The CFTC Wants to Call Event Contracts Swaps. Here's What That Does to Your Taxes

Nothing on your 2026 return changes today. On October 9 the CFTC proposed writing “event contracts, including those based on sports-, politics-, cultural-, and weather-related events” into the legal definition of a swap. That is a commodities-law move, and the CFTC says so in the proposal itself. But it does shift the tax argument, and it shifts it against the treatment most tax tools lead with.

What the CFTC actually did

Two documents came out together on October 9, 2026, and were published in the Federal Register on October 19.

• A proposed rule (RIN 3038-AF82) that adds one line to the CFTC’s definition of “swap”: “Event contracts, including those based on sports-, politics-, cultural, and weather-related events.” It is open for public comment until November 18, 2026.
• An interim final rule that says bets taken by a state- or tribal-licensed sportsbook or casino are not swaps, as long as they are not traded on an exchange. That one took effect on publication.

Read together, the line the CFTC is drawing is about where a bet happens. A wager with a licensed house is gambling and belongs to the states. The same wager on a CFTC-registered exchange is a swap and belongs to the CFTC. Steve Ruddock put it neatly in Straight to the Point: the CFTC is saying “a hot dog is a sandwich if it’s sold on a CFTC-registered exchange and it’s not when it’s sold by a licensed sportsbook or casino.”

The timing is not an accident. Several states have asked the Supreme Court to take up their fights with Kalshi, and Kalshi cited both rules in its petition for a rehearing at the Sixth Circuit the same day. This is a jurisdiction fight. Your tax bill is collateral.

The one sentence about taxes

The proposal is 40-odd pages of commodities law, and it addresses tax exactly once:

“The classifications proposed here are for purposes of the Commodity Exchange Act. Federal tax treatment and associated information reporting, withholding, registration, and payment obligations are determined under the Internal Revenue Code and applicable Treasury regulations and IRS guidance.”

That is the CFTC telling you, in writing, that it is not deciding your taxes. The IRS has still issued no guidance on event contracts. So the honest position for 2026 is the same as it was in September: there are four defensible ways to report this income, and nobody with authority has picked one.

What the proposal does do is hand ammunition to one side of an argument that tax professionals were already having.

Why “swap” is bad news for the 60/40 argument

Section 1256 is the treatment that taxes 60% of a gain at long-term capital gains rates no matter how long you held the contract. In a winning year it is usually the cheapest of the four, which is why some tools lead with it. (We walk through it in the Section 1256 explainer.)

But the same section has an exclusion. Section 1256(b)(2)(B) says a Section 1256 contract does not include “any interest rate swap, currency swap, basis swap, interest rate cap, interest rate floor, commodity swap, equity swap, equity index swap, credit default swap, or similar agreement.” Congress added that line in 2010 specifically to keep swaps out of 60/40 treatment. It is also the clause at the heart of how Kalshi’s new perps are taxed.

Skeptics of Section 1256 for event contracts have leaned on this exclusion all year. Patrick Camuso and Sulolit Mukherjee made the argument in Tax Notes Federal in June. The Tax Law Center at NYU Law made it again on October 5, before the proposal came out:

“Ironically, the CFTC’s current characterization of sports event contracts as ‘swaps’ could actually undermine taxpayers’ attempts to frame these contracts as section 1256 contracts.”

Four days later the CFTC proposed making that characterization formal. The exclusion still has an open question in it: nobody has tested whether a yes/no event contract is “similar” to the rate and price swaps the statute lists by name, and the proposal itself notes that a contract structured as a futures contract falls outside the swap definition. So this does not end the Section 1256 argument. It makes it harder, and it makes the “we file under Section 1256” pitch a heavier bet than it looked a month ago.

Does “not a swap” mean sportsbook-style tax for exchanges?

The interim rule says a licensed sportsbook bet is not a swap. It does not say an exchange contract is not a wager for tax purposes, and tax law does not draw its lines by venue.

That is the core of the Tax Law Center paper. Its authors look at the plain meaning of “wagering,” decades of case law, and the rule that courts judge the substance of a transaction rather than its label. They conclude that “the best reading of the code is that sports event contracts on prediction markets appear to be ‘wagers’ and ‘wagering’”, which would mean ordinary income on winnings, the gambling loss limits (including the 90% cap from 2026), and the federal wagering excise tax on the platform side.

That is one serious, well-argued view, not a ruling. It is also limited to sports contracts. An election or CPI contract is a harder fit for “gambling,” and the paper says as much by keeping its scope narrow.

Where each of the four methods stands now

What to actually do

1. Do not amend anything because of a proposal. It is not final, it is not tax law, and the comment period has not closed.
2. Price your year all four ways before you pick one. The gap between the cheapest and the most expensive method is often thousands of dollars, and that gap is the number you are really deciding on.
3. Keep the full record. Whichever way the IRS eventually goes, a complete trade history with fees and settlement dates lets you re-run the year. A screenshot of your P&L does not.
4. If you have a view, say it. Anyone can comment on the proposal at regulations.gov under RIN 3038-AF82 until November 18, 2026.

How WagerMints fits

This is the situation WagerMints was built for. We do not pick a method for you and then defend it. We run all four on your actual trades and show what each one costs, with the citation behind it. Section 1256 is in the report, labelled as contested, and switched off entirely for offshore Polymarket wallet trades, which were never on a CFTC exchange in the first place. When the IRS finally speaks, you re-run the same file and see what moved.