Are Prediction Markets Legal in Colorado?
Status as of October 3, 2026: Available. What the courts and the state have done, with dated sources.
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Quick Verdict: Available
Kalshi, Polymarket US, ProphetX, OG and Novig: Available. No court ruling or state enforcement action on prediction markets in Colorado was found in the legal timeline (absence is not proof).
Nationally: Federal appeals courts are split on sports event contracts, all at the preliminary-injunction stage: the Third Circuit sided with Kalshi (Apr 6, 2026), the Ninth (Aug 28, 2026) and Sixth (Sep 25, 2026) sided with the states, and three Supreme Court petitions (Nos. 26-299, 26-338, 26-344) are pending; none has been granted.
- Status (as of October 3, 2026): Kalshi, Polymarket US, ProphetX, OG and Novig: Available.
- Why: No court ruling or state enforcement action on prediction markets in Colorado was found in the legal timeline (absence is not proof).
- Welcome offers that apply to Colorado residents (partner terms of Oct 1, 2026): Kalshi, Polymarket US, ProphetX, OG, Novig, Rebet.
- Age: Kalshi, Polymarket US, OG and Rebet set 18 as the minimum (ProphetX: 18 or the local age of majority if higher); Novig sets 21. We recommend 21+.
- Status describes whether each platform accepts Colorado residents, not whether trading is legal. We do not give legal advice.
Best offer right now
Kalshi
Score 92/100
Trade $25 and Get $25!
Trade $25 in event contracts and get $25 in credit. Use code RANKPREDICTS at signup.
Code: RANKPREDICTS
Claim $25 credit (opens in a new tab)21+ · Terms apply · Verified Sep 2
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
Full offer details →Colorado has one of the most mature mobile sports-betting markets in the western US — voters approved sports betting via Proposition DD (opens in a new tab) in November 2019, the Division of Gaming launched online wagering in May 2020, and the state now hosts more than two dozen licensed sportsbook operators including DraftKings, FanDuel, BetMGM, Caesars, ESPN BET and Fanatics Sportsbook. Annual handle has crossed $6B. Despite that scale, Colorado has not joined the multi-state coalition led by Massachusetts AG Andrea Joy Campbell that sued Kalshi in late 2025. Colorado AG Phil Weiser and the Division of Gaming have remained publicly silent on CFTC-regulated prediction markets through April 2026.
For Colorado residents, the practical effect is that nearly every major CFTC-regulated prediction market platform is available statewide. The only exceptions are DraftKings Predictions, FanDuel Predicts and Fanatics Markets — all three voluntarily geofence Colorado because their parent companies hold CO Division of Gaming sportsbook licenses they need to protect.
What Colorado Residents Can Trade Right Now
- Geofenced by DraftKings Predictions, FanDuel Predicts, Fanatics Markets.
Colorado-specific market depth is strongest on Denver Broncos (NFL), Denver Nuggets (NBA), Colorado Avalanche (NHL), Colorado Rockies (MLB) and CU Buffaloes / CSU Rams (NCAA) contracts. Political market depth is strong around the Colorado gubernatorial race and federal Senate races.
Best Prediction Market Platforms for CO Residents
CFTC Designated Contract Market.
Routes orders through Kalshi.
Polymarket US — Strong political and macro depth. Funds in US dollars.
OG.com — Available with full sports catalog. Lower per-contract fees than Kalshi.
Novig — Peer-to-peer no-vig sports markets. Available in CO.
Chalkboard — Sports prediction markets. Available in CO.
Sleeper — Fantasy-adjacent prediction props. Available in CO.
Rebet — Available in CO.
DraftKings Predictions / FanDuel Predicts / Fanatics Markets — Not available in CO (voluntary geofencing tied to state sportsbook licenses).
Eligibility Checklist for CO Residents
- 18+ on CFTC-regulated platforms (CO state sportsbooks: 21+).
- Government ID + SSN for KYC verification.
- US bank account or debit card.
Tax Treatment for CO Residents
- Federal: taxable, but the IRS↗ (opens in a new tab) hasn't issued guidance on event contracts; tax professionals argue for gambling income, capital gains or Section 1256 (60/40).
- Colorado state: Flat 4.4% state income tax applies to taxable gains.
Local Sports Angle: Broncos, Nuggets, Avalanche, Rockies, Buffaloes
Colorado fans can currently trade event contracts on the Denver Broncos, Nuggets, Avalanche, Rockies and CU Buffaloes on Kalshi, Robinhood, Polymarket and OG.com. This includes Super Bowl futures, NBA Finals odds, Stanley Cup futures, World Series odds, and college football championship markets.
What could change the status
Dates we are watching: Nevada's responses to the Robinhood and Crypto.com Supreme Court petitions are now due November 13 and 16, 2026 (both extended in October), and Kalshi's response to New Jersey's petition is due November 9, 2026 (deadlines can be extended); the earliest the Supreme Court could act on the petitions is a conference in December 2026 or January 2027 (our estimate, not a scheduled date). We re-check this page when any of these happen and log the change above.
Sources
- The Hill: Lawmakers ramp up fight against sports betting on prediction markets (opens in a new tab)
- Holland & Knight: Federal Appeals Court: CFTC Jurisdiction Over Sports Event Contracts (opens in a new tab)
Status in Colorado as of October 3, 2026
| Platform | Status | Why (source) | Welcome offer in Colorado |
|---|---|---|---|
| Kalshi | Available | Kalshi accepts Colorado residents; no court ruling or state enforcement action on prediction markets in Colorado was found in our legal timeline. (source (opens in a new tab)) | Valid: Trade $25 and Get $25! |
| Polymarket US | Available | Polymarket US accepts Colorado residents; no court ruling or state enforcement action on prediction markets in Colorado was found in our legal timeline. (source (opens in a new tab)) | Valid: Deposit $10 get a $25 Trading Bonus! |
| ProphetX | Available | ProphetX accepts Colorado residents; no court ruling or state enforcement action on prediction markets in Colorado was found in our legal timeline. (source (opens in a new tab)) | Valid: Trade $50, Earn $75! |
| OG (by Crypto.com) | Available | OG accepts Colorado residents; no court ruling or state enforcement action on prediction markets in Colorado was found in our legal timeline. (source (opens in a new tab)) | Valid: Trade $25 Get $50 in Rewards! (New users only) |
| Novig | Available | Novig accepts Colorado residents; no court ruling or state enforcement action on prediction markets in Colorado was found in our legal timeline. (source (opens in a new tab)) | Valid: Deposit $10 Get $50 in Trade Credits! |
| Rebet | Available | Rebet is a sweepstakes app, not a CFTC-regulated exchange; its sweepstakes rules include Colorado. (source (opens in a new tab)) | Valid: Get a 100% purchase match up to $100! |
What changed (newest first)
- Sep 25, 2026 (federal) — Sixth Circuit rules against Kalshi in Ohio and Tennessee appeals. Source: U.S. Court of Appeals for the Sixth Circuit (opinion, Nos. 26-3196/26-5235) (opens in a new tab)
- Sep 11, 2026 (federal) — Crypto.com asks Supreme Court to review Ninth Circuit ruling (No. 26-344). Source: Supreme Court of the United States, docket No. 26-344 (opens in a new tab)
- Sep 10, 2026 (federal) — Kalshi seeks Ninth Circuit rehearing; Robinhood petitions Supreme Court. Source: Sports Betting Dime (opens in a new tab)
- Sep 2, 2026 (federal) — New Jersey asks U.S. Supreme Court to review Kalshi preemption ruling. Source: New Jersey Office of the Attorney General (opens in a new tab)
- Aug 28, 2026 (federal) — Ninth Circuit rules for Nevada regulators in Kalshi case. Source: U.S. Court of Appeals for the Ninth Circuit (opinion, No. 25-7516) (opens in a new tab)
- Apr 6, 2026 (federal) — Third Circuit sides with Kalshi against New Jersey regulators. Source: U.S. Court of Appeals for the Third Circuit (opinion, No. 25-1922) (opens in a new tab)
_No Colorado-specific entry is in the legal timeline; the list shows the federal rulings and Supreme Court petitions that shape the national picture._
Prediction markets in other states
- Alaska
- California
- Colorado
- Connecticut
- Florida
- Hawaii
- Illinois
- Kansas
- Maryland
- Massachusetts
- Minnesota
- Nebraska
- New Hampshire
- New Jersey
- New York
- North Dakota
- Oregon
- Pennsylvania
- Rhode Island
- Texas
- Utah
- Vermont
- Virginia
- Washington
- Wyoming
- Alabama
- Arizona
- Arkansas
- Delaware
- Georgia
- Idaho
- Indiana
- Iowa
- Kentucky
- Louisiana
- Maine
- Michigan
- Mississippi
- Missouri
- Montana
- Nevada
- New Mexico
- North Carolina
- Ohio
- Oklahoma
- Puerto Rico
- South Carolina
- South Dakota
- Tennessee
- Washington DC
- West Virginia
- Wisconsin
§ References & Sources
- Commodity Futures Trading Commission (CFTC) (opens in a new tab)— U.S. federal regulator
- CFTC Designated Contract Markets list (opens in a new tab)— CFTC
- 26 U.S. Code § 1256 — Section 1256 contracts marked to market (opens in a new tab)— Cornell Law / U.S. Code
- IRS Form 6781 — Gains and Losses From Section 1256 Contracts (opens in a new tab)— Internal Revenue Service
- National Council on Problem Gambling — 1-800-GAMBLER (opens in a new tab)— NCPG
Frequently asked questions
Are prediction markets legal in Colorado?
We don't give legal verdicts, but here is the status as of October 3, 2026: Kalshi, Polymarket US, ProphetX, OG and Novig: Available. No court ruling or state enforcement action on prediction markets in Colorado was found in the legal timeline (absence is not proof). Nationally, federal appeals courts are split on sports event contracts, all at the preliminary-injunction stage, and three Supreme Court petitions are pending; none has been granted.
Can I use Kalshi in Colorado?
Status as of October 3, 2026: Available. Kalshi accepts Colorado residents; no court ruling or state enforcement action on prediction markets in Colorado was found in our legal timeline. Kalshi's welcome offer (Trade $25 and Get $25!) applies to Colorado residents. Kalshi's minimum age is 18; we recommend 21+.
Has Colorado taken action against prediction markets?
Our legal timeline has no court ruling or state enforcement action on prediction markets in Colorado (that is not proof none exists). No federal appeals court covering Colorado has ruled on sports event contracts.
What could change the status in Colorado?
Dates we are watching: Nevada's responses to the Robinhood and Crypto.com Supreme Court petitions are now due November 13 and 16, 2026 (both extended in October), and Kalshi's response to New Jersey's petition is due November 9, 2026 (deadlines can be extended); the earliest the Supreme Court could act on the petitions is a conference in December 2026 or January 2027 (our estimate, not a scheduled date). We re-check this page when any of these happen and log the change above.
21+ · T&Cs apply · Terms
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.