Arizona Marginal vs Effective Tax Rate
Understand your marginal vs effective tax rate in Arizona. See how much you actually pay vs your tax bracket rate.
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Pre-filled: Tax Foundation
Pre-filled: Tax Foundation — used as the marginal rate directly (not discounted) whenever the state tax type is progressive and no canonical bracket config is available
Marginal Tax Rate (Federal + State)
Estimated • Based on your inputs
Effective Tax Rate (Federal + State)
13.65%
Detailed Breakdown
Disclaimer: This calculator provides estimates for informational purposes only. Results should not be considered financial, tax, or legal advice. Consult a qualified professional for your specific situation.
How This Calculator Works
Calculation methodology and assumptions
Your marginal tax rate is the rate on your last dollar earned. Your effective rate is total tax ÷ total income — always lower than marginal. State tax is computed using Arizona's actual tax brackets, both for the dollar amount owed and for the rate on the next dollar (the rate of the bracket that holds Arizona taxable income, plus any credit that phases out as income rises). Arizona uses a flat 2.5% rate; its effective rate stays below that wherever part of income is not taxed. For a single filer, Arizona's rates apply to gross income less Arizona's own allowance: Arizona subtracts its $15,750 standard deduction for a single filer (tax year 2025). For a married couple the calculator subtracts only the Arizona deduction you enter.
Example Calculation
How does Arizona's tax burden compare for a typical household?
Consider a household earning $85,000/year that owns a $423,000 home (Arizona's median) and spends about $30,000/year on taxable purchases. Federal income tax (2026 brackets) plus FICA comes to roughly $16,373. Arizona's flat 2.5% income tax adds about $1,731. Property tax at 0.48% adds $2,030/year, and sales tax at 5.6% on taxable spending adds roughly $1,680/year.
Result: Total estimated tax burden: approximately $21,814/year, or about 25.7% of gross income (21.3% from income taxes and FICA alone). The total effective tax rate varies dramatically by state — no-income-tax states can run 10+ percentage points lower than high-tax states at the same income, a difference worth thousands of dollars a year.
Arizona: marginal vs effective rate at four incomes
Arizona subtracts its $15,750 standard deduction for a single filer (tax year 2025). Source: Arizona Department of Revenue — 2025 Form 140 instructions, line 43. Arizona's flat 2.5% applies to the Arizona taxable income in the second column.
| Gross income | Arizona taxable income | Federal bracket | Arizona rate on the next dollar | Marginal (both) | Effective (all income tax) | Arizona tax | Total income tax |
|---|---|---|---|---|---|---|---|
| $40,000 | $24,250 | 12% | 2.5% | 14.5% | 8.1% | $606 | $3,226 |
| $85,000 | $69,250 | 22% | 2.5% | 24.5% | 13.6% | $1,731 | $11,601 |
| $150,000 | $134,250 | 24% | 2.5% | 26.5% | 18.7% | $3,356 | $28,090 |
| $300,000 | $284,250 | 35% | 2.5% | 37.5% | 25.1% | $7,106 | $75,241 |
Same function as the calculator above (2026 federal brackets). Nothing else is subtracted for Arizona: no itemized deductions, dependents or other credits.
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StateCalc Team
Editorial Team
The StateCalc team builds free financial calculators using data from official government sources including the IRS, U.S. Census Bureau, BLS, and state revenue departments. All formulas are validated by an automated test suite and cross-referenced against published data.
Our editorial standardsFrequently Asked Questions
What is the difference between marginal and effective tax rate?
Your marginal rate is the tax percentage on your next dollar of income (your highest bracket). Your effective rate is total taxes paid divided by total income. For example, with $100,000 income and $18,000 in total taxes, your effective rate is 18%, even if your marginal bracket is 24%.
What are Arizona's income tax brackets?
Arizona has a flat tax rate of 2.5% on all taxable income.
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