27 CFR § 555.51
Duration of license or permit
April 24, 2020
(a) [Reserved]
(b) On and after May 24, 2003.
(1) An original license or user permit is issued for a period of three years. A renewal license or user permit is also issued for a period of three years. However, a user-limited permit is valid only for a single purchase transaction.
(2) A limited permit is issued for a period of one year. A renewal limited permit is also issued for a period of one year.
[ATF No. 1, 68 FR 13786, Mar. 20, 2003, as amended by ATF 2017R-21, 84 FR 13799, Apr. 8, 2019]