Question 1

What is liability in a lay bet?

Accepted Answer

Liability is the maximum loss you face if the bet you are laying wins. It equals the backer's stake multiplied by (lay odds − 1). For example, laying £100 at 3.0 has a liability of £200.

Question 2

Why does commission only apply when the lay wins?

Accepted Answer

Exchanges like Betfair charge commission only on net winnings, not losses. When the lay loses (the backer wins), the layer pays out the liability without any commission. When the lay wins, the layer keeps the backer's stake minus the commission percentage.

Question 3

What is a typical exchange commission rate?

Accepted Answer

Betfair charges 2-5% on net winnings depending on the market and your loyalty band. Smarkets charges 2% flat. Always check the specific market — commission can vary by sport and exchange.

Lay Bet Calculator

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Lay Bet Calculator

Inputs

Result

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