Arizona charges 2.5% flat state income tax. Use the quarterly tax estimator pre-loaded with Arizona rates.
Open Quarterly Tax Estimator →Quarterly estimated payments in Arizona must cover both your federal and state obligations. Arizona applies a flat 2.5% rate, and most states require their own quarterly payment schedule that may differ from the IRS dates. This estimator pre-loads Arizona's tax rates so you can calculate both federal and state quarterly amounts in one place, avoiding underpayment penalties at both levels.
Arizona levies a flat 2.5% state income tax on all taxable income regardless of how much you earn. This makes tax planning straightforward: for every additional dollar you earn, 2.5 cents goes to Arizona. Arizona does not impose local income taxes, so the 2.5% flat rate is the only state-level income tax you owe.
The table below shows what you actually keep at five salary levels in Arizona, accounting for federal tax, FICA, and Arizona's flat 2.5% state tax.
See how Arizona compares to other West states. Each link takes you to the quarterly tax estimator landing page for that state.
For a comprehensive breakdown of Arizona’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full Arizona take-home pay page.