Are Polymarket Winnings Taxable in 2026? Prediction Markets in 7 Countries
You won an election bet, got paid in USDC, and no form arrived. That doesn't mean the gain is invisible or tax-free. The US alone can label it a capital gain, a Section 1256 contract or wagering — and the label now changes how much of your losses count. Here's the seven-country reality.
Image: Illustrative purposes. Rules referenced from IRC §1256 and §165(m) (as amended by the One Big Beautiful Bill Act), IRS Notice 2014-21, HMRC gambling and trading guidance, German income-tax principles, CRA windfall/business guidance, ATO recreational-vs-business gambling guidance, Japanese NTA guidance and Indian Income Tax Act §115BB.
On a Monday night in November 2024, a friend watched a prediction market resolve in his favour and a five-figure USDC balance land in his wallet. His first message to me was celebratory. His second, a week later, was: "I didn't get any form. Do I even report this?"
Yes. Prediction markets have become the fastest-growing corner of crypto-adjacent finance — election outcomes, Fed decisions, sporting events, court rulings — but the tax treatment is a genuine three-way mess, and the "no form means no problem" assumption is exactly how people end up in the audit pool. Let's untangle it, starting with why the product matters more than the platform.
1. The US: one activity, three possible labels
American prediction-market users can have the same dollars characterised three different ways:
- Property / capital gain. Blockchain prediction shares bought and sold in USDC look like any other crypto-asset under Notice 2014-21: buying a YES share is acquiring property; selling it or having it resolve for $1 is a disposal with a capital gain or loss. This is the conservative default most practitioners use for offshore-style platforms.
- A Section 1256 contract. Certain regulated event contracts traded on a CFTC-regulated venue can fall into §1256 — the same 60/40 split and year-end mark-to-market that govern regulated futures, covered in the futures and perps guide. The venue's regulatory status decides this, not the bet topic.
- Wagering income. If the position is legally a wager, winnings are ordinary income and losses are gambling losses, subject to the new limitation below.
Regulators have been actively reshaping the category — the CFTC has moved event contracts toward swaps/futures treatment and onshore venues have gained approvals — so the 2026 label for a given product may differ from 2024. The only honest summary: identify the exact venue and instrument, and don't assume "it's just a bet."
2. Why the label now costs real money: the 90% loss cap
This is the 2026 development every prediction-market trader needs. The One Big Beautiful Bill Act changed IRC §165(m) so that, for tax years beginning after 31 December 2025, deductible wagering losses are capped at 90% of wagering gains (with the limit phasing back in later years). In plain English: if your activity is put in the wagering box, 10% of your gross winning volume is left exposed even if your losing bets offset almost all of it. A year where you won $100,000 and lost $98,000 — nearly break-even — could still produce a federal tax bill on the un-offset slice.
Under capital-asset treatment, by contrast, gains and losses net normally. So the characterisation is not academic; it can turn a flat year into a taxable one. Because the statute is brand new and its phase-out schedule matters, confirm the current numbers with a US professional rather than filing off a blog number.
3. UK and Germany: casual windfall vs. the skilled operator
In the UK, genuine recreational gambling winnings are generally not taxed at all — neither income tax nor CGT — and spread betting sits in the same tax-free zone. But the exemption exists for the casual punter, not the operation. Systematic, skilled, staked, repeat prediction-market trading that looks like a business is assessed as trading income at up to 45% plus National Insurance. The person betting £20 on the election for fun is nowhere near that line; the person running models across 400 markets for a living is squarely on the wrong side of it.
Germany reaches the same place conceptually. A private individual's occasional gambling winnings are generally not subject to income tax. But regular, skilled participation structured like a business can be treated as a self-employed or commercial activity and taxed in full. "Occasional and private" versus "sustained and organised" is the dividing line, same as in the UK.
4. Canada and Australia: the windfall principle has an edge
Both countries tax business income but generally leave genuine windfalls alone. In Canada, a casual gambling windfall isn't ordinarily taxable — yet the CRA consistently argues that a skilled, systematic, profit-seeking operation (poker pros, syndicates, organised bettors) carries on a business and is fully taxable. Prediction markets are especially exposed because the "skill" defence is the whole product: people build data models, read polls and order books, and treat it as a market, not a roulette wheel. The ATO applies the identical recreational-versus-business distinction; a hobby flutter is not assessable, an organised edge is.
5. Japan and India: the strictest two
Japan taxes gambling-type winnings far more broadly than the Anglo countries do. Prizes and betting gains (horse racing, lottery-style and similar) generally fall into taxable income categories such as temporary or miscellaneous income, and gains from overseas platforms are not automatically exempt just because they were won abroad. A profitable Polymarket account from Japan should be treated as taxable income and reported, not assumed to be a tax-free windfall.
India is unambiguous: winnings from betting, gambling and online money games are taxed at a flat 30% under §115BB (plus cess), with tax deducted at source on applicable payouts, and losses from gambling cannot be set off against other income. Whether an event-contract gain is styled VDA income or a betting prize, the outcome is a high flat rate with minimal loss relief — India offers the least favourable prediction-market treatment of the seven.
6. The 7-country map
| Country | Casual / recreational | Skilled, frequent, business-like |
|---|---|---|
| US | Capital gain default; possibly wagering; regulated event contracts may be §1256 | Trader/business treatment; §165(m) 90% loss cap if wagering |
| UK | Gambling/spread-bet winnings generally exempt | Trading income up to 45% + NI |
| Germany | Occasional gambling winnings generally untaxed | Commercial activity taxed in full |
| Canada | Windfall generally not taxed | Business income, fully taxable |
| Australia | Recreational gambling not assessable | Business/professional gambling assessable |
| Japan | Betting/prize gains generally taxable as income | Taxable; business filing if sustained |
| India | Flat 30% §115BB + cess + TDS; no loss offset | Same flat 30%, no relief |
7. The stablecoin trap before the bet
Most prediction-market tax errors happen before the trade resolves. Funding an account creates up to three separate taxable moments:
- Leg 1 — funding: Converting BTC/ETH/another coin into USDC to place bets is a crypto-to-crypto disposal with its own gain or loss. Depositing USDC you already own is just a non-taxable transfer.
- Leg 2 — the bet: Buying and selling the outcome share, or holding it to resolution, produces the prediction-market gain or loss discussed above.
- Leg 3 — cashing out: Converting USDC winnings back into another coin is another disposal. Holding the USDC is not.
That's why a stablecoin balance is the tax-clean way to play — one event instead of potentially three. The mechanics are the same as any stablecoin conversion in the stablecoin tax guide.
8. No form, but nowhere to hide
Polymarket-style platforms have historically not issued US 1099s. That fact is doing a lot of unjustified work in people's heads. The winnings arrive in a self-custodied wallet on a public blockchain, the USDC on- and off-ramps run through regulated issuers and exchanges that do file forms, and from 2026 the OECD's CARF brings automatic exchange of crypto-account data between participating authorities. A chain that starts with a fiat deposit, moves through a stablecoin, and cashes back to your bank is reconstructable without any form from the prediction venue itself.
9. What to keep
- Every market: question, shares bought (YES/NO), price, quantity, entry and resolution/exit timestamps, payout in USDC.
- The funding path: which coin was converted to USDC and at what value.
- Running wins and losses separately — don't report only the net withdrawal to your bank.
- The venue's regulatory status for the year, which determines the capital-vs-1256-vs-wagering label.
Bottom line
Prediction-market winnings are taxable everywhere on this list; the only real question is the label. Americans face a genuine three-way characterisation with a brand-new 90% loss cap inside the wagering box, so venue and product classification is worth real money. UK, German, Canadian and Australian players get a casual-windfall exemption that evaporates the moment the activity looks skilled and organised — and a modelled, 400-position Polymarket account usually does. Japan and India simply tax it. Fund from USDC to avoid three taxable events, keep the full ledger, and compute each resolved market in the calculator before the year ends.
General information, not tax advice. Event-contract classification and the §165(m) wagering-loss phase-out are new and evolving, and platform accessibility differs by jurisdiction. Consult a tax professional familiar with both the venue's regulatory status and your country's gambling-vs-trading boundary.
FAQ
Are Polymarket winnings taxable income?
Yes, almost certainly taxable somewhere, even though Polymarket does not hand you a 1099. In the US, a winning event position is generally a gain that must be reported, and it can be characterised in three ways depending on the venue and product: as a capital gain or loss on property (the conservative default for blockchain prediction shares bought and sold in USDC), as a Section 1256 contract with the 60/40 split for certain regulated event contracts traded on a CFTC-regulated venue such as Kalshi, or as wagering income. The absence of a form is not an exemption — the blockchain and the stablecoin on/off-ramp create their own record, and CARF reporting begins in 2026.
Are prediction market gains treated as tax-free gambling winnings in the UK and Germany?
Sometimes for casual players, never rely on it as a professional. In the UK, genuine recreational gambling or spread-betting winnings are generally outside income tax and CGT, but systematic, skilled, organised prediction-market participation for profit can be assessed as trading income at income-tax rates. Germany similarly does not tax a private individual's occasional gambling winnings under income tax, but treats regular, skilled, business-like betting as taxable activity. Canada and Australia reach the same split by a different route: an occasional windfall is generally not taxed, while a skilled, repeated, profit-making operation is business income. The pattern across all four is casual windfall exempt, professional edge taxable — and a data-driven Polymarket account with hundreds of positions looks far more like the latter.
What changed for US gambling losses in 2026?
The One Big Beautiful Bill Act amended the wagering-loss rules in Internal Revenue Code Section 165(m), so that for tax years beginning after 31 December 2025, deductible wagering losses are capped at 90% of wagering gains (phasing back toward full deductibility in later years). That means even a roughly break-even year can produce a small federal tax bill if your activity is characterised as wagering, because 10% of gross gains are left exposed with no offsetting loss. This makes the label on prediction-market activity economically significant: capital-asset treatment lets losses offset gains normally, whereas the wagering box brings the 90% limitation. The law and its phase-out are new, so confirm the current numbers with a US tax professional before filing.
Is moving crypto into USDC to bet on Polymarket itself a taxable event?
Potentially — and this is the step people miss. Depositing USDC you already hold onto a platform is a self-transfer and not taxable. But if you convert bitcoin, ether or any other crypto into USDC first in order to fund a bet, that conversion is a crypto-to-crypto disposal that realises a gain or loss in the US, UK, Canada, Australia, Japan and India before the prediction trade even happens. You then have a second taxable event when the event position resolves or you sell the shares. Cashing winnings back from USDC into another coin is a third. Funding from a stablecoin balance avoids the extra event; funding from volatile crypto does not. Track all three legs separately.
Written by
CryptoTaxCalc TeamA small team of crypto investors and tax researchers. Every guide is cross-checked against primary tax-authority sources (IRS, HMRC, BMF, CRA, ATO) before publication. About the team & all articles →