Meta title: Arizona Form 140NR Instructions (2026) | KR Taxes
Meta description: Line-by-line instructions for filing Arizona Form 140NR as a nonresident in 2026, including which income to include and credits to claim.
Arizona Form 140NR Instructions: Filing as a Nonresident in 2026
If you earned income from Arizona sources in 2025 but didn't live in Arizona, you generally file Form 140NR, the Nonresident Personal Income Tax Return, rather than the resident Form 140. The form only taxes your Arizona-source income, calculated through a specific ratio, not your entire federal income. Here's how the form actually works, line by line, for the 2025 tax year (returns filed in 2026).
Key Takeaways
- A nonresident is anyone whose domicile isn't in Arizona, per A.R.S. § 43-104, and files Form 140NR to report only Arizona-source income.
- Arizona gross income for a nonresident includes only the portion of federal adjusted gross income sourced to Arizona, under A.R.S. § 43-1091, not your total federal income.
- The Arizona income ratio (Arizona-source income ÷ federal adjusted gross income) determines how much of your standard or itemized deduction you can claim, calculated on lines 23 through 27 of the form.
- The 2025 return is due April 15, 2026, with an automatic 6-month extension to October 15, 2026 available if you file Arizona Form 204 or use your federal extension.
- Real estate investors and business owners with Arizona-source income who live elsewhere still need to file 140NR, even if their home state has no reciprocity arrangement with Arizona.
Who needs to file Form 140NR
The Arizona Department of Revenue defines a nonresident as "every individual other than a resident" under A.R.S. § 43-104. You're a nonresident if your permanent domicile is outside Arizona, even if you spent part of the year physically present in the state, as long as you didn't establish Arizona as your permanent home.
Nonresidents use Form 140NR if they have Arizona-source income and meet the filing threshold. For 2025, the underlying gross income thresholds are $15,750 for single filers, $31,500 for married filing jointly, $15,750 for married filing separately, and $23,625 for head of household, but nonresidents don't apply these thresholds directly. Instead, you prorate them using your Arizona income ratio, since the thresholds are built for full-year residents whose entire income is taxable in Arizona.
There's one narrow exception worth knowing: wages earned by a nonresident temporarily in Arizona solely to perform disaster recovery work during a declared disaster period aren't treated as Arizona-source income at all.
Filing status and residency boxes
Form 140NR's residency section asks you to check the box that matches your situation: nonresident, nonresident active military, or composite return (verify exact box numbers against the current form face, as ADOR occasionally renumbers sections between tax years). Your filing status, single, married filing joint, married filing separate, or head of household, generally has to match your federal filing status, with one key twist: if you qualify as married for federal purposes, you must file Arizona as either married filing joint or married filing separate, even if your spouse is a full-year resident of another state entirely. If you're filing jointly with a resident or part-year resident spouse, the department's ruling ITR 14-1 covers how to handle that combination.
Reporting your income
The income section of Form 140NR mirrors the structure of the resident form and asks you to report amounts in two columns: federal and Arizona. The form groups wages, interest, dividends, and other income categories in the lines leading up to the total, with the specific line assignments for each income type consistent with recent years' forms. For each line, the Arizona column should include only the portion of that income sourced to Arizona, not your total from all sources. Because ADOR does update line placement occasionally, cross-check the exact line for your income type against the current-year form face before filing rather than relying on last year's layout from memory.
For real estate investors, this typically means rental income and gain from the sale of Arizona property go in the Arizona column, while wages earned working remotely from another state generally don't, even if your employer is based in Arizona.
The Arizona income ratio: the mechanism that matters most
This is the part of the form that trips people up. After totaling your income, the form has you subtract adjustments and exemptions separately in both the federal and Arizona columns (lines 23 and 24), then divide your Arizona-column result by your federal-column result on line 27. That fraction, rounded to three decimal places and capped at 1.000, is your Arizona income ratio. It determines what percentage of your standard deduction, or your itemized deductions if you use Schedule A(NR), you're allowed to claim against your Arizona income.
In plain terms: if 30% of your total federal income was Arizona-source, you generally get to claim 30% of the deduction you'd otherwise be entitled to. This ratio is also what the Arizona Department of Revenue uses to determine whether you meet the filing threshold in the first place, since the thresholds published for residents get prorated by this same percentage for nonresidents.
Deductions: standard vs. itemized
Nonresidents can take either the standard deduction or itemize, same as residents, but both are scaled by your income ratio. If you itemize, you start from your federal Schedule A amounts and complete Schedule A(NR), which walks through the same proration: medical and dental expenses, mortgage interest, and other itemized categories all get multiplied by your income ratio before they reduce your Arizona taxable income.
Claiming a credit for taxes paid to another state
If your home state also taxes the same income Arizona is taxing (common for real estate investors with property in a state that doesn't have a reciprocity arrangement with Arizona), you may be able to claim the Credit for Taxes Paid to Another State or Country using Form 309. This is a separate calculation from the income ratio and applies to prevent double taxation on income Arizona and another state both have a legitimate claim to.
Electing to report small business income separately
If you have qualifying small business income, Arizona allows you to elect to report it on Form 140NR-SBI instead of the main form, generally to take advantage of Arizona's small business income tax structure. The department's Publication 712, Summary of Arizona Small Business Income and Taxation, covers the mechanics. If you make this election, that income comes out of your regular Form 140NR entirely, so it isn't double-counted.
Due dates, extensions, and penalties
The 2025 Form 140NR is due April 15, 2026, for calendar-year filers. If you use a federal extension (Form 4868) or file Arizona Form 204, you get an automatic 6-month extension to October 15, 2026, though an extension only extends your time to file, not your time to pay. Filing late triggers a penalty of 4.5% of the unpaid tax for each month or partial month the return is late, capped at 25%, under A.R.S. § 42-1125(D). Interest accrues on unpaid tax from the original due date regardless of any extension.
A common point of confusion: this isn't the federal nonresident alien form
Form 140NR is easy to confuse with the IRS's Form 1040-NR, but the two are entirely different documents addressing different situations. The IRS's Form 1040-NR is for nonresident aliens, people who aren't U.S. citizens or residents for federal tax purposes, reporting U.S. income at the federal level. Arizona's Form 140NR, by contrast, is for anyone, U.S. citizen or not, whose permanent home is outside Arizona but who earned Arizona-source income. A U.S. citizen who lives in California and owns rental property in Arizona files Arizona Form 140NR and a regular federal Form 1040, never Form 1040-NR.
Where this fits into your broader filing picture
Filing Form 140NR correctly depends on accurately separating Arizona-source income from everything else, which is exactly where multi-state filers and real estate investors tend to run into trouble. If you're managing rental property, business interests, or investment income across state lines, this is one piece of a larger tax planning strategy rather than a form you can fill out in isolation from the rest of your filing.
Keeping the records this form actually requires
Because every income line on Form 140NR asks you to separate Arizona-source amounts from your total, your bookkeeping needs to track location, not just totals, throughout the year. Our Accounting & Business Performance team can help set up that tracking so the income ratio calculation is a lookup, not a reconstruction project every April.
Ready to file your Arizona nonresident return?
Form 140NR's income ratio calculation, deduction proration, and small business income election all interact with each other, and getting one piece wrong tends to throw off the rest of the return. Our team works with nonresident filers, including high earners with multi-state income, every filing season.
Schedule a free consultation to get your 140NR filed correctly the first time.
Frequently Asked Questions
Who has to file Arizona Form 140NR?
Anyone whose permanent domicile is outside Arizona but who earned Arizona-source income meeting the prorated filing threshold. This includes out-of-state real estate investors with Arizona rental property, business owners with Arizona-source income, and employees who worked in Arizona temporarily.
How is Arizona-source income different from total income on Form 140NR?
Arizona-source income is only the portion of your income connected to Arizona, such as wages for work performed in Arizona or income from Arizona property. Your total federal income appears in a separate column and is used only to calculate your Arizona income ratio, not to determine your Arizona tax directly.
What is the Arizona income ratio and why does it matter?
It's the percentage of your total federal income that came from Arizona sources, calculated by dividing your Arizona-column income by your federal-column income. Arizona uses this ratio to prorate your standard or itemized deduction, so it directly affects how much of your income is actually taxed.
Can I claim the standard deduction on Form 140NR, or do I have to itemize?
You can choose either, just like residents. If you itemize, you'll complete Schedule A(NR), which applies your income ratio to each itemized category rather than allowing the full federal amount.
What happens if I don't file Form 140NR by the deadline?
Arizona charges a late filing penalty of 4.5% of the unpaid tax per month or partial month late, up to a maximum of 25%, plus interest on any unpaid balance from the original due date. An extension only pushes back your filing deadline, not your payment deadline.
Is Arizona Form 140NR the same as the federal Form 1040-NR?
No. Form 1040-NR is an IRS form for nonresident aliens reporting U.S. income federally. Arizona Form 140NR is a state form for anyone, regardless of citizenship, whose permanent home is outside Arizona but who has Arizona-source income. Many filers need a regular federal Form 1040 alongside Arizona's 140NR.
