Alabama Tax Guide 2026
TaxKiln Editorial · Last reviewed:
Alabama has a 3-bracket graduated personal income tax (2% / 4% / 5%) with the 5% top rate beginning at just $3,000 of taxable income (single) or $6,000 (MFJ) — among the lowest top-bracket thresholds in the US. Alabama is one of only three states (with Iowa and Louisiana — Iowa repealed for 2023+) that allow a federal income tax deduction (FIT) on the state return, materially lowering effective state tax. Corporate income tax is 6.5%. State sales tax is 4% with local add-ons commonly bringing the combined rate to ~9.25% (Ala. Code §40-23-2). Alabama also imposes a Business Privilege Tax on entities (Ala. Code §40-14A).
The graduated income tax with federal deductibility
Alabama's bracket structure (Ala. Code §40-18-5) is unusual because the top 5% rate kicks in almost immediately: Single / MFS / HoH: • 2% on first $500 • 4% on $500–$3,000 • 5% on income over $3,000 Married Filing Jointly: • 2% on first $1,000 • 4% on $1,000–$6,000 • 5% on income over $6,000 Virtually every filer with meaningful income hits the 5% top rate. The redeeming feature is the federal income tax deduction (FIT) under Ala. Code §40-18-15(a)(11): the federal income tax paid in the year is deductible on the Alabama return, which materially lowers effective state tax for higher earners. Example effective rate impact: a single filer at $100,000 taxable income with $15,000 of federal income tax paid deducts the $15k, paying AL 5% on roughly $85,000 — effective state rate ~4.25%. FIT is not allowed for sales tax, fuel tax, FICA, or self-employment tax — only federal income tax actually paid.
Standard deduction, personal exemption, dependent exemption
Standard deduction (Ala. Code §40-18-15): • Single / MFS: up to $3,000, phased down for AGI > $20,500–$30,000 • MFJ: up to $8,500, phased down for AGI > $20,500–$30,000 • HoH: up to $5,200 Personal exemption: $1,500 (single/MFS) or $3,000 (MFJ). Dependent exemption: $300 to $1,000 per dependent, depending on AGI (higher exemption at lower AGI). The combination of low standard deduction + FIT means Alabama returns reward documentation: itemizers who track federal tax payments closely capture the full FIT benefit.
Sales tax, grocery tax, and local rates
State sales tax is 4% (Ala. Code §40-23-2). Counties and cities almost universally add on, bringing combined rates to among the highest in the US: • Birmingham: 10% combined • Mobile: 10% combined • Montgomery: 10% combined • Huntsville: 9% combined • Tuscaloosa: 10% combined • Rural counties: typically 7%–9% Grocery tax: historically 4% state (one of only 13 states still taxing groceries). Act 2023-554 reduced the state grocery rate to 3% effective September 2023 and authorizes a further cut to 2% when General Fund growth meets statutory triggers. Local grocery taxes remain unchanged unless localities act independently. Clothing: taxable at full rate. No general clothing exemption. Prescription drugs: exempt. Services: generally exempt (Alabama is a goods-focused sales tax state). Economic nexus (Ala. Code §40-23-68): $250,000 in Alabama sales in the prior calendar year. Marketplace facilitators required to collect (Act 2018-539).
Business Privilege Tax (BPT)
Alabama imposes an annual Business Privilege Tax on most entities (Ala. Code §40-14A) based on net worth apportioned to Alabama: Rate schedule (graduated by federal taxable income): • $0.25 per $1,000 net worth (taxable income under $1) • $1.00 per $1,000 (taxable income $1–$200,000) • $1.25 per $1,000 ($200,000–$500,000) • $1.50 per $1,000 ($500,000–$2,500,000) • $1.75 per $1,000 (over $2,500,000) Minimum: $50. Maximum: $15,000 (financial institutions: $3 million cap). The minimum BPT was eliminated for entities with $80,000 or less in BPT-base for tax years 2024+ (Act 2022-252), removing the floor for small LLCs and corporations. Form: BPT-IN (initial) and CPT/PPT (annual). Due date: 2.5 months after year-end (3/15 for calendar-year entities).
Corporate income tax and pass-through entities
Corporate income tax (Ala. Code §40-18-31): flat 6.5%. Federal income tax paid is deductible at the corporate level — same FIT mechanic as the personal return. Apportionment: single-sales-factor (Act 2021-1, applies to tax years beginning on or after Jan 1, 2021). Sales sourcing follows market-based rules for services and intangibles. Pass-through entity tax (PTET) — Alabama Electing Pass-Through Entity Tax (Ala. Code §40-18-24.4): elective entity-level tax at 5%, allowing partners and S-corp shareholders to circumvent the federal SALT cap. Election made annually by the original or extended return due date. Owners receive a refundable credit for the PTET paid on their behalf. S-corporations: Alabama recognizes federal S-elections automatically (Form 20S filed at entity level, no separate state S-election required).
Property tax
Alabama has the second-lowest property tax burden in the US, averaging ~0.41% effective rate. The constitutional structure (Ala. Const. Amend. 373) caps millage and assessment ratios: • Class I (utility): 30% assessed • Class II (commercial): 20% assessed • Class III (residential, owner-occupied): 10% assessed • Class IV (agricultural): 10% assessed The homestead exemption (Ala. Code §40-9-19) exempts $4,000 of assessed value (state portion) and $2,000 (county) for owner-occupied homes. Filers 65+ or totally disabled are exempt from state property tax entirely on principal residence. Property tax is collected at the county level. Mortgage escrows are common.
Self-employment and Schedule C filers
Alabama treats federal Schedule C net profit as ordinary income flowing through to the AL return. Federal SE tax (Schedule SE) is NOT deductible for AL purposes — only federal income tax paid is FIT-deductible. Quarterly estimated tax (Form 40ES) required if expected AL tax liability exceeds $500 — same threshold as federal §6654 logic. Due dates align with federal: April 15, June 15, September 15, January 15. Self-employed filers in Alabama typically benefit from: • Low effective state rate after FIT (often 3.5%–4.5% effective) • PTET election if structured as multi-member LLC or S-corp • Low property tax on home offices and shop space • But: high combined sales tax on supplies and materials (often 9%–10%)
Filing deadlines and forms
Individual income tax: Form 40 (resident), Form 40NR (nonresident), Form 40A (short form). Due April 15 (or federal due date if shifted). Extensions: AL automatically grants the federal extension — file Form 4868 federally and no separate AL form needed (provided AL tax is paid by April 15). Corporate income tax: Form 20C, due 3.5 months after fiscal year-end (April 15 for calendar-year corps). S-corporations: Form 20S, due March 15. Partnerships: Form 65, due March 15. Business Privilege Tax: Form CPT (C-corps) / PPT (pass-throughs), due 2.5 months after year-end. Electronic filing: required for most entity returns. Individuals can file via My Alabama Taxes (MAT) portal or commercial software.
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