Arizona Bonus Tax Calculator 2025
A bonus is a supplemental wage, and it is taxed differently from a normal paycheck. The federal government withholds a flat 22% on supplemental wages up to $1,000,000 in a year (37% on anything above that), plus FICA. Arizona withholds supplemental wages such as bonuses at a flat 2.5%.
Enter your bonus below. The calculator shows federal supplemental withholding, Social Security (6.2% up to the $176,100 wage base) and Medicare (1.45%, plus 0.9% above $200,000), the Arizona state portion, and your real take-home. Everything runs in your browser — no amounts or personal data are transmitted.
Important: Arizona has a flat 2.5% income tax applied to supplemental wages. Verify the current figure with the Arizona Department of Revenue.