Arizona's tax brackets and rates for 2024

Arizona has five tax brackets that increase with income. The rates range from 2.55% on the lowest bracket to 4.5% on the highest. Your bracket depends on your filing status — single, married filing jointly, married filing separately, or head of household — and your total taxable income for the year.

The brackets themselves change each year because Arizona adjusts them for inflation. For 2024, a single filer pays 2.55% on income up to $31,326, then 3.34% on income from $31,327 to $62,651, then 4.17% on income from $62,652 to $156,626, then 4.35% on income from $156,627 to $313,253, and 4.5% on income above $313,253. Married couples filing jointly have higher income thresholds at each bracket.

Key Takeaways

  • Arizona taxes income at five different rates depending on how much you earn, starting at 2.55% and topping out at 4.5%.
  • Your tax bracket is determined by your filing status and total taxable income, not your gross income.
  • The income thresholds for each bracket change every year to account for inflation, so last year's brackets do not apply to this year's return.
  • You can reduce your taxable income through deductions and credits, which may lower the bracket you fall into.

How Arizona calculates what you owe

Arizona taxes your taxable income, not your total earnings. Taxable income is what remains after you subtract deductions from your gross income. You can take either the standard deduction — a flat amount that depends on your filing status — or itemize deductions if your expenses are higher.

For 2024, the Arizona standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. If you are 65 or older, you get an additional deduction. Once you know your taxable income, you apply the tax brackets to find your total state tax owed.

Arizona also offers tax credits that reduce what you owe dollar-for-dollar. Common credits include the child and dependent care credit, the earned income credit, and credits for property taxes or rent paid. Credits are more valuable than deductions because they subtract directly from your tax bill rather than from your income.

Who has to file a return in Arizona

You must file an Arizona return if you live in the state and your income exceeds the filing threshold for your situation. The threshold is usually close to the standard deduction amount, but it varies by filing status and age. If you are a dependent, the rules are different — your parents' return may need to include information about your income.

Even if you do not have to file, you may want to if you had taxes withheld from your paychecks or if you are due a refund from credits. Arizona allows you to claim credits only if you file a return.

Withholding and estimated tax payments

If you work as an employee, your employer withholds Arizona state income tax from your paycheck based on the W-4 form you complete. The withholding is an estimate of what you will owe; the actual amount depends on your final tax situation at year-end. If too much was withheld, you get a refund. If too little was withheld, you owe when you file.

If you are self-employed or have income that is not subject to withholding, you may need to make quarterly estimated tax payments to Arizona. These are due on the 15th of April, June, September, and January. Underpayment can result in penalties and interest, so it is worth calculating what you expect to owe.

Special situations that affect your Arizona tax

Arizona offers a deduction for military retirement income — if you receive a military pension, you can deduct up to $2,500 of it from your taxable income. You must have served on active duty and received the pension based on that service.

If you are a resident of a Native American tribe, you may be exempt from Arizona income tax on income earned on tribal land. The rules are complex and depend on the specific tribe and the source of your income, so you should contact the Arizona Department of Revenue or your tribal tax office for guidance.

Arizona also allows deductions for contributions to certain retirement accounts, such as traditional IRAs and SEP IRAs. These reduce your taxable income in the year you contribute, though withdrawals in retirement are taxed as income.

Filing your Arizona return

You file your Arizona return using Form 140, which is the state income tax return form. You can file electronically through the Arizona Department of Revenue website or through a tax software provider, or you can mail a paper return. The deadline is typically April 15, the same as the federal deadline, though you can request an extension.

If you file electronically, you usually receive a refund within two to three weeks. Paper returns take longer. You can check the status of your return on the Arizona Department of Revenue website using your Social Security number and the amount of your refund or payment.

Frequently Asked Questions

Do I have to pay Arizona income tax if I live out of state but work in Arizona?

Yes. Arizona taxes income earned within the state regardless of where you live. You may be able to claim a credit on your home state return for taxes paid to Arizona to avoid double taxation, but you must file in Arizona first.

What is the difference between Arizona's tax rate and the federal tax rate?

Arizona's top rate is 4.5%, while the federal top rate is 37%. The two are separate taxes — you owe both. Your federal return and Arizona return are filed independently, though some deductions and credits apply to both.

Can I reduce my Arizona taxable income by contributing to a retirement account?

Contributions to a traditional IRA or SEP IRA reduce your Arizona taxable income in the year you contribute. Contributions to a Roth IRA do not. You must report the contribution on your return to claim the deduction.

What happens if I underpay my estimated taxes?

Arizona charges interest and penalties on underpayment of estimated taxes. The penalty is calculated based on how much you underpaid and how late the payment was. You can avoid penalties if your withholding and estimated payments equal at least 90% of your current year tax or 100% of your prior year tax.

Is Arizona income tax deductible on my federal return?

Yes, but only if you itemize deductions on your federal return rather than taking the standard deduction. State income taxes are subject to a $10,000 cap on the federal return, which includes state income tax, property tax, and sales tax combined.