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Being fought in court

Is Polymarket legal in Ohio?

QCX LLC, which operates Polymarket US, sued Ohio officials in federal court in Columbus on Oct. 16, 2026; no ruling yet.

Checked Oct 27, 2026 against court dockets and official pages. Not legal advice.

Polymarket in Ohio

Status
Being fought in court
Latest step in Ohio
Oct 16, 2026
State income tax
2.75% flat above $26,050
Gambling losses
No

Legal status

Where does Polymarket stand in Ohio?

As of October 27, 2026, Kalshi and other platforms have not been stopped by a court order in Ohio, and no ruling protects them either. On September 25, 2026 the Sixth Circuit appeals court upheld a federal judge's refusal to block Ohio from enforcing its gambling laws against Kalshi's sports contracts. Kalshi has asked the full Sixth Circuit to rehear the case, and Polymarket US and Underdog have filed their own suits against Ohio in October.

What happens next: The Sixth Circuit has not yet ruled on Kalshi's Oct. 9, 2026 request for a rehearing by the full court; the Ohio trial court case is paused until the appeal mandate issues.

Polymarket · 1 step

What has happened with Polymarket in Ohio?

Oldest first. Each links to the filing or page it comes from.
  1. Oct 16, 2026

    Court · U.S. District Court, S.D. Ohio · QCX LLC v. Wilson (No. 2:26-cv-01502)

    QCX LLC, which runs Polymarket US, sued Ohio officials in federal court in Columbus. On the same day Underdog filed a motion for a preliminary injunction in its Cleveland case.

    CourtListener docket, QCX LLC v. Wilson

Same state

What else has happened in Ohio?

Steps that name other platforms or the state's rules generally.
  1. Oct 7, 2025

    Court · U.S. District Court, S.D. Ohio · KalshiEX LLC v. Schuler (No. 2:25-cv-01165)

    Kalshi sued the Ohio Casino Control Commission and its officials in federal court in Columbus, asking the judge to stop Ohio from enforcing its gambling laws against Kalshi's sports contracts.

    CourtListener docket, KalshiEX v. Schuler
  2. Mar 9, 2026

    Court · U.S. District Court, S.D. Ohio · KalshiEX LLC v. Schuler (No. 2:25-cv-01165)

    A federal judge in Columbus denied Kalshi's request for a preliminary injunction. This was not a final ruling, but Ohio was left free to enforce its laws.

    CourtListener docket, entry of Mar. 9, 2026
  3. Sep 8, 2026

    Court · U.S. District Court, N.D. Ohio · Underdog Exchange DCM, Inc. v. Wilson (No. 1:26-cv-02169)

    Underdog's exchange and a related company sued Ohio officials in federal court in Cleveland, seeking to block enforcement against its sports event contracts.

    CourtListener docket, Underdog Exchange DCM v. Wilson
  4. Sep 25, 2026

    Court · U.S. Court of Appeals for the Sixth Circuit · KalshiEX LLC v. Schuler (decided with KalshiEX LLC v. Orgel) (Nos. 26-3196 and 26-5235)

    The Sixth Circuit appeals court affirmed the denial of Kalshi's injunction in Ohio. It held Kalshi had not shown its sports contracts are 'swaps' under federal law and, even if they were, federal law does not override Ohio's gambling laws. This ruling was about a preliminary injunction, not a final judgment.

    Sixth Circuit opinion, Sept. 25, 2026
  5. Oct 9, 2026

    Court · U.S. Court of Appeals for the Sixth Circuit · KalshiEX LLC v. Schuler (No. 26-3196)

    Kalshi petitioned for the full Sixth Circuit to rehear the case. The CFTC filed a friend-of-the-court brief on Oct. 16, 2026.

    CourtListener docket, Sixth Circuit No. 26-3196

Your taxes

What does this mean for your Ohio taxes?

Ohio taxes gambling winnings and prediction market profits as income (2.75% flat above $26,050). It doesn't let you deduct gambling losses, so gambling winnings are taxed in full on your state return.

For 2026, Ohio taxes nonbusiness income at 0% on the first $26,050 and 2.75% above that. For 2025, the rate was 2.75% from $26,050 to $100,000 and 3.125% above $100,000.

Ohio doesn't allow a deduction for gambling losses. Ohio starts from federal AGI, and the 2025 Ohio Schedule of Adjustments has no line for gambling losses. Ohio taxes the full winnings.

Federal tax applies wherever you live. The IRS hasn’t said how event contracts are taxed, so traders use one of four methods: capital gains, Section 1256, ordinary income or gambling. Polymarket taxes, explained. All Ohio tax rules.

A court fight doesn’t change what you already owe. Positions you closed still count in the year they closed, so download your records now, whatever happens with access in your state.

Ask your AI

Ask your AI about Polymarket in Ohio

Answer a few questions and we write the prompt for ChatGPT, Claude, Perplexity or any AI. It carries the four tax methods, your state’s rule and links to the pages behind them, checked November 3, 2026. Or run your actual trades for exact figures, free.

Tax year
Up or down this year?
Open positions on December 31?
Add rough numbers (optional)

The AI can then work the methods out for your year. Round figures are enough.

Your prompt

2,239 characters

I trade prediction markets on Polymarket US. I'm working on my US federal taxes for 2026. I live in Ohio.

From WagerMints, checked November 3, 2026:
- Polymarket US is a separate, CFTC-regulated exchange from polymarket.com.
- We haven't been able to confirm what Polymarket US reports to the IRS, so check the account's documents.
- The IRS has published no guidance on how event contracts are taxed.

Four ways traders report this:
1. Capital gains: Form 8949 and Schedule D, short- or long-term by holding period. Net losses offset up to $3,000 of other income a year, and the rest carries forward.
2. Section 1256: Form 6781, 60% long-term and 40% short-term however long I held. Positions open on December 31 count as sold at that day's value. Disputed: Camuso and Mukherjee (Tax Notes Federal, June 2026) conclude it isn't available, White & Case argues for it, and the CFTC's October 2026 proposal to call event contracts swaps cuts against it, because Section 1256 excludes swaps.
3. Ordinary income: net result on Schedule 1, line 8z.
4. Gambling: winnings on Schedule 1, line 8b. Losses only on Schedule A if I itemize, only up to winnings, and only 90% of them from 2026.

Ohio: Ohio taxes gambling winnings and prediction market profits as income (2.75% flat above $26,050). It doesn't let you deduct gambling losses, so gambling winnings are taxed in full on your state return.
Legal status there: As of October 27, 2026, Kalshi and other platforms have not been stopped by a court order in Ohio, and no ruling protects them either.

Read these pages:
- https://wagermints.com/polymarket-taxes
- https://wagermints.com/blog/how-to-report-kalshi-polymarket-taxes
- https://wagermints.com/state-taxes/ohio
- https://wagermints.com/legal/polymarket/ohio

My question: How would my year come out under each of the four methods?

How to answer:
- Say which links you opened, and never describe one you didn't open. If one fails, use the facts above and say so.
- Mark each point [linked source], [general tax rule] or [unsettled].
- Put the methods side by side in one table for my year, and state any number you assume.
- Don't pick a method for me. End with questions for a CPA or enrolled agent, then anything you need from me.

WagerMints doesn’t see or store what you type here. The prompt goes to the AI you pick, under that company’s terms. Never add your Social Security number, API keys or wallet keys. AI answers can be wrong, so check them against the linked sources and a preparer.

Questions

Questions about Polymarket in Ohio

Is Polymarket legal in Ohio?

QCX LLC, which operates Polymarket US, sued Ohio officials in federal court in Columbus on Oct. 16, 2026; no ruling yet. This reports public records as of Oct 27, 2026, and it isn't legal advice.

Can I still trade on Polymarket in Ohio?

Check the app, because platforms change what they offer by state and by contract type. This page tracks court and regulator actions, not each platform's product list.

Do I owe tax on Polymarket profit in Ohio?

Yes, federal tax applies wherever you live. Ohio taxes gambling winnings and prediction market profits as income (2.75% flat above $26,050). It doesn't let you deduct gambling losses, so gambling winnings are taxed in full on your state return.

Does the Ohio legal fight change how my trades are taxed?

No. These cases decide whether Ohio can license or stop the platforms. They don't decide how your trades are taxed. IRS Publication 525 says income from illegal activities must be reported too, so a state's win wouldn't remove tax on profit you already made.

More

Other pages on this

Other platforms in Ohio: Kalshi, Underdog.

Polymarket in other states: Rhode Island, Wisconsin, Connecticut, Kentucky, Maryland, Massachusetts, Michigan, Minnesota, and the full list.