Yes, Alabama does have a state income tax. It applies to residents on all income and to non-residents on income earned from Alabama sources, with rates running from 2% to 5% across three brackets. Because those brackets are compressed, most working Alabamians pay the top 5% rate on the bulk of their taxable income — though generous deductions, including a full write-off for federal income tax paid, pull the effective rate down.
Alabama’s Income Tax Rates and Brackets
Alabama uses three brackets, and they top out quickly. Single filers, heads of family, and married persons filing separately pay 2% on the first $500 of taxable income, 4% on the next $2,500, and 5% on everything above $3,000.1Alabama Department of Revenue. What Is Alabama’s Individual Income Tax Rate?
Married couples filing jointly get bracket widths that are double: 2% on the first $1,000, 4% on the next $5,000, and 5% on everything above $6,000.1Alabama Department of Revenue. What Is Alabama’s Individual Income Tax Rate?
The numbers work out this way in practice. A single filer with $50,000 of taxable income would owe $2,460 in Alabama income tax: $10 from the 2% bracket, $100 from the 4% bracket, and $2,350 on income above $3,000. Because the brackets are so narrow, your marginal rate is 5% on almost everything you earn once you’re past the first few thousand dollars.
What Shrinks Your Alabama Taxable Income
The rate table only tells half the story. Alabama gives back through several deductions and exemptions that reduce the income the 5% rate hits.
Federal Income Tax Deduction
This is where Alabama stands apart from most states. You can deduct the entire amount of federal income tax you paid during the year from your Alabama taxable income.2Alabama Legislature. Alabama Code 40-18-15 – Deductions for Individuals Generally For anyone with a meaningful federal tax bill, that deduction alone can pull thousands of dollars out of the Alabama base. Non-residents deduct a proportional share based on the ratio of their Alabama income to their total income.
Social Security and Retirement Income
Social Security benefits are completely exempt from Alabama income tax.3Alabama Department of Revenue. Income Exempt from Alabama Income Taxation Several categories of pension income are also fully exempt:
- Alabama public pensions from the Teachers’ Retirement System, Employees’ Retirement System, and Judicial Retirement System
- Federal pensions, including Civil Service Retirement, Foreign Service Retirement, and TVA pensions
- Military retirement pay
- Payments from any plan qualifying as a defined benefit plan under federal tax law
- Retirement payments to eligible Alabama firefighters and peace officers
- Federal Railroad Retirement benefits
If you’re 65 or older and take distributions from a 401(k), traditional IRA, or other taxable retirement account that isn’t in one of those exempt categories, the first $6,000 of that income is also excluded. Each spouse can claim the exclusion separately on a joint return.4Alabama Legislature. Alabama Code 40-18-19 – Exemptions – Generally
Standard Deduction and Personal Exemptions
Alabama’s standard deduction phases down as income rises. If your adjusted gross income is under $25,500, you get the full amount: up to $3,000 for single filers and up to $8,500 for married couples filing jointly. Above that AGI threshold, the deduction shrinks in steps but never drops below $2,500 for singles or $5,000 for joint filers.2Alabama Legislature. Alabama Code 40-18-15 – Deductions for Individuals Generally Single filers lose $25 for every $500 of AGI above the threshold; joint filers lose $175 per $500.
On top of that, you subtract a personal exemption of $1,500 (single or married filing separately) or $3,000 (head of family or married filing jointly), plus $300 for each dependent you supplied more than half the support for during the year. Alabama sets no age limit on qualifying dependents.5Cornell Law School. Alabama Admin Code r. 810-3-19-.02 – Personal Exemptions and Credit
Who Has to File
If Alabama is your domicile — your permanent home — you’re a resident for tax purposes and owe Alabama income tax on all your income, wherever it was earned. That holds even if you spend the whole year working out of state.6Cornell Law School. Alabama Admin Code r. 810-3-2-.01 – Individuals Subject To Alabama Income Tax
You can also be treated as a resident without being domiciled in Alabama. Keeping a permanent home in the state or spending more than seven months of the tax year inside its borders (consecutive or not) is enough for the state to presume residency and tax your full income.6Cornell Law School. Alabama Admin Code r. 810-3-2-.01 – Individuals Subject To Alabama Income Tax Non-residents owe Alabama tax only on Alabama-source income, such as wages earned in the state, rental income from Alabama property, or profits from a business based there. Part-year residents report what they earned while they lived in Alabama.
Whether you actually need to file a return depends on your adjusted gross income and filing status:7Alabama Department of Revenue. Individual Income Tax
- Single: $4,000 or more in adjusted gross income
- Head of family: $7,700 or more
- Married filing separately: $5,250 or more
- Married filing jointly: $10,500 or more
One notable carve-out: active-duty military members stationed in Alabama but domiciled in another state don’t owe Alabama income tax on their military pay. Under the Military Spouses Residency Relief Act, a spouse whose domicile matches the service member’s out-of-state domicile — and who is in Alabama only because of military orders — is also exempt from Alabama tax on earned income.8Alabama Department of Revenue. I Am in the Military and Not a Legal Resident of Alabama
Filing Deadlines and Late Penalties
Alabama individual returns are due April 15, shifting to the next business day when that falls on a weekend or holiday. Residents file Form 40; non-residents use Form 40NR. Both can be filed for free through the Alabama Department of Revenue’s My Alabama Taxes portal, and most commercial tax software supports Alabama e-filing.9Alabama Department of Revenue. When Should I File My Alabama Individual Income Tax Return?
If you need more time, Alabama automatically grants a six-month extension to October 15 without any form to fill out. The extension only buys you time to file, though. Anything you owe is still due April 15, and you should submit payment with a Form 40V voucher by that date to avoid penalties and interest.10Alabama Department of Revenue. Can I Apply for an Extension to File My Return?
Miss the deadline and the charges stack. Late filing costs the greater of 10% of the additional tax due or $50. A separate late payment penalty runs on top of that and can climb to 25% of the unpaid tax in total.11Alabama Legislature. Alabama Code 40-2A-11 Interest accrues on any unpaid balance from the original April 15 due date until it’s cleared, at an annual rate of 7% for all four quarters of 2026.12Alabama Department of Revenue. Quarterly Interest Rates The interest clock keeps running even during an extension, so filing on time and paying late still costs you.