IXIS FINANCIAL PRODUCTS INC.

9 West 57th Street, 36th Floor

New York, New York 10019

Fax: (212) 891-0660 / Phone: (212) 891-6298 / 6194

DATE:

September 29, 2006

TO:	Supplemental Interest Trust, Structured Asset Securities Corporation Mortgage Pass-Through Certificates, Series 2006-WF3 c/o U.S. Bank National Association 1 Federal Street, 3^rd Floor Boston, Massachusetts 02110 Attention: Structured Finance - SASCO 2006-WF3 ("Party B")

FROM:

IXIS Financial Products Inc. (“Party A”)

RE:	Swap Transaction

Dear Sir or Madam:

The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the transaction entered into between us on the Trade Date specified below (the “Transaction”).

The definitions and provisions contained in the 2000 ISDA Definitions as published by the International Swaps and Derivatives Association, Inc. are incorporated into this Confirmation. In the event of any inconsistency between those definitions and provisions and this Confirmation, this Confirmation will govern.

This Confirmation constitutes a “Confirmation” as referred to in, and supplements, forms part of and is subject to, the ISDA Master Agreement dated as of September 29, 2006, as amended and supplemented from time to time (the “Agreement”) between Party A and Party B. All provisions contained in the Agreement govern this Confirmation except as expressly modified below.

1.	The Swap Transaction to which this Confirmation relates is a Rate Swap Transaction, the terms of which are as follows:

	General Terms
	Trade Date:		September 20, 2006
	Effective Date:		October 25, 2006, subject to adjustment in accordance with the Following Business Day Convention
	Termination Date:		September 25, 2011, subject to adjustment in accordance with the Following Business Day Convention
	Notional Amount:		See Amortization Schedule, Schedule A

	Fixed Amounts:
	Fixed Rate Payer:		Party B
	Fixed Rate Payer Period End Dates:		The 25^th day of each month of each year, commencing on November 25, 2006 to and including the Termination Date, subject to adjustment in accordance with the Following Business Day Convention.
	Fixed Rate Payer Payment Dates:		Early Payment, one (1) Business Day preceding each Fixed Rate Payer Period End Date.
	Fixed Rate:		See Amortization Schedule, Schedule A
	Fixed Rate Day Count Fraction:		Actual/360

	Floating Amounts:
	Floating Rate Payer:		Party A
	Floating Rate Payer Period End Dates:		The 25^th day of each month of each year, commencing on November 25, 2006 to and including the Termination Date, subject to adjustment in accordance with the Following Business Day Convention.
	Floating Rate Payer Payment Dates:		Early Payment, one (1) Business Day preceding each Floating Rate Payer Period End Date.
	Floating Rate Option:		USD-LIBOR-BBA
	Designated Maturity:		One month
	Spread:		None
	Floating Rate Day Count Fraction:		Actual/360
	Reset Dates:		The first day of each Calculation Period.
	Compounding:		Inapplicable
	Business Day:		Any day other than (i) a Saturday or a Sunday, or (ii) a day on which banking institutions in (1) the city in which the Corporate Trust Office of Party B is located or (2) the States of New York, Maryland, Massachusetts, Minnesota or Colorado are closed.
	Floating Rate Payer Upfront Payment:		$3,607,000. Party A shall pay Lehman Brothers Holdings Inc. on behalf of Party B the Floating Rate Payer Upfront Payment on or prior to September 29, 2006, subject to adjustment in accordance with the Following Business Day Convention.

2.	Procedural Terms:
	Calculation Agent:	Party A
	Offices:	The Office of Party A for the Swap Transaction is New York
	Account Details:
	Upfront Swap Payment:	Chase NYC ABA 021000021 a/c LBI - Lehman Brothers Holdings a/c 066206677 Reference: SASCO 2006-WF3 Upfront Swap Payment
	Payments to Party A:	CITIBANK N.A. ABA# 021-000-089 Account No.: 36216161 A/C IXISFP
	Payments to Party B:	U.S. Bank Corporate Trust Services ABA# 091-000-022 U.S. Bank Trust N.A. DDA# 173-103-321-118 Ref: SASCO 2006-WF3 // Interest Rate Swap Account

Please confirm that the foregoing correctly sets forth the terms and conditions of our agreement by executing this Confirmation and returning it to us by facsimile to:

IXIS Financial Products Inc.

(212) 891-0660 (fax)

Attn: Swap Operations

IXIS FINANCIAL PRODUCTS INC.

By: _/s/ Vasanth K Victor________________________

Authorized Signatory

By: _/s/ Christopher Hayden______________________

Authorized Signatory

Accepted and confirmed as of the Trade Date written above:

SUPPLEMENTAL INTEREST TRUST,

STRUCTURED ASSET SECURITIES CORPORATION

MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 2006-WF3

By: U.S. Bank National Association, not in its individual capacity, but solely as Trustee

By:_/s/ James H Byrnes_______________________

Name: James H Byrnes

Title: Vice President

SCHEDULE A to the Confirmation dated as of September 29, 2006,

Re: Reference Number 342174CF

Amortization Schedule, subject to adjustment in accordance with the Following Business Day Convention

From and including	To but excluding	Notional Amount (USD)	Fixed Rate (%)
September 25, 2006	October 25, 2006	0.00	0.00
October 25, 2006	November 25, 2006	1,333,306,000.00	5.50
November 25, 2006	December 25, 2006	1,292,529,000.00	5.54
December 25, 2006	January 25, 2007	1,252,964,000.00	5.54
January 25, 2007	February 25, 2007	1,214,573,000.00	5.48
February 25, 2007	March 25, 2007	1,177,322,000.00	5.46
March 25, 2007	April 25, 2007	1,141,179,000.00	5.43
April 25, 2007	May 25, 2007	1,106,110,000.00	5.39
May 25, 2007	June 25, 2007	1,072,084,000.00	5.35
June 25, 2007	July 25, 2007	1,039,071,000.00	5.31
July 25, 2007	August 25, 2007	1,007,039,000.00	5.26
August 25, 2007	September 25, 2007	975,960,000.00	5.22
September 25, 2007	October 25, 2007	943,343,000.00	5.18
October 25, 2007	November 25, 2007	911,133,000.00	5.14
November 25, 2007	December 25, 2007	879,793,000.00	5.12
December 25, 2007	January 25, 2008	846,531,000.00	5.10
January 25, 2008	February 25, 2008	810,310,000.00	5.06
February 25, 2008	March 25, 2008	774,587,000.00	5.04
March 25, 2008	April 25, 2008	739,423,000.00	5.03
April 25, 2008	May 25, 2008	704,870,000.00	5.03
May 25, 2008	June 25, 2008	670,985,000.00	5.02
June 25, 2008	July 25, 2008	637,812,000.00	5.02
July 25, 2008	August 25, 2008	605,400,000.00	5.03
August 25, 2008	September 25, 2008	573,790,000.00	5.02
September 25, 2008	October 25, 2008	464,857,000.00	5.02
October 25, 2008	November 25, 2008	406,311,000.00	5.03
November 25, 2008	December 25, 2008	355,139,000.00	5.04
December 25, 2008	January 25, 2009	316,236,000.00	5.05
January 25, 2009	February 25, 2009	285,904,000.00	5.06
February 25, 2009	March 25, 2009	261,822,000.00	5.07
March 25, 2009	April 25, 2009	242,452,000.00	5.08
April 25, 2009	May 25, 2009	226,727,000.00	5.09
May 25, 2009	June 25, 2009	213,893,000.00	5.11
June 25, 2009	July 25, 2009	203,392,000.00	5.12
July 25, 2009	August 25, 2009	193,407,000.00	5.13
August 25, 2009	September 25, 2009	183,915,000.00	5.14
September 25, 2009	October 25, 2009	174,888,000.00	5.15
October 25, 2009	November 25, 2009	166,305,000.00	5.16
November 25, 2009	December 25, 2009	158,141,000.00	5.17
December 25, 2009	January 25, 2010	150,378,000.00	5.18
January 25, 2010	February 25, 2010	142,995,000.00	5.19
February 25, 2010	March 25, 2010	135,975,000.00	5.20
March 25, 2010	April 25, 2010	129,299,000.00	5.21

From and including	To but excluding	Notional Amount (USD)	Fixed Rate (%)
April 25, 2010	May 25, 2010	122,947,000.00	5.22
May 25, 2010	June 25, 2010	116,911,000.00	5.23
June 25, 2010	July 25, 2010	111,168,000.00	5.24
July 25, 2010	August 25, 2010	105,708,000.00	5.25
August 25, 2010	September 25, 2010	100,516,000.00	5.26
September 25, 2010	October 25, 2010	95,577,000.00	5.27
October 25, 2010	November 25, 2010	90,882,000.00	5.28
November 25, 2010	December 25, 2010	86,416,000.00	5.30
December 25, 2010	January 25, 2011	82,170,000.00	5.31
January 25, 2011	February 25, 2011	78,132,000.00	5.32
February 25, 2011	March 25, 2011	74,291,000.00	5.32
March 25, 2011	April 25, 2011	70,640,000.00	5.33
April 25, 2011	May 25, 2011	67,167,000.00	5.33
May 25, 2011	June 25, 2011	63,866,000.00	5.34
June 25, 2011	July 25, 2011	60,724,000.00	5.34
July 25, 2011	August 25, 2011	57,736,000.00	5.34
August 25, 2011	September 25, 2011	54,886,000.00	5.34

SASCO 2006-WF3 8-K