Income tax
Pennsylvania state income tax (2026)
Pennsylvania uses a flat income tax rate of 3.07% on all taxable income above the standard deduction. There are no brackets — every dollar of taxable income is taxed at the same rate.
Pennsylvania · 1099 quarterly taxes · 2026
1099 Quarterly Taxes in Pennsylvania (2026)
If you earn 1099 income in Pennsylvania, your quarterly tax bill splits across two agencies: the IRS for federal, and Pennsylvania Department of Revenue for state. Pennsylvania uses a flat 3.07% income tax — simpler math than progressive states, but the safe-harbor rules still apply on both sides.
How to pay
How to pay Pennsylvania estimated taxes
Federal estimated tax due dates (April 15, June 15, September 15, 2026, and January 15, 2027) apply to your Pennsylvania state estimated payments as well — most states piggyback on the federal schedule. Pay Pennsylvania taxes through the Pennsylvania Department of Revenue's online portal: mypath.pa.gov. You can also mail Form REV-414 with a check.
Penalties
Pennsylvania safe harbor and underpayment penalty
Federal and state estimated tax safe harbors work in parallel for Pennsylvania freelancers. Hit the federal safe harbor (90% of current-year federal tax OR 100% of prior-year federal tax — 110% if your prior-year AGI exceeded $150,000) and you avoid the IRS underpayment penalty on Form 2210.
For Pennsylvania state estimated taxes, most filers can match the federal safe harbor approach by paying 100% of last year's Pennsylvania tax in four equal quarterly installments. Pennsylvania's underpayment penalty is calculated on the state's equivalent of Form 2210 — the PADOR can assess interest plus a flat penalty on the under-paid amount.
Practical advice for Pennsylvania self-employed taxpayers: pay both federal and state estimates on the same quarterly schedule (April 15, June 15, September 15, January 15). File your federal payment via IRS Direct Pay and your state payment via Pennsylvania myPATH. Keep records of every payment — both agencies can request proof if the safe-harbor math is challenged later.
Estimated tax
Paying Pennsylvania estimated taxes — what to know
Four procedural quirks of Pennsylvania estimated taxes for self-employed filers:
- Use Form REV-414. Form REV-414 is Pennsylvania's estimated tax voucher for self-employed individuals. You can file via PADOR's online portal (Pennsylvania myPATH) for free direct-debit payments, or mail a check with the paper voucher. The online portal returns instant confirmation; paper vouchers take 7-10 business days to post.
- Pennsylvania's top marginal rate is 3.07%. Plan your quarterly estimates by applying your effective Pennsylvania rate (usually lower than 3.07% for most freelancers, but higher than zero) on top of your federal tax. The state portion typically lands between 2% and 7% of net SE income depending on bracket position.
- State return starts from federal AGI. Most Pennsylvania freelancers don't realize that the state return uses federal AGI as the starting point, then applies state-specific modifications. Get your federal Schedule C right first — every error there flows downstream to your Pennsylvania return.
- Pennsylvania contact: Pennsylvania Department of Revenue. If you have a specific question about your state estimated taxes — payment confirmations, address corrections, refund tracking — go directly to PADOR via their online portal.
Pennsylvania-specific quirk
Pennsylvania-specific quirk freelancers miss
Pennsylvania has one of the lower flat rates (3.07%) of any state with an income tax — and unusually does NOT allow most federal deductions including the standard deduction, itemized deductions, or QBI. PA is a 'gross income' state: most income types are taxed at the flat rate without offsetting deductions. Philadelphia residents owe an additional 3.75% Wage Tax; Pittsburgh adds 1%.
Common filing mistakes
Common filing mistakes Pennsylvania freelancers make
Five common errors that bite Pennsylvania freelancers at filing time:
- Paying federal estimates but skipping state. The federal safe harbor doesn't protect you from a Pennsylvania state underpayment penalty. Both calendars need to be paid on the same quarterly schedule.
- Forgetting the 15.3% SE tax. SE tax (12.4% Social Security + 2.9% Medicare on 92.35% of net SE earnings) is in addition to federal income tax AND Pennsylvania state tax. First-year freelancers regularly underbudget by roughly this 15.3% margin.
- Using gross income instead of net for estimates. Both federal and Pennsylvania tax apply to your net SE income after deductions, not your gross receipts. Skipping the deductions netting step inflates your estimate by 20-40%.
- Missing the Pennsylvania-specific quirk. Pennsylvania has a flat 3.07% rate, but PA does NOT allow the half-SE-tax deduction. This catches first-year filers because federal-tax software often doesn't surface state-specific quirks.
- Not tracking conformity differences. PA does NOT allow QBI deduction. PA does NOT allow most federal business deductions — only direct business expenses on Schedule C-PA. Misalignments between federal and state taxable income are the most common source of surprise state tax bills.
Deductions
Common deductions for Pennsylvania freelancers
- Pennsylvania allows the same business expenses (home office, mileage, software, etc.) as federal.
- Half of SE tax is deductible federally; check Pennsylvania's rules for state conformity.
- PA does NOT allow QBI deduction. PA does NOT allow most federal business deductions — only direct business expenses on Schedule C-PA.
- Self-employed health insurance premiums are deductible federally.