Arizona Estimated Tax Payments Calculator

2026 rules

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

Your numbers

Filing status

Self-employment or business profit

W-2 wages

Other income (interest, dividends, gains, rental)

Arizona tax withheld from paychecks

Last year's Arizona 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)

Result

Arizona quarterly payment$399

Projected federal tax (incl. SE tax)$17,147
Projected Arizona tax$1,775
Arizona amount to pay in estimates$1,597
Arizona payment 1 · Apr 15, 2026$399
Arizona payment 2 · Jun 15, 2026$399
Arizona payment 3 · Sep 15, 2026$399
Arizona payment 4 · Jan 15, 2027$399
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$4,258

Arizona at a glance

Due dates: Apr 15, 2026, Jun 15, 2026, Sep 15, 2026, Jan 15, 2027
Rates: Arizona has a flat 2.50% income tax.

Arizona tax brackets for 2026

All filers (taxable income)
Rate	Taxable income
2.50%	over $0

Questions

When are Arizona 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 Arizona estimated-tax instructions too.