8-K 1 in05ab08.htm 8K2 


                                       UNITED STATES
                           SECURITIES AND EXCHANGE COMMISSION
                                 Washington, D.C.  20549


                                        FORM 8-K


                     Current Report Pursuant To Section 13 or 15(d) of
                            the Securities Exchange Act of 1934

           Date of Report (Date of earliest event reported):  August 25, 2005
                          (Date of earliest event reported)

           Indymac MBS, Inc. (as Depositor under the Pooling and Servicing
                Agreement, dated as June 1, 2005, providing for the
               issuance of IndyMac INDX Mortgage Loan Trust 2005-AR11
                Mortgage Pass-Through Certificates, Series 2005-AR11)
                 (Exact name of registrant as specified in charter)


                                         DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-119384-29                        95-4791925
          (Commission File Number)        (I.R.S. Employer Identification No.)


          155 NORTH LAKE AVENUE
          PASADENA, CALIFORNIA                         91101
          (Address of principal executive offices)     (Zip Code)



          Registrant's Telephone Number, Including Area Code:  (800) 669-2300

       (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any
of the following provisions (see General Instruction A.2. below):

[  ] Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

[  ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act
(17 CFR 240.14a-12(b))

[  ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

[  ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))


     Item 8.01  Other Events

     Attached hereto is a copy of the Monthly Remittance Statements to the
     Certificateholders which was derived from the monthly information
     submitted by the Master Servicer of the Trust to the Trustee.


     Item 9.01 Financial Statements and Exhibits

     (c) Exhibits:

     Exhibit No. Description

     99.1 Monthly Remittance Statement to the Certificateholders dated as of
     August 25, 2005.

                                    Signatures

               Pursuant to the requirements of the Securities Exchange Act of
          1934, the Registrant has duly caused this report to be signed on its
          behalf by the undersigned, hereunto duly authorized.


                                  Deutsche Bank National Trust Company,
                                  in its capacity as Trustee under the
                                  Pooling and Servicing Agreement on
                                  behalf of Indymac MBS, Inc., Registrant


          Date:  Aug 26, 2005               By:  /s/  Katherine M. Wannenmacher
                                            Katherine M. Wannenmacher
                                            Vice President


                                   EXHIBIT INDEX

          DOCUMENT

          99.1 Monthly Remittance Statement to the Certificateholders
          dated as of August 25, 2005.
                       
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
External Parties Table of Contents
Page
Seller
1. Certificate Payment Report 2
IndyMac Bank
2. Collection Account Report 4
3. Credit Enhancement Report 6
4. Collateral Report 7
Certificate Insurer(s) 5. Delinquency Report 10
6. REO Report 11
7. Foreclosure Report 12
8. Prepayment Report 13
9. Prepayment Detail Report 16
10. Realized Loss Report 17
11. Realized Loss Detail Report 20
Servicer(s)
12. Triggers and Adj. Cert. Report 21
IndyMac Bank
13. Other Related Information 22
Underwriter(s)
Merrill Lynch
Total Number of Pages 22
Dates Contacts
Cut-Off Date: June 01, 2005 Brent Hoyler
Close Date: June 29, 2005 Administrator
First Distribution Date: July 25, 2005 (714) 247-6322
Brent.Hoyler@db.com
Address:
1761 East St. Andrew Place, Santa Ana, CA 92705
Distribution Date: August 25, 2005
Factor Information: (800) 735-7777
Record Date: July 29, 2005
Main Phone Number: (714) 247-6000
https://www.tss.db.com/invr
Page 1 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Certificate Payment Report
Current Period Distribution - REMIC II
Prior Current
Class Original Principal Total Realized Deferred Principal
Class Type Cur Face Value Balance Interest Principal Distribution Loss Interest Balance
(1) (2) (3) (4)=(2)+(3) (5) (6) (7)=(1)-(3)-(5)+(6)
A-1 SR $ 80,105,000.00 79,045,182.34 329,354.93 1,707,526.71 2,036,881.64 0.00 0.00 77,337,655.63
A-2 SR $ 16,771,000.00 16,771,000.00 69,879.17 0.00 69,879.17 0.00 0.00 16,771,000.00
A-3 SR $ 35,232,000.00 35,232,000.00 146,800.00 0.00 146,800.00 0.00 0.00 35,232,000.00
A-4 SR $ 121,473,000.00 120,347,506.22 501,447.94 1,813,340.88 2,314,788.82 0.00 0.00 118,534,165.34
A-5 SR $ 10,635,000.00 10,536,462.66 43,901.93 158,758.57 202,660.50 0.00 0.00 10,377,704.09
A-6 SR $ 39,469,000.00 39,103,304.63 162,930.44 589,190.61 752,121.05 0.00 0.00 38,514,114.02
A-7 NTL/SR $ 0.00 0.00 195,799.77 0.00 195,799.77 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 $ 8,257,000.00 8,255,803.23 39,768.93 1,183.62 40,952.55 0.00 0.00 8,254,619.61
B-2 SUB $ 6,440,000.00 6,439,066.58 31,017.55 923.16 31,940.71 0.00 0.00 6,438,143.42
B-3 SUB $ 4,623,000.00 4,622,329.94 22,266.17 662.70 22,928.87 0.00 0.00 4,621,667.24
B-4 SUB/NOF $ 3,798,000.00 3,797,449.52 18,292.65 544.43 18,837.08 0.00 0.00 3,796,905.09
B-5 SUB/NOF $ 2,146,000.00 2,145,688.96 10,335.97 307.62 10,643.59 0.00 0.00 2,145,381.34
B-6 SUB/NOF $ 1,323,130.66 1,322,938.89 6,372.71 189.67 6,562.38 0.00 0.00 1,322,749.22
P NOF $ 100.00 100.00 0.00 0.00 0.00 0.00 0.00 100.00
Total 330,272,330.66 327,618,832.97 1,578,168.16 4,272,627.97 5,850,796.13 0.00 0.00 323,346,205.00
Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face-
Orig. Principal Prior Current
Period Period (with Notional) Principal Total Principal
Class Starting Ending Method Cusip Balance Balance Interest Principal Distribution Balance
(1) (1) (2) (3) (4)=(2)+(3) (5)
A-1 07/01/05 07/30/05 A-30/360 45660LQF9 80,105,000.00 986.769644 4.111540 21.316106 25.427647 965.453538
A-2 07/01/05 07/30/05 A-30/360 45660LQG7 16,771,000.00 1,000.000000 4.166667 0.000000 4.166667 1,000.000000
A-3 07/01/05 07/30/05 A-30/360 45660LQH5 35,232,000.00 1,000.000000 4.166667 0.000000 4.166667 1,000.000000
A-4 07/01/05 07/30/05 A-30/360 45660LQJ1 121,473,000.00 990.734618 4.128061 14.927934 19.055995 975.806684
A-5 07/01/05 07/30/05 A-30/360 45660LQK8 10,635,000.00 990.734618 4.128061 14.927933 19.055994 975.806685
A-6 07/01/05 07/30/05 A-30/360 45660LQL6 39,469,000.00 990.734618 4.128061 14.927934 19.055995 975.806684
A-7 07/01/05 07/30/05 A-30/360 45660LQM4 303,685,000.00 1,000.000000 0.644746 0.000000 0.644746 991.275354
A-R 07/01/05 07/30/05 A-30/360 45660LQN2 100.00 0.000000 0.000000 0.000000 0.000000 0.000000
B-1 07/01/05 07/30/05 A-30/360 45660LQP7 8,257,000.00 999.855060 4.816390 0.143347 4.959737 999.711712
B-2 07/01/05 07/30/05 A-30/360 45660LQQ5 6,440,000.00 999.855059 4.816390 0.143348 4.959738 999.711711
B-3 07/01/05 07/30/05 A-30/360 45660LQR3 4,623,000.00 999.855059 4.816390 0.143348 4.959738 999.711711
B-4 07/01/05 07/30/05 A-30/360 45660LQT9 3,798,000.00 999.855061 4.816390 0.143346 4.959737 999.711714
B-5 07/01/05 07/30/05 A-30/360 45660LQU6 2,146,000.00 999.855061 4.816389 0.143346 4.959734 999.711715
B-6 07/01/05 07/30/05 A-30/360 45660LQV4 1,323,130.66 999.855063 4.816388 0.143349 4.959737 999.711714
P 07/01/05 07/30/05 45660LQS1 100.00 1,000.000000 0.000000 0.000000 0.000000 1,000.000000
Page 2 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Distribution to Date - REMIC II
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-1 80,105,000.00 663,125.76 2,732,474.95 34,869.42 2,767,344.37 3,430,470.13 0.00 0.00 77,337,655.63
A-2 16,771,000.00 139,758.34 0.00 0.00 0.00 139,758.34 0.00 0.00 16,771,000.00
A-3 35,232,000.00 293,600.00 0.00 0.00 0.00 293,600.00 0.00 0.00 35,232,000.00
A-4 121,473,000.00 1,007,585.44 0.00 37,030.25 2,938,834.66 3,946,420.10 0.00 0.00 118,534,165.34
A-5 10,635,000.00 88,214.43 0.00 3,242.01 257,295.91 345,510.34 0.00 0.00 10,377,704.09
A-6 39,469,000.00 327,384.61 0.00 12,031.87 954,885.98 1,282,270.59 0.00 0.00 38,514,114.02
A-7 0.00 393,413.42 0.00 0.00 0.00 393,413.42 0.00 0.00 0.00
A-R 100.00 0.48 0.00 0.00 100.00 100.48 0.00 0.00 0.00
B-1 8,257,000.00 79,546.09 0.00 2,380.39 2,380.39 81,926.48 0.00 0.00 8,254,619.61
B-2 6,440,000.00 62,041.52 0.00 1,856.57 1,856.58 63,898.10 0.00 0.00 6,438,143.42
B-3 4,623,000.00 44,536.95 0.00 1,332.76 1,332.76 45,869.71 0.00 0.00 4,621,667.24
B-4 3,798,000.00 36,589.08 0.00 1,094.92 1,094.91 37,683.99 0.00 0.00 3,796,905.09
B-5 2,146,000.00 20,674.08 0.00 618.67 618.66 21,292.74 0.00 0.00 2,145,381.34
B-6 1,323,130.66 12,746.74 0.00 381.44 381.44 13,128.18 0.00 0.00 1,322,749.22
P 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
Total 330,272,330.66 3,169,216.94 2,732,474.95 94,838.30 6,926,125.66 10,095,342.60 0.00 0.00 323,346,205.00
Interest Detail - REMIC II
Pass Prior Principal Non- Prior Unscheduled Paid or Current
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-1 5.00000% 79,045,182.34 329,354.93 0.00 0.00 0.00 329,354.93 329,354.93 0.00
A-2 5.00000% 16,771,000.00 69,879.17 0.00 0.00 0.00 69,879.17 69,879.17 0.00
A-3 5.00000% 35,232,000.00 146,800.00 0.00 0.00 0.00 146,800.00 146,800.00 0.00
A-4 5.00000% 120,347,506.22 501,447.94 0.00 0.00 0.00 501,447.94 501,447.94 0.00
A-5 5.00000% 10,536,462.66 43,901.93 0.00 0.00 0.00 43,901.93 43,901.93 0.00
A-6 5.00000% 39,103,304.63 162,930.44 0.00 0.00 0.00 162,930.44 162,930.44 0.00
A-7 0.78051% 303,685,000.00 197,523.09 0.00 0.00 0.00 197,523.09 195,799.77 1,723.32
A-R 0.00000% 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
B-1 5.78051% 8,255,803.23 39,768.93 0.00 0.00 0.00 39,768.93 39,768.93 0.00
B-2 5.78051% 6,439,066.58 31,017.55 0.00 0.00 0.00 31,017.55 31,017.55 0.00
B-3 5.78051% 4,622,329.94 22,266.17 0.00 0.00 0.00 22,266.17 22,266.17 0.00
B-4 5.78051% 3,797,449.52 18,292.65 0.00 0.00 0.00 18,292.65 18,292.65 0.00
B-5 5.78051% 2,145,688.96 10,335.97 0.00 0.00 0.00 10,335.97 10,335.97 0.00
B-6 5.78051% 1,322,938.89 6,372.71 0.00 0.00 0.00 6,372.71 6,372.71 0.00
P 0.00000% 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Total 631,303,832.97 1,579,891.48 0.00 0.00 0.00 1,579,891.48 1,578,168.16 1,723.32
Page 3 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Collection Account Report
SUMMARY
Total
Principal Collections 4,272,627.98
Principal Withrawals 0.00
Principal Other Accounts 0.00
TOTAL NET PRINCIPAL 4,272,627.98
Interest Collections 1,609,005.86
Interest Withdrawals -0.00
Interest Other Accounts 0.00
Interest Fees -30,837.72
TOTAL NET INTEREST 1,578,168.14
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION 5,850,796.12
PRINCIPAL - COLLECTIONS
Total
Scheduled Principal Received 46,970.23
Curtailments 689,484.38
Prepayments In Full 3,536,173.37
Repurchased/Substitutions 0.00
Liquidations 0.00
Insurance Principal 0.00
Other Additional Principal 0.00
Delinquent Principal -34,775.97
Realized Losses -0.00
Advanced Principal 34,775.97
TOTAL PRINCIPAL COLLECTED 4,272,627.98
PRINCIPAL - WITHDRAWALS
SPACE INTENTIONALLY LEFT BLANK
PRINCIPAL - OTHER ACCOUNTS
Total
TOTAL PRINCIPAL OTHER ACCOUNTS 0.00
Page 4 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
INTEREST - COLLECTIONS
Total
Scheduled Interest 1,682,869.64
Repurchased/Substitution Interest 0.00
Liquidation Interest 0.00
Insurance Interest 0.00
Other Additional Interest 0.00
Prepayment Interest Shortfalls -1,570.93
Delinquent Interest -1,218,013.91
Compensating Interest 1,570.93
Civil Relief Act Shortfalls -0.00
Interest Advanced 1,144,150.14
TOTAL INTEREST COLLECTED 1,609,005.86
INTEREST - WITHDRAWALS
Total
TOTAL INTEREST WITHDRAWALS 0.00
INTEREST - OTHER ACCOUNTS
Total
Prepayment Charges 0.00
TOTAL INTEREST OTHER ACCOUNTS 0.00
INTEREST - FEES
Total
Current Servicing Fees 28,517.08
Trustee Fees 2,320.63
TOTAL INTEREST FEES 30,837.72
Page 5 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Credit Enhancement Report
ACCOUNTS
SPACE INTENTIONALLY LEFT BLANK
INSURANCE
SPACE INTENTIONALLY LEFT BLANK
STRUCTURAL FEATURES
SPACE INTENTIONALLY LEFT BLANK
Page 6 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Collateral Report
COLLATERAL
Total
Loan Count:
Original 1,091
Prior 1,087
Prefunding 0
Scheduled Paid Offs -0
Full Voluntary Prepayments -10
Repurchases -0
Liquidations -0
Current 1,077
Principal Balance:
Original 330,272,230.66
Prior 327,618,732.96
Prefunding 0.00
Scheduled Principal -46,970.23
Partial Prepayments -689,484.38
Full Voluntary Prepayments -3,536,173.37
Repurchases -0.00
Liquidations -0.00
Current 323,346,104.98
PREFUNDING
SPACE INTENTIONALLY LEFT BLANK
Page 7 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
CHARACTERISTICS
Total
Weighted Average Coupon Original 6.16436%
Weighted Average Coupon Prior 6.16436%
Weighted Average Coupon Current 6.16401%
Weighted Average Months to Maturity Original 358
Weighted Average Months to Maturity Prior 358
Weighted Average Months to Maturity Current 357
Weighted Avg Remaining Amortization Term Original 358
Weighted Avg Remaining Amortization Term Prior 358
Weighted Avg Remaining Amortization Term Current 357
Weighted Average Seasoning Original 1.26
Weighted Average Seasoning Prior 1.26
Weighted Average Seasoning Current 2.25
Page 8 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
ARM CHARACTERISTICS
Total
Weighted Average Margin Original 2.75000%
Weighted Average Margin Prior 2.75000%
Weighted Average Margin Current 2.75000%
Weighted Average Max Rate Original 12.16436%
Weighted Average Max Rate Prior 12.16436%
Weighted Average Max Rate Current 12.16401%
Weighted Average Min Rate Original 6.11417%
Weighted Average Min Rate Prior 6.11417%
Weighted Average Min Rate Current 6.11341%
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
Total
Current Servicing Fees 28,517.08
Delinquent Servicing Fees 73,863.77
TOTAL SERVICING FEES 102,380.86
Total Servicing Fees 102,380.86
Compensating Interest -1,570.93
Delinquent Servicing Fees -73,863.77
COLLECTED SERVICING FEES 26,946.16
Total Advanced Interest 1,144,150.14
Total Advanced Principal 34,775.97
Aggregate Advances with respect to this Distribution 1,178,926.11
ADDITIONAL COLLATERAL INFORMATION
Total
Prepayment Interest Shortfall (PPIS) 1,570.93
Compensating Interest -1,570.93
Net Prepayment Interest Shortfall (PPIS) 0.00
Weighted Average Net Mortgage Rate 5.780505%
Next Weighted Average Net Mortgage Rate 5.776203%
Page 9 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Delinquency Report
TOTAL
< 1 PAYMENT 1 PAYMENT 2 PAYMENTS 3+ PAYMENTS TOTAL
DELINQUENT Balance 161,350.00 0.00 0.00 161,350.00
% Balance 0.05% 0.00% 0.00% 0.05%
# Loans 1 0 0 1
% # Loans 0.09% 0.00% 0.00% 0.09%
FORECLOSURE Balance 0.00 0.00 0.00 0.00 0.00
% Balance 0.00% 0.00% 0.00% 0.00% 0.00%
# Loans 0 0 0 0 0
% # Loans 0.00% 0.00% 0.00% 0.00% 0.00%
BANKRUPTCY Balance 120,999.36 0.00 0.00 0.00 120,999.36
% Balance 0.04% 0.00% 0.00% 0.00% 0.04%
# Loans 1 0 0 0 1
% # Loans 0.09% 0.00% 0.00% 0.00% 0.09%
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 120,999.36 161,350.00 0.00 0.00 282,349.36
% Balance 0.04% 0.05% 0.00% 0.00% 0.09%
# Loans 1 1 0 0 2
% # Loans 0.09% 0.09% 0.00% 0.00% 0.19%
Page 10 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
REO Report
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
TOTAL
Page 11 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Foreclosure Report
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
TOTAL
Page 12 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Prepayment Report
VOLUNTARY PREPAYMENTS
Total
Current
Number of Paid in Full Loans 10
Number of Repurchased Loans 0
Total Number of Loans Prepaid in Full 10
Curtailments Amount 689,484.38
Paid in Full Balance 3,536,173.37
Repurchased Loans Balance 0.00
Total Prepayment Amount 4,225,657.75
Cumulative
Number of Paid in Full Loans 14
Number of Repurchased Loans 0
Total Number of Loans Prepaid in Full 14
Paid in Full Balance 5,649,423.37
Repurchased Loans Balance 0.00
Curtailments Amount 1,181,862.35
Total Prepayment Amount 6,831,285.72
Page 13 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
VOLUNTARY PREPAYMENTS RATES
Total
SMM 1.29%
3 Months Avg SMM 1.04%
12 Months Avg SMM 1.04%
Avg SMM Since Cut-off 1.04%
CPR 14.43%
3 Months Avg CPR 11.79%
12 Months Avg CPR 11.79%
Avg CPR Since Cut-off 11.79%
PSA 3,205.00%
3 Months Avg PSA Approximation 3,360.93%
12 Months Avg PSA Approximation 3,360.93%
Avg PSA Since Cut-off Approximation 3,360.93%
Page 14 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
PREPAYMENT CALCULATION METHODOLOGY
Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidations )/(Beg Principal Balance - Sched Principal) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) PSA Standard Prepayment Model: CPR/(0.002*min(30,WAS)) Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn)*(1-SMMn+1)*...*(1-SMMm)]^(1/months in period n,m) Conditional Prepayment Rate (CPR): 1-((1-SMM)^12) Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.002*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) Dates correspond to distribution dates. Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.
Page 15 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 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 Prepayment Note LTV at & Payment
Loan Group Status Balance Amount Date Rate Origination Original Term Date
120629936 1 220,050.00 220,050.00 22-Jul-2005 7.500% AZ - 79.99% Paid Off - 360 01-Jun-2005
121068974 1 223,460.00 223,459.98 26-Jul-2005 6.375% FL - 80.00% Paid Off - 360 01-May-2005
121131070 1 604,000.00 604,000.00 03-Aug-2005 7.250% IL - 80.00% Paid Off - 360 01-Jun-2005
121150948 1 332,000.00 332,000.00 25-Jul-2005 6.375% CA - 80.00% Paid Off - 360 01-Jun-2005
121172042 1 328,697.00 328,696.98 15-Aug-2005 6.125% CO - 80.00% Paid Off - 360 01-May-2005
121231120 1 438,000.00 438,000.00 29-Jul-2005 6.625% NJ - 76.17% Paid Off - 360 01-Jun-2005
121297382 1 430,000.00 320,000.00 29-Jul-2005 5.750% CA - 48.09% Paid Off - 360 01-Jun-2005
121357347 1 375,000.00 375,000.00 02-Aug-2005 7.125% CA - 69.44% Paid Off - 360 01-Jul-2005
121357723 1 487,500.00 486,966.41 15-Aug-2005 5.500% CA - 65.00% Paid Off - 360 01-Jul-2005
121361156 1 208,000.00 208,000.00 20-Jul-2005 6.875% VA - 80.00% Paid Off - 360 01-Jul-2005
TOTAL 3,646,707.00 3,536,173.37
Page 16 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Realized Loss Report
COLLATERAL REALIZED LOSSES
Total
Current
Number of Loans Liquidated 0
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 0
Collateral Realized Loss/(Gain) Amount 0.00
Net Liquidation Proceeds 0.00
Special Hazard Loss Coverage Amt 3,276,187.33
Fraud Loss Coverage Amt 0.00
Bankruptcy Loss Coverage Amt 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 17 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
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%
Loss Severity Approximation 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 18 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 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)
Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)
Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,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.
Page 19 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Realized Loss Detail Report
Loan Number Current State & Prior Realized Cumulative
& Loan Note LTV at Original Principal Loss/(Gain) Realized Realized
Loan Group Status Rate Origination Term Balance Revision Loss/(Gain) Loss/(Gain)
TOTAL
Page 20 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
Total
Has Optional Termination Date Reached (0=No,1=Yes) 0
Has Sr. Prepay Stepdown Condition Occurred 0
Has Sr. Credit Supp. Depletion Date Occured 0
Has Spl. Haz. Cov. Term. Date Occured (0=No,1=Yes) 0
Has Fraud Loss Coverage Term. Date Occured 0
Has Bankrpt Loss Cov. Term. Date Occured 0
ADJUSTABLE RATE CERTIFICATE INFORMATION
SPACE INTENTIONALLY LEFT BLANK
ADDITIONAL INFORMATION
Total
Current Senior Percentage 91.885911%
Current Subordinate Percentage 8.114089%
Senior Prepayment Percentage 100.000000%
Subordinate Prepayment Percentage 0.000000%
Next Senior Percentage 82.953152%
Next Subordinate Percentage 17.046848%
Next Senior Prepayment Percentage 100.000000%
Next Subordinate Prepayment Percentage 0.000000%
Page 21 of 22
IndyMac INDX Mortgage Loan Trust 2005-AR11
Mortgage Pass-Through Certificates
2005-AR11
August 25, 2005 Distribution
Other Related Information
ADDITIONAL INFORMATION
Total
Sched. Payments for 60+Day Delinquent Loans 592.39
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
Page 22 of 22