Calculate an extra lay for a partly matched bet, or a back stake to offset a lay placed for too much or on the wrong selection. Enter the amounts and prices that actually matched, then the current exchange odds. Review the correction, liability and resulting profit or loss before placing another bet.
A part-matched lay leaves some of the bookmaker bet unhedged. The calculation includes the exposure already matched; do not re-enter the whole original lay as a new bet.
An excess lay needs a back bet on the same exchange selection and market to offset the unwanted portion. The result depends on the price available now. Cash-out here describes a calculated correction, not an instruction sent to the exchange.
If the wrong selection was laid, use the current back price for that same selection and market with intended lay stake zero. This offsets the unwanted lay only; any separate bookmaker bet still needs its own hedge.
Back £50 at 4.00 in Qualifying mode. £20 of the lay matched at 4.10; the current lay price is 4.40 with 2% commission. Enter 4.10 in Odds you wanted (optional). This cash-bet example has no refund or bookmaker commission.
Lay another £27.03, adding £91.90 liability. Total lay stake is £47.03 and total liability £153.90. The outcomes are -£3.90 and -£3.91. Compared with a fully matched lay at 4.10, the worse result costs £1.95 more.
You laid £20 at 3.10 but intended £10. The current back price on the same exchange market is also 3.10, with 2% commission.
Back £10 to offset the excess £10 lay. This releases £21 of liability and closes that excess portion at £0. The intended £10 lay remains; the calculator has not cancelled the entire original position.
These examples use the stated inputs, not current market prices. Check settlement rules, matched amounts and available odds. Currency rounding can leave small differences between outcomes.
Enter every matched leg at its actual price. Missing prices make the exposure incomplete. If you have already laid too much, adding another lay cannot fix it; review the excess-lay workflow. This tool calculates corrections; it does not place bets or cancel exchange orders.
A matched bet cannot simply be cancelled here. An opposing bet may offset its exposure at the current price.
No. Enter only matched amounts. Separately review or cancel open unmatched orders at the exchange if appropriate.
Enter each matched portion as its own leg so the calculator includes the correct liability.
Yes. A worse available price can increase your loss. Compare the correction result before acting.
No. It only calculates the stake and outcomes from the information you enter.
For a standard single back-and-lay calculation, use the Matched Betting Calculator.