Alabama Estimated Tax Payments Calculator

2026 rules

Enter your expected income to see what to send Alabama and the IRS each quarter.

Your numbers

Filing status

Self-employment or business profit

W-2 wages

Other income (interest, dividends, gains, rental)

Alabama tax withheld from paychecks

Last year's Alabama tax (total on your return)

Leave at 0 to use this year's estimate only.

Federal tax withheld

Last year's federal tax (Form 1040 line 24)

Local income tax rate

Birmingham and a few other cities tax wages.

Result

Alabama quarterly payment$833

Projected federal tax (incl. SE tax)$17,147
Projected Alabama tax$3,702
Alabama amount to pay in estimates$3,332
Alabama payment 1 · Apr 15, 2026$833
Alabama payment 2 · Jun 15, 2026$833
Alabama payment 3 · Sep 15, 2026$833
Alabama payment 4 · Jan 15, 2027$833
Federal amount to pay in estimates$15,433
Federal payment · Apr 15, 2026$3,858
Federal payment · Jun 15, 2026$3,858
Federal payment · Sep 15, 2026$3,858
Federal payment · Jan 15, 2027$3,858
First payment, state and federal$4,691

Alabama at a glance

Due dates: Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027
Rates: Alabama taxes income at 3 rates from 2% to 5%.

Alabama lets you deduct some or all of your federal income tax, which this estimate does not include.

Alabama tax brackets for 2026

Single (taxable income)
Rate	Taxable income
2%	$0 – $500
4%	$500 – $3,000
5%	over $3,000

Married filing jointly
Rate	Taxable income
2%	$0 – $1,000
4%	$1,000 – $6,000
5%	over $6,000

Questions

When are Alabama estimated tax payments due for 2026?

Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027.

How much do I need to pay to avoid a penalty?

This calculator uses the federal safe harbor: 90% of this year's tax, or 100% of last year's (110% if your AGI is over $150,000), less withholding. A few states use a different share of the current year's tax, so check the Alabama estimated-tax instructions too.