IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 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

Certificate Insurer(s)

4. Collateral Report

Ambac

5. Delinquency Report

6. REO Report

Servicer(s)

7. Foreclosure Report

IndyMac Bank

8. Prepayment Report

9. Prepayment Detail Report

Underwriter(s)

10. Realized Loss Report

Credit Suisse

11. Triggers and Adj. Cert. Report

12. Additional Certificate Report

13. Other Related Information

Total Number of Pages

Dates

Contacts

Cut-Off Date:

March 01, 2007

Jennifer Hermansader

Close Date:

March 27, 2007

Administrator

First Distribution Date:

April 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

December 24, 2007

Main Phone Number:

(714) 247-6000

Determination Date:

December 18, 2007

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

Page 1 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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

Certificate Payment Report
Current Period Distribution - REMIC 2
			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)
A	FLT/STEP/WA	107,250,000.00	83,697,515.86	345,862.55	2,943,803.31	3,289,665.86	0.00	0.00	80,753,712.55
A	FLT/STEP/WA	107,250,000.00	83,697,515.86	345,862.55	2,943,803.31	3,289,665.86	0.00	0.00	80,753,712.55
M	FLT/STEP/WA	770,000.00	770,000.00	4,035.28	0.00	4,035.28	0.00	0.00	770,000.00
B	FLT/STEP/WA	1,980,000.00	1,980,000.00	10,376.44	0.00	10,376.44	0.00	0.00	1,980,000.00
C	EXE	0.00	1,662,201.66	0.00	0.00	0.00	0.00	317,524.90	1,979,726.56
P	EXE	100.00	100.00	15,587.06	0.00	15,587.06	0.00	0.00	100.00
R	NPR/EXE	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00





Total		110,000,100.00	88,109,817.52	375,861.33	2,943,803.31	3,319,664.64	0.00	317,524.90	85,483,539.11
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)

A	11/26/07	12/25/07	A-Act/360	45668QAA8	107,250,000.00	780.396418	3.224826	27.448050	30.672875	752.948369
A	11/26/07	12/25/07	A-Act/360	45668QAA8	107,250,000.00	780.396418	3.224826	27.448050	30.672875	752.948369
M	11/26/07	12/25/07	A-Act/360	45668QAB6	770,000.00	1,000.000000	5.240623	0.000000	5.240623	1,000.000000
B	11/26/07	12/25/07	A-Act/360	45668QAC4	1,980,000.00	1,000.000000	5.240626	0.000000	5.240626	1,000.000000
C		45668QAD2	0.00	0.000000	0.000000	0.000000	0.000000	0.000000
P		45668QAE0	100.00	1,000.000000	155,870.600000	0.000000	155,870.600000	1,000.000000
R		45668QAF7	0.00	0.000000	0.000000	0.000000	0.000000	0.000000







Page 2 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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


Distribution to Date - REMIC 2
									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)
A	107,250,000.00	3,965,402.97	26,328,935.12	167,351.98	26,496,287.44	30,461,690.41	0.00	0.00	80,753,712.55
M	770,000.00	39,315.46	0.00	0.00	0.00	39,315.46	0.00	0.00	770,000.00
B	1,980,000.00	101,096.88	0.00	0.00	0.00	101,096.88	0.00	0.00	1,980,000.00
C	0.00	0.00	(1,968,148.23)	(11,577.95)	0.00	0.00	0.00	1,979,726.56	1,979,726.56
P	100.00	89,781.38	0.00	0.00	0.00	89,781.38	0.00	0.00	100.00
R	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00





Total	110,000,100.00	4,195,596.69	24,360,786.89	155,774.03	26,496,287.44	30,691,884.13	0.00	1,979,726.56	85,483,539.11


Interest Detail - REMIC 2
	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)
A	4.95875%	83,697,515.86	345,862.55	0.00	0.00	0.00	345,862.55	345,862.55	0.00
M	6.28875%	770,000.00	4,035.28	0.00	0.00	0.00	4,035.28	4,035.28	0.00
B	6.28875%	1,980,000.00	10,376.44	0.00	0.00	0.00	10,376.44	10,376.44	0.00
C	229.23204%	1,662,201.66	0.00	0.00	0.00	0.00	0.00	317,524.90	0.00
P	187,044.72000%	100.00	0.00	0.00	0.00	0.00	0.00	15,587.06	0.00
R	0.00000%	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00





Total		88,109,817.52	360,274.27	0.00	0.00	0.00	360,274.27	693,386.23	0.00



Page 3 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

Collection Account Report

SUMMARY

Total

Principal Collections

2,626,278.41

Principal Withrawals

0.00

Principal Other Accounts

0.00

TOTAL NET PRINCIPAL

2,626,278.41

Interest Collections

712,890.40

Interest Withdrawals

-0.00

Interest Other Accounts

15,587.06

Interest Fees

-35,091.23

TOTAL NET INTEREST

693,386.23

TOTAL AVAILABLE FUNDS FOR DISTRIBUTION

3,319,664.64

PRINCIPAL - COLLECTIONS

Total

Scheduled Principal Received

12,197.04

Prepayments In Full

2,574,990.74

Curtailments

39,090.63

Liquidations

0.00

Insurance Principal

0.00

Repurchased Principal Amounts

0.00

Other Principal

0.00

Realized Loss Of Principal

-0.00

Delinquent Principal

-2,750.51

Advanced Principal

2,750.51

TOTAL PRINCIPAL COLLECTED

2,626,278.41

PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK

PRINCIPAL - OTHER ACCOUNTS

Total

Prefund Release

0.00

Page 4 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

INTEREST - COLLECTIONS

Total

Scheduled Interest

718,181.13

Liquidation Interest

0.00

Repurchased Interest

0.00

Insurance Interest

0.00

Other Interest

0.00

Realized Loss of Interest

-0.00

Relief Act Interest Shortfalls

-0.00

Prepayment Interest Shortfalls

-1,736.21

Compensating Interest

1,736.21

Delinquent Interest

-209,476.24

Interest Advanced

204,185.51

TOTAL INTEREST COLLECTED

712,890.40

INTEREST - WITHDRAWALS

Total

Nonrecoverable Advances

0.00

TOTAL INTEREST WITHDRAWALS

0.00

INTEREST - OTHER ACCOUNTS

Total

Prepayment Charges

15,587.06

Interest from Interest Coverage Account

0.00

TOTAL INTEREST OTHER ACCOUNTS

15,587.06

INTEREST FEES

Total

Current Servicing Fees

13,065.48

Current Trustee Fees

1,101.37

Insurance Premium for Class A Certificates

20,924.38

TOTAL INTEREST OTHER FEES

35,091.23

Page 5 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

Credit Enhancement Report

ACCOUNTS

Excess Reserve Fund Account

Beginning Account Balance

0.00

Initial Deposit by Underwriter

0.00

Interest Earnings

0.00

Withdrawl from reserve fund

0.00

Ending Account Balance

0.00

INSURANCE

Total

Insurance Premium for Class A Certificates

20,924.38

STRUCTURAL FEATURES

Total

Overcollateralized Amount - Prior Period

1,662,201.66

Current Period Principal Realized Loss

0.00

Overcollateralized Amount - After Current Losses

0.00

Net Monthly Excess Cashflow

0.00

Overcollateralization Increase Amount

317,524.90

Overcollateralization Reduction Amount

0.00

Overcollateralization Amount - Ending

1,979,726.56

Overcollateralization Deficiency Amount

165,273.44

Required Overcollateralized Amount

2,145,000.00

Credit Enhancement Percentage

5.0076%

Page 6 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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

Collateral Report


COLLATERAL



		Total



Loan Count:
Loan Count:


Original	405
Prior	481
Prefunding	0
Scheduled Paid Offs	-0
Full Voluntary Prepayments	-12
Repurchases	-0
Liquidations	-0
Current	469
Principal Balance:


Original	77,286,109.65
Prior	88,109,817.52
Prefunding	0.00
Scheduled Principal	-12,197.04
Partial Prepayments	-39,090.63
Full Voluntary Prepayments	-2,574,990.74
Repurchases	-0.00
Liquidations	-0.00
Current	85,483,539.11





PREFUNDING

	Total
Prefunding Account Original Balance	32,713,990.35
Prefunding Account Beginning Balance	0.00
Subsequent Loans Added to the Pool	0.00
Prefund Release to Certificate Holders	0.00
Prefunding Account Ending Balance	0.00
Interest Coverage Account Balance	0.00

Page 7 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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


CHARACTERISTICS
CHARACTERISTICS

							Total
Weighted Average Coupon Original							7.25826%
Weighted Average Coupon Prior							9.78787%
Weighted Average Coupon Current							9.78117%
Weighted Average Months to Maturity Original							53
Weighted Average Months to Maturity Prior							45
Weighted Average Months to Maturity Current							44
Weighted Avg Remaining Amortization Term Original							360
Weighted Avg Remaining Amortization Term Prior							353
Weighted Avg Remaining Amortization Term Current							352
Weighted Average Seasoning Original							1.15
Weighted Average Seasoning Prior							7.78
Weighted Average Seasoning Current							8.77

Page 8 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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


ARM CHARACTERISTICS
ARM CHARACTERISTICS

							Total
Weighted Average Margin Original							4.89147%
Weighted Average Margin Prior							4.87102%
Weighted Average Margin Current							4.87292%
Weighted Average Max Rate Original							12.71833%
Weighted Average Max Rate Prior							12.77527%
Weighted Average Max Rate Current							12.77200%
Weighted Average Min Rate Original							4.89147%
Weighted Average Min Rate Prior							4.87102%
Weighted Average Min Rate Current							4.87292%
Weighted Average Cap Up Original							1.00000%
Weighted Average Cap Up Prior							1.00000%
Weighted Average Cap Up Current							1.00000%
Weighted Average Cap Down Original							1.00000%
Weighted Average Cap Down Prior							1.00000%
Weighted Average Cap Down Current							1.00000%




SERVICING FEES & ADVANCES
SERVICING FEES & ADVANCES

							Total




Current Servicing Fees							13,065.48
Delinquent Servicing Fees							5,290.73
TOTAL SERVICING FEES							18,356.22


Total Servicing Fees							18,356.22
Compensating Interest							-1,736.21
Delinquent Servicing Fees							-5,290.73
COLLECTED SERVICING FEES							11,329.27


Total Advanced Interest							411,121.53
Total Advanced Principal							2,750.51
Unrecovered Advances							0.00
Non Recoverable Advance							0.00
Servicer Escrow Advances							0.00




ADDITIONAL COLLATERAL INFORMATION
ADDITIONAL COLLATERAL INFORMATION
							Total
Prepayment Interest Shortfall (PPIS)							1,736.21
Compensating Interest							(1,736.21)
Net Prepayment Interest Shortfall							0.00







Page 9 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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		2,944,007.03	880,867.40	1,035,709.10	4,860,583.53
	% Balance		3.44%	1.03%	1.21%	5.69%
	# Loans		14	6	5	25
	% # Loans		2.99%	1.28%	1.07%	5.33%
FORECLOSURE	Balance	0.00	0.00	0.00	673,100.73	673,100.73
	% Balance	0.00%	0.00%	0.00%	0.79%	0.79%
	# Loans	0	0	0	2	2
	% # Loans	0.00%	0.00%	0.00%	0.43%	0.43%
BANKRUPTCY	Balance	0.00	0.00	0.00	255,152.32	255,152.32
	% Balance	0.00%	0.00%	0.00%	0.30%	0.30%
	# Loans	0	0	0	1	1
	% # Loans	0.00%	0.00%	0.00%	0.21%	0.21%
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	2,944,007.03	880,867.40	1,963,962.15	5,788,836.58
	% Balance	0.00%	3.44%	1.03%	2.30%	6.77%
	# Loans	0	14	6	8	28
	% # Loans	0.00%	2.99%	1.28%	1.71%	5.97%

Page 10 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

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 11 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 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 in a Prior Period:

******698 1

448,800.00

01-Jun-2007

9.750%

FL - 85.00%

01-May-2007

******666 1

225,000.00

224,300.73

01-May-2007

10.750%

FL - 90.00%

01-May-2007

TOTAL

673,800.00

673,100.73

Page 12 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

Prepayment Report

VOLUNTARY PREPAYMENTS

Total

Current

Number of Paid in Full Loans

Number of Repurchased Loans

Total Number of Loans Prepaid in Full

Curtailments Amount

39,090.63

Paid in Full Balance

2,574,990.74

Repurchased Loans Balance

0.00

Total Prepayment Amount

2,614,081.37

Cumulative

Number of Paid in Full Loans

124

Number of Repurchased Loans

Total Number of Loans Prepaid in Full

124

Paid in Full Balance

23,741,411.15

Repurchased Loans Balance

0.00

Curtailments Amount

608,139.58

Total Prepayment Amount

24,349,550.73

Page 13 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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


VOLUNTARY PREPAYMENTS RATES - Including Liquidated Balances



		Total





SMM	2.97%
3 Months Avg SMM	2.61%
12 Months Avg SMM	2.78%
Avg SMM Since Cut-off	2.78%



CPR	30.33%
3 Months Avg CPR	27.22%
12 Months Avg CPR	28.72%
Avg CPR Since Cut-off	28.72%



PSA	1,729.36%
3 Months Avg PSA Approximation	1,749.50%
12 Months Avg PSA Approximation	2,978.15%
Avg PSA Since Cut-off Approximation	2,978.16%


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

Page 14 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

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 15 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

VOLUNTARY PREPAYMENTS RATES - Excluding Liquidated Balances

Total

SMM

2.97%

3 Months Avg SMM

2.61%

12 Months Avg SMM

2.78%

Avg SMM Since Cut-off

2.78%

CPR

30.33%

3 Months Avg CPR

27.22%

12 Months Avg CPR

28.72%

Avg CPR Since Cut-off

28.72%

PSA

1,729.36%

3 Months Avg PSA Approximation

1,749.50%

12 Months Avg PSA Approximation

2,978.15%

Avg PSA Since Cut-off Approximation

2,978.16%

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

Page 16 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

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 17 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

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

******398 1

57,150.00

57,145.37

05-Dec-2007

10.625%

GA - 90.00%

Paid Off - 60

01-Apr-2007

******836 1

65,610.00

27-Nov-2007

10.625%

FL - 90.00%

Paid Off - 60

01-Mar-2007

******506 1

155,300.00

13-Dec-2007

10.125%

OR - 90.00%

Paid Off - 24

01-Mar-2007

******016 1

113,400.00

109,000.00

07-Dec-2007

11.375%

ME - 90.00%

Paid Off - 24

01-Mar-2007

******484 1

360,000.00

355,766.42

04-Dec-2007

9.125%

CA - 80.00%

Paid Off - 60

01-Mar-2007

******375 1

351,900.00

28-Nov-2007

10.125%

CO - 90.00%

Paid Off - 60

01-Mar-2007

******171 1

261,000.00

20-Nov-2007

10.125%

CO - 90.00%

Paid Off - 60

01-Mar-2007

******809 1

175,500.00

21-Nov-2007

10.125%

UT - 90.00%

Paid Off - 60

01-Apr-2007

******015 1

182,700.00

182,660.56

06-Dec-2007

10.125%

TX - 90.00%

Paid Off - 60

01-Mar-2007

******076 1

87,300.00

87,049.68

03-Dec-2007

11.125%

AZ - 90.00%

Paid Off - 24

01-Apr-2007

******144 1

672,000.00

13-Dec-2007

6.875%

HI - 56.00%

Paid Off - 60

01-May-2007

******525 1

103,000.00

102,058.71

27-Nov-2007

9.250%

WA - 80.00%

Paid Off - 60

01-May-2007

TOTAL

2,584,860.00

2,574,990.74

Page 18 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

Realized Loss 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 19 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

COLLATERAL REALIZED LOSSES

Total

Current

Subsequent Recoveries

0.00

Number of Loans Liquidated

Collateral Principal Realized Loss/(Gain) Amount

0.00

Collateral Interest Realized Loss/(Gain) Amount

0.00

Net Liquidation Proceeds

0.00

Cumulative

Number of Loans Liquidated

Collateral Realized Loss/(Gain) Amount

0.00

Net Liquidation Proceeds

0.00

Cumulative Subsequent Recoveries

0.00

Page 20 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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


DEFAULT SPEEDS
DEFAULT SPEEDS
								Total




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


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


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


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


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

Page 21 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

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 22 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1

Mortgage Pass-Through Certificates

December 26, 2007 Distribution

Triggers and Adj. Cert. Report

TRIGGER EVENTS

Total

Stepdown Date has occurred

Optional Termination Date

Does an Event of Default Exist

Trigger Event Exist (Delq Trig= Y or Loss Trig= Y)

Delinquency Trigger(Applicable from 4/25/2010)

Does Delinquency Trigger Event Exist (a > b)

(a) 60+ Day Delinquency Balance

2,844,829.55

(b) 3% of Ending Pool Principal Balance

2,564,506.17

Cumulative Loss Trigger(Applicable from 3/25/2009)

Does a Loss Trigger Event Exist (a > b)

(a) Cumulative Realized Loss

0.00

(b) 1% of Ending Pool Principal Balance

854,835.39

ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK

ADDITIONAL INFORMATION

Total

Current LIBOR Rate

4.788750%

Libor Rate Determination Date

11/22/2007

Next LIBOR Rate

4.865000%

Next Libor Determination Date

12/21/2007

Page 23 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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

Additional Certificate Report

ADDITIONAL CERTIFICATE REPORT

		Next Pass Through Rate	Interest Carryfrwd Due	Interest Carryfrwd Paid	NET WAC Shortfall CarryOver	NET WAC Shortfall Paid


CLASS
	A	5.03500%	$0.00	$0.00	$0.00	$0.00
	M	6.36500%	$0.00	$0.00	$0.00	$0.00
	B	6.36500%	$0.00	$0.00	$0.00	$0.00
	C	0.00000%	$0.00	$0.00	$0.00	$0.00
	P	0.00000%	$0.00	$0.00	$0.00	$0.00
	R	0.00000%	$0.00	$0.00	$0.00	$0.00




Page 24 of 25

IndyMac Residential Mortgage-Backed Trust 2007-L1



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

Other Related Information
ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
							Total
Sched. Payments for 60+Day Delinquent Loans							0.00
Sched. Pmts - 60+Day Delinquent Loans, 1 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 2 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 3 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 4 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 5 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 6 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 7 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 8 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 9 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 10 Month Prior							0.00
Sched. Pmts - 60+Day Delinquent Loans, 11 Month Prior							0.00



Current Scheduled Payments							730,378.17
Current Scheduled Payments 1 Month Prior							749,394.26
Current Scheduled Payments 2 Month Prior							772,545.05
Current Scheduled Payments 3 Month Prior							804,220.75
Current Scheduled Payments 4 Month Prior							837,063.28
Current Scheduled Payments 5 Month Prior							788,615.80
Current Scheduled Payments 6 Month Prior							738,158.11
Current Scheduled Payments 7 Month Prior							684,851.38
Current Scheduled Payments 8 Month Prior							483,373.53
Current Scheduled Payments 9 Month Prior							0.00
Current Scheduled Payments 10 Month Prior							0.00
Current Scheduled Payments 11 Month Prior							0.00





Page 25 of 25

IndyMac Residential Mortgage-Backed Trust, Series 2007-L1 10-D