Arizona Income Tax Calculator 2025
Arizona uses a flat personal income tax of 2.50% on taxable income for the 2025 tax year, applied equally to single, joint, and head-of-household filers. This 2025–2026 calculator applies the current rate to the state taxable income you enter — your state's standard deduction and exemptions are shown below for reference, so subtract them first — and returns your effective and marginal rate so you can model a move or remote-work scenario. Residency rules vary by state — check your state revenue department for the controlling test before filing. Use it alongside our federal calculator and the neighboring-state comparison below to see your full 2025–2026 picture.
State tax is where 'simple' becomes complicated fast. Nine states tax no wage income at all — New Hampshire joined them outright when its interest-and-dividends tax ended January 1, 2025 — and Washington taxes only certain capital gains. The rest each have their own brackets, credits, conformity quirks with federal law, and reciprocity rules with neighbors. Pick the wrong residency date and you'll file two part-year returns.
Real-world scenario
Software engineer moves from California to Texas mid-year
$220K salary, moves July 1. California taxes the $110K earned while a resident (~$10K state tax). Texas: $0. But California also taxes any RSUs that vested while she was a CA resident, even if she moved before exercising. If she sold ISO stock in December while a TX resident, CA still claims a piece based on the workdays-in-CA allocation during the grant period.
The part most people miss
Domicile vs. residency is the audit battleground. California in particular runs aggressive residency audits on high earners who 'move' to Texas, Florida, or Nevada. They look at where your dentist is, where your dog is licensed, where your driver's license was issued, and how many days you spent in the state. California has no 183-day bright line — its test is domicile plus facts and circumstances (the mechanical 183-day/permanent-abode test is New York's); the soft factors decide.
Calculate Your Arizona State Tax
Enter your state taxable income to see your estimated Arizona state tax before credits (bracket math on the income you enter — state credits are not modeled)
2025 state brackets effective Jan 1, 2025 (Tax Foundation 2025 dataset).
Income after your state's deductions and exemptions — entering gross income will overstate your tax
Your Arizona Tax Estimate
State Tax
$1,875
Effective Rate
2.50%
Marginal Rate
2.50%
Tax Bracket Breakdown
Arizona Tax Facts
Arizona uses a simple 2.50% flat tax rate on all income.
- Tax System: Flat Tax Rate
- Standard Deduction: $15,750 single / $31,500 MFJConforms to federal standard deduction.
- Flat tax rate of 2.5%.
Compare With Other States
Common take-home amounts in Arizona
Arizona 2025 Tax Brackets
Arizona applies a single flat rate to all taxable income — the same percentage regardless of how much you earn.
Single
| Taxable income | Tax rate |
|---|---|
| $0 and up | 2.50% |
Married Filing Jointly
| Taxable income | Tax rate |
|---|---|
| $0 and up | 2.50% |
How Arizona compares to neighboring states
Bracket and deduction figures are checked against the state revenue department and the Tax Foundation database, with a documented correction ledger. The calculator applies brackets to the state taxable income you enter; deductions and exemptions are shown for reference, not auto-applied. Arizona rate data was last reviewed for the 2025 tax year; 2026 figures are updated as states publish them.
Disclaimer: This calculator provides estimates for educational purposes only. Not tax, legal, or financial advice. Consult a qualified CPA or tax professional for your specific situation.