Ala. Code § 40-21-27: Apportionment of Local Taxes.

The Department of Revenue shall apportion the value of such franchise or intangible property thus ascertained as in this title provided among and between the counties and cities, towns, school districts, or other tax districts having a special assessment, in which such person, association, company, or corporation does business, in proportion to the amount of business done in and receipts derived from each locality, except in case of a railroad or railway company, which apportionment shall be on single track main line basis, telephone or telegraph companies and electric power companies on pole or wire mileage, pipelines and car companies other than express companies on mileage basis.