Hold Percentage Calculator
Enter market odds and see the sportsbook hold, total overround, no-vig fair probabilities and fair decimal odds. Use it to spot expensive books before you even think about edge.
How hold percentage works
Bookmakers price each outcome so the implied probabilities add up to more than 100%. That extra amount is the hold, also called overround or margin.
What hold is good?
| Hold | Meaning | Typical market |
|---|---|---|
| 0-2% | Very sharp / exchange-like | Major markets, closing lines |
| 2-5% | Competitive | Tennis moneylines, big events |
| 5-8% | Expensive but common | Smaller events, props |
| 8%+ | Very expensive | Outrights, niche books, weak liquidity |
Why this matters for tennis betting
A 4% hold means the average bettor loses 4% before any skill difference. A 9% hold means your model must be materially better just to break even. Before comparing your probability to odds, strip the hold and compare against the no-vig fair probability.
Want hold-adjusted tennis picks?
TIPERO compares model probability against market price and only shows +EV picks. Start with EUR 1 first-week access.
Start EUR 1 accessFAQ
Is hold the same as vig?
In practical sportsbook language, yes. Hold, vig, juice, margin and overround all refer to the bookmaker edge built into the market.
Can a market have negative hold?
Rarely, yes. If the implied probabilities sum to under 100%, the market has an arbitrage gap. It usually disappears quickly.
Should I always pick the lowest hold book?
Lower hold helps, but the actual side price matters more. Use no-vig fair probability plus your model probability to decide whether a specific bet is +EV.