PA State Income Tax: A Practitioner's Guide for Pennsylvania Workers

What the Pennsylvania personal income tax is — and what it isn't

The Commonwealth of Pennsylvania taxes the personal income of residents, nonresidents, estates, and trusts at a flat 3.07% against taxable income of the eight enumerated classes. That single sentence is the foundation. The rest of this guide is unpacking what "taxable income of the eight enumerated classes" means — because the PA-40 is genuinely unlike a federal Form 1040.

Two practical consequences flow from PA's design. First, "taxable PA income" rarely equals your federal Adjusted Gross Income. Second, the 3.07% number is small enough that most Pennsylvania workers can do the gross-to-net math themselves — and the pennsylvania paycheck calculator exists mainly because the layer underneath (local EIT, LST, the 0.07% UC, the Philadelphia Wage Tax) is where everything gets surprisingly complicated.

The eight classes of income — and why loss-netting fails PA taxpayers

Pennsylvania taxes eight classes of income under Section 303 of the Tax Reform Code of 1971. Each class is computed separately, and you cannot offset losses in one class against gains in another (§7303(a)). That is the single biggest reason experienced Pittsburgh investors pay a CPA.

Source: PA Department of Revenue, "Brief Overview and Filing Requirements" — eight classes language unchanged since 1971; only indexing and the 3.07% rate have moved.

Worked loss example: why you cannot net

Suppose a Pittsburgh software engineer has $80,000 in Class 1 wages, $5,000 of Class 2 interest, and a $10,000 Class 5 realized loss from selling RSUs after a stock drop. Pennsylvania does not let you put $80,000 + $5,000 − $10,000 in a single bucket. Instead:

• Class 1 taxable income: $80,000
• Class 2 taxable income: $5,000
• Class 5 net loss: $10,000 — can only offset within Class 5 against other gains

This is why a downswing doesn't shrink your PA bill the way it shrinks your federal bill. Cash-outside-W-2 income is more lightly taxed on a percentage basis in PA than it is federally, but the loss asymmetry cuts both ways. The PA DOR's own FAQ on this rule is worth bookmarking if you trade actively.

Withholding: 3.07% on every paycheck (and on 1099-NEC for nonresidents)

Every Pennsylvania employer must withhold personal income tax at the flat 3.07% rate on each payment of taxable compensation, regardless of whether the employee is a resident or a nonresident. The mechanic is genuinely simpler than federal withholding: one rate, no W-4 Steps, no annualized tables. Set the rate, multiply gross taxable wages, and remit.

Source: PA Department of Revenue Employer Withholding page; Abacus / industry 2026 withholding bulletins report the 3.07% rate unchanged for 2026.

Where withholding "feels wrong" — the year-end reconciliation

The most common paystub-vs-PA-40 mismatch isn't the state line at all; it's the local Act 32 EIT line. Employers withhold the local rate based on your resident status using the DCED PSD code register; if you moved mid-year, your last few paychecks likely under- or over-withheld. Reconcile on PA-40 with the corrections table.

Why there is no standard deduction on the PA-40

Pennsylvania explicitly does not allow the federal $16,100 standard deduction, the personal exemption, or the same set of itemised deductions Schedule A lets you claim federally. This shocks workers who move in from Ohio or New Jersey, where the state returns look more like a federal Form 1040.

The de facto "taxable compensation" number on the PA-40 is your W-2 Box 1, plus other eight-class income. Lines 4, 5, and 6 may include losses in their respective classes; the rest of the eight-class computation is just positive income summed up. For most W-2 Pennsylvania workers, that final number sits at gross annual wages minus 401(k) and pre-tax medical deductions, multiplied by 3.07%.

There is one important subtlety worth flagging: pre-tax 401(k) contributions reduce W-2 Box 1, so they reduce PA taxable wages. Roth 401(k) contributions are post-tax and do not. That is the structural reason the Does PA tax 401(k)? guide says PA is friendlier than it looks on the surface — even though there's no deduction line on the PA-40.

Tax Forgiveness (Schedule SP) — the only PA-specific credit most workers will see

Tax Forgiveness is Pennsylvania's only meaningful refundable credit for working families. It is computed on a separate schedule — PA-40 Schedule SP — and is designed to fully or partially wipe out state tax liability for filers whose eligibility income is below thresholds tied to family size. The credit phases out as eligibility income rises.

Worked Schedule SP thresholds (Tax Year 2025, filed in 2026)

The thresholds below come directly from the Department of Revenue REV-631 brochure:

Eligibility income ≠ taxable income. It also pulls back in nontaxable interest, nontaxable dividends, Social Security, Railroad Retirement, and certain other nontaxable items — so the dollar threshold at which forgiveness kicks in is usually higher than your Box 1 wages would suggest. The DOR FAQ on how to know if you qualify walks through the calculation.

The new Working Pennsylvanians Tax Credit — created in the 2025-26 state budget — layers on top of Schedule SP as a refundable credit (up to $805) for low-income workers. It is filed on the same PA-40.

Pennsylvania retirement income is mostly exempt — including Social Security

For workers aged 60 and older, Pennsylvania excludes retirement income from a 401(k), IRA, or most other qualified plans from PIT. Social Security benefits have never been taxed by PA at any age. Together these make PA unusually attractive for retirees — which is part of why the per-capita retiree population skews older than Ohio or Illinois.

Two pieces of detail often missed in summaries:

• The exemption is no-cap. There is no $40,000 ceiling on pension exclusion — once you turn 60, your qualified-plan distributions are out of the eight-class computation. (If you take early withdrawals before 60 they remain fully taxable.)
• Public pensions — e.g., PA public-school teachers under PSERS, state employees under SERS — are also fully exempt under the same rule. The PMRS retiree page confirms Retirement benefits are not subject to PA state and local taxes.

Active workers who defer into a 401(k) get the deeper benefit described above — pre-tax contributions shrink W-2 Box 1, lowering the 3.07% base. Covered in Does PA tax 401(k)?

Act 32 EIT, the LST cap, and the Philadelphia Wage Tax — three local layers PA paychecks stack

Most out-of-state tax comparisons stop at the 3.07%. Pennsylvania paychecks carry three more layers on top of the state PIT — and each appears on a different line of your paystub:

If you're comparing to neighbouring states — most commonly for job-offer math — see PA vs NJ Paycheck and PA vs NY Paycheck.

Worked example: a $60,000 W-2 employee in Allentown, single filer

The point of running this example end-to-end is to show the relative size of the PA PIT slice compared with everything else on a paycheck:

1. Gross annual: $60,000 ÷ 26 biweekly periods = $2,307.69 per paycheck.
2. PA personal income tax: 3.07% × $2,307.69 = $70.85 per check. Annual = $1,842.
3. Federal income tax withheld: roughly $233 per check per Pub. 15-T (single, default W-4). Annual = ≈$6,058. See the Federal Income Tax guide for how that number is built.
4. FICA: 6.2% OASDI on $2,307.69 = $143.08 + 1.45% Medicare = $176.54 per check.
5. Act 32 EIT (Allentown resident): 1.0% resident rate × $2,307.69 = $23.08 per check.
6. Local Services Tax: $52 / year, $1 per biweekly check, typically collected only in the first 26 paychecks of the year. = $1.00 per check (then $0).
7. PA UC (SUI): 0.07% × $2,307.69 = $1.62 per check.

Total deductions on one biweekly Allentown paycheck: ≈$473.95. Of that, the PA PIT share is $70.85, or ~14.9% of the total deduction — meaningfully smaller than the federal income tax ($233) and approaching the FICA contribution ($176.54). The Allentown $40K breakdown is a useful baseline if you want to rerun the math.

Numbers above match the PA paycheck calculator v1.0 / 2026 tax year. Annual tax owed on $60,000 single (no Tax Forgiveness) is exactly 3.07% × $60,000 = $1,842. Adding a pre-tax 401(k) of 5% of wages ($3,000) cuts that to 3.07% × $57,000 = $1,749, an annual savings of $93.

Filing the PA-40: due April 15, 2026, with a six-month PA-aligned extension

Tax Year 2025 PA personal income tax returns (PA-40) are due April 15, 2026. If that date falls on a weekend or federal holiday it moves to the next business day. If you owe tax (the usual case for anyone whose withholding under-shot the 3.07%), the extension to file is not an extension to pay — interest and late-payment penalties still accrue from April 15.

• Extension path: The PA-40 honors the federal extension. If Form 4868 extends your federal 1040 to October 15, 2026, the PA-40 is automatically extended to the same date — check the "extension" box on the PA-40 when it is filed.
• Quarterly estimates: Self-employed Pennsylvanians and higher-income W-2 filers with low withholding file PA-40 ES on April 15, June 15, September 15, and January 15, matching federal estimated-tax cadence.
• Refund methods: Direct deposit (fastest; ~3 weeks), paper check (~6-8 weeks), or applied to Tax Year 2026 estimated tax.
• Working Pennsylvanians Tax Credit: Filed on the same PA-40, separate Schedule, refundable (up to $805 for low-income workers in Tax Years 2025 and 2026).

Frequently asked questions

Primary sources

• PA Department of Revenue — Personal Income Tax — 3.07% rate, eight classes of income, withholding framework.
• PA DOR — Personal Income Tax Rates — Confirms 3.07% rate from 2004 → present.
• PA DOR — Tax Forgiveness — Schedule SP overview and family-size examples.
• PA DOR REV-631 (Tax Forgiveness brochure, PDF) — Eligibility income thresholds and phase-out bands.
• PA DOR — Brief Overview and Filing Requirements — Eight classes, due-date rules, extension mechanics.
• PA DCED Act 32 — Local Income Tax Information — EIT rate register, PSD codes, employer withholding guidance.
• City of Philadelphia — Wage Tax (employers) — Confirms 3.735% resident / 3.425% non-resident effective July 1, 2026.
• PA DOR — Employer Withholding — Confirms 3.07% flat withholding on compensation, including nonresidents.