BSP vs Fixed Back
If you’d back at 3.40 10 minutes out but BSP settles at 3.80, BSP improved your price. If BSP settled at 3.20, you’d have done better taking 3.40 early. Your net still considers commission.
A consumer‑friendly dashboard for thoroughbred (gallops), harness (trots), greyhounds and sports. Check typical commission ranges, understand BSP, and calculate net profit after commission for both Back and Lay bets. Optionally add your win probability to see expected value (EV).
| State / Code | Product | Typical MBR | Notes |
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MBR = Betfair's maximum commission % on net winnings per market. Actual rates vary per market; always check the market Rules panel before betting.
For Back bets this is the chance your selection wins. For Lay, it's the chance the selection wins (your losing outcome).
Commission is charged only on winning markets. For Lay bets, remember your liability is stake × (odds − 1).
BSP is the Exchange‑derived starting price at the jump. It’s popular on Australian thoroughbred, harness and greyhound races because late liquidity often sharpens prices. You won’t know the exact number until the race begins, but you avoid babysitting the market in the final minute. Many punters use BSP when they can’t watch late moves live.
If you’d back at 3.40 10 minutes out but BSP settles at 3.80, BSP improved your price. If BSP settled at 3.20, you’d have done better taking 3.40 early. Your net still considers commission.
You can also lay at BSP. Your stake is the backer’s stake and your risk is the liability. If the horse loses, you win the backer’s stake (less commission).
High‑liquidity metro meetings near the jump, or when you can’t monitor late price action. For thin country meetings, manually placing prices may give more control over fills.
Commission is applied to your net winnings in a market. If you win on Runner A and lose on Runner B within the same market, the losses offset the winnings before commission is applied. If your net is negative, no commission is paid.
Market Base Rate (MBR) is the maximum commission rate for that market (e.g., 8%, 10%). Actual charged rates can vary by promotions or products; check the market Rules.
Your potential loss if the selection wins: stake × (odds − 1).
EV is your average outcome per bet considering both outcomes and their probabilities. In the calculator, add your probability to see EV after commission.