Pennsylvania Prediction Market Taxes: Income Classes and Why Losses Don't Cross Over

Pennsylvania taxes prediction market profit at a flat 3.07%, but a loss in a losing year is usually wasted. The state splits income into eight classes, and a loss in one class can't offset another or carry to a different year. So a Kalshi or Polymarket loss won't reduce your wages for Pennsylvania purposes. Unlike many states, though, Pennsylvania lets gambling losses offset same-year winnings directly, which removes much of the gambling penalty.

OddsFile is software, not tax advice. The IRS has not issued guidance on how prediction-market contracts are taxed, and we found no Pennsylvania guidance either. This article explains the options and the sources behind them; a tax professional can tell you which position fits your situation.

How Pennsylvania's system differs

Pennsylvania doesn't start from federal AGI. It taxes eight separate classes of income at a flat rate. A gain in one class can't be offset by a loss in another, and gains or losses can't be carried back or forward to another year. The rate is 3.07%.

Two classes matter here:

Pennsylvania also doesn't distinguish long-term from short-term gains, so a long hold has no state benefit.

Gambling works better here

The department's guide says gambling is a separate class and that wager costs may be deducted from winnings received in the same tax year. A partnership schedule repeats that winnings and losses can be offset within the class. You don't need to itemize, and there's no 90% rule in the pages we read, so the federal cut doesn't appear to carry across. That's our reading. The department hasn't addressed the 2025 federal change in the guidance we found.

Expenses are another matter. The guide says no expenses tied to gambling income are deductible, and it lists parking, postage, entry fees, meals, lodging and travel as examples. You must keep detailed records, and you bear the burden of proving costs. It cites 61 Pa. Code §103.17.

Worked example

A Pennsylvania resident has $20,000 of winning markets, $15,000 of losing markets, a $5,000 net profit and $80,000 of wages.

Either way it's 3.07% of the net, so unlike Illinois, gambling has no built-in state penalty. Federal tax is another story.

Losing years

Change the year to $10,000 of wins and $16,000 of losses, a $6,000 net loss.

A loss on the Pennsylvania return can reduce your other property gains that year, say on stock. It can't cross into your wages, and it's gone if you have no gains. So if a loss year is followed by a gain year, you pay Pennsylvania tax on the full gain with no credit for the loss.

Pennsylvania's guide notes that a gambling loss can't exceed winnings either, so a net gambling loss has no effect.

Interaction between classes

Suppose you sold stock at a $4,000 loss and had a $5,000 Polymarket gain.

So classification can matter in Pennsylvania, even though the rate doesn't change. For a trader with other investment activity, the property class may be better. In the other direction, gambling-class losses can only be used against gambling winnings.

Whether Pennsylvania would accept the same treatment you use federally isn't something it has addressed. The state's own rules decide what class income falls in. A preparer should confirm your position.

Interest and rewards

Interest is its own Pennsylvania class. Kalshi interest would go there, taxed at 3.07%. A net loss in another class can't reduce it. Rewards and credits don't have a direct rule; ask your preparer which class they fit.

Nonresidents

The guide says nonresidents are taxed only on gambling winnings sourced to Pennsylvania, such as from a wager placed in the state. Nonresidents also aren't taxed on gains from intangible property, and can't use losses from it. For an online trader, sourcing is a question for a preparer.

Local taxes

Pennsylvania local earned income taxes generally apply to wages and business income, not investment gains. Check your local tax office if you run trading as a business.

What to do

1. Choose your federal treatment, then check which PA class it implies.
2. Keep gambling-class and property-class items apart.
3. Net within each class.
4. Don't enter a carryforward on the state return.
5. Make estimated payments if needed.
6. Save detailed wager records, because you carry the burden of proof.

Run the free OddsFile check: paste a Polymarket or Hyperliquid address and see your 2026 P&L under each treatment, no signup. For a federal comparison, see gambling vs capital gains for event contracts.

FAQ

Does Pennsylvania tax Kalshi winnings?

Yes, at 3.07%, in the class that fits your position.

Can I carry a Pennsylvania loss to next year?

No. Pennsylvania doesn't allow gains or losses to be carried back or forward between years.

Does the federal 90% limit apply in Pennsylvania?

Pennsylvania's own rule lets wager costs offset same-year winnings. We found no guidance applying a 90% limit.

Do I need to itemize in Pennsylvania?

No. Pennsylvania has no general itemized deductions. Gambling losses offset winnings directly within the class.