Kalshi taxes in South Dakota
Good news if you trade Kalshi from South Dakota: there is no state income tax, so your gains are taxed only federally. This page covers what that means in practice and how to estimate the federal bill that does apply.
It is educational, not tax advice. The federal classification of event contracts is genuinely unsettled, so treat the numbers here as estimates and confirm with a professional before you file.
Do you owe South Dakota tax on your Kalshi gains?
South Dakota is one of the states with no individual income tax, so your Kalshi gains are taxed only at the federal level. There is no separate South Dakota tax on your trading profit, which is a real edge for active traders compared with high-tax states.
That does not make the income tax-free. You still owe federal tax on your net gains, and you are still expected to report them even though Kalshi does not issue a comprehensive 1099-B for event contracts.
What no state income tax means for you
Because South Dakota does not tax income, the only classification that affects your bottom line is the federal one: ordinary income, Section 1256, or gambling treatment. There is no state-level split to reconcile.
In a high-tax state, a big trading year can lose another ten percent or more to the state. In South Dakota, that piece is simply zero, so your after-tax take-home is higher on the same gains.
Estimating your federal bill
Your South Dakota state tax on a $5,000 profit is $0. The only number to estimate is the federal one, which depends on your marginal rate and which treatment you and your preparer use.
Use the state tax calculator below to confirm the zero state figure and estimate the federal portion in the same place.
The federal side still applies
Federally, your event-contract gains can be treated as ordinary income, under Section 1256's 60/40 split, or as gambling, and the three lead to very different bills. That question is unsettled and applies no matter which state you trade from. Our Kalshi taxes guide walks through all three, and the cents-vs-dollars guide covers the most common reconciliation mistake.