What tax rate do you pay on Kalshi gains?
There's no single tax rate for Kalshi gains, and anyone who tells you a clean number is skipping the hard part. Your rate depends on which of three treatments applies, and that question is genuinely unsettled.
This guide walks through what each treatment means for your effective rate, plus the state tax that stacks on top. It is educational, not tax advice.
- Event-contract gains can be taxed three ways, and each implies a different rate.
- Under ordinary treatment, your whole net gain is taxed at your regular marginal rate, the same bracket as your wages.
- If Section 1256 applies, 60 percent of your gain is taxed at long-term capital-gains rates and 40 percent at short-term, regardless of holding period.
- Gambling treatment also taxes winnings at your ordinary rate, but with a sting: for tax years beginning after the end of 2025, only 90 percent of losses are deductible against winnings, which can push your effective rate above your bracket on a breakeven year.
- Most states tax the gain as ordinary income on top of the federal bill, from zero in no-income-tax states to more than ten percent at the top.
- ContractTax computes your result under all three treatments and adds your state, so instead of guessing at a rate you see your actual federal-plus-state tax in dollars for each path.
It depends on the treatment
Event-contract gains can be taxed three ways, and each implies a different rate. So the honest answer to what rate you pay is: it depends on the treatment you and your preparer take, which is itself contested for prediction-market contracts.
Understanding the three is the only way to estimate your real rate.
Ordinary income: your marginal rate
Under ordinary treatment, your whole net gain is taxed at your regular marginal rate, the same bracket as your wages. For most traders that's somewhere in the 22 to 37 percent federal range depending on total income.
It's the simplest and most conservative path, but it offers no rate break.
Section 1256: the 60/40 blended rate
If Section 1256 applies, 60 percent of your gain is taxed at long-term capital-gains rates and 40 percent at short-term, regardless of holding period. That blends to a lower effective rate than ordinary treatment for most people, which is why it's the most favorable option when it's available.
Whether event contracts qualify is contested, so this rate is a possibility, not a guarantee.
Gambling: ordinary rate, worse deductions
Gambling treatment also taxes winnings at your ordinary rate, but with a sting: for tax years beginning after the end of 2025, only 90 percent of losses are deductible against winnings, which can push your effective rate above your bracket on a breakeven year.
It's generally the least favorable of the three.
Don't forget state tax
Most states tax the gain as ordinary income on top of the federal bill, from zero in no-income-tax states to more than ten percent at the top. State tax generally doesn't recognize the Section 1256 split, so the state portion is the same regardless of federal treatment.
Your true all-in rate is federal plus state, which is why estimating both together matters.
Where ContractTax fits
ContractTax computes your result under all three treatments and adds your state, so instead of guessing at a rate you see your actual federal-plus-state tax in dollars for each path.
It is educational software, not tax advice. The right treatment is a decision for you and a CPA.