Arizona Bonus Tax Calculator
Data compiled and maintained by Edmond Daher · Updated 2026-08-02
Arizona bonus tax calculator
2025 standard deduction (2026 pending). Arizona's tax rates for 2026 are current, but it has not published its 2026 standard deduction yet, so this page subtracts its 2025 amount. We update this page when the state publishes.
A Arizona bonus feels heavily taxed, but the missing chunk is withholding, not a bonus tax. Arizona has no separate bonus rate, so it withholds using the aggregate method (about 2.5%) on top of the 22% federal prepayment and FICA. Put in your figures above to compare what's withheld now with your real tax at filing — and the refund or shortfall. Everything runs in your browser.
The quick take: a stand-alone Arizona bonus has a flat 22% federal tax withheld, no separate Arizona rate — it's withheld as ordinary wages (about 2.5%), plus 7.65% FICA. Treat it as money on account. The real tax is your marginal rate, reconciled on your return; the tool above shows the gap either way.
Estimate only, not tax advice — terms.
What comes out of a Arizona bonus in 2026
Where the 22% comes from. Employers may withhold a flat 22% of a separately identified bonus for federal income tax (IRS Publication 15). A mandatory 37% hits supplemental pay beyond $1,000,000 a year; neither figure is a special "bonus" rate, both are withholding defaults.
Arizona folds the bonus into regular pay. Lacking a flat supplemental rate, Arizona uses the aggregate method: withholding is figured on your wages plus the bonus. At its 2.5% flat rate, that lands a bonus near 2.5%.
FICA is the real tax. Social Security (6.2% to the wage base) and Medicare (1.45%, +0.9% above $200,000) are owed at the same rate they're withheld. Neither piece refunds at filing, so both columns of the tool show it unchanged; the income-tax withholding is the only part that trues up.
For everyday pay instead of a bonus, the Arizona paycheck calculator is the tool to use.
Three bonus sizes in Arizona: $5,000, $25,000 and $100,000 withheld
What's held back from three bonus sizes in Arizona (single filer, $70,000 salary):
| Bonus | Federal | Arizona | FICA | Total | % of bonus |
|---|---|---|---|---|---|
| $5,000 | $1,100 | $125 | $383 | $1,608 | 32.1% |
| $25,000 | $5,500 | $625 | $1,913 | $8,038 | 32.1% |
| $100,000 | $22,000 | $2,500 | $7,650 | $32,150 | 32.1% |
That percentage moves once Social Security caps out at the wage base, and the income-tax slice still settles at filing.
Why your Arizona bonus looks over-taxed — and mostly isn't
Think of the flat rate as a deposit, not a bill. A bonus is taxed like any wages — at your marginal rate when the year's income runs through the brackets — and the 22% is only how it's withheld. Below a 22% real rate you get money back; above it, you settle the gap at filing. Worked out for the $18,000 bonus here, about $1,800 returns as a refund. Only FICA (7.65%) is a true tax that never returns.
Arizona vs. California, Nevada and New Mexico: bonus withholding compared
Take a $10,000 bonus for someone on $70,000 and compare Arizona with bordering California, Nevada and New Mexico:
| State | Bonus method | State withheld | Total withheld |
|---|---|---|---|
| Arizona | aggregate (~2.5%) | $250 | $3,215 |
| California | 10.23% / 6.6% | $1,023 | $3,988 |
| Nevada | no state income tax | $0 | $2,965 |
| New Mexico | flat 5.9% | $590 | $3,555 |
Totals stack federal 22%, state, and FICA for a single filer — the actual income tax lands when the return is filed.
$47,000 salary, $18,000 bonus: the Arizona withholding-vs.-tax breakdown
Take a single filer in Arizona earning $47,000 who gets a $18,000 bonus on its own check:
- Off the top: $5,787 disappears at payday — $3,960 federal, $450 Arizona, and $1,377 FICA — so roughly $12,213 actually reaches you, a 32.1% cut.
- At tax time: the bonus's actual income tax works out near $2,610 (federal $2,160 + Arizona $450) — and FICA is the same $1,377 as before.
- The gap: about $1,800 of income-tax over-withholding comes back as a refund when you file. Either way, the $1,377 FICA is final and won't come back.
Illustrative single-filer figures from this page's engine; your result depends on your total income and filing status.
Arizona bonus tax FAQ
Are bonuses taxed at a higher rate in Arizona?
No. A bonus is ordinary income taxed at your normal marginal rate when you file; the flat 22% withheld is a prepayment, not a tax rate.
Does Arizona have a separate bonus withholding rate?
No. Arizona has no separate supplemental rate, so a bonus is withheld with the aggregate method — as if it were part of your regular wages, effectively near 2.5%.
What rate does Arizona withhold on a bonus in 2026?
Arizona's supplemental withholding is about 2.5% (aggregate method), added to the flat 22% federal prepayment (37% on bonus pay over $1,000,000/yr) and 7.65% FICA. Only the income-tax portion is a prepayment; it trues up at your real rate.
Does my Arizona bonus ever come back at tax time?
The income-tax part can. If the flat 22% over-withheld relative to your real marginal rate, the excess is refunded; if you're a high earner above 22%, you pay more. FICA is never refunded.
Bonus tax calculators near Arizona
Arizona paycheck calculator · all state bonus tax calculators →
Sources
- IRS Publication 15 (2026) — Supplemental Wages (flat 22% / 37% above $1M)
- Arizona income-tax status & rate: see the Arizona paycheck calculator sources (state DOR, verified 2026-08-02).