account Report
SUMMARY

	Group 3	Group 2	Group 1	Total
Principal Collections	1,377,478.07	10,503.31	1,630,564.18	3,018,545.56
Principal Withdrawals	0.00	0.00	0.00	0.00
Principal Other Accounts	0.00	0.00	0.00	0.00
TOTAL NET PRINCIPAL	1,377,478.07	10,503.31	1,630,564.18	3,018,545.56
Interest Collections	975,366.82	498,611.75	632,069.87	2,106,048.44
Interest Withdrawals	-0.00	-0.00	-0.00	-0.00
Interest Other Accounts	1,155.51	2,192.26	39,918.91	43,266.68
Interest Fees	-30,107.00	-17,800.72	-24,564.13	-72,471.85
TOTAL NET INTEREST	946,415.33	483,003.29	647,424.65	2,076,843.27
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION	2,323,893.40	493,506.60	2,277,988.83	5,095,388.83




PRINCIPAL - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Principal Received	10,620.77	5,356.65	2,629.51	18,606.93
Curtailments	17,229.96	5,146.66	27,934.67	50,311.29
Prepayments In Full	1,349,627.34	0.00	1,600,000.00	2,949,627.34
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	-2,526.82	-2,059.69	-1,817.86	-6,404.37
Realized Losses	-0.00	-0.00	-0.00	-0.00
Advanced Principal	2,526.82	2,059.69	1,817.86	6,404.37
TOTAL PRINCIPAL COLLECTED	1,377,478.07	10,503.31	1,630,564.18	3,018,545.56




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 INDX Mortgage Loan Trust 2007-AR9



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


INTEREST - COLLECTIONS

	Group 3	Group 2	Group 1	Total
Scheduled Interest	984,676.70	508,931.89	640,683.52	2,134,292.11
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	-0.00	-2,611.11	-2,611.11
Delinquent Interest	-246,044.01	-178,615.84	-173,225.15	-597,885.00
Compensating Interest	0.00	0.00	2,611.11	2,611.11
Civil Relief Act Shortfalls	-0.00	-1,049.39	-0.00	-1,049.39
Interest Advanced	236,734.14	169,345.09	164,611.50	570,690.73
Interest Realized Loss	-0.00	-0.00	-0.00	-0.00
TOTAL INTEREST COLLECTED	975,366.82	498,611.75	632,069.87	2,106,048.44




INTEREST - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK




INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
	Group 3	Group 2	Group 1	Total
Hard Prepayment Charges Collected. *
Hard Prepayment Charges Waived. *
Hard Prepayment Charges paid by the servicer.	93.69	107.04	39,249.67	39,450.40

Soft Prepayment Charges Collected. *
Soft Prepayment Charges Waived. *
Soft Prepayment Charges paid by the servicer.	60.67	0.00	0.00	60.67
Late payment charges.	1,001.15	2,085.22	669.24	3,755.61
Late Payment Fee waived	36.00	0.00	0.00	36.00
TOTAL INTEREST OTHER ACCOUNTS	1,155.51	2,192.26	39,918.91	43,266.68

* Information not available with Trustee



INTEREST FEES
INTEREST FEES
	Group 3	Group 2	Group 1	Total
Current Servicing Fees	28,958.94	17,235.25	23,778.61	69,972.80
Trustee Fees	1,148.06	565.47	785.52	2,499.05
TOTAL INTEREST FEES	30,107.00	17,800.72	24,564.13	72,471.85



Page 7 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

Credit Enhancement Report

ACCOUNTS

Distribution Account

Beginning Account Balance

0.00

Amount Deposited

5,097,888.04

Amount Withdrawn

5,097,888.04

Ending Account Balance

0.00

INSURANCE

SPACE INTENTIONALLY LEFT BLANK

STRUCTURAL FEATURES

SPACE INTENTIONALLY LEFT BLANK

Page 8 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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

Collateral Report


COLLATERAL



		Group 3	Group 2	Group 1	Total



Loan Count:
Loan Count:


Original	377	245	249	871
Prior	365	234	237	836
Prefunding	0	0	0	0
Scheduled Paid Offs	-0	-0	-0	-0
Full Voluntary Prepayments	-1	-0	-1	-2
Repurchases	-0	-0	-0	-0
Liquidations	-0	-0	-0	-0
Current	364	234	236	834
Principal Balance:


Original	188,965,193.57	95,273,667.80	135,624,991.94	419,863,853.31
Prior	183,690,297.65	90,475,587.00	125,682,473.00	399,848,357.65
Prefunding	0.00	0.00	0.00	0.00
Scheduled Principal	-10,620.77	-5,356.65	-2,629.51	-18,606.93
Partial Prepayments	-17,229.96	-5,146.66	-27,934.67	-50,311.29
Full Voluntary Prepayments	-1,349,627.34	-0.00	-1,600,000.00	-2,949,627.34
Repurchases	-0.00	-0.00	-0.00	-0.00
Liquidations	-0.00	-0.00	-0.00	-0.00
Current	182,312,819.58	90,465,083.69	124,051,908.82	396,829,812.09






PREFUNDING

SPACE INTENTIONALLY LEFT BLANK






Page 9 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 26, 2007 Distribution



CHARACTERISTICS
CHARACTERISTICS

	Group 3	Group 2	Group 1	Total
Weighted Average Coupon Original	6.44599%	6.74152%	6.13864%	6.41377%
Weighted Average Coupon Prior	6.43310%	6.73778%	6.11778%	6.40305%
Weighted Average Coupon Current	6.43263%	6.75009%	6.11716%	6.40530%
Weighted Average Months to Maturity Original	358	358	358	358
Weighted Average Months to Maturity Prior	353	352	352	352
Weighted Average Months to Maturity Current	352	351	351	351
Weighted Avg Remaining Amortization Term Original	359	359	358	359
Weighted Avg Remaining Amortization Term Prior	353	353	352	353
Weighted Avg Remaining Amortization Term Current	352	352	351	352
Weighted Average Seasoning Original	1.38	1.82	1.80	1.62
Weighted Average Seasoning Prior	7.38	7.83	7.79	7.61
Weighted Average Seasoning Current	8.38	8.83	8.80	8.61

Page 10 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 26, 2007 Distribution



ARM CHARACTERISTICS
ARM CHARACTERISTICS

	Group 3	Group 2	Group 1	Total
Weighted Average Margin Original	2.65965%	2.68109%	2.71250%	2.68159%
Weighted Average Margin Prior	2.66311%	2.67989%	2.71014%	2.68169%
Weighted Average Margin Current	2.66298%	2.67965%	2.71007%	2.68155%
Weighted Average Max Rate Original	11.54419%	11.85399%	11.15109%	11.48751%
Weighted Average Max Rate Prior	11.52628%	11.85452%	11.13117%	11.47650%
Weighted Average Max Rate Current	11.52528%	11.85120%	11.13058%	11.47496%
Weighted Average Min Rate Original	5.80475%	5.57825%	5.90577%	5.78598%
Weighted Average Min Rate Prior	5.83603%	5.57598%	5.87091%	5.78807%
Weighted Average Min Rate Current	5.83498%	5.57284%	5.86987%	5.78663%
Weighted Average Cap Up Original	1.98995%	1.96655%	1.98895%	1.98432%
Weighted Average Cap Up Prior	1.98968%	1.96493%	1.98812%	1.98358%
Weighted Average Cap Up Current	1.98966%	1.96482%	1.98810%	1.98355%
Weighted Average Cap Down Original	1.98995%	1.96655%	1.98895%	1.98432%
Weighted Average Cap Down Prior	1.98968%	1.96493%	1.98812%	1.98358%
Weighted Average Cap Down Current	1.98966%	1.96482%	1.98810%	1.98355%





Page 11 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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


SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

	Group 3	Group 2	Group 1	Total




Current Servicing Fees	28,958.94	17,235.25	23,778.61	69,972.80
Delinquent Servicing Fees	9,309.87	9,270.75	8,613.65	27,194.27
TOTAL SERVICING FEES	38,268.81	26,505.99	32,392.26	97,167.06


Total Servicing Fees	38,268.81	26,505.99	32,392.26	97,167.06
Compensating Interest	-0.00	-0.00	-2,611.11	-2,611.11
Delinquent Servicing Fees	-9,309.87	-9,270.75	-8,613.65	-27,194.27
COLLECTED SERVICING FEES	28,958.94	17,235.25	21,167.50	67,361.69


Total Advanced Interest	236,734.14	169,345.09	164,611.50	570,690.73
Total Advanced Principal	2,526.82	2,059.69	1,817.86	6,404.37
Aggregate Advances with respect to this Distribution	239,260.96	171,404.78	166,429.36	577,095.10





ADDITIONAL COLLATERAL INFORMATION
ADDITIONAL COLLATERAL INFORMATION
	Group 3	Group 2	Group 1	Total
Prepayment Interest Shortfall (PPIS)	0.00	0.00	2,611.11	2,611.11
Compensating Interest	0.00	0.00	(2,611.11)	(2,611.11)
Net Prepayment Interest Shortfall (PPIS)	0.00	0.00	0.00	0.00

Weighted Average Net Mortgage Rate	6.175132%	6.391033%	5.800386%	6.103043%
Market Value of outstanding REO properties.*

* Information not available with Trustee.





Page 12 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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

Delinquency Report

TOTAL
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		6,092,948.55	3,640,515.75	2,780,769.03	12,514,233.33
	% Balance		1.54%	0.92%	0.70%	3.15%
	# Loans		17	8	7	32
	% # Loans		2.04%	0.96%	0.84%	3.84%
FORECLOSURE	Balance	0.00	0.00	0.00	4,305,847.72	4,305,847.72
	% Balance	0.00%	0.00%	0.00%	1.09%	1.09%
	# Loans	0	0	0	8	8
	% # Loans	0.00%	0.00%	0.00%	0.96%	0.96%
BANKRUPTCY	Balance	0.00	0.00	0.00	324,000.00	324,000.00
	% Balance	0.00%	0.00%	0.00%	0.08%	0.08%
	# Loans	0	0	0	1	1
	% # Loans	0.00%	0.00%	0.00%	0.12%	0.12%
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	6,092,948.55	3,640,515.75	7,410,616.75	17,144,081.05
	% Balance	0.00%	1.54%	0.92%	1.87%	4.32%
	# Loans	0	17	8	16	41
	% # Loans	0.00%	2.04%	0.96%	1.92%	4.92%

Page 13 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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


GROUP 1
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		874,009.53	425,000.00	162,819.03	1,461,828.56
	% Balance		0.70%	0.34%	0.13%	1.18%
	# Loans		3	1	1	5
	% # Loans		1.27%	0.42%	0.42%	2.12%
FORECLOSURE	Balance	0.00	0.00	0.00	526,050.00	526,050.00
	% Balance	0.00%	0.00%	0.00%	0.42%	0.42%
	# Loans	0	0	0	1	1
	% # Loans	0.00%	0.00%	0.00%	0.42%	0.42%
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	874,009.53	425,000.00	688,869.03	1,987,878.56
	% Balance	0.00%	0.70%	0.34%	0.56%	1.60%
	# Loans	0	3	1	2	6
	% # Loans	0.00%	1.27%	0.42%	0.85%	2.54%

Page 14 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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


GROUP 2
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		2,031,636.95	1,071,800.00	252,000.00	3,355,436.95
	% Balance		2.25%	1.18%	0.28%	3.71%
	# Loans		6	3	1	10
	% # Loans		2.56%	1.28%	0.43%	4.27%
FORECLOSURE	Balance	0.00	0.00	0.00	1,659,118.52	1,659,118.52
	% Balance	0.00%	0.00%	0.00%	1.83%	1.83%
	# Loans	0	0	0	4	4
	% # Loans	0.00%	0.00%	0.00%	1.71%	1.71%
BANKRUPTCY	Balance	0.00	0.00	0.00	324,000.00	324,000.00
	% Balance	0.00%	0.00%	0.00%	0.36%	0.36%
	# Loans	0	0	0	1	1
	% # Loans	0.00%	0.00%	0.00%	0.43%	0.43%
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	2,031,636.95	1,071,800.00	2,235,118.52	5,338,555.47
	% Balance	0.00%	2.25%	1.18%	2.47%	5.90%
	# Loans	0	6	3	6	15
	% # Loans	0.00%	2.56%	1.28%	2.56%	6.41%

Page 15 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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


GROUP 3
		< 1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT	Balance		3,187,302.07	2,143,715.75	2,365,950.00	7,696,967.82
	% Balance		1.75%	1.18%	1.30%	4.22%
	# Loans		8	4	5	17
	% # Loans		2.20%	1.10%	1.37%	4.67%
FORECLOSURE	Balance	0.00	0.00	0.00	2,120,679.20	2,120,679.20
	% Balance	0.00%	0.00%	0.00%	1.16%	1.16%
	# Loans	0	0	0	3	3
	% # Loans	0.00%	0.00%	0.00%	0.82%	0.82%
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	3,187,302.07	2,143,715.75	4,486,629.20	9,817,647.02
	% Balance	0.00%	1.75%	1.18%	2.46%	5.39%
	# Loans	0	8	4	8	20
	% # Loans	0.00%	2.20%	1.10%	2.20%	5.49%

Page 16 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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 17 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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

Foreclosure Report
Loan Number	Original	Stated		Current	State &		First
Loan Number	Original	Stated		Current	State &		First
&	Principal	Principal	Paid to	Note	LTV at	Original	Payment
Loan Group	Balance	Balance	Date	Rate	Origination	Term	Date
					Origination

Became Foreclosure Property this Period:
6115069 3	918,750.00	918,750.00	01-Jul-2007	6.625%	AZ - 75.00%	360	01-Apr-2007
125448429 3	624,000.00	624,000.00	01-Jul-2007	7.500%	NY - 80.00%	360	01-May-2007
125920936 2	488,000.00	488,000.00	01-Jul-2007	6.875%	NV - 80.00%	360	01-May-2007


TOTAL	2,030,750.00	2,030,750.00

Became Foreclosure Property in a Prior Period:
6102694 2	319,200.00	319,200.00	01-Apr-2007	6.875%	UT - 80.00%	360	01-Mar-2007
125512122 2	412,000.00	412,000.00	01-Apr-2007	6.625%	NY - 80.00%	360	01-Apr-2007
125877886 1	526,050.00	526,050.00	01-Apr-2007	6.375%	TX - 82.20%	360	01-Apr-2007
125878052 3	580,000.00	577,929.20	01-May-2007	6.500%	CA - 80.00%	360	01-May-2007
125966612 2	440,000.00	439,918.52	01-May-2007	6.850%	NY - 80.00%	360	01-May-2007


TOTAL	2,277,250.00	2,275,097.72


TOTAL	4,308,000.00	4,305,847.72
TOTAL


Page 18 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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

Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

		Group 3	Group 2	Group 1	Total


Current


Number of Paid in Full Loans	1	0	1	2
Number of Repurchased Loans	0	0	0	0
Total Number of Loans Prepaid in Full	1	0	1	2
Curtailments Amount	17,229.96	5,146.66	27,934.67	50,311.29
Paid in Full Balance	1,349,627.34	0.00	1,600,000.00	2,949,627.34
Repurchased Loans Balance	0.00	0.00	0.00	0.00
Total Prepayment Amount	1,366,857.30	5,146.66	1,627,934.67	2,999,938.63
Cumulative


Number of Paid in Full Loans	12	11	13	36
Number of Repurchased Loans	1	0	0	1
Total Number of Loans Prepaid in Full	13	11	13	37
Paid in Full Balance	5,586,820.40	4,436,358.80	9,213,457.30	19,236,636.50
Repurchased Loans Balance	125,000.00	0.00	0.00	125,000.00
Curtailments Amount	855,635.60	329,968.47	2,337,627.91	3,523,231.98
Total Prepayment Amount	6,567,456.00	4,766,327.27	11,551,085.21	22,884,868.48

Page 19 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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


VOLUNTARY PREPAYMENTS RATES - Including Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.74%	0.01%	1.30%	0.75%
3 Months Avg SMM	0.30%	0.26%	0.92%	0.49%
12 Months Avg SMM	0.44%	0.64%	1.11%	0.70%
Avg SMM Since Cut-off	0.44%	0.64%	1.11%	0.70%



CPR	8.57%	0.07%	14.48%	8.64%
3 Months Avg CPR	3.56%	3.11%	10.46%	5.69%
12 Months Avg CPR	5.17%	7.41%	12.50%	8.06%
Avg CPR Since Cut-off	5.17%	7.41%	12.50%	8.06%



PSA	511.61%	3.87%	823.10%	501.69%
3 Months Avg PSA Approximation	241.00%	198.83%	671.38%	373.62%
12 Months Avg PSA Approximation	529.77%	695.64%	1,180.77%	788.88%
Avg PSA Since Cut-off Approximation	529.77%	695.64%	1,180.77%	788.88%


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

Page 20 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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 21 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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


VOLUNTARY PREPAYMENTS RATES - Excluding Liquidated Balances



		Group 3	Group 2	Group 1	Total





SMM	0.74%	0.01%	1.30%	0.75%
3 Months Avg SMM	0.30%	0.26%	0.92%	0.49%
12 Months Avg SMM	0.44%	0.64%	1.11%	0.70%
Avg SMM Since Cut-off	0.44%	0.64%	1.11%	0.70%



CPR	8.57%	0.07%	14.48%	8.64%
3 Months Avg CPR	3.56%	3.11%	10.46%	5.69%
12 Months Avg CPR	5.17%	7.41%	12.50%	8.06%
Avg CPR Since Cut-off	5.17%	7.41%	12.50%	8.06%



PSA	511.61%	3.87%	823.10%	501.69%
3 Months Avg PSA Approximation	241.00%	198.83%	671.38%	373.62%
12 Months Avg PSA Approximation	529.77%	695.64%	1,180.77%	788.88%
Avg PSA Since Cut-off Approximation	529.77%	695.64%	1,180.77%	788.88%

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

Page 22 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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 23 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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

125880847 3

1,350,000.00

1,349,627.34

10-Dec-2007

6.625%

CT - 54.00%

Paid Off - 360

01-May-2007

125893435 1

1,600,000.00

21-Nov-2007

6.125%

CA - 43.84%

Paid Off - 360

01-May-2007

TOTAL

2,950,000.00

2,949,627.34

Page 24 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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

Realized Loss Report

COLLATERAL REALIZED LOSSES


		Group 3	Group 2	Group 1	Total


Current





	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



	Special Hazard Loss Coverage Amt					6,000,000.00
	Fraud Loss Coverage Amt					12,595,916.00
	Bankruptcy Loss Coverage Amt					100,000.00

Page 25 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
December 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 26 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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 27 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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 28 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9

Mortgage Pass-Through Certificates

December 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

6,204,661.71

(b) Aggregate Balance of Subordinate Certificates

26,221,176.88

2.Cumulative Loss Trigger

Does a Loss Trigger Event Exist (a > b)

(a) Cumulative Realized Loss

0.00

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

26,238,753.00

(i) Threshold Percentage

100.0000%

(ii) Cutoff Date Subordinate Principal Balance

26,238,753.00

ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK

ADDITIONAL INFORMATION

Group 3

Group 2

Group 1

Total

Senior Percentage

93.577531%

93.422200%

93.257904%

Subordinate Percentage

6.422469%

6.577800%

6.742096%

Senior Prepayment Percentage

100.000000%

Subordinate Prepayment Percentage

0.000000%

Subordinate Pass Through Rate

6.103035%

Page 29 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9



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

Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
	Group 3	Group 2	Group 1	Total
Current Scheduled Payments	995,297.47	514,288.54	643,313.03	2,152,899.03
Current Scheduled Payments 1 Month Prior	996,199.19	515,079.91	644,515.96	2,155,795.06
Current Scheduled Payments 2 Month Prior	996,927.38	517,400.44	653,305.02	2,167,632.84
Current Scheduled Payments 3 Month Prior	997,152.13	522,290.40	657,895.08	2,177,337.61
Current Scheduled Payments 4 Month Prior	1,009,162.94	524,105.18	660,604.47	2,193,872.60
Current Scheduled Payments 5 Month Prior	1,010,001.73	534,119.18	667,776.69	2,211,897.60
Current Scheduled Payments 6 Month Prior	1,017,768.83	537,601.39	688,342.65	2,243,712.87
Current Scheduled Payments 7 Month Prior	1,025,840.70	540,417.27	697,669.09	2,263,927.06
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


Sched. Payments for 60+Day Delinquent Loans	37,442.68	18,727.43	5,900.47	62,070.58
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior	27,957.89	15,852.87	7,895.26	51,706.02
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior	17,094.48	11,367.87	7,047.24	35,509.59
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior	11,042.21	8,572.03	5,052.45	24,666.70
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior	6,291.05	8,572.03	5,052.45	19,915.53
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior	677.08	11,794.17	2,794.64	15,265.89
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior	0.00	3,093.71	1,245.42	4,339.13
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior	0.00	0.00	0.00	0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior	0.00	0.00	0.00	0.00



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 30 of 30

IndyMac INDX Mortgage Loan Trust 2007-AR9 10-D