Arizona filing requirements are based on your filing status and gross income. If your income exceeds the applicable threshold, you must file an Arizona income tax return. Arizona residents generally report income from all sources, including income earned outside Arizona.
Who Must File an Arizona Tax Return?
You must file an Arizona return if your gross income is more than:
| Filing Status | Gross Income Over |
|---|---|
| Single | $16,100 |
| Married Filing Jointly (MFJ) | $32,200 |
| Married Filing Separately (MFS) | $16,100 |
| Head of Household | $24,150 |
These filing thresholds apply to Arizona residents for tax year 2026.
Even if you're not required to file, you should still file an Arizona return if you had Arizona income tax withheld and want to claim a refund.
How Does Married Filing Separately Work in a Community Property State?
Arizona is a community property state. If you file Married Filing Separately, special income allocation rules apply.
When filing separate Arizona returns:
- Each spouse generally reports one-half of the community income from all sources.
- Each spouse also reports any separate income.
- Community deductions and credits must be allocated using the same community property rules.
- If one spouse itemizes deductions, both spouses must itemize.
- One spouse cannot take the standard deduction while the other spouse itemizes.
Arizona also allows taxpayers to file:
- Married Filing Jointly for Arizona even if separate federal returns were filed, or
- Married Filing Separately for Arizona even if a joint federal return was filed, subject to Arizona filing rules.
However, if you elect to file Arizona separately after filing a joint federal return, the Arizona return may need to be mailed rather than electronically filed through the software.
Can I Itemize in Arizona if I Took the Federal Standard Deduction?
Yes. Arizona allows you to itemize deductions on your Arizona return even if you claimed the standard deduction on your federal return. Depending on your situation, itemizing may reduce your Arizona taxable income.
Do American Indians Have To File an Arizona Return?
Generally, yes. However, an enrolled American Indian is not required to file an Arizona return if all three of the following conditions are met:
- You are an enrolled member of an Indian tribe.
- You live on the reservation established for that tribe.
- You earned all of your income on that reservation.
If any one of these requirements is not met, normal Arizona filing requirements apply.
Do Spouses of American Indians Have To File?
Yes. If you are the spouse of an American Indian and are not an enrolled tribal member, you must file an Arizona return if you meet Arizona's filing requirements.
Additional Filing Considerations
Arizona residents are taxed on income from all sources, including out-of-state income. Certain income items, such as Social Security benefits, qualifying military retirement pay, and some U.S. government obligation interest, may be excluded when determining Arizona taxable income.
If you're unsure whether you need to file, it's usually worth reviewing your Arizona withholding and credits. Many taxpayers who are below the filing threshold still file to claim a refund.