Estimate your Arizona state income tax plus combined federal and AZ state tax for 2026. 2.5% flat rate.
Arizona has a 2.5% flat income tax rate — one of the lowest flat rates in the nation. This simplified structure means all Arizona taxable income is taxed at the same rate regardless of income level, making Arizona attractive for high earners relocating from higher-tax states. Use the calculator above to estimate your combined federal and Arizona state income tax for 2026. State tax figures use a simplified rate — for precise Arizona state tax calculations, consult the Arizona Department of Revenue or a licensed tax professional.
Arizona uses a 2.5% flat rate state income tax structure. Like most states, Arizona starts its calculation from your federal Adjusted Gross Income (AGI), then applies state-specific adjustments — subtracting income Arizona excludes from taxation (such as certain pension or Social Security income) and adding back any income Arizona taxes that the federal government does not. After adjustments, the Arizona standard deduction is applied, then the 2.5% flat rate is applied to arrive at state taxable income.
Arizona income tax is collected through employer paycheck withholding for W-2 employees and through quarterly estimated payments for self-employed residents and those with significant non-wage income. The Arizona state return is generally due April 15, aligned with federal returns. Part-year residents and nonresidents who earn income sourced in Arizona must also file a Arizona return for that income portion.
Your Arizona state income taxes are deductible on your federal Schedule A as part of the SALT (State and Local Tax) deduction, capped at $40,400 in 2026 under OBBBA. At the 22% federal bracket, paying $1,481 in Arizona state income tax generates approximately $325 in federal tax savings, reducing the true net cost of your Arizona taxes to about $1,156 for itemizing taxpayers.
Jordan is a single filer earning $75,000 in Arizona. This shows how federal and Arizona state income tax are calculated together.
Moving to a no-income-tax state (Texas, Florida, Nevada, or Wyoming) would save Jordan approximately $1,481/year ($123/month) in state income taxes. However, no-income-tax states often fund services through higher property taxes, sales taxes, or other fees, so a complete comparison requires evaluating all taxes together, not just income tax.
Arizona Tax Rate and Annual Filing
Arizona residents earning above the state filing threshold must file a Arizona income tax return annually, typically due April 15. The 2.5% flat rate applies after Arizona-specific deductions and any state tax credits. Employers withhold Arizona state income tax from employee paychecks throughout the year using Arizona withholding tables, and any balance owed or refund due is settled when the annual state return is filed. Self-employed Arizona residents make quarterly estimated payments to the state in addition to their federal quarterly estimated tax payments.
Federal SALT Deduction Reduces Net State Tax Cost
State income taxes paid in Arizona reduce your federal taxable income through the SALT deduction (capped at $40,400 in 2026 under OBBBA). For a Arizona resident in the 22% federal bracket paying $1,481 in state income tax, the SALT deduction recovers approximately $325 in federal taxes, so the true after-federal-benefit cost of Arizona state income tax is about $1,156. This offset only benefits taxpayers who itemize deductions on federal Schedule A rather than taking the standard deduction.
Total Tax Burden: State Income Tax Is One Piece
State income tax is one component of your total tax burden in Arizona. Property taxes, local income taxes (in some Arizona cities and counties), and state and local sales taxes also contribute to your overall cost of living. When comparing Arizona to other states, evaluate all tax types together rather than income tax in isolation. Use the calculator above to see your combined federal and Arizona state effective rate at your specific income level.
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Arizona has a 2.5% flat rate state income tax for 2026. Arizona has a 2.5% flat income tax rate — one of the lowest flat rates in the nation. This simplified structure means all Arizona taxable income is taxed at the same rate regardless of income level, making Arizona attractive for high earners relocating from higher-tax states. The state income tax is calculated separately from federal income tax and is paid through payroll withholding or quarterly estimated payments.
Arizona has its own state standard deduction separate from the federal standard deduction ($15,750 single, $31,500 MFJ in 2026). For precise Arizona state deduction amounts, consult the Arizona Department of Revenue or a state tax professional.
Arizona's 2.5% flat rate state income tax can be compared to other states using our state tax calculator above. The U.S. average top marginal state income tax rate is approximately 5-6%. Nine states have no income tax at all (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming), while California has the highest at 13.3%.
Arizona offers state tax credits and deductions that may reduce your state tax liability. Common state credits include earned income credits, child tax credits, and credits for the elderly. Consult the Arizona Department of Revenue website or a licensed tax professional for credits specific to your situation and income level.
Use the calculator above. Enter your income and AZ is pre-selected as your state. The calculator computes your 2026 federal income tax using the One Big Beautiful Bill Act brackets (10%-37%), adds your estimated Arizona state income tax (2.5% flat rate simplified), and displays your total tax burden, combined effective rate, and annual take-home pay. All calculations happen instantly in your browser.