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

STRUCTURED ASSET SECURITIES CORPORATION (as Depositor under the Trust Agreement dated as of March 1, 2005, providing for the issuance of Structured Asset Securities Corporation Mortgage Pass-Through Certificates, Series 2005-7XS)
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction
of incorporation)

333-120575
(Commission
File Number)

74-2440850
(IRS Employer
Identification No.)

745 Seventh Avenue, 7th Floor, New York, NY
(Address of principal executive offices)

10019
(Zip Code)

Registrant's telephone number, including area code 212-526-7000

(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 under the Exchange Act (17 CFR 240.14a-12)

[ ] 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))

Section 8 - Other Events

Item 8.01. Other Events.

This current report on Form 8-K relates to the monthly distribution reported to the holders of Sturctured Asset Securities Corporation, Mortgage Pass-Through Certificates, Series 2005-7XS, which was made on August 25, 2005.

Section 9 - Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits.

99.1 Monthly distribution report pursuant to Section 4.03 of the Trust Agreement for the distribution on August 25, 2005.

(Exhibit No. Description)

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.

LASALLE BANK NATIONAL ASSOCIATION, IN ITS CAPACITY AS TRUSTEE UNDER THE TRUST AGREEMENT ON BEHALF OF STRUCTURED ASSET SECURITIES CORPORATION, REGISTRANT

By: /s/ Russell Goldenberg
Russell Goldenberg
Group Senior Vice President

Date: August 30, 2005

Structured Asset Securities Corporation

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Reporting Package Table of Contents

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Administrator:
Leigh Gordon 312.904.4839
leigh.gordon@abnamro.com

Analyst:
William Wong 714.259.6243
william.wong@abnamro.com

Statement Date:

135 S. LaSalle Street, Suite 1625
Chicago, IL 60603
USA

Statements to Certificateholders
Cash Reconciliation Summary
Shortfall Summary Report
Bond Interest Reconciliation

Bond Principal Reconciliation

Other Related Information
Asset-Backed Facts ~ 15 Month Loan Status Summary Part I

Asset-Backed Facts ~ 15 Month Loan Status Summary Part II
Asset-Backed Facts ~ 15 Month Loan Payoff/Loss Summary
Realized Loss Detail

Page 2-3
Page 4-6
Page 7
Page 8

Page 9

Page 10
Page 11-13

Page 14-16
Page 17-19

Page 20-22

Substitution Detail History

Page 23

Page(s)

Information is available for this issue from the following sources

Issue Id:

Monthly Data File
Name:

SASC57XS

SASC57XS_200508_3.ZIP

Closing Date:

First Payment Date:

Rated Final Payment: Date:

31-Mar-05
25-Apr-05

25-Apr-35

Parties to The Transaction

Depositor: Structured Asset Securities Corporation

Underwriter: Lehman Brothers Inc.

Master Servicer: Aurora Loan Services LLC

Rating Agency: Standard & Poor's Ratings Services/Moody's Investors Service, Inc.

800.246.5761

LaSalle Factor Line

LaSalle Web Site

Servicer Web Site

www.alservices.com

www.etrustee.net

Page 1 of 23

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 1000

Next Rate(3)

WAC:
WAMM:
Current Index:
Next Index:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

6.518346%

3.460000%
3.641250%

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Structured Asset Securities Corporation

Mortgage Pass-Through Certificates

Series 2005-7XS

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

345

Bond Payments

Statement Date:

ABN AMRO Acct: 722499.2

842.058037354

48.943492909

0.000000000

793.114544444

2.595877837

3.7612500000%

0.00

0.000000000

3.5800000000%

0.000000000

86359B7F2

1-A1A

79,189,000.00

3,875,786.26

0.00

62,805,947.66

205,564.97

66,681,733.92

842.058037467

48.943493067

0.000000000

793.114544400

2.588626800

3.7512500000%

0.00

0.000000000

3.5700000000%

0.000000000

86359B7P0

1-A1B

75,000,000.00

3,670,761.98

0.00

59,483,590.83

194,147.01

63,154,352.81

842.058037093

48.943493734

0.000000000

793.114543358

2.595877694

3.7612500000%

0.00

0.000000000

3.5800000000%

0.000000000

86359B7Q8

1-A1C

9,975,000.00

488,211.35

0.00

7,911,317.57

25,893.88

8,399,528.92

1000.000000000

0.000000000

1000.000000000

4.158333333

4.9900000000%

0.00

0.000000000

4.9900000000%

0.000000000

86359B7G0

1-A2A

15,000,000.00

0.00

15,000,000.00

62,375.00

15,000,000.00

1000.000000000

0.000000000

1000.000000000

4.391666842

5.2700000000%

0.00

0.000000000

5.2700000000%

0.000000000

86359B7R6

1-A2B

28,461,000.00

0.00

28,461,000.00

124,991.23

28,461,000.00

1000.000000000

0.000000000

1000.000000000

4.616666610

5.5400000000%

0.00

0.000000000

5.5400000000%

0.000000000

86359B7H8

1-A3

58,589,000.00

0.00

58,589,000.00

270,485.88

58,589,000.00

1000.000000000

0.000000000

1000.000000000

4.508333333

5.4100000000%

0.00

0.000000000

5.4100000000%

0.000000000

86359B7J4

1-A4A

15,000,000.00

0.00

15,000,000.00

67,625.00

15,000,000.00

1000.000000000

0.000000000

1000.000000000

4.533333562

5.4400000000%

0.00

0.000000000

5.4400000000%

0.000000000

86359B7S4

1-A4B

14,579,000.00

0.00

14,579,000.00

66,091.47

14,579,000.00

933.178958618

18.486414972

0.000000000

914.692543646

3.810480737

4.9000000000%

0.00

0.000000000

4.9000000000%

0.000000000

86359B7K1

2-A1A

163,187,000.00

3,016,742.60

0.00

149,265,932.12

621,820.92

152,282,674.72

933.178958974

18.486415132

0.000000000

914.692543842

3.810480566

4.9000000000%

0.00

0.000000000

4.9000000000%

0.000000000

86359B7T2

2-A1B

25,033,000.00

462,770.43

0.00

22,897,498.45

95,387.76

23,360,268.88

1000.000000000

0.000000000

1000.000000000

3.366944422

4.0912500000%

0.00

0.000000000

3.9100000000%

0.000000000

86359B7L9

12,397,000.00

0.00

12,397,000.00

41,740.01

12,397,000.00

1000.000000000

0.000000000

1000.000000000

3.539166582

4.2912500000%

0.00

0.000000000

4.1100000000%

0.000000000

86359B7M7

9,815,000.00

0.00

9,815,000.00

34,736.92

9,815,000.00

1000.000000000

0.000000000

1000.000000000

4.701666828

5.6412500000%

0.00

0.000000000

5.4600000000%

0.000000000

86359B7N5

10,331,000.00

0.00

10,331,000.00

48,572.92

10,331,000.00

1000.000000000

0.000000000

1000.000000000

142840.900000000

N/A

0.00

14,284.09

142840.900000000

0.0000000000%

0.000000000

9ABSU981

100.00

0.00

100.00

14,284.09

100.00

0.000000000

N/A

0.00

0.000000000

0.0000000000%

0.000000000

9ABSU982

0.00

925.455700661

0.000000000

903.165277586

1.239988408

0.00

)

(0.01

)

(0.000000019

1.6078415299%

0.000000000

9ABSU983

516,556,933.95

0.00

466,536,286.64

640,524.61

478,050,559.24

0.000000000

N/A

0.00

0.000000000

0.0000000000%

0.000000000

9ABSU984

0.00

Page 2 of 23

Notes: (1) N denotes notional balance not included in total (2) Accrued Interest Plus/Minus Interest Adjustment Minus Deferred Interest equals Interest Payment (3) Estimated. * Denotes Controlling Class

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 1000

Next Rate(3)

WAC:
WAMM:
Current Index:
Next Index:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

6.518346%

3.460000%
3.641250%

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Structured Asset Securities Corporation

Mortgage Pass-Through Certificates

Series 2005-7XS

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

345

Bond Payments

Statement Date:

ABN AMRO Acct: 722499.2

Total P&I Payment

0.00

14,284.08

516,556,100.00

478,050,659.25

14,028,514.29

Total

466,536,386.63

11,514,272.62

0.00

2,514,241.67

Page 3 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Statement Date:

Cash Reconciliation Summary

Overcollateralization Deficiency

Overcollateralization Amount

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

2,508,200.50

0.00
0.00

Less Other Adjustment

0.00

Total

2,602,817.34

Unscheduled Interest:

Prepayment Penalties

14,284.09

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

14,284.09

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

PMI Amounts
Interest Due Serv on Advances
Recoup of Prior Advances
Misc. Fees & Expenses

Total Unscheduled Fees &
Expenses

Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Credit Risk Manager's Fees

Misc. Fees

Total

Total Interest Due Certs

Principal Summary

Scheduled Principal:
Current Scheduled Principal
Advanced Scheduled Principal
Scheduled Principal
Unscheduled Principal:
Curtailments
Prepayments in Full
Liquidation Proceeds
Repurchase Proceeds
Other Principal Proceeds
Total Unscheduled Principal
Remittance Principal

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

Overcollateralization Summary

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

2,519,409.37

0.00
0.00
0.00

0.00

276,725.17

14,644.27

291,369.44

50,161.94

11,172,741.22

0.00
0.00
0.00

11,222,903.16
11,514,272.60

14,033,681.97

479,858,508.24

2,357

291,369.44

11,222,903.16

0.00
0.00

0.00

468,344,235.64

2,312

25,944.20

131,017.10

14,644.27

94,616.84

27,188.03

171,061.91

97,692.06

0.00
0.00

3,752.37

101,444.43

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(97,692.06

2,519,409.37

Interest Not Advanced (

Current Period

)

0.00

94,616.84

Less Non Recovered

)

(54,572.04

)

(13,400.44

0.00

1,807,949.00

0.00

Other Principal Information

Principal Remittance Amount
Overcollateralization Release Amount

0.00

Principal Distribution Amount

0.00

Page 4 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Statement Date:

Cash Reconciliation Summary Pool 1

Overcollateralization Deficiency

Overcollateralization Amount

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

1,533,217.56

0.00
0.00

Less Other Adjustment

0.00

Total

1,607,478.77

Unscheduled Interest:

Prepayment Penalties

8,668.09

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

8,668.09

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

PMI Amounts
Interest Due Serv on Advances
Recoup of Prior Advances
Misc. Fees & Expenses

Total Unscheduled Fees &
Expenses

Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Credit Risk Manager's Fees

Misc. Fees

Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

Overcollateralization Summary

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

1,557,117.40

0.00
0.00
0.00

0.00

249,156.01

13,838.92

262,994.93

37,839.87

7,733,924.78

0.00
0.00
0.00

7,771,764.65
8,034,759.58

9,591,876.98

290,852,634.07

1,426

262,994.93

7,771,764.65

0.00
0.00

0.00

282,817,874.49

1,394

25,277.96

119,220.14

13,838.92

74,261.21

25,936.77

144,982.65

59,029.46

0.00
0.00

2,949.62

61,979.08

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(59,029.46

1,557,117.40

Interest Not Advanced (

Current Period

)

0.00

74,261.21

Less Non Recovered

)

(48,498.70

)

(13,180.11

0.00

Other Principal Information

Principal Remittance Amount
Overcollateralization Release Amount

8,034,759.58

0.00

8,034,759.58

Principal Distribution Amount

0.00

Page 5 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Statement Date:

Cash Reconciliation Summary Pool 2

Overcollateralization Deficiency

Overcollateralization Amount

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

974,982.93

0.00
0.00

Less Other Adjustment

0.00

Total

995,338.57

Unscheduled Interest:

Prepayment Penalties

5,616.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

5,616.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

PMI Amounts
Interest Due Serv on Advances
Recoup of Prior Advances
Misc. Fees & Expenses

Total Unscheduled Fees &
Expenses

Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Credit Risk Manager's Fees

Misc. Fees

Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

Overcollateralization Summary

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

962,291.96

0.00
0.00
0.00

0.00

27,569.16

805.35

28,374.51

12,322.07

3,438,816.44

0.00
0.00
0.00

3,451,138.51
3,479,513.02

4,441,804.98

189,005,874.17

931

28,374.51

3,451,138.51

0.00
0.00

0.00

185,526,361.15

918

666.24

11,796.96

805.35

20,355.64

1,251.26

26,079.25

38,662.61

0.00
0.00

802.75

39,465.36

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(38,662.61

962,291.96

Interest Not Advanced (

Current Period

)

0.00

20,355.64

Less Non Recovered

)

(6,073.34

)

(220.33

0.00

Other Principal Information

Principal Remittance Amount
Overcollateralization Release Amount

3,479,513.02

0.00

3,479,513.02

Principal Distribution Amount

0.00

Page 6 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Interest Adjustments Summary

Statement Date:

0.00

Special Servicing Fees

Workout Fees

Liquidation Fees

Legal Fees

0.00

Misc. Fees & Expenses Paid by/to Servicer

Interest Paid to Servicer on Outstanding Advances

0.00

ASER Interest Advance Reduction

Interest Not Advanced (Current Period)

Recoup of Prior Advances by Servicer

0.00

Servicing Fees Paid Servicer on Loans Not Advanced

Misc. Fees & Expenses Paid by Trust

0.00

Shortfall Due to Rate Modification

Total Shortfall Allocated to the Bonds

Total Interest Adjustment to the Bonds

0.00

Shortfall Allocated to the Bonds:

Excess Allocated to the Bonds:

Other Interest Proceeds Due the Bonds

Yield Maintenance Penalties Due the Bonds

Prepayment Penalties Due the Bonds

Recovered ASER Interest Due the Bonds

Recovered Interest Due the Bonds

Less Total Shortfall Allocated to the Bonds

Total Excess Allocated to the Bonds

14,284.09

14,284.09

Total Excess Allocated to the Bonds

14,284.09

0.00

Aggregate Interest Adjustment Allocated to the Bonds

0.00

14,284.09

0.00

Prepayment Interest Excess Due the Bonds

0.00

ARD Excess Interest

0.00

Net Prepayment Int. Shortfalls Allocated to the Bonds

Other Interest Loss

Interest Income

0.00

Page 7 of 23

Structured Asset Securities Corporation

Class

Payment Date:

Prior Payment:

Next Payment:

Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Bond Interest Reconciliation

Additions

Accrual

Method Days

Statement Date:

Accrued

Certificate

Interest

Prior

Int Carry-Fwd

Shortfall

Prior

Shortfall

Reimbursement

Other

Int erest

Proceeds

Other

Int erest

Losses

Current

Int Carry-Fwd

Shortfall

Remaining

Int Carry-Fwd

Shortfall

Net Cap Rate

in Effect

Y/ N

Distributable

Certificate

Int erest

Payment

Amount

Deductions

Outstanding

Deposits from

YM Agreement

Remaining Basis

Risk Carry-Fwd

Shortfall

Current Basis

Risk Carry-Fwd

Shortfall

0.00

205,564.97

Act/360

0.00

205,564.97

0.00

1-A1A

0.00

194,147.01

Act/360

0.00

194,147.01

0.00

1-A1B

0.00

25,893.88

Act/360

0.00

25,893.88

0.00

1-A1C

0.00

62,375.00

30/360

0.00

62,375.00

0.00

1-A2A

0.00

124,991.23

30/360

0.00

124,991.23

0.00

1-A2B

0.00

270,485.88

30/360

0.00

270,485.88

0.00

1-A3

0.00

67,625.00

30/360

0.00

67,625.00

0.00

1-A4A

0.00

66,091.47

30/360

0.00

66,091.47

0.00

1-A4B

0.00

621,820.92

30/360

0.00

621,820.92

0.00

2-A1A

0.00

95,387.76

30/360

0.00

95,387.76

0.00

2-A1B

0.00

41,740.01

Act/360

0.00

41,740.01

0.00

34,736.92

Act/360

0.00

34,736.92

0.00

48,572.92

Act/360

0.00

48,572.92

0.00

14,284.09

30/360

0.00

30/360

0.00

2,447,539.65

640,524.61

30/360

1,807,015.03

640,524.62

0.00

0.01

1,807,015.04

0.00

1,807,015.03

2,499,957.59

4,321,256.71

2,514,241.67

0.00

0.01

1,807,015.04

0.00

(2) Interest Carry-Forward Shortfall is unpaid interest with interest thereon
(3) Basis Risk Carry-Forward Shortfall - difference between LIBOR plus margin and the Net Rate Cap.

Page 8 of 23

(1) Other Interest Proceeds are additional interest amounts specifically allocated to the bond(s) and used in determining the bonds Distributable Interest.

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Bond Principal Reconciliation

Credit Support

Original

Current(4)

Statement Date:

Beginning

Class Balance

Unscheduled

Principal

Payment

Extra

Principal

Payment Amt

Prior

Loss

Reimburs.

Rated

Final

Maturity

Class

Current

Losses

Original

Class Balance

Scheduled

Principal

Payment

Ending

Class Balance

Cumulative

Losses

Interest on

Losses

Additions

Losses

5.00
1.00

1-A1A

4/25/2035

62,805,947.66

0.00

66,681,733.92

79,189,000.00

126,862.80

0.00

3,748,923.46

1-A1B

4/25/2035

59,483,590.83

0.00

63,154,352.81

75,000,000.00

120,151.92

0.00

3,550,610.06

1-A1C

4/25/2035

7,911,317.57

0.00

8,399,528.92

9,975,000.00

15,980.21

0.00

472,231.14

1-A2A

4/25/2035

15,000,000.00

0.00

15,000,000.00

0.00

1-A2B

4/25/2035

28,461,000.00

0.00

28,461,000.00

0.00

1-A3

4/25/2035

58,589,000.00

0.00

58,589,000.00

0.00

1-A4A

4/25/2035

15,000,000.00

0.00

15,000,000.00

0.00

1-A4B

4/25/2035

14,579,000.00

0.00

14,579,000.00

0.00

2-A1A

4/25/2035

149,265,932.12

0.00

152,282,674.72

163,187,000.00

24,600.74

0.00

2,992,141.86

2-A1B

4/25/2035

22,897,498.45

0.00

23,360,268.88

25,033,000.00

3,773.77

0.00

458,996.66

4/25/2035

12,397,000.00

0.00

12,397,000.00

0.00

4/25/2035

9,815,000.00

0.00

9,815,000.00

0.00

4/25/2035

10,331,000.00

0.00

10,331,000.00

0.00

4/25/2035

100.00

0.00

100.00

0.00

4/25/2035

0.00

4/25/2035

466,536,286.64

0.00

478,050,559.24

516,556,933.95

0.00

291,369.44

0.00

11,222,903.17

0.01

516,556,100.00

466,536,386.63

478,050,659.25

Page 9 of 23

(1) Extra Principal Amounts: the lessor of (i) the excess, if any, of the overcollateralization Target Amount over the Overcollateralization Amount.

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Other Related Information

Statement Date:

$5,167.69

Certificate Insurance Premium

Insured Payments to Class:

0.00

$0.00

Prior Unpaid Certificate Insurance Premium

Aggregate Certificate Insurance Premium

$5,167.69

1-A2A

1-A3

1-A4A

Page 10 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part I

Distribution

Date

REO

Balance

Statement Date:

Foreclosure

Delinq 3+ Months

Delinq 2 Months

Delinq 1 Month

Current

Balance

Delinquency Aging Categories

0.48%

0.43%

0.09%

0.06%

0.00%

0.43%

0.46%

0.00%

25-Aug-05

2,028,117

298,534

2,137,514

2,289

463,880,071

99.01%

99.05%

0.47%

0.45%

0.13%

0.14%

0.00%

0.08%

0.10%

0.00%

25-Jul-05

2,165,493

649,860

487,819

2,341

476,555,336

99.32%

99.31%

0.38%

0.46%

0.04%

0.01%

0.00%

0.08%

0.11%

0.00%

27-Jun-05

2,247,519

71,129

554,472

2,385

485,834,255

99.50%

99.41%

0.08%

0.06%

0.04%

0.08%

0.00%

25-May-05

302,163

395,921

2,448

499,585,474

99.88%

99.86%

0.00%

25-Apr-05

2,489

509,668,315

100.00%

Page 11 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part I

Distribution

Date

REO

Balance

Statement Date:

Foreclosure

Delinq 3+ Months

Delinq 2 Months

Delinq 1 Month

Current

Balance

Delinquency Aging Categories

Pool 1

0.65%

0.60%

0.14%

0.11%

0.00%

0.72%

0.76%

0.00%

25-Aug-05

1,691,132

298,534

2,137,514

1,373

278,690,695

98.49%

98.54%

0.77%

0.74%

0.21%

0.22%

0.00%

0.14%

0.17%

0.00%

25-Jul-05

2,165,493

649,860

487,819

1,410

287,549,462

98.88%

98.86%

0.48%

0.58%

0.07%

0.02%

0.00%

0.14%

0.19%

0.00%

27-Jun-05

1,720,646

71,129

554,472

1,442

295,250,461

99.31%

99.21%

0.07%

0.05%

0.07%

0.13%

0.00%

25-May-05

159,063

395,921

1,482

303,685,462

99.87%

99.82%

0.00%

25-Apr-05

1,507

310,335,488

100.00%

Page 12 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part I

Distribution

Date

REO

Balance

Statement Date:

Foreclosure

Delinq 3+ Months

Delinq 2 Months

Delinq 1 Month

Current

Balance

Delinquency Aging Categories

Pool 2

0.22%

0.18%

0.00%

25-Aug-05

336,984

916

185,189,377

99.78%

99.82%

0.00%

25-Jul-05

931

189,005,874

100.00%

0.21%

0.28%

0.00%

27-Jun-05

526,873

943

190,583,794

99.79%

99.72%

0.10%

0.07%

0.00%

25-May-05

143,100

966

195,900,012

99.90%

99.93%

0.00%

25-Apr-05

982

199,332,827

100.00%

Page 13 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Distribution

Date

Statement Date:

Current 31 - 60 Days 61 - 90 Days

90 + Days

# Balance # Balance # Balance

# Balance

Current 31 - 60 Days 61 - 90 Days

90 + Days

# Balance # Balance

# Balance

In Foreclosure and Delinquent

In Bankruptcy and Delinquent

In REO and Delinquent

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part II

Current

31 - 60 Days

61 - 90 Days

90 + Days

Balance

25-Aug-05

1,001,273

704,890

1,136,241

0.00%

0.22%

0.21%

0.22%

0.24%

0.09%

0.15% 0.00%

0.00% 0.00%

0.00%

-0.00%

0.26%

0.17%

812,888

0.00%

25-Jul-05

92,577

71,020

395,242

0.00%

0.04%

0.02%

0.04%

0.08%

0.04%

0.01% 0.00%

0.00% 0.00%

0.00%

0.25%

0.16%

781,519

0.00%

27-Jun-05

158,890

71,129

395,582

0.00%

0.04%

0.03%

0.04%

0.08%

0.00%

0.00% 0.04%

0.01% 0.00%

0.00%

0.17%

0.12%

603,719

0.00%

25-May-05

0.00%

0.00% 0.00%

0.00%

0.12%

0.09%

425,774

0.00%

25-Apr-05

0.00%

0.00% 0.00%

0.00%

Page 14 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Distribution

Date

Statement Date:

Current 31 - 60 Days 61 - 90 Days

90 + Days

# Balance # Balance # Balance

# Balance

Current 31 - 60 Days 61 - 90 Days

90 + Days

# Balance # Balance

# Balance

In Foreclosure and Delinquent

In Bankruptcy and Delinquent

In REO and Delinquent

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part II - Pool 1

Current

31 - 60 Days

61 - 90 Days

90 + Days

Balance

25-Aug-05

1,001,273

704,890

1,136,241

0.00%

0.36%

0.35%

0.36%

0.40%

0.14%

0.25% 0.00%

0.00% 0.00%

0.00%

-0.00%

0.36%

0.22%

634,488

0.00%

25-Jul-05

92,577

71,020

395,242

0.00%

0.07%

0.03%

0.07%

0.14%

0.07%

0.02% 0.00%

0.00% 0.00%

0.00%

0.28%

0.17%

495,702

0.00%

27-Jun-05

158,890

71,129

395,582

0.00%

0.07%

0.05%

0.07%

0.13%

0.00%

0.00% 0.07%

0.02% 0.00%

0.00%

0.14%

0.11%

317,784

0.00%

25-May-05

0.00%

0.00% 0.00%

0.00%

0.13%

0.10%

318,122

0.00%

25-Apr-05

0.00%

0.00% 0.00%

0.00%

Page 15 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Distribution

Date

Statement Date:

Current 31 - 60 Days 61 - 90 Days

90 + Days

# Balance # Balance # Balance

# Balance

Current 31 - 60 Days 61 - 90 Days

90 + Days

# Balance # Balance

# Balance

In Foreclosure and Delinquent

In Bankruptcy and Delinquent

In REO and Delinquent

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary Part II - Pool 2

Current

31 - 60 Days

61 - 90 Days

90 + Days

Balance

25-Aug-05

0.00%

0.00% 0.00%

0.00%

0.11%

0.10%

178,400

0.00%

25-Jul-05

0.00%

0.00% 0.00%

0.00%

0.21%

0.15%

285,817

0.00%

27-Jun-05

0.00%

0.00% 0.00%

0.00%

0.21%

0.15%

285,935

0.00%

25-May-05

0.00%

0.00% 0.00%

0.00%

0.10%

0.05%

107,652

0.00%

25-Apr-05

0.00%

0.00% 0.00%

0.00%

Page 16 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary

Distribution

Date

Ending Pool (1)

Payoffs(2)

Realized Losses (2)

Remaining Term

Curr Weighted Avg.

# Balance

# Amount

Life

Coupon Remit

Statement Date:

Ending Arrearage (1)

Balance

Insurance

Substitution

Liquidation

Proceeds

25-Aug-05

2,312

91.60%

468,344,236

90.67%

1.91%

2.33%

0.00%

345

6.52%

6.26%

11,172,741

0.00

25-Jul-05

2,357

93.38%

479,858,508

92.90%

1.67%

1.74%

0.00%

346

6.52%

6.27%

8,487,066

0.00

27-Jun-05

2,397

94.97%

488,707,374

94.61%

2.20%

2.24%

0.00%

346

6.53%

6.27%

11,198,516

0.00

25-May-05

2,451

97.11%

500,283,558

96.85%

1.53%

1.76%

0.00%

347

6.53%

6.28%

8,991,550

0.00

25-Apr-05

2,489

98.61%

509,668,315

98.67%

1.39%

1.27%

0.00%

347

6.54%

6.28%

6,535,971

0.00

(1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period.

Page 17 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary

Distribution

Date

Ending Pool (1)

Payoffs(2)

Realized Losses (2)

Remaining Term

Curr Weighted Avg.

# Balance

# Amount

Life

Coupon Remit

Statement Date:

Ending Arrearage (1)

Balance

Insurance

Substitution

Liquidation

Proceeds

Pool 1

25-Aug-05

1,394

55.23%

282,817,874

54.75%

2.24%

2.66%

0.00%

340

6.64%

6.39%

7,733,925

0.00

25-Jul-05

1,426

56.50%

290,852,634

56.31%

1.79%

2.16%

0.00%

340

6.65%

6.39%

6,423,102

0.00

27-Jun-05

1,452

57.53%

297,596,707

57.61%

2.16%

2.08%

0.00%

340

6.65%

6.39%

6,319,367

0.00

25-May-05

1,484

58.80%

304,240,446

58.90%

1.53%

1.85%

0.00%

340

6.66%

6.40%

5,754,359

0.00

25-Apr-05

1,507

59.71%

310,335,488

60.08%

1.57%

1.60%

0.00%

340

6.66%

6.40%

5,040,510

0.00

(1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period.

Page 18 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary

Distribution

Date

Ending Pool (1)

Payoffs(2)

Realized Losses (2)

Remaining Term

Curr Weighted Avg.

# Balance

# Amount

Life

Coupon Remit

Statement Date:

Ending Arrearage (1)

Balance

Insurance

Substitution

Liquidation

Proceeds

Pool 2

25-Aug-05

918

36.37%

185,526,361

35.92%

1.40%

1.82%

0.00%

354

6.32%

6.07%

3,438,816

0.00

25-Jul-05

931

36.89%

189,005,874

36.59%

1.48%

1.08%

0.00%

355

6.33%

6.08%

2,063,964

0.00

27-Jun-05

945

37.44%

191,110,667

37.00%

2.28%

2.49%

0.00%

356

6.34%

6.09%

4,879,149

0.00

25-May-05

967

38.31%

196,043,112

37.95%

1.53%

1.62%

0.00%

357

6.34%

6.09%

3,237,191

0.00

25-Apr-05

982

38.91%

199,332,827

38.59%

1.11%

0.74%

0.00%

358

6.34%

6.09%

1,495,461

0.00

(1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period.

Page 19 of 23

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Realized Loss Detail

Period

Disclosure

Control #

Appraisal

Date

Appraisal

Value

Beginning

Scheduled

Balance

Gross

Proceeds

Gross Proceeds

as a % of

Sched. Balance

Aggregate

Liquidation

Expenses *

Net

Liquidation

Proceeds

Net Proceeds

as a % of

Sched. Balance

Realized

Loss

Statement Date:

Current Total

Cumulative

Page 20 of 23

* Aggregate liquidation expenses also include outstanding P&I advances and unpaid servicing fees, unpaid trustee fees, etc..

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Realized Loss Detail

Period

Disclosure

Control #

Appraisal

Date

Appraisal

Value

Beginning

Scheduled

Balance

Gross

Proceeds

Gross Proceeds

as a % of

Sched. Balance

Aggregate

Liquidation

Expenses *

Net

Liquidation

Proceeds

Net Proceeds

as a % of

Sched. Balance

Realized

Loss

Statement Date:

Pool 1

Current Total

Cumulative

Page 21 of 23

* Aggregate liquidation expenses also include outstanding P&I advances and unpaid servicing fees, unpaid trustee fees, etc..

Structured Asset Securities Corporation

Payment Date:
Prior Payment:
Next Payment:
Record Date:

25-Aug-05
25-Aug-05

25-Jul-05

26-Sep-05

24-Aug-05

Mortgage Pass-Through Certificates

Series 2005-7XS

ABN AMRO Acct: 722499.2

Realized Loss Detail

Period

Disclosure

Control #

Appraisal

Date

Appraisal

Value

Beginning

Scheduled

Balance

Gross

Proceeds

Gross Proceeds

as a % of

Sched. Balance

Aggregate

Liquidation

Expenses *

Net

Liquidation

Proceeds

Net Proceeds

as a % of

Sched. Balance

Realized

Loss

Statement Date:

Pool 2

Current Total

Cumulative

Page 22 of 23

* Aggregate liquidation expenses also include outstanding P&I advances and unpaid servicing fees, unpaid trustee fees, etc..

Structured Asset Securities Corporation

Substitution Detail History

ABN AMRO Acct: 722499.2

Series 2005-7XS

Mortgage Pass-Through Certificates

24-Aug-05

26-Sep-05

25-Jul-05

25-Aug-05

Record Date:

Next Payment:

Prior Payment:

Payment Date:

Statement Date:

Property ID

Deleted Loan

Qualified Substitute

Scheduled Prin Bal

Page 23 of 23

Original Property

Per Section 7.01(a)(i) of the Property Management and Lease Servicing Agreement, aggregate Appraised Value of the Qualified Substitute Mortgaged Properties acquired by the
Issuer since the Closing Date in connection with the substitution or exchange pursuant to Section 7.01 is not to exceed 25% of the aggregate Initial Appraised Value of the
Mortgaged Properties.

(A)

Structured Asset Securities Corp. Mortgage Loan Trust 2005-7XS 8-K