42 U.S. Code § 3535 - Administrative provisions
(k)Gifts and services, acceptance; taxable status of property; investments; disbursements
(1) The Secretary is authorized to accept and utilize voluntary and uncompensated services and accept, hold, administer, and utilize gifts and bequests of property, both real and personal, for the purpose of aiding or facilitating the work of the Department. Gifts and bequests of
money and the proceeds from sales of other property received as gifts or bequests shall be deposited in the Treasury in a separate fund and shall be disbursed upon order of the Secretary. Property accepted pursuant to this paragraph, and the proceeds thereof, shall be used as nearly as possible in accordance with the terms of the gift or bequest. (2) For the purpose of
Federal income, estate,
and gift taxes, property accepted under paragraph (1) shall be considered as a gift or bequest to or for use of the United States.
(3) Upon the request of the Secretary, the Secretary of the Treasury may
invest and reinvest in securities of the United States or in securities guaranteed as to principal and interest by the United States any moneys contained in the fund provided for in paragraph (1). Income accruing from such securities and from any other property held by the Secretary pursuant to paragraph (1) shall be deposited to the credit of the fund and shall
be disbursed upon order of the Secretary.
31 U.S. Code § 321 - General authority of the Secretary
(d)
(1) The Secretary of the Treasury may
accept, hold, administer, and use gifts and bequests of property, both real and personal, for the purpose of aiding or facilitating the work of the Department of the Treasury. Gifts and bequests of money and the proceeds from sales of other property received as gifts or bequests shall be deposited in the Treasury in a separate fund and shall be disbursed on order of the Secretary of the Treasury. Property accepted under this paragraph, and the proceeds thereof, shall be used as nearly as
possible in accordance with the terms of the gift or bequest.
(2) For purposes of the Federal income, estate, and gift taxes, property accepted under paragraph (1) shall be considered as a gift or bequest to or for the use of the United States.
31 U.S.C. § 3124 - Exemption from taxation
(a) Stocks and obligations of the United States Government are exempt from taxation
by a State or political subdivision of a State. The exemption applies to each form of taxation that would require the obligation, the interest on the obligation, or both, to be considered in computing a tax, except—
(1) a nondiscriminatory franchise tax or another nonproperty tax instead of a franchise tax, imposed on a corporation; and
(2) an estate or inheritance tax.
18 U.S.C. § 8 - Obligation or other security of the United States defined
The term “obligation or other security of the United States” includes all bonds, certificates of
indebtedness, national bank currency, Federal Reserve notes, Federal Reserve bank notes, coupons, United States notes, Treasury notes, gold certificates, silver certificates, fractional notes, certificates of deposit, bills, checks, or drafts for money, drawn by or upon authorized officers of the United States, stamps and other representatives of value, of whatever denomination, issued under any Act of Congress, and canceled United States stamps.
(June 25, 1948, ch. 645, 62 Stat. 685.)
Publication 6209: Automatic Data Processing
Form W-2: Code 5
Form W-9: Request for Taxpayer Identification Number and certificate
Form 1099: Code 5
Form 1040: Code 2 & 6
Code 2 Individual Income Tax, Fiduciary Income Tax, Partnership return and
Code 5 Information Return Processing (IRP), Estate and Gift Tax
Code 6 NMF (Non–Master File)