PA Part-Year Resident Taxes: Residency Dates, PA-40 Filing, and Credits

If you moved into or out of Pennsylvania during the year, PA part-year resident tax works like this: you owe Pennsylvania’s flat 3.07% personal income tax on everything you earned while your domicile was in the Commonwealth, plus any Pennsylvania-sourced income you earned during the months you lived elsewhere. You report both amounts on a single PA-40 return, mark yourself as a part-year resident, and file by April 15.¹ Anyone with at least one dollar of Pennsylvania tax liability has to file.

The rest is getting the split right. That means fixing the date your residency started or ended, knowing which pieces of your nonresident income Pennsylvania can still reach, and avoiding a rule that can convert a part-year move back into a full-year Pennsylvania tax bill.

When Your Pennsylvania Residency Begins or Ends

Your part-year period runs from the day you change your domicile. Domicile is your permanent legal home, and Pennsylvania law allows only one at a time.² If you move into Pennsylvania meaning to make it your primary home, that date starts your resident period. If you leave to set up a permanent home in another state, the move-out date ends it.

Establishing a Pennsylvania domicile takes three things: intent to stop treating your former state as your base, intent to make Pennsylvania your base, and physical presence at a Pennsylvania address.² Giving up a Pennsylvania domicile works the same way in reverse: you need real ties to the new state. The Department of Revenue looks at where you registered to vote, where you got a driver’s license, where your bank accounts are, and how you declare residency on other official records.

Nail down the exact start and end dates within the tax year. Those dates split the year into a resident period (worldwide income is taxable) and a nonresident period (only Pennsylvania-sourced income is taxable).³

The 183-Day Statutory Residency Trap

Even if you changed your domicile out of Pennsylvania mid-year, the Commonwealth can still tax you as a full-year resident. Under the statutory residency test, you count as a Pennsylvania resident if you keep a permanent place of abode in the state and spend more than 183 days there during the tax year.⁴ A “permanent place of abode” is any house, apartment, or dwelling maintained as a household for an indefinite period, whether you own or rent it.²

This catches people who move out but hang on to the Pennsylvania house. The Department counts days from midnight to midnight, so partial days do not count. If you keep a Pennsylvania home after moving, you need more than 181 days physically outside the state to avoid statutory residency. Otherwise the state can reclassify you as a full-year resident and tax all of your income, not just the portion earned during your Pennsylvania months.²

What Income Pennsylvania Taxes in Each Period

During your resident period, Pennsylvania taxes everything, wherever it came from. A bonus from a New York employer paid while you were living in Pittsburgh is Pennsylvania income.²

During your nonresident period, only Pennsylvania-sourced income is taxable, and the sourcing rules turn on the type of income:

Wages are Pennsylvania-sourced only for work physically performed in Pennsylvania. Remote work from another state for a Pennsylvania employer is not Pennsylvania-sourced during your nonresident months.
Business income gets apportioned when the business operates both inside and outside the state.
Rental income and royalties follow the physical location of the property. A rental house in Scranton stays taxable to Pennsylvania whether you live there or not.²
Interest, dividends, and stock gains are not Pennsylvania-taxable during your nonresident period. Intangible income follows your state of domicile.²

Pennsylvania sorts everything into eight classes of income and does not follow the federal adjusted gross income model. You cannot offset a loss in one class against income in another, and there is no personal exemption or standard deduction.⁵ A business loss during your resident months will not shrink your taxable wages.

Timing of one-time events matters a lot. Sell stock the week before you become a Pennsylvania resident and the gain belongs to your old state. Sell it a week later and Pennsylvania takes 3.07%. If you know a move date is coming, that gap is worth planning around.

Apportioning Wages on Schedule NRH

If you kept working in Pennsylvania after your residency ended (or before it began), you need PA Schedule NRH to figure out how much of your compensation counts as Pennsylvania-sourced during the nonresident stretch. The schedule offers two methods, and you cannot mix them:⁶

The working-day basis divides days worked in Pennsylvania by total working days for the year, then multiplies that fraction by your gross compensation. This is the default.
The business-volume basis is used when your pay tracks directly to business generated in Pennsylvania, like commission sales.

Working days do not include weekends, holidays, or vacation. If you worked 240 days and 80 of them were in Pennsylvania, the fraction is 80/240. The Pennsylvania-sourced compensation carries to Line 1a of the PA-40.⁶

Wages Under Reciprocal Agreements

Pennsylvania has reciprocal wage-tax agreements with Indiana, Maryland, New Jersey, Ohio, Virginia, and West Virginia. Under those agreements, employee compensation is taxed only by your state of residence, not the state where the work is performed.⁷

For part-year residents, the agreement only covers the period you were actually a resident of the reciprocal state. Move from New Jersey to Pennsylvania in June and your January-through-May Pennsylvania wages fall under the agreement (New Jersey taxes them). Starting in June, Pennsylvania taxes those same wages as resident income.

Form REV-419 tells a Pennsylvania employer to stop withholding Pennsylvania tax during your nonresident period and withhold for your home state instead. You have to revoke the REV-419 within 10 days of the date you expect to become liable for Pennsylvania tax, which is typically when your domicile changes.⁷

Filing the PA-40

Every part-year resident with any Pennsylvania tax liability files the PA-40, Pennsylvania Personal Income Tax Return.¹ Fill in the “P” oval for part-year resident and write the exact dates you lived in Pennsylvania during the year.⁸

The income figure combines two pieces: all income from every source during your resident period, plus Pennsylvania-sourced income from your nonresident period. Attach PA Schedule NRH if wages had to be apportioned. The return is due April 15, the same date as the federal return.⁹

Credit for Taxes Paid to Another State

When the same slice of income is taxed by both Pennsylvania and another state, PA Schedule G-L lets you claim a resident credit and avoid paying twice. The credit applies to income tax paid to the other state on income Pennsylvania also taxed during your resident period.¹⁰

The credit is the lesser of the tax you actually paid to the other state on the overlapping income or the Pennsylvania tax on that same income at 3.07%.¹⁰ Because Pennsylvania’s rate is lower than most states’, the Pennsylvania-side calculation is usually the ceiling. On $50,000 of overlapping income, the maximum credit is $1,535, even if the other state charged you $2,500.

File a separate Schedule G-L for each state where you are claiming a credit, and attach a copy of that state’s tax return.¹⁰ In practice you usually finish the other state’s return first, then come back to the PA-40 with the paid-tax number in hand.

Estimated Payments and the Safe-Harbor Gap

If you expect to owe $430 or more in Pennsylvania tax after withholding and credits, you have to make quarterly estimated payments.¹¹ For 2026 the due dates are April 15, June 15, September 15, and January 15, 2027. If you first cross the threshold later in the year, which is common after a mid-year move, you pick up the schedule at the next installment.

Part-year filers hit a specific problem. The usual safe harbor, paying at least 100% of last year’s Pennsylvania tax, only works if you filed a full-year Pennsylvania return the prior year. A part-year return or no Pennsylvania return at all knocks out that protection.¹¹ The fallback is to make each quarterly payment cover at least 90% of the actual tax due for that installment. Miss it and the Department charges interest at 7% annually on the shortfall.¹²

Local Earned Income Tax Follows the Move

The state return is not the whole story. Nearly every Pennsylvania municipality and school district also levies a local earned income tax (EIT) on wages and net profits. When you move mid-year, you owe local tax to each jurisdiction based on income earned while you lived there. Live four months in one municipality and eight in another, and you file a local return with each collector, splitting your earnings by months of residency.

Rates vary by municipality, and the tax is collected by designated local tax collectors, not the Department of Revenue. Business losses cannot offset W-2 wages on the local return, and S-corporation pass-through income is outside local EIT. Confirm rates and filing details with the collector for each place you lived during the year.

Tax Forgiveness for Lower-Income Part-Year Filers

Part-year residents with modest incomes may qualify for Pennsylvania’s Tax Forgiveness program on PA Schedule SP, which reduces or eliminates the state income tax. Eligibility uses a “poverty income” figure that for part-year filers includes all income earned both inside and outside Pennsylvania during the year.¹³

The forgiveness percentage runs from 10% to 100% based on filing status, dependents, and eligibility income. A single filer with no dependents gets full forgiveness at or below $6,500, with partial relief up to $8,750. A married couple with two dependents gets full forgiveness up to $32,000.¹³ You cannot be claimed as a dependent on someone else’s federal return.

Proving the Move Date if You Are Audited

In an audit, you have to prove when your domicile actually changed. Statements of intent are not enough. The strongest evidence is dated: a new state’s driver’s license, voter registration, a closing date or lease start, and updated addresses on bank and financial accounts.²

Auditors look for consistency. Claiming you left Pennsylvania on July 1 while your voter registration changed in November and your driver’s license changed the following year invites questions. Update everything as close to the move date as possible. Utility records, travel receipts, and lease agreements help fill in the timeline. People leaving Pennsylvania should also cut ties that suggest the state is still home: cancel club memberships, transfer professional licenses, move personal possessions, and update wills and trusts to reference the new state.

Keep the file for at least four years. Part-year returns get more scrutiny than standard resident returns because the residency date controls which income Pennsylvania can tax, and dated documentation is your best protection.

1
Pennsylvania Department of Revenue. PA Personal Income Tax Guide – Brief Overview and Filing Requirements
2
Pennsylvania Department of Revenue. Determining Residency for PA Personal Income Tax Purposes
3
Pennsylvania Code and Bulletin. 61 Pa Code 121.8 – Method of Taxing Part-Year Residents
4
Pennsylvania General Assembly. Pennsylvania Statutes Title 72 PS Taxation and Fiscal Affairs – Section 7301
5
Pennsylvania Code and Bulletin. 61 Pa Code 121.9 – Taxable Income
6
Pennsylvania Department of Revenue. PA Schedule NRH – Non-Resident Apportionment
7
Pennsylvania Department of Revenue. REV-419 Employee’s Nonwithholding Application Certificate
8
Pennsylvania Department of Revenue. 2025 Pennsylvania Income Tax Return PA-40
9
Pennsylvania Department of Revenue. 2025 Pennsylvania Personal Income Tax Instructions
10
Pennsylvania Department of Revenue. Instructions for PA Schedule G-L
11
Pennsylvania Department of Revenue. 2026 Instructions for Estimating PA Personal Income Tax
12
Pennsylvania Department of Revenue. 2026 Interest Rate and Calculation Method for Title 72 Taxes
13
Pennsylvania Department of Revenue. Tax Forgiveness