Modes and outcomes
Qualifying uses a cash stake. SNR excludes the free-bet stake from winnings. Risk free includes the entered Cashback if the back bet loses. This calculator does not offer an SR mode.
The outcome model assumes that no two listed winning outcomes happen together, and that they cover every way the bookmaker bet can win. Overlapping or missing outcomes invalidate that comparison. A series of accumulator selections is a different calculation.
For example, Team A to win and under 2.5 goals can be covered by 1-0 and 2-0. Laying both component conditions separately would be wrong: both could win together. The calculator’s Total liability is the maximum modelled effective exposure after other winning lays offset the losing lay, not the sum of every row’s standalone liability.