Filed Under Rule 424(b)(3), Registration Statement No. 333-155631
Pricing Supplement Number 181 Dated 03/16/2009
(To: Prospectus Dated November 24, 2008 and Prospectus Supplement Dated: November 26, 2008)
 

CUSIP  Number

Principal Amount

Selling Price

Gross Concession

Net Proceeds

Coupon Type

Coupon Rate

Coupon Frequency

Maturity Date

1st Coupon Date

1st Coupon Amount

Survivor's Option

Product Ranking

Moody's Rating

S & P Rating

Fitch Rating

63743FKN5

[ ]

100.000%

0.425%

[ ]

FIXED

3.850%

SEMI-ANNUAL

09/15/2010

09/15/2009

$18.07

YES

Senior Unsecured Notes

A2

A

A

Redemption Information: Non-Callable.
 

CUSIP  Number

Principal Amount

Selling Price

Gross Concession

Net Proceeds

Coupon Type

Coupon Rate

Coupon Frequency

Maturity Date

1st Coupon Date

1st Coupon Amount

Survivor's Option

Product Ranking

Moody's Rating

S & P Rating

Fitch Rating

63743FKP0

[ ]

100.000%

0.825%

[ ]

FIXED

4.500%

SEMI-ANNUAL

03/15/2012

09/15/2009

$21.13

YES

Senior Unsecured Notes

A2

A

A

Redemption Information: Non-Callable.
 

National Rural Utilities Cooperative Finance Corp   Offering Dates: March 16, 2009 through March 23, 2009
Trade Date: Monday, March 23, 2009 @12:00 PM ET
Settle Date: Thursday, March 26, 2009 
Minimum Denomination/Increments: $1,000.00/$1,000.00
Initial trades settle flat and clear SDFS: DTC Book Entry only
DTC number: 0235 via RBC Dain Rauscher Inc. Agents: Banc of America Securities LLC, Incapital, LLC , Charles Schwab & Co., Inc., Comerica Securities, Edward D. Jones & Co., L.P., J.J.B. Hilliard, W.L. Lyons, Inc., Merrill Lynch & Co., Morgan Stanley, UBS Securities LLC   If the maturity date or an interest payment date for any note is not a Business Day (as term is defined in Prospectus), principal, premium, if any, and interest for that note is paid on the next Business Day, and no interest will accrue from, and after, the maturity date or interest payment date.   InterNotes® is a registered trademark of Incapital Holdings LLC.  All rights reserved   National Rural Utilities
Cooperative Finance Corporation
InterNotes
Prospectus Dated 24-Nov-08 and Prospectus Supplement Dated: 26-Nov-08