26 U.S. Code § 6311 - Payment of tax by commercially acceptable means
It shall be lawful for the Secretary to receive for internal revenue taxes (or in payment for internal revenue stamps) any commercially acceptable means that the Secretary deems appropriate to the extent and under the conditions provided in regulations prescribed by the Secretary.
If a check, money order, or other method of payment, including payment by credit card, debit card, or charge card so received is not duly paid, or is paid and subsequently charged back to the Secretary, the person by whom such check, or money order, or other method of payment has been tendered shall remain liable for the payment of the tax or for the stamps, and for all legal penalties and additions, to the same extent as if such check, money order, or other method of payment had not been tendered.
Notwithstanding section 3718(f) of title 31, United States Code, the Secretary is authorized to enter into contracts to obtain services related to receiving payment by other means where cost beneficial to the Government. The Secretary may not pay any fee or provide any other consideration under any such contract for the use of credit, debit, or charge cards for the payment of taxes imposed by subtitle A.
Except as otherwise authorized by this subsection, no person may use or disclose any information relating to credit or debit card transactions obtained pursuant to section 6103(k)(9) other than for purposes directly related to the processing of such transactions, or the billing or collection of amounts charged or debited pursuant thereto.
Use and disclosure of information under this paragraph shall be made only to the extent authorized by written procedures promulgated by the Secretary.
 See References in Text note below.
Section 103(f) of the Truth in Lending Act, referred to in subsec. (d)(3)(D), was redesignated section 103(g) of the Truth in Lending Act by Pub. L. 111–203, title X, § 1100A(1)(A), July 21, 2010, 124 Stat. 2107.
1998—Subsec. (d)(2). Pub. L. 105–277 substituted “under any such contract for the use of credit, debit, or charge cards for the payment of taxes imposed by subtitle A” for “under such contracts”.
Subsec. (e)(1). Pub. L. 105–206 substituted “section 6103(k)(9)” for “section 6103(k)(8)”.
1997—Pub. L. 105–34 amended section catchline and text generally, substituting provisions relating to payment of tax by commercially acceptable means for provisions consisting of subsecs. (a) and (b) relating to payment by check or money order and liability if a check or money order received is not duly paid.
1984—Subsec. (b)(2). Pub. L. 98–369 substituted “or cashier’s check (or other guaranteed draft)” for “or cashier’s check”, “the amount of such check (or draft)” for “the amount of such check”, and “the financial institution” for “the bank or trust company”, and substituted “such financial institution” for “such bank” in two places.
1976—Subsec. (a). Pub. L. 94–455 struck out “or his delegate” after “Secretary” wherever appearing.
Amendment by Pub. L. 105–277 effective as if included in the provision of the Taxpayer Relief Act of 1997, Pub. L. 105–34, to which such amendment relates, see section 4003(l) of Pub. L. 105–277, set out as a note under section 86 of this title.
Amendment by Pub. L. 105–206 effective, except as otherwise provided, as if included in the provisions of the Taxpayer Relief Act of 1997, Pub. L. 105–34, to which such amendment relates, see section 6024 of Pub. L. 105–206, set out as a note under section 1 of this title.