Arizona Income Tax Calculator 2026
Arizona taxes income at a single flat 2.5% rate for 2026 — estimate yours below.
Arizona's flat 2.5% income tax, explained
Arizona (AZ) taxes income at a single flat 2.5% rate rather than graduated brackets, so — unlike the federal system — every dollar of Arizona taxable income is taxed at the same rate. That makes the state calculation simple, but it is separate from federal income tax and from Arizona sales tax.
What to know about Arizona tax
- Arizona moved to a single flat income-tax rate of 2.5% — among the lowest flat rates in the country.
- The 2.5% applies to taxable income after Arizona’s own deductions, which differ from the federal standard deduction.
- Local jurisdictions add a transaction privilege (sales) tax on top of the state base, so combined rates run well above the state figure.
Frequently Asked Questions
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Calculate →Disclaimer
This calculator provides estimates for informational and educational purposes only. SmartTaxCalcs does not provide tax advice. Your actual tax liability may differ based on your specific situation, recent law changes, and circumstances not modeled here (e.g., AMT, NIIT, special credits). We strongly recommend consulting a qualified tax professional (CPA, Enrolled Agent, or tax attorney) before filing or making financial decisions.
Data source: IRS Revenue Procedure / state Departments of Revenue. Last data update: May 19, 2026.