Home / US Paycheck / Arizona
Arizona Paycheck Calculator 2026 — 2.5% Flat Tax & Take-Home Pay
Arizona's 2.5% flat tax is the lowest state income-tax rate in America — and you choose your own withholding percentage. See what the country's cheapest state tax costs on your paycheck — free, private, no sign-up.
How Arizona Paychecks Work
- Federal tax: progressive brackets 10%–37% minus the $16,100 standard deduction (single, 2026) — same as everywhere.
- FICA: 6.2% Social Security (up to the $184,500 wage base) + 1.45% Medicare — same as everywhere.
- State tax: 2.5% flat. The lowest single rate of any state. Arizona is unusual: you elect your own withholding percentage on Form A-4 (common elections 0.5%–3.5%) instead of the state computing it from tables.
Worked Example: $85,000 Single Filer
Arizona vs Texas vs California on $85,000
The same single filer keeps $66,502 in Arizona against $68,627 in Texas and $63,760 in California. Arizona's 2.5% is the closest any income-tax state gets to zero — just $82 a paycheck away from Arizona. Model any state in the calculator.
Illustrative estimate for a single filer, standard deduction, no pre-tax contributions. Confirm with the IRS or a tax professional.
Federal Withholding on a Arizona Paycheck
Only one income tax touches a Arizona paycheck: the federal one. Withholding follows the IRS percentage method in Publication 15-T, and three inputs drive it: your filing status, the dependents and credits you claim on Form W-4, and any extra withholding you request. Change any of the three and the same salary produces a different stub, which is why two Arizona workers earning $85,000 can take home different amounts.
Federal tax is progressive, which means it applies in slices, not to the whole salary at once. Only the dollars inside each bracket are taxed at that bracket's rate, so a single filer's effective rate is always lower than their top marginal rate. The standard deduction then removes a further slice of income from tax entirely before the brackets even start. Pre-tax items shrink the taxable wage base further: 401(k) contributions and health premiums taken pre-tax reduce the wages the percentages apply to, though the exact treatment differs by deduction type, so read your stub labels rather than assuming.
Our US paycheck calculator models this with an editable withholding percentage instead of hard-coding tables that Congress and inflation adjust every year. If you want the precise official arithmetic for the current year, Publication 15-T is the source the payroll industry itself uses.
FICA: the Two Lines That Always Appear
Below the federal line sit two flat deductions that behave nothing like income tax. Social Security takes 6.2% of wages up to the Social Security Administration's annual wage base, a cap it resets every year. Medicare takes 1.45% of all wages with no cap, plus an additional 0.9% on earnings above $200,000 for single filers ($250,000 joint) — those thresholds are set in statute, not adjusted annually. Your employer matches the 6.2% and the 1.45% dollar for dollar; the additional 0.9% is employee-only.
On the $85,000 example: Social Security is $85,000 x 0.062 = $5,270, comfortably below any recent wage-base cap, and Medicare is $85,000 x 0.0145 = $1,232.50. Together with federal withholding that is the entire deduction stack on a Arizona stub. There is no third line, which is exactly the point of the next section.
What Arizona Does Differently
Two things set Arizona apart. First, the 2.5% flat rate — the lowest in the nation, cut from a graduated system in 2023 to attract workers and retirees. Second, you choose your withholding rate: Arizona Form A-4 lets employees elect any percentage (or zero), unlike every other state's table-driven withholding. Elect too low and you owe at filing; elect 2.5% and you track liability almost exactly. There is no local income tax in Arizona.
Overtime and Pay-Frequency Math
Arizona follows the federal Fair Labor Standards Act: non-exempt employees earn 1.5x their regular rate for hours over 40 in a week, with no stricter state daily-overtime rule on top. At $30/hour and a 45-hour week: 40 x $30 = $1,200 straight time, 5 x $45 = $225 overtime, $1,425 gross for the week. Salaried exempt employees are outside this rule under the duties-and-salary-basis test, so a $85,000 salary means $85,000 of gross regardless of hours.
Pay frequency then decides the per-check number without changing the annual total. On $85,000: weekly (52) = $1,634.62; biweekly (26) = $3,269.23; semi-monthly (24) = $3,541.67; monthly (12) = $7,083.33. The existing $85,000 example uses biweekly, the most common Arizona schedule. Note that overtime and bonuses can push individual checks into higher withholding on that check alone; withholding per check annualizes the amount, so a spike check withholds as though you earned at that pace all year, with the balance settling at filing time.
New to Arizona Paychecks: Reading Your First Stub
A first Arizona pay stub surprises newcomers in two ways: there is no state line at all, and the federal and FICA lines look larger than expected because nothing else shares the load. Read it top to bottom. Gross is what you earned. Pre-tax items come off next. FITW (federal income tax withheld) follows your W-4. Then the two FICA lines. The remainder is net. The year-to-date column repeats the same stack cumulatively, which is how you spot a drift early — if YTD federal withholding looks high relative to gross in March, file a new W-4 rather than waiting until filing season. Anyone arriving mid-year should set the W-4 for the new situation on day one: settings calibrated to a previous state system will systematically over- or under-withhold here. Our US paycheck calculator lets you model the stub before the first one prints.
Tipped, Hourly, and Third-Paycheck Months
Arizona hospitality runs on tipped wages, and the federal rules are specific. Employers may pay a cash wage as low as $2.13 per hour provided tips bring total hourly earnings to at least the $7.25 federal minimum; if they do not, the employer makes up the difference. Overtime for tipped and hourly staff alike is 1.5 times the regular rate past 40 hours a week. Separately, biweekly earners get two third-paycheck months every year: 26 paychecks cannot divide evenly into 12 months, so two months contain three paydays. The annual total is unchanged, but budgeting monthly on two checks and treating the third as surplus is the standard move. Monthly billers should note the mirror image: semi-monthly schedules never produce a third check, so compare offers on annual gross, not per-check size.
Self-Employed in Arizona: What Changes
Without an employer there is no withholding at all, so the full stack lands on you four times a year. Self-employment tax replaces both halves of FICA: 12.4% for Social Security up to the annual wage base plus 2.9% for Medicare, with the additional 0.9% over the statutory thresholds exactly as for employees — 15.3% combined before income tax. Half of that combined amount is deductible when computing income tax, which softens it but does not remove it. Federal estimated payments fall on the fixed calendar: January 15, April 15, June 15 and September 15, shifting to the next business day when the date lands on a weekend. Arizona adds nothing on top: no state estimates, no state return, no state-level equivalent to argue about. Miss a federal quarter and interest accrues from the due date, so new freelancers should set calendar reminders before the first April deadline surprises them. Keep 25 to 30 percent of each client payment in a separate account and the quarters stop hurting.
Bonuses, Commissions, and Supplemental Pay
Not everything on a Arizona stub follows the salary rules. Bonuses, commissions, severance, and back pay are supplemental wages, and employers may withhold federal tax on them at a flat 22% up to $1 million in a year (37% above that), instead of running them through the W-4 percentage method. That is why a $5,000 bonus can arrive as $3,900 before FICA even though your salary withholding implies a lower rate: $5,000 x 0.22 = $1,100 held back, plus 6.2% Social Security and 1.45% Medicare on top. Arizona adds nothing either way, so a Arizona bonus beats the same bonus in California by the state slice alone. The flat rate is only withholding, not the final tax — the actual liability settles at filing time against your real marginal rate, which is why bonus-heavy earners in Arizona often see meaningful refunds. Overtime already covered above counts as regular wages, not supplemental pay, so the two rules never stack on the same dollar.
The Honest Footnote: Total Burden Matters
At 2.5%, Arizona's tax is barely a line item — but the elect-your-rate system punishes inattention: workers who never file Form A-4 often default to 0% and face an April surprise. Set 2.5% on day one. Remote workers generally owe tax where they physically live.
Frequently Asked Questions
How does Arizona's 2.5% flat tax work?
One rate on Arizona taxable income — the lowest of any state. Your employer withholds whatever percentage you elect on Form A-4; 2.5% tracks your actual liability.
How much will I take home in Arizona on $85,000?
Roughly $66,500 per year (≈$2,558 biweekly) for a single filer — about $82 less per paycheck than the same salary in Arizona.
What is Arizona Form A-4?
The Employee's Arizona Withholding Election: you choose your own state withholding percentage (commonly 0.5%–3.5%, or 0%). It replaces the table-based withholding most states use.
How is overtime calculated on an Arizona paycheck?
Arizona follows the federal FLSA: 1.5 times the regular rate for hours over 40 per week. At $30/hour, a 45-hour week grosses $1,425 (40 x $30 plus 5 x $45). Salaried exempt employees are outside the overtime rule.
Where do the federal tax tables come from?
IRS Publication 15-T, which sets out the percentage method employers use. Brackets, the standard deduction and the wage base move most years, so our calculator uses an editable withholding percentage and this page explains mechanics rather than printing tables that expire.
Do I pay Arizona tax if I just moved here?
Arizona taxes income earned while you are an Arizona resident. The move splits the year; file Form A-4 with your new employer on arrival week and elect 2.5%.
What is a third-paycheck month?
On a biweekly schedule (26 pays a year), two calendar months contain three paydays instead of two. Annual gross is identical; only the timing shifts. Per-check withholding can look high in a three-pay month because each check is annualized independently, with the difference settling at filing time.
Why was my Arizona bonus taxed so much?
It was withheld, not taxed, at the 22% flat federal supplemental rate (plus FICA), and Arizona withholds 2.5% on the bonus too. Your actual liability settles at filing time, which is why bonus-heavy earners often see refunds.
How do I compare two Arizona job offers?
Compare annual gross first, subtract 2.5%, then price benefits. The state tax is so small it rarely flips a comparison — focus on salary, 401(k) match, and health premiums.
Do Arizona freelancers pay quarterly taxes?
Federal estimated tax, yes: January 15, April 15, June 15 and September 15. Arizona estimated payments follow a similar quarterly calendar. Budget around 28 percent of each payment for the combined bill.
Should I update my W-4 when I move to Arizona?
Yes — the federal W-4 and Arizona Form A-4, on arrival week. Elect 2.5% on the A-4 unless you have a reason to differ; leaving it at 0% guarantees an April bill.
Does Arizona have local income tax?
No city or county income tax. The 2.5% state rate is the entire sub-federal income-tax stack.
Sources: AZ Dept. of Revenue (azdor.gov); 2.5% flat rate; Form A-4 withholding election. Federal figures: IRS Rev. Proc. 2025-32, SSA.gov. Accessed 2026-11-01.
Disclaimer: Estimates only — not tax advice. Confirm with the IRS or a tax professional.