Pricing Supplement Dated September 22, 2011
(To Offering Circular dated April 08, 2011)

Universal Debt Facility

This Pricing Supplement relates to the Debt Securities described below (the "Notes"). You should read it together with the Offering Circular dated April 08, 2011 (the "Offering Circular"), relating to the Universal Debt Facility of the Federal National Mortgage Association ("Fannie Mae"). Unless defined below, capitalized terms have the meanings we gave to them in the Offering Circular.

The Notes, and interest thereon, are not guaranteed by the United States and do not constitute a debt or obligation of the United States or of any agency or instrumentality thereof other than Fannie Mae.

Certain Securities Terms

1. Title: Step Rate Notes Due October 12, 2017

2. Form: Fed Book-Entry Securities

3. Specified Payment Currency

a. Interest: U.S. dollars

b. Principal: U.S. dollars

4. Aggregate Original Principal Amount: $50,000,000.00 

5. Issue Date: October 12, 2011

6. Maturity Date: October 12, 2017

Amount Payable on the Maturity Date: 100.00% of principal amount

7. Subject to Redemption Prior to Maturity Date
__ No
Yes; in whole or in part, at our option, on October 12, 2012 at a redemption price of 100% of the principal amount redeemed, plus accrued interest thereon to the date of redemption.

8. Interest Category: Step Rate Securities

9. Interest

a. Frequency of Interest Payments: semiannually

b. Interest Payment Dates: the 12th day of each April and October 

c. First Interest Payment Date: April 12, 2012

d The interest rate on the outstanding principal amount will be as follows:

from and including to but excluding interest rate per annum

October 12, 2011 October 12, 2012 0.75%
October 12, 2012 October 12, 2017 2.00%

Additional Information Relating to the Notes

1. Identification Number(s)

a. CUSIP: 3136FTAD1

b. ISIN: N/A

c. Common Code: N/A

2. Listing Application
X No
__ Yes

3. Eligibility for Stripping on the Issue Date
X No
__ Yes
___ Minimum Principal Amount: _____________

Offering

1. Pricing Date: September 22, 2011

2. Method of Distribution:  X Principal __ Non-underwritten

3. The following dealers have agreed, jointly and severally, to purchase all of the Notes:

BMO Capital Markets Corp.
Cantor Fitzgerald
Vining-Sparks IBG, Limited Partnership

a. Representative(s): BMO Capital Markets Corp.

b. Stabilizing Manager: BMO Capital Markets Corp.

4. Offering Price:
Fixed Offering Price: 100.00% of principal amount, plus accrued interest, if any, from the Settlement Date
__ Variable Price Offering

5. Dealer Purchase Price: 99.55% of principal amount

a. Concession: N/A

b. Reallowance: N/A

6. Proceeds to Fannie Mae: $49,775,000.00 

Settlement

1. Settlement Date:  October 12, 2011

2. Settlement Basis:  delivery versus payment

3. Settlement Clearing System: U.S. Federal Reserve Banks

RECENT DEVELOPMENTS

Ratings Matters

Standard and Poor’s Ratings Services

On August 8, 2011, Standard and Poor’s Ratings Services (“Standard & Poor’s”) announced that they had downgraded Fannie Mae senior unsecured long term debt from “AAA” to “AA+” with a negative outlook.  This announcement followed a similar action by Standard & Poor’s taken on August 5, 2011 on the United States sovereign long term debt rating.  Standard & Poor’s also announced that Fannie Mae’s debt ratings were no longer on CreditWatch Negative, and that the ratings on Fannie Mae short-term debt and subordinated debt remain unchanged at “A-1+” and “A”, respectively.

The action taken by Standard & Poor’s with respect to Fannie Mae’s ratings was announced at the same time as similar ratings actions on other institutions with ties to the United States Government, including Freddie Mac, select Federal Home Loan Banks, and the Farm Credit System.

Moody’s Investors Service

On August 2, 2011, Moody’s Investors Service (“Moody’s”) confirmed the Aaa rating of institutions directly linked to the United States Government, including Fannie Mae.  Moody’s also announced that the rating outlook for Fannie Mae and other institutions directly linked to the United States Government was being revised to negative, following a similar revision on the outlook of the United States Government.

Fitch Ratings Limited

On August 16, 2011, Fitch Ratings Limited (“Fitch”) affirmed the long-term issuer default rating and senior unsecured debt rating of Fannie Mae at ‘AAA’, with a Ratings Outlook of Stable, following a similar affirmation of the United States sovereign rating.  Fitch has previously indicated that the ratings of Fannie Mae and other issuers with ties to the United States Government would ultimately be aligned with the United States sovereign rating assigned by Fitch.

For additional information on the impacts of a credit rating downgrade on Fannie Mae and its securities, please refer to our Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2011, including the Risk Factors set forth therein.