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Online Gambling Taxes 2026: Complete Guide for All Formats
By Odds Reference Published: Updated: Editorial Policy
Online gambling winnings are taxable income at the federal level regardless of format, but the tax treatment differs by category. Sports betting and casino winnings are classified as gambling income. DFS winnings are reported as Other Income. Prediction market gains have no settled IRS classification. The OBBBA 90% loss deduction cap, effective January 1, 2026, creates phantom taxable income for itemizing recreational participants who break even or lose, affecting every format except DFS.
Last Updated: September 2026
This is general information, not tax advice. Consult a qualified CPA for your specific situation.
Key Takeaways
- All gambling winnings are taxable at your ordinary federal income tax rate (10-37%), regardless of whether the platform issues a tax form.
- The OBBBA 90% loss cap, in effect since January 1, 2026, limits itemizing recreational gamblers to deducting only 90% of losses — even a break-even year creates taxable “phantom income.”
- DFS is classified differently than sports betting: DFS winnings go on Schedule 1, Line 8 (Other Income), not as gambling income.
- Prediction market taxation remains unresolved — the IRS has not issued definitive guidance on whether gains are gambling income, capital gains, or Other Income.
- Professional gamblers filing Schedule C are exempt from the 90% cap and can deduct 100% of losses plus business expenses.
How Does Federal Tax Treatment Differ by Format?
The IRS does not treat all gambling income identically. The classification determines which form you file, how losses are deducted, and what reporting thresholds apply.
| Format | Income Classification | Reporting Form | Loss Deduction | OBBBA 90% Cap Applies? |
|---|---|---|---|---|
| Sports betting | Gambling income | W-2G (if $600+ at 300:1+) | Schedule A (itemized) | Yes |
| Online casino | Gambling income | W-2G (slots $1,200+; table games $600+ at 300:1) | Schedule A (itemized) | Yes |
| Online poker | Gambling income | W-2G ($5,000+ net in tournaments) | Schedule A (itemized) | Yes |
| DFS (classic + pick’em) | Other Income | 1099-MISC ($600+) | Schedule A (itemized) | No (DFS is Other Income, not gambling income) |
| Prediction markets | Unresolved | 1099-B or 1099-MISC (varies by platform) | Unclear | Applies only if classified as gambling income |
The DFS classification as “Other Income” rather than gambling income reflects its legal status as a game of skill under the 2006 UIGEA exemption. Because the OBBBA cap only applies to losses claimed as a gambling-income deduction on Schedule A, DFS losses are exempt from it. For sports-betting-specific tax treatment, see our sports betting tax guide. For DFS taxes, see our DFS tax guide.
What Is the OBBBA 90% Loss Cap?
The One Big Beautiful Bill Act (OBBBA), effective January 1, 2026, caps gambling loss deductions at 90% of gambling winnings for recreational gamblers who itemize on Schedule A. This provision creates tax liability even for players who break even or lose money overall.
Example of the 90% cap impact:
| Scenario | Winnings | Losses | Deductible Losses (90%) | Taxable Income | Federal Tax (24%) |
|---|---|---|---|---|---|
| Break even | $50,000 | $50,000 | $45,000 | $5,000 | $1,200 |
| Small profit | $50,000 | $40,000 | $36,000 | $14,000 | $3,360 |
| Net loss | $30,000 | $50,000 | $27,000 | $3,000 | $720 |
| Large profit | $100,000 | $20,000 | $18,000 | $82,000 | $19,680 |
The break-even scenario is the most counterintuitive: a player who wins and loses $50,000 owes $1,200 in federal taxes despite zero actual profit. The net-loss scenario is worse — a player who lost $20,000 overall still owes $720 in federal taxes.
Professional gamblers filing on Schedule C are exempt from the 90% cap. They can deduct 100% of gambling losses plus business expenses (software, travel, data subscriptions). The threshold for qualifying as a professional gambler requires demonstrating that gambling is your primary trade or business, with regular hours, systematic methods, and the intent to earn income.
How Are Prediction Market Gains Taxed?
Prediction markets present the most ambiguous tax situation in online gambling. The IRS has not issued definitive guidance on how to classify prediction market gains, and platforms take different reporting approaches.
Kalshi (CFTC-regulated): Issues 1099-B forms, treating contracts as regulated financial instruments. Capital gains treatment would apply — short-term capital gains taxed at ordinary income rates, long-term gains at reduced rates (for contracts held over one year, which is rare).
Polymarket (offshore, crypto-settled): Does not issue US tax forms. Gains may be classified as gambling income, capital gains (on the underlying crypto), or both. Polymarket’s original international site still geo-blocks US IP addresses under its 2022 CFTC settlement, though a separate, regulated US pathway opened via the 2025 QCEX acquisition — see our Polymarket review for current access status.
The safest approach: report prediction market gains as income and consult a CPA familiar with derivatives taxation. The IRS is expected to provide clearer guidance as the prediction market industry matures under CFTC regulation. Whether trading is even permitted in your state is a separate and actively litigated question — see our prediction market legal tracker. Compare prediction market fees and structures on the Odds Reference dashboard.
What Records Should You Keep?
Regardless of format, maintaining detailed records is essential for accurate tax filing and audit defense. The IRS expects gambling income records to include:
- Date and type of each wager or entry
- Platform name and location
- Amount wagered or entered
- Amount won or lost
- Running balance by platform
Most platforms provide annual transaction summaries that satisfy basic record-keeping requirements. For players active across multiple platforms and formats, consolidating records into a single spreadsheet organized by format is strongly recommended.
DFS platforms report net winnings exceeding $600 on 1099-MISC forms. Sportsbooks and casinos issue W-2G forms at format-specific thresholds. In all cases, income below the reporting threshold remains taxable — the form only affects whether the IRS has visibility, not whether you owe. Use our gambling tax calculator to estimate your liability across formats. For casino-specific tax considerations, see our online casino tax guide.
FAQ
Q: Do all gambling winnings get taxed the same way?
A: No. Sports betting and casino winnings are classified as gambling income and reported on Schedule A (itemized deductions for losses). DFS winnings are classified as Other Income on Line 8 of Schedule 1 — losses are deductible only if you itemize. Prediction market winnings have no clear IRS classification yet. Professional gamblers filing Schedule C can deduct 100% of losses and business expenses regardless of format.
Q: What is the OBBBA 90% gambling loss cap?
A: The One Big Beautiful Bill Act (OBBBA), effective January 1, 2026, caps gambling loss deductions at 90% of winnings for recreational bettors who itemize on Schedule A. A player who wins $50,000 and loses $50,000 (net zero) can only deduct $45,000 of losses, leaving $5,000 taxable as phantom income. At a 24% federal rate, this break-even player owes $1,200 in taxes on zero actual profit. DFS income and professional gamblers filing Schedule C are exempt.
Q: Do I need to report gambling winnings under $600?
A: Yes. All income, including gambling winnings of any amount, is taxable and must be reported on your federal return. The $600 threshold only determines whether the platform issues a W-2G or 1099-MISC form — it does not determine your tax obligation. A player who wins $500 total across multiple small bets owes taxes on that $500 even though no reporting form was issued.