Iowa lawmakers have advanced a bill that would create state-level regulation and taxation for federally regulated “prediction markets.”

These are stock-market-style gambling platforms that allow users to wager on real-world events, including sports, elections, lotteries, legislative actions, and economic indicators.

The bill, originally introduced as Senate File 2085, has been renumbered as Senate File 2470. It passed the Iowa Senate 45-1 on March 31, 2026, and a House subcommittee recommended passage on April 27.

The bill was sent to the Iowa House Ways and Means Committee process.

Iowa Prediction Market Bill Would Require a $20 Million Permit

The latest version of the Iowa prediction market bill would prohibit a company from serving as a designated contract market in Iowa unless it obtains a permit through the Iowa Department of Revenue.

The bill’s initial permit fee has increased from the earlier $10 million version to $20 million. The annual renewal fee would remain $100,000. Iowa would also impose a 20% tax on adjusted revenues from event-driven contracts originating from traders in the state.

The bill applies to “event-driven contracts,” defined as fixed binary-payout financial derivatives tied to specific future events. The latest text limits those contracts to sporting activities, lotteries, elections, legislative actions, and economic indicators.

Prediction markets include Kalshi, Polymarket, DraftKings Predictions, and FanDuel Predicts. These platforms market themselves as trading or financial markets, not sportsbooks, even when the underlying product looks and feels like betting.

Iowa Bill Focuses On Taxes, Not Gambling Harm

The Iowa proposal is a tax-and-permit bill. It does not appear to create meaningful gambling-harm safeguards for prediction markets.

The bill does not include obvious consumer protection measures such as:

• Self-exclusion requirements
• Mandatory gambling helpline disclosures
• Deposit limits
• Loss limits
• Advertising restrictions
• Clear wagering requirements
• A 21+ age requirement
• A requirement that prediction markets follow Iowa’s existing sports betting consumer-protection framework

Prediction markets can be addictive for the same basic reason sports betting and day-trading-style gambling products can be addictive. Users are able to repeatedly stake money on fast-moving outcomes while being encouraged to view the activity as skill, knowledge, or “trading.”

The industry’s preferred language is part of the risk. Prediction markets often describe users as “traders,” not bettors. But when a person puts money on whether a team will win, whether an election result will happen, or whether a specific event will occur, the practical experience can be indistinguishable from gambling.

Iowa Adds a Backup Tax If Its First Plan Fails

The Senate-passed version of SF 2470 also adds a second division. If Iowa’s main “designated contract market tax” is later declared unconstitutional or unenforceable, the backup provision would impose a 20% event-driven contract excise tax on the amount paid to buy or sell an event-driven contract.

That backup tax would only take effect after the attorney general notifies the General Assembly and the Code editor that the first tax cannot be enforced, and after all appeals are exhausted.

The Iowa Legislative Services Agency estimated that the main permit-and-tax structure would generate $40 million for the state’s General Fund in fiscal year 2027, largely because the analysis assumes two platforms would enter Iowa and each pay the $20 million initial permit fee.

Iowa Takes a Different Approach Than Other States

Iowa is not trying to ban prediction markets outright. Instead, it is trying to tax and permit them.

That approach is different from the path emerging in some other states. The National Conference of State Legislatures said at least 10 states have addressed prediction market legislation in 2026, reflecting concerns over sports betting, elections, violence, unlawful activity, children’s access, and whether these platforms should be treated as financial markets or gambling products.

New York’s ORACLE Act would impose broader requirements and restrictions on prediction markets. The New York proposal has been amended and recommitted to the Assembly Consumer Affairs and Protection Committee.

Minnesota lawmakers have moved in a more restrictive direction. A Minnesota proposal passed the Senate 56-10 and would make certain prediction market activity a felony, though the bill faces time pressure in the House before adjournment.

Tennessee lawmakers have also advanced legislation aimed at prediction-market corruption. That bill would create a Class E felony for trying to influence the outcome of an event while holding a prediction-market contract that would financially benefit from that outcome.

Massachusetts Case Shows Why Iowa’s Bill Matters

The legal fight over prediction markets is also moving through the courts.

In Massachusetts, the state argues that Kalshi is offering unlicensed sports betting. Kalshi argues that only the federal Commodity Futures Trading Commission can regulate its sports-event contracts. In May, Massachusetts’ highest court appeared skeptical of Kalshi’s position during oral arguments, with justices questioning how the product differs from a sports bet.

That case is important because it goes to the heart of the Iowa bill.

The question is whether states can regulate and tax these products as gambling-adjacent activity, or whether federally regulated prediction-market operators can sidestep state gambling laws.

Bottom Line

Iowa’s prediction market bill has become more serious since its introduction.

The proposal is no longer just a $10 million permit idea. It has passed the Iowa Senate, moved into the House, doubled the initial permit fee to $20 million, and added a backup excise tax if the state’s main taxing structure fails in court.

However, the bill still appears to treat prediction markets primarily as a revenue opportunity, not a gambling-harm problem. That is the major weakness. Iowa could end up giving state-level legitimacy to highly addictive event-betting products without requiring the safeguards that already exist, however imperfectly, in regulated sports betting.

FAQ: Iowa Prediction Market Bill

What is the Iowa prediction market bill?

The Iowa prediction market bill is Senate File 2470, formerly Senate File 2085. It would require designated contract markets offering event-driven contracts in Iowa to obtain a permit from the Iowa Department of Revenue and pay state taxes.

Did the Iowa prediction market bill pass?

The bill has not become law yet. It passed the Iowa Senate 45-1 on March 31, 2026, and a House subcommittee recommended passage on April 27. It still needs to clear the House and be signed by the governor.

How much would prediction markets pay in Iowa?

Under the latest version, a prediction market operator would pay a $20 million initial permit fee, a $100,000 annual renewal fee, and a 20% tax on adjusted revenues from Iowa event-driven contracts.

Would Iowa ban Kalshi or Polymarket?

No. Iowa’s bill is not an outright ban. It would create a state permit and tax framework for qualifying federally regulated prediction markets.

Would Iowa require self-exclusion for prediction markets?

The latest bill does not appear to require self-exclusion, gambling helpline disclosures, deposit limits, or other major gambling-harm safeguards.

Why are prediction markets controversial?

Prediction markets are controversial because they allow users to stake money on real-world events while presenting the activity as trading rather than gambling. Sports-event contracts, in particular, closely resemble sports betting but may not be subject to the same state-level gambling rules.