Colorado Sports Betting Explained: Apps, Tax & Water Plan (2026)

✓ Last verified: 2026-08-13

Yes, sports betting is legal in Colorado, both online and in person, for anyone 21 or older who is physically located in the state. Coloradans have been able to bet legally since May 2020, and the market here is one of the most competitive in the country.

Two things make Colorado stand out. First, it licenses one of the largest pools of sportsbook operators of any state, which means bettors get real price competition instead of a two-app duopoly. Second, the tax on those books is earmarked for an unusual cause: the Colorado Water Plan, the state’s blueprint for stretching a scarce water supply across farms, cities, and rivers.

This guide covers how Colorado legalized betting, who you can bet with, what the tax pays for, the rules on college wagers, and where the state stands on prediction markets like Kalshi. For how Colorado compares with other states, see our state-by-state hub.

Quick facts

Item	Detail
Online betting since	May 1, 2020
Retail since	June 2020 (casinos were closed on May 1 under COVID orders)
Minimum age	21 (daily fantasy is 18)
Tax rate	10% of net sports betting proceeds
Live sportsbook apps	~12-13 as of mid-2026 (roster churns; check the state list)
College team betting	✅ Allowed, including in-state teams
College player props	❌ Banned since June 14, 2024
Prediction markets (Kalshi)	⚠️ Operating unregulated; no state cease-and-desist or lawsuit
Where the tax goes	Mostly the Colorado Water Plan (after admin and hold-harmless costs)
Regulator	Colorado Division of Gaming / Limited Gaming Control Commission

How Colorado got here

Colorado legalized sports betting through Proposition DD, a measure the legislature referred to voters via House Bill 19-1327. It appeared on the November 5, 2019 ballot and passed narrowly, roughly 51% to 49% (the election-night margin was even thinner before late mail ballots were counted).

The vote was legally required because of the Taxpayer’s Bill of Rights (TABOR), the Colorado constitutional provision that forces statewide voter approval for any new tax. Proposition DD created a new 10% tax on sportsbook proceeds, so it could not take effect without going to the ballot.

Online sportsbooks went live on schedule on May 1, 2020, less than six months after the vote. Retail books took longer. The casinos that host them were physically closed under COVID-19 public health orders that spring, so the first in-person sportsbook (Betfred, in Black Hawk) did not open until June 2020, after casinos reopened. Regulation sits with the Colorado Division of Gaming, part of the Department of Revenue, with policy and licensing set by the Limited Gaming Control Commission, the same body that oversees the state’s casino towns.

A crowded, competitive market

Colorado built its market to be wide open. State law allows up to 33 master licenses, one for each licensed casino, and each casino can put its own retail book plus one online “skin” into the market. In practice roughly 19 operators have held licenses, and Colorado is repeatedly described as having one of the largest pools of licensed online sportsbooks in the country.

That matters for bettors. More books competing for the same wager means sharper lines, more promotions, and more places to shop for the best price. It is a very different environment from a state with only one or two dominant apps. The catch is that “licensed” and “live” are not the same number: the licensed pool is large, but the number of books actually taking bets on a given day is smaller, and it shifts as operators come and go.

The tax, and where it goes

Colorado taxes sportsbooks at 10% of their net proceeds, meaning revenue after winning bets are paid out and after certain allowable deductions. The 10% rate set by Proposition DD has never changed. What has changed is what operators can deduct.

Originally, books could subtract 100% of the free bets they handed out as promotions. House Bill 22-1402 (2022) started capping that deduction, and House Bill 25-1311 (2025) accelerated the phase-out: the free-bet deduction dropped to 1% of monthly free bets in early 2026 and disappeared entirely on July 1, 2026. Colorado operators can now deduct no free bets at all. The headline rate stays 10%, but the base it applies to widened, so the effective tax the state actually collects moved from roughly 8.7% toward nearly the full 10% of gross gaming revenue.

Then there is the money’s destination. Tax revenue first covers the Division of Gaming’s administrative costs, then sends up to 6% to a “hold-harmless” fund that reimburses existing casino-tax recipients. The rest flows to the Water Plan Implementation Cash Fund, administered by the Colorado Water Conservation Board, which funds conservation, agricultural infrastructure, habitat, and drought planning. In November 2024, voters passed Proposition JJ by roughly 76% to 24%, letting the state keep sports-betting tax revenue above the old estimate of about $29 million (money that TABOR had previously required be refunded to operators). Nearly $33.8 million from fiscal year 2024-25 was allocated to the Water Conservation Board, and the first Proposition JJ distributions to water projects were due to begin in July 2026. Across the whole programme, roughly $140 million has gone to water projects out of about $154 million in sports betting taxes collected since 2020.

Who you can bet with

As of mid-2026, roughly a dozen online sportsbooks are live in Colorado. The consistently named books include bet365, BetMGM, DraftKings, Fanatics, FanDuel, Caesars, BetRivers, theScore Bet, Circa, Bally Bet, Hard Rock Bet, and BetMonarch. theScore Bet is the current name for what was ESPN BET, which rebranded in Colorado on December 1, 2025 (it is an active book, not a departure).

Treat any exact count with caution. Affiliate “best sportsbook” lists are notorious for keeping exited operators on the page long after they leave. Sporttrade, for example, announced in May 2026 that it was leaving Colorado (and all of its states) to pivot to prediction markets, yet some lists still showed it as live. WynnBET, SuperBook, Betsafe, SI Sportsbook, and others have also exited over the years. The authoritative live roster is the Colorado Division of Gaming’s licensed-operators list, which is the number to trust over any affiliate page.

Colorado has grown into one of the larger US markets on the strength of its early launch. Bettors wagered about $6.5 billion in calendar 2025, and the state set a fiscal-year record of roughly $6.3 billion in handle and about $37 million in tax in FY2024-25. January 2026 was a single-month record at $630 million in handle. By all-time cumulative handle, Colorado ranks around 7th nationally.

Retail betting in the mountain towns

Colorado’s in-person sportsbooks are not in Denver. By law they sit only inside the casinos of three historic mining towns: Black Hawk (home to most of the state’s retail books), Central City (Grand Z Casino), and Cripple Creek (Woody’s and Golden Nugget). There are only about eight to ten retail books statewide.

If you have never been, they are worth a visit, but they are a rounding error in the numbers. Online and mobile betting drives roughly 99.5% of Colorado’s handle. The retail counters exist mostly because the master-license structure ties every online skin to one of these casinos.

The college rule

You can bet on Colorado’s college teams. Game lines, point spreads, over/unders, team totals, and futures on the Colorado Buffaloes, Colorado State Rams, and Air Force Falcons are all allowed, with no special carve-out for in-state schools.

What you cannot bet is an individual college athlete’s performance. Colorado bans college player props (any wager tied to a single college player’s stat line) for every college athlete, in-state or out. This came from a regulatory change, not from a statute: Sports Betting Rule 1.3(3) of the Division of Gaming’s rules (1 CCR 207-2) bars proposition bets on collegiate events, and Rule 1.4(29) defines a prop as a wager naming an individual participant or, in a team sport, a specific position. Rule 1 was revised and renumbered on June 14, 2024 and amended again on January 14, 2026. Regulators have enforced it: BetMGM accepted a $50,000 fine (half suspended) on November 20, 2025 for 48 improper college player-prop bets, including 35 placed during the 2024 women’s NCAA basketball tournament, and DraftKings was fined $40,000 for a similar violation around July 2025. A 2026 bill, Senate Bill 26-131, originally proposed banning all prop bets, but lawmakers stripped that provision before the bill passed.

Daily fantasy and what is restricted

Daily fantasy sports is legal and separately regulated in Colorado under House Bill 16-1404 (2016). Note the age difference: DFS is open at 18, while sportsbook betting requires 21.

Colorado does restrict the format. Fantasy Contest Rules effective January 30, 2024 require contests to be peer-to-peer and prohibit “player-vs-house” (house-banked) games, the model behind pick’em products like early PrizePicks. Operators adjusted to a peer-to-peer structure to stay compliant. So DFS is available, but the house-banked pick’em style that regulators consider too close to sports betting is off the table.

Prediction markets

The live question in 2026 is prediction markets. Platforms like Kalshi let people trade contracts on sporting outcomes under federal (CFTC) oversight, effectively offering sports wagers without a state license, without the 10% state tax, and without Colorado’s responsible-gambling rules.

Colorado’s response has been notably restrained. The Division of Gaming has not issued a cease-and-desist and has not sued Kalshi, saying only that it is “monitoring the various cases making their way through the courts.” Colorado is not a party to any Kalshi lawsuit. Its one concrete step: Attorney General Phil Weiser joined a bipartisan coalition of 41 attorneys general in an April 2026 comment letter urging the CFTC to confirm that states, not the federal government, regulate sports-related contracts. The letter went out on Ohio’s letterhead, with Ohio, Nevada, New Jersey, New York, Tennessee, and Utah named as its leads.

Colorado also sits in a different courtroom than the marquee cases. It falls under the Tenth Circuit, and there is no Tenth-Circuit Kalshi ruling involving Colorado. The national picture is less settled than it is usually described. Only the Third Circuit has ruled on the preemption question, siding with Kalshi in a case out of New Jersey in April 2026, and only at the preliminary-injunction stage. States have fared better in the Sixth Circuit, which covers Ohio, but that court has so far only denied Kalshi emergency relief, and it heard argument in the consolidated Ohio and Tennessee appeals on July 30, 2026 without ruling since, so the appeals courts are not yet split. Like Arizona, another low-tax western market wrestling with the same question, Colorado is watching those appeals rather than litigating its own.

The honest 2026 outlook

Colorado’s market is maturing, and 2026 brought its first real rule tightening since legalization. Senate Bill 26-131, signed by Governor Jared Polis on June 1, 2026 and in force since August 12, 2026, bans credit-card deposits, caps bettors at six separate deposits in a gaming day, and bans promotional betting offers sent by text or push notification, with fines up to $25,000. Colorado is billed as the first state to pair a daily deposit limit with a statewide ban on push-notification betting marketing.

On the money side, the end of the free-bet deduction on July 1, 2026 now pushes more revenue to the Water Plan even if betting volume stays flat, which it has been trending toward. Handle growth has cooled while tax collections climb (fiscal-year taxes through May 2026 were up about 32% year over year on nearly flat wagering). Expect continued operator consolidation, a slow grind of prediction-market litigation elsewhere, and a tax bill that keeps funding Colorado rivers. For a sense of how different the tax math can be, compare Colorado’s 10% with New York’s 51%.

FAQ

Is FanDuel legal in Colorado? Yes. FanDuel is one of Colorado’s licensed online sportsbooks and has operated in the state since 2020. You must be 21 or older and physically in Colorado to bet.

What is the betting age in Colorado? You must be 21 to bet with a sportsbook, online or retail. Daily fantasy sports is the exception, with a minimum age of 18.

Can I bet on the Colorado Buffaloes? Yes. You can bet CU Buffaloes game lines, spreads, totals, and futures, along with Colorado State and Air Force. What you cannot bet is an individual college player’s prop, which Colorado banned in June 2024.

Where does Colorado sports betting tax money go? After the Division of Gaming’s costs and a hold-harmless fund, most of the 10% tax flows to the Colorado Water Plan through the Water Conservation Board, funding conservation and infrastructure projects. FY2024-25 sent over $33 million toward water.

Is Kalshi legal in Colorado? Kalshi operates in Colorado as a federally regulated prediction market, outside the state sports-betting system. Colorado has not issued a cease-and-desist or filed suit; the Division of Gaming says it is monitoring the court cases. The legal status of these markets is unsettled nationwide.

How many sportsbooks can I bet with in Colorado? Around a dozen online books are live as of mid-2026, and Colorado licenses one of the largest operator pools in the country. Because operators enter and exit often, check the Division of Gaming’s official list for the current roster.