Arizona Income Tax Rate
Single Flat Rate
Arizona taxes individual income at a single flat rate of 2.50 percent, the joint-lowest top rate in the country. Fifteen states use a single-rate structure.
What “Single Flat Rate” means
One rate applies to all taxable income, with no brackets rising with earnings.
15 of 50 states are in the same category
Alongside Arizona: Colorado, Georgia, Idaho, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Mississippi, North Carolina, Ohio, and 2 more.
Source: Tax Foundation · as of January 2026 · last verified October 16, 2026
See every state in our income tax tracker, or everything we track for Arizona.
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