Quarterly Estimated Tax Calculator — Alabama (2026)
If you earn income in Alabama without withholding — freelancing, contracting, rentals, dividends — the IRS expects payment four times a year, not once. This calculator turns your expected 2026 net profit into a per-quarter number covering self-employment tax, federal income tax and Alabama state tax. Alabama uses a progressive income tax with 3 brackets running from 2.00% up to 5.00%, applied after a state standard deduction of $3,000.
Alabama Quarterly Tax Calculator
Gross 1099 income minus business expenses.
2026 due dates and safe harbor
Federal estimated payments are due April 15, June 15, September 15 of 2026 and January 15 of 2027. You avoid penalties by paying either 90% of the current year's liability or 100% of last year's (110% if prior-year AGI exceeded $150,000) — the safe-harbor rule.
Alabama runs its own estimated-payment schedule that usually mirrors the federal dates. On $90,000 of net profit the Alabama portion alone is about $998 per quarter.
Underpayment penalties
The IRS charges interest-style penalties per quarter you fall short, currently around 7–8% annualized. Paying late in the year does not fix an early-quarter shortfall unless you use the annualized income method on Form 2210.
Irregular income is common in healthcare work around Birmingham: if Q1 is slow and Q4 is huge, the annualized method usually beats four equal payments.
Paying as a Alabama taxpayer
Pay federally through IRS Direct Pay or EFTPS, and Alabama through the state revenue department's online portal — keep confirmation numbers for both.
Several Alabama cities levy occupational taxes (Birmingham 1%, Bessemer 1%).
Local and payroll taxes Alabama adds on top
Alabama adds no state-mandated employee payroll deduction beyond FICA, so nothing extra is taken from your gross pay at the state level.
Several Alabama cities levy occupational taxes (Birmingham 1%, Bessemer 1%).
Nobody withholds these for you when you are self-employed in Alabama. Local wage taxes, city business licences and gross-receipts style levies are yours to register for and remit alongside your quarterly federal and state estimates.
Working across a state line from Alabama
Alabama has no income-tax reciprocity agreements, so if you live here and work across a state line you generally file a nonresident return in the work state and claim a credit at home to avoid double taxation.
Remote and hybrid work complicates this further: most states tax income where the work is physically performed, so a Birmingham resident spending part of the year at a client site in Tennessee may owe a nonresident return there. Keep a day-count log if you split time between states.
The rest of your Alabama tax bill
Alabama charges a 4% state sales tax, homeowners pay an average effective property tax of 0.39% of market value, and the minimum wage in force during 2026 is $7.25 an hour.
Local rates push combined sales tax to about 9.3% on average.
Income tax is only one part of a state's take. Alabama recovers revenue through sales and property tax as well, which is why headline income tax rates alone are a poor guide to how far a salary really goes. Alabama exempts Social Security and most defined-benefit pensions, but taxes 401(k) and IRA withdrawals above a $6,000 exclusion for filers 65+.
Alabama vs Tennessee on the same salary
On a $90,000 salary, a single filer keeps about $67,835 a year in Alabama against roughly $72,145 in Tennessee — a difference of $4,310, or $359 a month.
Effective combined rates are 24.6% in Alabama and 19.8% in Tennessee. Set that gap against living costs: index 88 here versus 91 there, with property tax at 0.39% and 0.66% respectively.
Alabama income tax brackets 2026 (single filer)
| Taxable income | Rate |
|---|---|
| $0 – $500 | 2.00% |
| $500 – $3,000 | 4.00% |
| $3,000 and up | 5.00% |