Berkshire Hathaways Annual Report on Form 10-K for the year ended December 31, 2004

EXHIBIT 4.12

BERKSHIRE HATHAWAY FINANCE CORPORATION

OFFER TO EXCHANGE

$800,000,000 principal amount of its Floating Rate Senior Notes Due 2008

unconditionally guaranteed by Berkshire Hathaway Inc., which have been registered

under the Securities Act of 1933, for any and all Floating Rate Senior Notes

Due 2008, unconditionally guaranteed by Berkshire Hathaway Inc.

Instructions from Beneficial Owner

      The undersigned acknowledge(s) receipt of your letter and the enclosed Prospectus and the related Letter of Transmittal in connection with the offer by the Company to exchange the Exchange Notes for Outstanding Notes.

      This will instruct you to tender the principal amount of Outstanding Notes indicated below held by you for the account of the undersigned, upon the terms and subject to the conditions set forth in the Prospectus and the related Letter of Transmittal.

      The undersigned represents that (i) the Exchange Notes acquired pursuant to the Exchange Offer are being obtained in the ordinary course of the undersigned’s business, (ii) the undersigned is not engaging, does not intend to engage, and has no arrangement or understanding with any person to participate in the distribution of such Exchange Notes, (iii) the undersigned is not an “affiliate,” as defined under Rule 405 of the Securities Act, of the Company and (iv) the undersigned is not acting on behalf of any person or entity that could not truthfully make these statements. If the undersigned is a broker-dealer, it acknowledges that it will deliver a copy of the Prospectus in connection with any resale of the Exchange Notes.