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Is Polymarket legal in Utah?
Status as of September 25, 2026 · every line has its source and date · not legal advice
As of September 25, 2026: polymarket.com does not let US users open new positions, including in Utah. Polymarket US, the CFTC-regulated app, is unclear (sources disagree) in Utah according to CBS Sports (September 24, 2026). 7 involving Kalshi are listed below with their sources. This is a dated summary of public sources, not legal advice.
Status at a glance
| Service | Utah |
|---|
| Polymarket US (CFTC-regulated app) | Unclear (sources disagree) |
| polymarket.com (international site) | No new trades for US users |
| Kalshi (for comparison) | Unclear; sports contracts unclear |
Unclear: a federal judge ruled on 2026-08-04 that Utah may enforce its gambling ban against Kalshi, the Tenth Circuit denied Kalshi an injunction pending appeal on 2026-09-08, and the Attorney General says it will enforce, but no source confirms whether Kalshi has blocked Utah users. Polymarket US's Utah status is also unclear.
What has happened in Utah
| Date | Company | Event and source |
|---|
| 2026-09-08 | Kalshi | A Tenth Circuit panel (Judges Hartz and Kelly) denied the injunction, finding Kalshi had not shown the required factors weigh in its favor.
Order, KalshiEX LLC v. Cox, No. 26-4100 (10th Cir.), Doc. 19 |
| 2026-08-11 | Kalshi | Kalshi asked the Tenth Circuit for an emergency injunction blocking Utah enforcement while the appeal is pending.
KalshiEX LLC v. Cox, No. 26-4100 (10th Cir.), docket entry 4 |
| 2026-08-05 | Kalshi | Kalshi appealed to the Tenth Circuit (No. 26-4100).
KalshiEX LLC v. Cox (D. Utah), docket entries 67 and 69 |
| 2026-08-04 | Kalshi | Judge Robert J. Shelby ruled that federal commodities law does not preempt Utah's enforcement of its anti-gambling laws against Kalshi, granted Utah summary judgment and denied Kalshi's preliminary injunction as moot.
Memorandum Decision and Order, KalshiEX LLC v. Cox (D. Utah), Doc. 65 |
| 2026-08-04 | Kalshi | Attorney General Derek Brown said his office will enforce Utah's gambling ban against prediction markets.
Utah defeats Kalshi in federal court: State can enforce its anti-gambling laws (Utah Attorney General) |
| 2026-03-25 | Kalshi | The governor signed House Bill 243, which adds proposition bets to Utah's criminal definition of gambling.
Utah Legislature, 2026 General Session H.B. 243 'Gambling Revisions' bill record |
| 2026-02-23 | Kalshi | Kalshi sued Governor Spencer Cox, Attorney General Derek Brown and three senior AG officials in federal court in Utah (No. 2:26-cv-00151), seeking a ruling that federal law preempts Utah's gambling laws.
KalshiEX LLC v. Cox, No. 2:26-cv-00151 (D. Utah), docket |
Good to know
- Under Utah law, intentionally providing or offering online gambling to anyone in Utah is a third-degree felony (Utah Code 76-9-1404), as the court's ruling notes. Memorandum Decision and Order, KalshiEX LLC v. Cox (D. Utah), Doc. 65
- The Attorney General's office says Utah's constitution bans gambling. Utah defeats Kalshi in federal court: State can enforce its anti-gambling laws (Utah Attorney General)
- HB 243 took effect May 6, 2026 and defines a proposition bet as a gambling bet on an individual action, statistic, occurrence or non-occurrence. Utah H.B. 243 (2026) enrolled copy
- In a February 2026 post quoted by the court, Governor Cox called prediction markets gambling and said they 'have no place in Utah'. Memorandum Decision and Order, KalshiEX LLC v. Cox (D. Utah), Doc. 65
- Kalshi told the Tenth Circuit that Utah's threatened enforcement would require it to block Utah users, unwind open positions, or both. Kalshi's emergency motion for injunction pending appeal, KalshiEX LLC v. Cox (10th Cir.), Doc. 4
- Kalshi says Utah officials refused by email on Aug. 5, 2026 to hold off enforcement while the appeal is pending. Kalshi's motion for injunction pending appeal, KalshiEX LLC v. Cox (D. Utah), Doc. 70
- Utah told the Tenth Circuit that, apart from a month-long agreed pause during district-court briefing, it has always been free to bring an enforcement action against Kalshi. Utah's opposition to injunction pending appeal, KalshiEX LLC v. Cox (10th Cir.), Doc. 15
- No Utah civil suit or criminal charge against Kalshi and no Utah action against Polymarket was found as of 2026-09-25; the AG newsroom lists no Kalshi item after the Aug. 4 release (latest news item dated Sept. 22). Utah Attorney General newsroom
- Twenty-three federally recognized tribes and gaming associations backed Utah's position as amici; no tribal lawsuit in Utah was found. Utah defeats Kalshi in federal court: State can enforce its anti-gambling laws (Utah Attorney General)
- Kalshi's opening brief in the Tenth Circuit appeal was due Sept. 21, 2026. KalshiEX LLC v. Cox, No. 26-4100 (10th Cir.), docket entry 14
State regulator: Utah Office of the Attorney General. The AG's office defended Utah's gambling ban in Kalshi's suit and says it will enforce it; no separate Utah gaming regulator was identified.
The federal picture
Polymarket US operates as a CFTC-designated contract market after Polymarket bought the CFTC-licensed exchange QCEX; Kalshi has been a designated contract market since 2020. Whether states may still apply their gambling laws to sports event contracts is being decided in the courts:
- 2026-09-25 Pending appellate decisions that could change several states' status: Sixth Circuit (Kalshi v. Ohio, No. 26-3196, and Kalshi v. Tennessee, No. 26-5235; argued 2026-07-30), Fourth Circuit (Kalshi v. Maryland, No. 25-1892; argued 2026-05-07), Second Circuit (Kalshi's New York and Connecticut appeals, Nos. 26-1835 and 26-2239, heard in tandem), Seventh Circuit (CFTC and Kalshi appeals from the Wisconsin injunction denial, No. 26-2636 et al.), Tenth Circuit (Kalshi v. Utah, No. 26-4100). No decision in any of these appeared in the court records checked for this file (CourtListener; indexes can lag PACER by a few days). CourtListener dockets cited in the Ohio, Tennessee, Maryland, New York, Connecticut, Wisconsin and Utah entries
- 2026-09-16 Ninth Circuit (Blue Lake Rancheria v. Kalshi, Inc., No. 25-7504; Murguia, McKeown, Paez; opinion by Judge McKeown) affirmed in part and reversed in part the denial of two California tribes' preliminary-injunction motion, holding the tribes likely to succeed in showing Kalshi's sports event contracts entered from tribal lands are class III gaming offered in violation of IGRA and their gaming procedures; the case was remanded for the remaining injunction factors, so no injunction had issued as of the last docket entry checked. Blue Lake Rancheria v. Kalshi, Inc., No. 25-7504 (9th Cir. Sept. 16, 2026) - published opinion (PDF)
- 2026-09-09 Kalshi petitioned for panel rehearing and rehearing en banc of the Ninth Circuit's 2026-08-28 Nevada decision (KalshiEX, LLC v. Assad, No. 25-7516); Montana's 2026-09-17 enforcement pause is tied to the outcome of that request. KalshiEX, LLC v. Assad, No. 25-7516 (9th Cir.) docket, entry 206 (CourtListener); Joint Stipulation of Dismissal, KalshiEX LLC v. Knudsen (D. Mont.), Doc. 35
- 2026-09-02 New Jersey petitioned the US Supreme Court for certiorari in Flaherty v. KalshiEX, LLC (No. 26-299, docketed 2026-09-08); Kalshi's response deadline was extended to 2026-11-09; an amicus brief was filed 2026-09-22 by the National Council of Legislators from Gaming States. Supreme Court docket No. 26-299
- 2026-08-28 Ninth Circuit (KalshiEX, LLC v. Assad, No. 25-7516; opinion by Judge R. Nelson, with Judges Bade and Lee; Lee concurring) affirmed in part the District of Nevada's order dissolving Kalshi's preliminary injunction, holding the CEA likely does not preempt Nevada gaming law as applied to Kalshi's sports event contracts (which it described as sports bets, not 'swaps'), and remanded for the district court to consider Nevada's challenges to Kalshi's election contracts. Nevada's regulator described the ruling as a 3-0 decision also covering Crypto.com and Robinhood. KalshiEX, LLC v. Assad, No. 25-7516 (9th Cir. Aug. 28, 2026) - published opinion (PDF)
How sure is this page? Confidence: low. Court and Attorney General records confirm the legal events, but sources conflict on whether Kalshi still serves Utah users after the Sept. 8 appeals-court denial. Researched September 25, 2026; court cases in several states can change the status at any time.
Related: all states · Polymarket US · polymarket.com and the United States · is Kalshi legal in Utah? (Kalshi View)
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Frequently asked questions
Is Polymarket legal in Utah?
As of September 25, 2026: polymarket.com does not let US users open new positions, including in Utah. Polymarket US, the CFTC-regulated app, is unclear (sources disagree) in Utah according to CBS Sports (September 24, 2026). 7 involving Kalshi are listed below with their sources. This is a dated summary of public sources, not legal advice.
Can I use polymarket.com from Utah?
Not for new trades. Polymarket's help center lists the United States as a blocked country and its developer documentation lists it as close-only (existing positions can be closed, new ones cannot be opened); US residents are pointed to Polymarket US.
Is Kalshi available in Utah?
Unclear; sports contracts unclear, according to the sources on this page as of September 25, 2026.
Polymarket View is independent and not affiliated with Polymarket or Kalshi. This page summarises public sources; it is not legal advice. Polymarket odds today