Code of Alabama — Title 40 (Revenue and Taxation)
Ala. Code § 40-9-14.2 — Airport Authorities
Notwithstanding any other provision of law, beginning January 1, 2020, all airport authorities established pursuant to Chapter 3 of Title 4 or by local law and contracts entered into by airport authorities on or after January 1, 2020, are exempted from paying any state, county, and municipal sales and use tax.
Source: official text