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Kalshi South Dakota: A State With No App to Protect

Kalshi South Dakota is a different case from most of this series, because South Dakota does not actually have a licensed mobile sportsbook of its own to lose revenue to. The state's own attempt to build one, a 2026 constitutional amendment called SJR 504, died in a House committee in March — which means South Dakota's attorney general is fighting Kalshi on principle, not on behalf of an app that exists.

Legal status in South Dakota

South Dakota runs one of the most restrictive licensed sports betting markets in the country, and it runs entirely offline. Voters approved the Deadwood Sports Betting Legalization Amendment in November 2020 by roughly 239,620 to 170,191, but that amendment limited wagering to retail sportsbook counters at commercial casinos physically located in Deadwood, plus tribal casinos operating under state-tribal gaming compacts. There is no statewide mobile app tied to any of it: nine retail sportsbooks currently take wagers, all in person, all age 21-plus, regulated by the South Dakota Commission on Gaming. South Dakota also has one of the country's more explicit anti-online-gambling statutes on the books, separate from the sports betting question entirely. Lawmakers tried to change that in 2026. Sens. Casey Crabtree and Greg Jamison introduced Senate Joint Resolution 504, a constitutional amendment that would have let the legislature authorize electronic sports betting statewide — with a catch requiring servers to stay physically in Deadwood — and sent 90% of the resulting tax revenue to property tax relief. It passed the Senate 23-10 on February 11, 2026. It did not survive the House. The House State Affairs Committee voted 7-6 to reject it, then voted 11-2 to defer it to the 41st legislative day — a procedural move in a 40-day session that kills a bill without a recorded floor vote — after committee chair Rep. Scott Odenbach argued mobile access could hurt Deadwood tourism and increase gambling-addiction risk. That means no mobile sports betting question is going before South Dakota voters in November 2026, and the state's licensed market stays exactly as narrow as it was before the session started. Into that gap, Kalshi operates on its federal CFTC designation, with no South Dakota-specific license and nothing built for the state's retail-only framework. The South Dakota Attorney General's office has not filed its own suit or cease-and-desist against Kalshi, but it has joined two multistate actions: an April 2026 amicus brief backing Massachusetts's case against Kalshi at that state's Supreme Judicial Court, signed by 38 states, and a July 2026 letter to the CFTC — signed by 44 states, all but Texas, Florida, Georgia, Missouri, and New Hampshire — arguing the agency has no statutory authority over sports event contracts. Separately, the Deadwood Gaming Association, the private trade group representing Deadwood's licensed casinos, has publicly criticized prediction markets through executive director George Milos, who argues South Dakota gets no tax benefit from Kalshi's trades and that the state should keep regulating gambling through its own Commission on Gaming rather than federal preemption.

State gambling authority: South Dakota Commission on Gaming (licenses Deadwood's nine retail sportsbooks and video lottery; has not asserted jurisdiction over Kalshi); Attorney General's office (joined two multistate actions against Kalshi's legal theory, has filed no South Dakota-specific suit)

Kalshi South Dakota is a strange case to build because South Dakota doesn’t have a mobile sportsbook of its own to compare it against. The state’s one attempt to build one in 2026 passed the Senate and then died quietly in a House committee, which leaves the state’s attorney general arguing against Kalshi’s legal theory without an app of South Dakota’s own on the table to protect.

Nine Sportsbooks, Zero Apps

South Dakota voters approved the Deadwood Sports Betting Legalization Amendment in November 2020, roughly 239,620 to 170,191. What they approved was narrow by design: retail sportsbook counters inside Deadwood’s commercial casinos, plus tribal casinos operating under state-tribal compacts. No mobile app, no statewide platform. Nine retail sportsbooks currently take wagers, all in person, all age 21-plus, licensed and regulated by the South Dakota Commission on Gaming. Separately, South Dakota has one of the more explicit statutes anywhere criminalizing online gambling more broadly — a law that predates Kalshi and wasn’t written with an event-contract exchange in mind.

South Dakota’s licensed market, by the numbers:

Legal since November 2020 (Deadwood Sports Betting Legalization Amendment)
Nine retail sportsbooks, all in Deadwood casinos or tribal casinos
No statewide mobile or online sportsbook exists
Regulated by the South Dakota Commission on Gaming
Minimum betting age: 21

The Bill That Almost Changed That

Sens. Casey Crabtree and Greg Jamison introduced Senate Joint Resolution 504 in January 2026, a constitutional amendment that would have let the legislature authorize statewide electronic sports betting — with servers required to stay physically in Deadwood — and routed 90% of the tax revenue to property tax relief. It cleared the Senate 23-10 on February 11, 2026. Then the House State Affairs Committee voted 7-6 to reject it and, a few minutes later, 11-2 to defer it to the 41st legislative day — a procedural kill in a session that only runs 40 days. Committee chair Rep. Scott Odenbach said he supported Deadwood’s existing casinos but worried anytime-anywhere mobile access could pull tourism away from the town and raise gambling-addiction risk.

No mobile betting question reaches South Dakota voters in November 2026. SJR 504 needed to clear both chambers before it could go to the ballot. It didn’t. The state’s licensed sports betting market stays exactly as narrow — nine retail counters, no app — as it was before the 2026 session opened.

Is Kalshi Legal in South Dakota? A Coalition Position, Not a Lawsuit

South Dakota has not sued Kalshi and has not sent it a cease-and-desist. What it has done is sign onto two multistate actions: a 38-state amicus brief in April 2026 backing Massachusetts’s case against Kalshi at that state’s Supreme Judicial Court, and a 44-state letter to the CFTC in July 2026 — joined by every state except Texas, Florida, Georgia, Missouri, and New Hampshire — arguing the agency has no statutory authority over sports event contracts. Both are South Dakota taking a side in other states’ fights, not a South Dakota court ruling on South Dakota law.

Deadwood’s Casinos Have Their Own Objection

Separate from the Attorney General’s office, the Deadwood Gaming Association — the private trade group representing Deadwood’s licensed casino operators, not a state agency — has publicly pushed back on prediction markets. Executive director George Milos called them “a complete overreach,” arguing South Dakota collects no tax revenue from Kalshi’s trades the way it does from Deadwood’s own sportsbooks, and that the state should keep regulating gambling through its own Commission on Gaming and Legislature. The Association has no enforcement authority of its own; it’s a lobbying voice, not a regulator.

Is Kalshi Legit in South Dakota?

As a company, the answer doesn’t change by state: CFTC designation since 2020, KYC-verified accounts, dollar settlement. South Dakota’s open question is about jurisdiction and a killed ballot measure, not about whether Kalshi pays out on a contract that resolves in a trader’s favor.

How Safe Is Kalshi for South Dakota Traders Right Now?

Safe in the CFTC-oversight sense — KYC, dollar settlement, federal designation — not in the sense of a South Dakota Commission on Gaming seal of approval, since its licensing authority stops at Deadwood’s nine retail sportsbooks and never reached Kalshi to begin with.

A dead ballot measure and a coalition letter don’t change what a trade is: money that can be lost in full, not a way to make it. 21+ only; the National Problem Gambling Helpline, 1-800-522-4700, is free and confidential.

Kalshi South Dakota — Frequently Asked Questions

Is Kalshi legal in South Dakota?

Nothing in South Dakota law currently blocks it, and no South Dakota court has ruled on the question. The state's gambling statutes were built around Deadwood's retail casinos and a separate online-gambling ban that predates Kalshi entirely, not a CFTC-regulated exchange. South Dakota's Attorney General has joined two multistate actions arguing states should keep authority over sports event contracts generally, but has not sued Kalshi directly or won an order against it here.

Does South Dakota have its own online sports betting app?

No. South Dakota's licensed sports betting is retail-only — nine sportsbooks inside Deadwood commercial casinos and tribal casinos, all requiring in-person wagers. A 2026 bill, SJR 504, would have asked voters to authorize a statewide mobile app, but it died in the House State Affairs Committee in March 2026 after passing the Senate. There's no near-term legislative path to revisit it before the next session.

Why did South Dakota join lawsuits against Kalshi if it never sued the company itself?

South Dakota's Attorney General's office signed a 38-state amicus brief in April 2026 backing Massachusetts's case against Kalshi, and a separate 44-state letter to the CFTC in July 2026 arguing the agency lacks authority over sports event contracts. Both are coalition actions, not an independent South Dakota lawsuit or cease-and-desist — the state has taken a position without filing its own case.

Is Kalshi legit in South Dakota?

As a company, yes — CFTC designation since 2020, KYC-verified accounts, dollar settlement, the same baseline as every state on this site. South Dakota's unresolved question is jurisdictional, not whether Kalshi honors a trade that resolves in a customer's favor.

Is Kalshi safe to use in South Dakota right now?

You can open an account and trade today; nothing in South Dakota currently blocks it. "Safe" here means CFTC oversight and identity verification, not an endorsement from the South Dakota Commission on Gaming, whose licensing authority covers only Deadwood's retail sportsbooks and never extended to Kalshi in the first place.

Does Deadwood's casino industry actually oppose Kalshi?

Its trade group does. George Milos, executive director of the Deadwood Gaming Association, has called prediction markets "a complete overreach" and argued South Dakota collects no tax revenue from Kalshi's trades the way it does from Deadwood's own licensed sportsbooks. That's an industry lobbying position, not a regulatory action — the Association has no enforcement power over Kalshi.

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