Estimate your annual Arizona state income tax under the flat 2.5% rate — and see exactly how much the flat tax saves you versus the old brackets.
Estimate only — not tax advice. Arizona conforms to federal AGI; complex situations may differ. Arizona Department of Revenue is authoritative.
Arizona has one of the simplest income tax systems in the country. Since tax year 2023 there is a single flat 2.5% rate — no brackets, no local income tax. What still takes a little work is figuring out your Arizona taxable income, because Arizona starts from your federal AGI and then applies its own subtractions and deduction.
Before 2022, Arizona used four brackets from 2.59% up to 4.5% (single filers). The move to a flat 2.5% cut taxes for nearly everyone, with the biggest dollar savings going to higher earners. This calculator shows your personal savings versus the old 2021 brackets.
| Tax Year | Structure | Top Rate |
|---|---|---|
| 2021 & earlier | 4 brackets | 4.50% |
| 2022 | 2 transitional brackets | 2.98% |
| 2023 onward | Single flat rate | 2.50% |
| 2026 | Single flat rate | 2.50% |
| Income Type | Arizona Treatment |
|---|---|
| Social Security benefits | Fully exempt |
| Active-duty military pay | Fully exempt |
| Military retirement pay | Fully exempt |
| U.S./AZ/local government pension | Up to $2,500 exempt |
| Interest on U.S. obligations | Exempt |
| Private pension, 401(k), IRA | Taxable at 2.5% |
| Arizona lottery winnings | Up to $5,000 exempt |
Arizona's standard deduction matches the federal figures: $16,100 single, $32,200 married filing jointly, $24,150 head of household for 2026. You can itemize on your Arizona return even if you took the federal standard deduction — Arizona itemized deductions largely track federal ones. Standard-deduction filers also get a bonus: add 25% of the charitable contributions you would have itemized (HB 2757).
Beyond the dependent credit ($125 under 17, $25 for 17+), Arizona is famous for its dollar-for-dollar charitable tax credits — Qualifying Charitable Organizations, Qualifying Foster Care Organizations, public/private school credits, and the military relief fund. These directly reduce your Arizona tax and can, combined, eliminate a typical filer's liability entirely.
Low income tax (2.5% flat), no local income tax, low property tax (~0.43% effective), and no estate or inheritance tax make Arizona very tax-friendly. The trade-off is a relatively high combined sales tax (TPT) that averages about 8.2% statewide.