Are Bonus Bet Winnings from Illinois Sportsbooks Taxable Income?
Winnings from Illinois sportsbook bonus bets are taxable. Here's how W-2G thresholds, federal withholding, and state rules apply to promo payouts.
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Yes, winnings from bonus bets are taxable income. The bonus credit itself is generally not taxable until it produces a winning payout. Once it does, the IRS treats that payout as ordinary income — same as any cash wager win. Illinois bettors need to understand both federal and state rules before they cash out a promo. You should also read How Illinois Sportsbook Promos Work: Bonus Bets Explained so you know exactly what a bonus bet stake returns versus what a cash bet returns.
When does a sportsbook have to send me a W-2G?
The IRS sets two triggers for a W-2G form. First: you win $600 or more and the payout is at least 300× the wager amount. Second: you win $5,000 or more on a single wager, regardless of the multiplier. Both thresholds apply to bonus-bet winnings. Your sportsbook looks at the payout, not whether the stake was real cash or a promo credit. Federal withholding of 24% kicks in automatically on winnings that clear the W-2G threshold. For a full breakdown of how Illinois taxes your gambling income, see Taxes on Illinois Sportsbook Winnings: What Bettors Must Know.
Can I deduct losses from bonus-bet wagers?
On your federal return, yes — with conditions. Gambling losses can be itemized on Schedule A up to the total amount of gambling winnings you report. You cannot deduct more than you won. On your Illinois state return, no deduction is available at all. Illinois does not allow itemized deductions, so every dollar of gambling winnings is taxed in full at the state level. Keep a log of every wager — win or loss — throughout the year.
How do the W-2G rules apply differently across common promo types?
| Promo Type | Stake Returned With Winnings? | W-2G Based On | Federal Withholding Risk |
|---|---|---|---|
| Cash first bet (no promo) | Yes | Total payout vs. stake; $600+ at 300× or $5,000+ | 24% above threshold |
| Bonus bet (stake not returned) | No — profit only | Winning payout amount; same IRS thresholds apply | 24% above threshold |
| No-sweat refund (loss refunded as bonus bets) | No — refund is non-withdrawable credit | Any winning payout the bonus bet generates; same IRS thresholds | 24% above threshold |
Does it matter which sportsbook issued the bonus bet?
No. The IRS rules are the same regardless of operator. Whether you redeemed a promo at DraftKings or any other licensed Illinois book, the withholding and reporting thresholds are identical. If you want to compare current welcome offers before you sign up, check out Best Illinois Sportsbook Promos Ranked Right Now. For operator-specific promo details, the DraftKings Illinois Promo: Full Review for 2026 is a useful starting point.
Betting availability is limited to adults 21 and older in Illinois. Bonus structures vary by operator and can change without notice; always confirm current terms directly with the book. Gambling problem? Call 1-800-GAMBLER.
Disclosure: Illinois Sportsbook Promos may earn a commission if you open an account through links on this page. That never changes our ratings or the facts we report.