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Free Parlay Tax & Vig Compounding Calculator

See How Much Hidden Tax Sportsbooks Charge on Your Parlay

A single -110 bet carries a 4.5% house edge, but a 3-leg parlay compounds that tax to 13.0% unless your legs positively correlate.

Live Matchup Edges Today
NFLInjury Blindspot
KC Chiefs @ LA Chargers
K. Hunt Over 48.5 Rush Yds (-110)

I. Pacheco OUT (Fibula) -> Kareem Hunt inherits 68% goal-line and early-down share. Model projects 62.4 rush yds.

63% Win Prob
NFL14.8% Bookie Tax
DET Lions @ GB Packers
3-Leg NFC North SGP (@ +485)

Compounded sportsbook hold eats 14.8% of your slip. Devigged fair price is +395 without correlated positive lift.

Offered +485
NBAInjury Blindspot
DEN Nuggets @ GS Warriors
J. Murray Over 26.5 Pts (-115)

N. Jokic OUT (Ankle) -> Murray usage rate jumps from 27.2% to 34.8% without Jokic on floor. Model projects 31.8 pts.

64% Win Prob
NBA16.4% Bookie Tax
BOS Celtics @ NY Knicks
3-Leg Atlantic Clash (@ +525)

Standard 3-leg NBA parlay carries a massive 16.4% house edge. See how correlation shifts net EV positive.

Offered +525
NHLInjury Blindspot
EDM Oilers @ VAN Canucks
L. Draisaitl Over 3.5 SOG (-110)

C. McDavid OUT (Lower Body) -> Draisaitl absorbs PP1 sole center minutes and shot volume (+31% boost). Model projects 4.7 SOG.

65% Win Prob
NHL15.2% Bookie Tax
COL Avalanche @ DAL Stars
3-Leg Central Showdown SGP (@ +470)

Compounded 15.2% juice on this NHL 3-leg ticket. Audit fair value vs un-correlated books before placing.

Offered +470

1. Customize Your Parlay Legs (3)

Adjust sportsbook American odds and each leg's true win chance

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Parlay Audit Receipt

3-Leg Parlay @ +596

F· Bookie Trap
Hidden Bookie Tax
-$13.03
-13.0% compounded vig per $100 bet
Net Expected Value (After Correlation)
-$13.03
-13.0% edge · True Odds +700
Sportsbook Offered Odds+596 (6.96x)
Fair No-Tax Odds+700 (8.00x)
True Win Probability12.50%
Sportsbook Implied Probability14.37%
Sportsbook Payout on $100$695.79
True Fair Payout on $100$800.00
Sponsored

Paying 13.0% bookie tax on this slip? Compare prediction-market prices on Polymarket (no sportsbook vig, just the spread), or shop the same slip at DraftKings, FanDuel and Fanatics.

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