Yes, Alabama does have a state income tax. Rates run from 2% to 5% across three brackets, and because those brackets are narrow, most filers end up paying the top 5% rate on the bulk of their taxable income. Alabama offsets that with unusually generous subtractions, including a full deduction for the federal income tax you paid and a complete exemption for Social Security benefits.
Alabama’s Income Tax Rates
Single filers, heads of family, and married people filing separately pay:1Alabama Department of Revenue. What Is Alabama’s Individual Income Tax Rate?
- 2% on the first $500 of taxable income
- 4% on the next $2,500 (income from $501 to $3,000)
- 5% on everything above $3,000
Married couples filing jointly pay:1Alabama Department of Revenue. What Is Alabama’s Individual Income Tax Rate?
- 2% on the first $1,000 of taxable income
- 4% on the next $5,000 (income from $1,001 to $6,000)
- 5% on everything above $6,000
A single filer with $50,000 in taxable income would owe $2,460 in Alabama tax: $10 at the 2% rate, $100 at the 4% rate, and $2,350 at the 5% rate. That’s before you account for the deductions and exemptions below, which bring taxable income down well under gross earnings.
What You Can Subtract Before the Rate Applies
Your Alabama tax is calculated on taxable income, not gross income. Three subtractions make the biggest difference.
Federal Income Tax Deduction
Alabama is one of the few states that lets you deduct the full amount of federal income tax you paid during the year from your state taxable income.2Alabama Legislature. Alabama Code 40-18-15 – Deductions for Individuals Generally For a household with a meaningful federal tax bill, this alone can cut Alabama taxable income by thousands. Non-residents deduct a proportional share based on the ratio of Alabama income to total income.
Standard Deduction
The standard deduction phases down as income rises but never falls below a floor.2Alabama Legislature. Alabama Code 40-18-15 – Deductions for Individuals Generally If your adjusted gross income is under $25,500, you get the full amount.
- Single: up to $3,000, with a floor of $2,500
- Married filing jointly: up to $8,500, with a floor of $5,000
Above the $25,500 AGI threshold, single filers lose $25 for every additional $500 of AGI; joint filers lose $175 for every $500. You can itemize instead if that produces a lower taxable income.
Personal Exemptions
On top of the deduction, every filer claims a personal exemption: $1,500 for single or married filing separately, and $3,000 for head of family or married filing jointly. Each dependent who received more than half their support from you adds another $300, with no age limit.3Cornell Law School. Alabama Admin Code r. 810-3-19-.02 – Personal Exemptions and Credit
Who Has to File
If Alabama is your permanent home, the state treats you as a resident and taxes all of your income, including income earned while working out of state.4Cornell 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: maintaining a permanent home in the state, or spending more than seven months of the tax year there (consecutive or not), creates a presumption of residency.
Non-residents owe Alabama tax only on income from Alabama sources, such as wages earned in-state, rent from Alabama property, or profits from an Alabama business. Part-year residents report income earned during their period of residency.
Whether you actually need to file depends on your filing status and adjusted gross income:5Alabama Department of Revenue. Individual Income Tax
- Single: $4,000 or more
- Head of family: $7,700 or more
- Married filing separately: $5,250 or more
- Married filing jointly: $10,500 or more
Active-duty military members stationed in Alabama but domiciled elsewhere don’t owe Alabama tax on their military pay. Their spouses can also be exempt from Alabama tax on earned income if the spouse shares the service member’s out-of-state domicile and is in Alabama solely because of military orders.6Alabama Department of Revenue. I Am in the Military and Not a Legal Resident of Alabama Qualifying spouses file Form A4-MS with their employer to stop Alabama withholding.
Retirement Income and Social Security
Alabama is friendlier than most states to retirees. Social Security benefits are completely exempt from Alabama income tax.7Alabama Department of Revenue. Income Exempt from Alabama Income Taxation So are several categories of pension income:8Alabama Legislature. Alabama Code 40-18-19 – Exemptions – Generally
- Payments from Alabama’s 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
Retirees who are 65 or older and receive taxable retirement income outside those categories, such as distributions from a 401(k) or traditional IRA, can exclude the first $6,000 of that income. On a joint return, each spouse can claim the exclusion separately.
Filing Deadline and Late Penalties
Alabama individual returns are due April 15, shifting to the next business day when that falls on a weekend or holiday.9Alabama Department of Revenue. When Should I File My Alabama Individual Income Tax Return? If you can’t file on time, Alabama grants an automatic six-month extension to October 15 with no form required. The extension only covers paperwork, though. Any tax you owe is still due April 15, and payment should go in with a Form 40V voucher.10Alabama Department of Revenue. Can I Apply for an Extension to File My Return?
Residents file Form 40, non-residents file Form 40NR, and both can be e-filed free through the My Alabama Taxes portal.11Alabama Department of Revenue. Home
Miss the deadline and penalties stack. Late filing costs the greater of 10% of the additional tax due or $50. Late payment is a separate penalty, and together they can reach 25% of the unpaid tax.12Alabama Legislature. Alabama Code 40-2A-11 – Civil Penalties Interest also accrues on any unpaid balance from the original April 15 due date until the balance is paid in full. For all four quarters of 2026, Alabama’s annual interest rate on underpayments is 7%.13Alabama Department of Revenue. Quarterly Interest Rates