Pennsylvania has one of the most misunderstood tax systems in the country. Its 3.07% flat income tax rate is the second-lowest in the nation among states with a broad income tax — but the absence of a standard deduction, personal exemption, and most common itemized deductions means Pennsylvanians can’t reduce their taxable income the way residents of other states can.
The Most Important Thing PA Taxpayers Get Wrong
Many Pennsylvania residents assume their PA state return works like their federal return — with a standard deduction and itemized deductions for mortgage interest and property taxes. None of that applies in Pennsylvania. The PA-40 does not have a standard deduction, does not allow mortgage interest, and does not allow real estate property taxes as a deduction.
What Pennsylvania Actually Taxes
Pennsylvania taxes eight classes of income, and losses in one class cannot offset income in another:
- Compensation (wages, salaries, tips)
- Interest
- Dividends
- Net profits from a business (Schedule C equivalent)
- Net gains from the sale of property
- Net income from rents, royalties, copyrights, and patents
- Income from estates and trusts
- Gambling and lottery winnings
What IS Deductible on a PA Return
1. Unreimbursed Employee Business Expenses (Schedule UE)
While the federal government eliminated the unreimbursed employee expense deduction in 2018, Pennsylvania still allows W-2 employees to deduct unreimbursed ordinary and necessary business expenses directly from compensation on the PA-40. There is no floor and no cap. This includes tools, uniforms, work-required home office, professional dues, and work-related travel.
2. PA 529 College Savings Contributions
Contributions to a Pennsylvania 529 college savings plan are deductible on the PA return — up to the annual gift tax exclusion amount per beneficiary. Out-of-state 529 plans do not qualify.
3. Business Expenses (Self-Employed)
Self-employed taxpayers deduct ordinary and necessary business expenses from net profits, consistent with federal Schedule C treatment. Note: PA does not allow a net operating loss carryforward.
What Is NOT Deductible on a PA Return
- Mortgage interest — not deductible on PA state return
- Real estate property taxes — not deductible on PA state return
- Charitable contributions — not deductible on PA state return
- Medical expenses — not deductible on PA state return
- Standard deduction — Pennsylvania has none
- Personal or dependent exemptions — Pennsylvania has none
Pennsylvania’s Retirement Income Exemption
Social Security benefits, pension payments from a qualifying employer plan, IRA distributions after age 59½, 401(k) distributions, and military retirement pay are all exempt from Pennsylvania income tax. This makes Pennsylvania one of the most retirement-friendly states in the country from a tax standpoint.
The Property Tax/Rent Rebate Program
While Pennsylvania doesn’t allow a property tax deduction on the state return, it offers the Property Tax/Rent Rebate (PTRR) program for eligible seniors (65+), widows and widowers (50+), and people with disabilities (18+). Rebates range up to $1,500 (with supplemental kicker in Philadelphia, Pittsburgh, and Scranton).
PA vs. Federal: Side-by-Side
| Item | Federal (2025) | Pennsylvania State |
|---|---|---|
| Tax rate | 10%–37% progressive | 3.07% flat |
| Standard deduction | $15,000 / $30,000 | None |
| Mortgage interest | Deductible (Schedule A) | Not deductible |
| Property taxes | Deductible (SALT cap $10K) | Not deductible |
| Unreimbursed employee expenses | Not deductible (post-2018) | Deductible (Schedule UE) |
| Retirement income | Taxable (most types) | Exempt |
| Social Security | Up to 85% taxable | Exempt |
| 529 contributions | No federal deduction | Deductible (PA 529 only) |
This guide is for educational purposes only and does not constitute tax advice. PA tax rules change — consult a licensed PA CPA or the PA Department of Revenue for advice specific to your situation.