Arizona Part-Year Resident Tax Form 140PY: Step-by-Step Filing Guide

Title tag: Arizona Part-Year Resident Tax Form (140PY) | KR Taxes Meta description: Moving in or out of Arizona this year? File Form 140PY. See how to split income, prorate deductions, and avoid double tax.

If you moved into or out of Arizona during the tax year, you're not a full-year resident and you're not a nonresident either. You're a part-year resident, and Arizona has a specific form for that: Form 140PY. This guide walks through who has to file it, exactly what income gets taxed, how the proration math works, and the mistakes that most often trip up business owners and real estate investors splitting a year between two states.

Key takeaways

• You're a part-year resident if you moved into Arizona intending to become a resident, or moved out of Arizona intending to give up Arizona residency, at some point during the tax year.
• Part-year residents pay Arizona tax on all income earned during the Arizona resident period, plus any Arizona-sourced income earned during the nonresident portion of the year.
• Arizona's flat 2.5% tax rate applies to part-year residents the same as everyone else; what differs is how much income and how much deduction gets counted.
• Deductions, exemptions, and the standard deduction must be prorated using the Form 140PY allocation ratio (Arizona income divided by federal adjusted income, capped at 1.00).
• If you're filing jointly with a nonresident spouse, you cannot use Form 140PY. Arizona requires that joint return to be filed on Form 140NR instead.
• Rental income from Arizona property stays taxable to Arizona regardless of where you live, even after you've moved out and become a nonresident.
• A credit for taxes paid to another state (Form 309) exists to prevent the same income from being taxed twice during a mid-year move.

Who has to file Form 140PY

Arizona determines residency by domicile, not simply by how many days you spent in the state. A.R.S. § 43-104 defines a resident as an individual domiciled in Arizona, or anyone who spends more than nine months of the tax year in the state (a presumption that can be rebutted with evidence the presence was temporary). Domicile is your true, fixed, permanent home, the place you intend to return to after any temporary absence.

You're a part-year resident, and you use Form 140PY, if either of these happened during the year:

• You moved into Arizona with the intent of establishing Arizona as your permanent home, or
• You moved out of Arizona with the intent of giving up Arizona residency

Simply owning a home in Arizona, or spending part of the year here without the intent to make it your permanent home, doesn't automatically make you a part-year resident. Intent matters, and Arizona Department of Revenue guidance notes that the specific circumstances of each case, not a single bright-line test, determine the outcome.

What income Arizona actually taxes

This is where most confusion happens, and it's governed directly by A.R.S. § 43-1097, the statute covering a change of residency status mid-year. The rule works the same whether you're moving in or moving out, just applied to opposite halves of the year:

• During the period you were an Arizona resident, all of your income is taxable to Arizona, no matter where it was earned, the same rule that applies to full-year residents.
• During the period you were not an Arizona resident (before you moved in, or after you moved out), only income from Arizona sources is taxable: wages for work performed in Arizona, income from an Arizona-based business, and income from Arizona real property.

A few specific income types deserve their own mention. Rental income from Arizona property is taxable to Arizona for the entire year no matter your residency status, since it's Arizona-sourced income by definition. Pension income is only taxed for the portion received while you were an Arizona resident, though Arizona allows a subtraction of up to $2,500 for government pensions from Arizona or its political subdivisions, or up to $3,500 for military retired pay, for the resident-period portion. If you worked for the same employer before and after your move and your W-2 doesn't separate Arizona wages from out-of-state wages, you'll have to calculate the split yourself using pay stubs or employer records showing your work location by date.

Completing Form 140PY: the allocation math

Form 140PY starts, like every Arizona individual return, from your federal adjusted gross income, then works through a series of Arizona-specific adjustments and an allocation calculation that's unique to part-year returns:

1. Federal adjusted gross income is your starting point, pulled directly from your federal return.
2. Arizona-source income during the resident period is entered separately, along with any Arizona-sourced income earned during the nonresident portion of the year.
3. Arizona additions and subtractions adjust that income for items Arizona treats differently than the federal return, the same categories that apply to full-year residents.
4. The allocation ratio divides your Arizona income by your federal adjusted income, capped at 1.00. This ratio is the mechanism that prorates everything downstream: it determines what percentage of your exemptions and standard deduction you're allowed to claim, since you're only entitled to a full year's worth of deductions if all of your income was taxable to Arizona in the first place.
5. Exemptions and the standard deduction are then prorated using that ratio. If you elect the standard deduction and made charitable contributions during your Arizona residency (or from Arizona sources during your nonresident period), you can increase the standard deduction by 34% of qualifying contributions using the worksheet in the Form 140PY instructions.
6. The flat 2.5% tax rate applies to the resulting Arizona taxable income.
7. Credits and payments, including withholding and estimated payments, reduce the tax owed to arrive at a final balance due or refund.

If you itemize instead of taking the standard deduction, Arizona requires a separate Itemized Deductions for Part-Year Residents (Schedule A(PY)) form to make the Arizona-specific adjustments to your federal Schedule A amounts.

The nonresident-spouse filing rule

Here's a rule that catches a lot of couples off guard: if you're a part-year resident filing a joint return with a spouse who is a full-year nonresident (never lived in Arizona at all during the year), Arizona does not let you file that joint return on Form 140PY. You're required to file jointly on Form 140NR instead, the nonresident return, even though one spouse technically qualifies as a part-year resident. Filing status on your Arizona return can end up different from your federal filing status specifically because of this rule, so it's worth checking before you assume the form you used last year is still the right one.

Avoiding double taxation on the same income

Moving mid-year creates an obvious risk: your former state and Arizona both taxing the same income for the period around your move. A.R.S. § 43-1096 and Arizona's guidance on nonresident and part-year filing address this directly through a credit mechanism, claimed on Arizona Form 309, for tax paid to another state on income that's also taxed by Arizona. The credit is proportional: it's limited to the share of your income that was actually taxed by both states, not a blanket offset for everything you paid elsewhere. If you moved between Arizona and a state with its own part-year or nonresident credit system, check both sides, since claiming the credit correctly on one return sometimes depends on how the other state's return was filed.

Deadlines, extensions, and penalties

Form 140PY follows the same calendar as every other Arizona individual return: due April 15, with an automatic extension to October 15 available either by filing Arizona Form 204 or by using your federal extension (Form 4868) and checking the corresponding extension box on your Arizona return. An extension gives you more time to file, not more time to pay; interest and penalties on unpaid tax continue to accrue from the original due date. Two separate penalties can apply: a late-filing penalty of 4.5% of the unpaid tax per month or partial month (capped at 25%) under Arizona Revised Statutes § 42-1125(D), and a separate late-payment penalty of 0.5% per month (capped at 10%) if the tax itself isn't paid on time even when the return was filed on schedule. If you expect to owe $1,000 or more in Arizona tax after withholding and credits, you're also expected to make quarterly estimated payments to avoid an underpayment penalty.

Where business owners and real estate investors get tripped up

A few patterns come up repeatedly with part-year returns for business owners and investors in particular:

• Rental property doesn't follow you. If you owned Arizona rental property before your move and kept it after leaving, that rental income stays Arizona-source income for the entire year, taxable whether you're a resident or not for the nonresident portion of the year. Expenses like mortgage interest, property tax, and depreciation are still deductible, but only in proportion to the income being reported.
• Pass-through business income needs the same sourcing analysis as wages. If you own an S-corp, partnership, or sole proprietorship with operations both inside and outside Arizona, the income needs to be split the same way wages would be, based on where the business activity actually occurred, not just where you happened to live when it was received.
• Community property rules complicate separate filing. Arizona is a community property state. If you and your spouse file separate Arizona returns and one of you is a part-year resident while the other maintains a different residency status, community property allocation rules add another layer to an already complex return.

Given how much these edges depend on your specific facts, this is a return worth having reviewed rather than filed on autopilot the first year you split residency, especially if rental property, business income, or a significant asset sale is involved.

Form 140PY exists because Arizona's tax code recognizes that a mid-year move creates a genuinely different tax situation than either a full-year resident or a full-year nonresident faces. The mechanics, splitting income by residency period, prorating deductions with the allocation ratio, and claiming credit for tax paid elsewhere, aren't complicated individually, but they compound quickly if your income sources (rental property, a business, deferred compensation) don't split cleanly along the date you moved.

Moved into or out of Arizona this year and want your part-year return handled correctly the first time? K&R's Strategic Tax Advisory and Preparation team works with clients through exactly this kind of mid-year residency change regularly. Contact K&R to review your specific situation before you file.

Frequently asked questions

Do I use Form 140PY or Form 140NR if I moved to Arizona partway through the year? Form 140PY, as long as you're filing as a part-year resident on your own or jointly with a spouse who was also an Arizona resident for at least part of the year. If your spouse was a full-year nonresident, you're required to file the joint return on Form 140NR instead, even though you personally qualify as a part-year resident.

Does Arizona tax the income I earned in my old state before I moved here? No, not if you weren't an Arizona resident yet when you earned it, unless that income was sourced from Arizona (for example, Arizona rental income received before your move). Income earned entirely outside Arizona, from an out-of-state job, before you established Arizona residency generally isn't taxable to Arizona.

How do I know what percentage of my standard deduction I can claim? Form 140PY's allocation ratio, your Arizona income divided by your federal adjusted gross income, capped at 1.00, is applied to your exemptions and standard deduction. The higher the proportion of your total income that's taxable to Arizona, the closer your deduction gets to the full-year amount.

I sold a rental property in Arizona after I moved out of state. Is that gain taxable to Arizona? Generally yes. Gain from the sale of Arizona real property is Arizona-source income regardless of where you live when the sale closes, since the income is sourced to the location of the property, not your residency at the time of sale.

What if I moved states more than once in the same year? Arizona's part-year rules apply based on your actual residency periods, however many there were. If you moved into Arizona, then out, then back in during the same tax year, you'll need to carefully document each residency period and the income attributable to each, since the standard single-move worksheets in the instructions assume one transition rather than several.

Can I e-file Form 140PY? Yes, Form 140PY can be filed electronically through Arizona's e-file program or commercial tax software, the same as the full-year resident and nonresident forms. Paper filing remains an option if you prefer it or if your specific situation isn't supported by your software's part-year module.

Internal links used: Strategic Tax Advisory and Preparation (services), Accounting & Business Performance (services), The Best Time for Tax Planning: Today, Cost Segregation Studies for Rental Real Estate, Contact Us. All verified live via direct fetch or matching live search content this session, July 4, 2026.

External gov sources used (10): A.R.S. § 43-104 (residency definitions, azleg.gov); A.R.S. § 43-1097 (change of residency status, azleg.gov); A.R.S. § 43-1096 (credit for taxes paid by nonresident, azleg.gov); Arizona Form 140PY fillable form page (azdor.gov); Arizona Part-Year Resident Personal Income Tax Booklet (azdor.gov); Itemized Deductions for Part-Year Resident, Schedule A(PY) (azdor.gov); Determining Filing Status for Nonresidents and Part-Year Residents (azdor.gov); Arizona Department of Revenue Individual Income Tax Information page (azdor.gov); Arizona Form 204 filing extension page (azdor.gov); Arizona Form 140NR fillable form page (azdor.gov). All verified live via search/fetch, July 4, 2026.