World Cup Bettors Could Save Up to 17% in Taxes via Prediction Markets
Key Takeaways
- During the 2026 World Cup, bettors using prediction markets structured as investments could see effective tax rates as low as 0-20%, compared to up to 37% for sportsbook wagers.
- This tax arbitrage could drive capital flows to platforms like Kalshi and Polymarket.
Mentioned
Key Intelligence
Key Facts
- 1Prediction market bettors could deduct 100% of losses against gains (plus up to $3,000 against ordinary income), while sportsbook bettors can only deduct losses to the extent of winnings and only if itemizing.
- 2The most aggressive tax position: event contracts may qualify as Section 1256 contracts, resulting in 60% long-term/40% short-term capital gains tax split regardless of holding period.
- 3The IRS has issued no specific guidance on the tax treatment of prediction market event contracts as of July 2026.
- 4The 2026 FIFA World Cup, which began June 11, is driving a surge in betting, highlighting the tax disparity between platforms.
- 5Gambling wins are taxed as ordinary income at rates up to 37%, whereas investment gains can be as low as 0% for long-term holdings under certain income thresholds.
- 6Tax experts warn that aggressive positions risk IRS challenge under the substance-over-form doctrine, which looks beyond the legal structure of a transaction.
Potential tax savings using prediction markets vs sportsbooks under aggressive interpretation
Who's Affected
Analysis
For institutional investors and retail traders eyeing the $1.5 trillion global gambling market, the tax disparity between prediction markets and sportsbooks isn't just a compliance footnote—it's a potential alpha generator. If the IRS continues to treat event contracts as investments, prediction market platforms could capture significant market share from traditional betting.
As the 2026 FIFA World Cup entered its knockout stage in mid-July, millions of Americans placed bets not only at traditional sportsbooks but also on emerging prediction market platforms like Kalshi and Polymarket. What many may not realize is that the tax treatment of those wagers could differ dramatically—potentially cutting the effective tax rate by 17 percentage points or more—because prediction market contracts are legally structured as financial instruments rather than gambling wagers. The Internal Revenue Service has remained conspicuously silent on the classification, creating a high-stakes tax arbitrage opportunity for bettors and a compliance headache for tax professionals.
In contrast, investment gains enjoy preferential capital gains rates: 0%, 15%, or 20% for long-term holdings, with the full deduction of capital losses against gains and an additional $3,000 allowance against ordinary income.
Under current U.S. tax law, gambling winnings are treated as ordinary income, subject to federal rates as high as 37% for top earners, plus state taxes. Losses can only be deducted to the extent of winnings and only by taxpayers who itemize deductions, making it a punitive regime for high-frequency bettors. In contrast, investment gains enjoy preferential capital gains rates: 0%, 15%, or 20% for long-term holdings, with the full deduction of capital losses against gains and an additional $3,000 allowance against ordinary income. Some tax practitioners argue that event contracts—standardized, exchange-traded products that pay out $0 or $1 based on the outcome of a future event—may qualify for the even more favorable Section 1256 mark-to-market rules. Under Section 1256, gains are taxed as 60% long-term capital gain and 40% short-term, regardless of the holding period, yielding a blended top rate of just 23.6% under current law. For a World Cup bettor in the highest bracket, this could mean an effective tax rate nearly 13.4 percentage points lower than on a sportsbook win—or up to 37 percentage points lower for lower-income filers who might owe 0% on the long-term portion.
The practical consequences are already visible. The 2026 World Cup, which began June 11 and runs through July 19, is expected to generate billions in betting handle globally. Prediction market platforms have seen a surge in trading volume on World Cup-related event contracts, from match winners to goal totals. Kalshi, the first CFTC-regulated prediction exchange, lists contracts that settle to cash based on verified outcomes. Polymarket, a crypto-native decentralized platform, facilitates similar trades using smart contracts on a blockchain, though it operates outside U.S. regulatory permission. Both promote the investment-like nature of their products, yet neither can guarantee the tax treatment. Tax preparers interviewed by Accounting Today say they are fielding inquiries from clients who want to report prediction market winnings as capital gains, but are advising caution. The IRS has historically employed the substance-over-form doctrine to recharacterize transactions that are economically equivalent to gambling, and a court challenge could upend any aggressive filing position.
What to Watch
The legal ambiguity is compounded by the political sensitivity around prediction markets. In recent years, high-profile figures like Elon Musk have reportedly explored prediction market ventures, and the CFTC has been both courted and criticized for its oversight. The IRS, which is already grappling with guidance on cryptocurrency staking, DeFi income, and digital asset basis tracking, may be reluctant to issue a ruling that either legitimizes or heavily restricts a politically charged product during an election year. That leaves bettors in a gray zone: they can claim the tax benefits but must weigh the risk of an IRS audit, accuracy-related penalties of 20% of the underpayment, and possible interest. For those who made substantial profits, the tax savings could be significant enough to justify the risk, but for average bettors, the administrative burden alone may be prohibitive.
Looking ahead, the outcome of this tax uncertainty could reshape the rapidly growing prediction market industry. If the IRS eventually blesses investment treatment, event contracts could become a staple of retail trading accounts alongside stocks and ETFs, further blurring the line between betting and investing. Platforms would attract capital not only for sports but for political and economic events, potentially competing with traditional derivatives exchanges. Conversely, a ruling that such contracts are gambling would dent the platforms’ value proposition, possibly forcing them to restructure or face a exodus of tax-conscious users. In the immediate term, tax advisors are urging clients to document their trades meticulously and consider filing protective refund claims. As the World Cup reaches its final, millions of dollars in tax liability hang on a question the IRS has yet to answer: when is a bet not a bet?
Cite This Page
"World Cup Bettors Could Save Up to 17% in Taxes via Prediction Markets." Finance Intelligence Brief, July 13, 2026. https://getfinancebrief.com/story/17pct-tax-edge-world-cup-prediction-markets-finance
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