Iowa Sports Betting Laws
Iowa was one of the first states to legalize sports betting after the 2018 PASPA repeal. Here's exactly how the state's law works, who regulates it, and what changed in 2026 with the SF 605 withholding amendment.
Quick facts
SF 617; the legalization law
Senate File 617, signed by Governor Kim Reynolds on May 13, 2019, legalized both retail and online sports betting in Iowa. The bill moved through the state legislature in just three months; among the fastest legalization timelines in the United States. Both retail sportsbooks at Iowa casinos and licensed mobile apps launched on August 15, 2019, marking Iowa as the first state to launch retail and mobile betting on the same day.
Key provisions of SF 617:
- Sets the operator tax rate at 6.75% of gross gaming revenue; tied with Nevada for the lowest in the United States.
- Authorizes up to 19 retail sportsbook licenses, one per qualifying casino property.
- Allows up to 3 mobile "skins" per casino, capping the number of online operators at 19; currently 17 are live.
- Requires geolocation verification on every wager to ensure the bettor is physically inside Iowa.
- Allows full college sports betting including in-state teams and player props; a key advantage over states like Ohio, Maryland and New Jersey at various points.
SF 605; the 2026 withholding amendment
Senate File 605, signed by Governor Reynolds in 2025 and effective January 1, 2026, requires Iowa sportsbooks to withhold 3.8% Iowa state income tax on sports betting winnings whenever federal withholding is triggered. Federal withholding kicks in on winnings over $5,000 at odds of 300-to-1 or greater (the "long-shot rule").
What this means in practice:
- If you hit a +500 parlay for $6,000 in winnings, the operator now withholds $228 (3.8%) and remits it to the Iowa Department of Revenue automatically.
- Federal withholding (24%) applies on the same wins, so total withholding can hit 27.8% at the payout stage.
- Smaller wins below the federal threshold are not withheld at the payout stage; but you must still report all winnings on your Iowa tax return.
- You receive a W-2G from the operator documenting any withholding for tax-filing purposes.
Iowa Racing and Gaming Commission (IRGC)
The IRGC is the state body that licenses and regulates all Iowa sportsbooks. The commission enforces consumer protection rules, audits operator finances, investigates complaints, and publishes monthly handle and revenue reports. If you have a dispute with an operator that customer support cannot resolve, the IRGC accepts complaints at irgc.iowa.gov.
Where the tax revenue goes
Operator gaming tax revenue (6.75% GGR) and player withholding (3.8% on triggered wins) flow into the Iowa General Fund. The IRGC retains a portion for licensing and enforcement costs. Since legalization in August 2019, Iowa has generated more than $40 million in cumulative sports betting tax revenue.
College sports betting in Iowa
Iowa is one of the most bettor-friendly states for college sports. Unlike Ohio, Massachusetts and several others that restrict in-state college betting at various points, Iowa allows:
- Full game markets on Iowa Hawkeyes (Big Ten) and Iowa State Cyclones (Big 12); including spreads, totals and moneylines.
- Full player prop markets; passing yards, rushing yards, points scored, rebounds, etc.
- Full futures markets; division winners, conference championships, College Football Playoff and March Madness.
- Drake Bulldogs and Northern Iowa Panthers basketball and football markets.
The annual Cy-Hawk Trophy football game between Iowa and Iowa State is consistently among the highest-handle non-NFL games in the state.
Retail vs mobile
Iowa is overwhelmingly a mobile market. Retail sportsbooks operate at 19 casinos across the state but collectively handle only about $3.79M per month; roughly 1.5% of total handle. The other 98.5% goes through licensed mobile apps. Notable retail locations include Prairie Meadows (Altoona), Harrah's Council Bluffs, Q Casino (Dubuque), and Wild Rose properties in Clinton, Emmetsburg and Jefferson.
Key timeline
Frequently asked legal questions
Can I bet in Iowa if I don't live there?
Yes. Iowa requires you to be physically inside the state at the moment you place each bet, but residency is not required. Out-of-state visitors can sign up at any licensed Iowa operator using a valid US ID and SSN, and bet while inside Iowa.
What's the minimum age to bet in Iowa?
21 years old, both online and at retail casinos. Geolocation and ID verification are enforced at every operator.
Are offshore sportsbooks legal in Iowa?
No. Sites like Bovada, BetUS and MyBookie operate without an Iowa license, do not pay state taxes, and do not have to honor IRGC consumer-protection rules. Use only the 17 IRGC-licensed operators listed on this site.
How is sports betting taxed for Iowa residents?
All winnings are taxable income at both the federal level and Iowa state level (top rate 5.7% for tax year 2026). Operators withhold automatically only on large "long-shot" wins (over $5,000 at 300:1 odds or greater). For all other wins, you self-report on your Iowa Form 1040.
Can I bet on the Iowa Hawkeyes player props?
Yes. Iowa allows full college player prop markets including passing yards, rushing yards, receiving yards, touchdowns and rebounds. This makes Iowa one of the most bettor-friendly college sports markets in the United States.