Ala. Code § 45-2-21.05

A referendum provided for by this subpart shall be held not less than 60 days from the date of the local authorization and not more than 120 days from the date of the local authorization. The referendum shall be held at the next regular election or at a special election called by the governing bodies of the municipalities holding the referendum, or by the county commission. The governing body or the county commission calling the referendum shall pay the costs associated with the referendum.