Kalshi Fees vs Sportsbook Vig: The Real Cost Math
Kalshi charges roughly 7% on winnings. Sportsbooks embed vig in every line. Same trade, very different cost structure — and it diverges fast once you stack legs. Here is what you actually pay on each platform across real trade types.
The Two Fee Models in One Paragraph
A sportsbook takes its cut up front. A -110 line pays you $0.91 per dollar risked on a 50/50 outcome — about 4.5% vig per side. The book pockets that whether you win or lose. Kalshi takes its cut on the back end. You buy a contract at the order-book price and pay 7% of your profit only if you win. No hidden spread, no embedded multiplier compression. Two completely different cost shapes. Which is cheaper depends entirely on what kind of trade you are running.
Real Cost by Trade Type
| Scenario | Stake | Kalshi | Sportsbook | Cheaper |
|---|---|---|---|---|
| Single 60¢ YES contract held to win | $100 stake | $4.67 (7% of $66.67 profit) | ~$4.50 vig on equivalent -150 line | Book |
| Single 40¢ YES contract held to win | $100 stake | $10.50 (7% of $150 profit) | ~$10 vig on equivalent +150 line | Book |
| 2-leg combo (both 60¢) | $100 stake | ~7% of profit if both hit | 8–10% compounded vig (-110 × -110) | Kalshi |
| 3-leg parlay / combo | $100 stake | 7% of profit at settlement | 12–18% compounded vig | Kalshi |
| 4-leg player-prop parlay | $100 stake | 7% on the winning ticket | 15–25% implied hold | Kalshi |
| Losing position | Any | $0 fee (lose stake only) | $0 fee (lose stake only) | Tie |
Why Kalshi Wins on Multi-Leg Trades
Sportsbook parlays compound vig multiplicatively. Each -110 leg keeps roughly 4.5% for the book; chain four of them together and the implied hold blows past 20% by the time the multipliers are normalized to fair odds. Kalshi combos do not compound — the platform takes 7% of the winning ticket whether the combo has 2 legs or 7.
Worked example: Four 60¢ YES contracts on Kalshi for $25 each ($100 stake). All four hit → ticket pays roughly $200 profit. Kalshi takes 7% ≈ $14. Same four +120 sportsbook parlays at $100 stake → fair payout ~$2,200 if legs were +130 each, but standard parlay multipliers compress that to ~$1,800–$1,900. That gap — typically $200–$400 on a 4-leg ticket of this size — is the parlay vig.
Price your own combo on the Kalshi parlay calculator →When the Sportsbook Is Actually Cheaper
Honest math: on a single -110 sportsbook position you have a clear edge on, the embedded 4.5% vig is lower than Kalshi's 7% on winnings. If you only trade singles and you have a strong opinion on a major sport market, a sportsbook can be marginally cheaper per ticket. The structural cost gap reverses on:
- →Multi-leg combos or parlays (Kalshi gets cheaper every additional leg)
- →Player props (sportsbook props typically carry 6–8% vig per leg)
- →Long-tail futures (sportsbook books pad futures hold to 25–35%)
- →Politics, economics, weather (sportsbooks rarely list these at all)
- →Active traders qualifying for Kalshi Pro fee reductions
How DraftKings Predict and FanDuel Predicts Compare
DraftKings Predict and FanDuel Predicts both embed fees in the price spread the same way their sportsbook products embed vig in the line. The exact spread varies by market and is not published as a flat fee. That makes the effective cost less transparent than Kalshi's 7% settlement fee — you do not always know what you are paying until you compare equivalent prices side by side.
Fees FAQ
How much does Kalshi charge in fees?
Standard Kalshi accounts pay roughly 7% on winnings at settlement. Active traders qualify for reduced fees under the Kalshi Pro program. There is no fee on losing positions and no embedded spread the way a sportsbook builds vig into every line.
What is the vig at a typical sportsbook?
Standard sportsbook vig on a two-sided market is around 4–5% (-110/-110 lines). Parlays compound: a 4-leg parlay typically carries 15–25% implied hold once the multipliers are normalized to fair odds. Player props frequently price at 6–8% vig per leg.
Is Kalshi cheaper than a sportsbook?
On single contracts, the sportsbook vig (4–5%) is lower than Kalshi 7% on winnings — but you only pay Kalshi 7% if you win. On parlays and player props, Kalshi is structurally cheaper because there is no compounding multiplier hold. On a 3-leg combo, Kalshi is usually meaningfully cheaper.
How does DraftKings Predict pricing compare?
DraftKings Predict embeds fees in the price spread the same way the DraftKings sportsbook embeds vig in the line. The exact spread varies by market and is not published as a flat fee. Kalshi's 7% settlement fee is transparent and applies only to winning positions.
Can I reduce Kalshi fees?
Yes. Kalshi Pro tiers reduce the settlement fee for traders meeting volume thresholds. Active traders, market makers, and high-frequency participants typically qualify. Fee reductions kick in incrementally as volume grows.
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