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    Multi and SGM saver calculator

    Refund if one leg fails: what the saver adds to the multi.

    Multi / SGM saver

    Refund if exactly one leg fails. Enter the book's price and the fair price for each leg.

    $
    50
    0
    0
    0
    0
    0

    Blank uses the product of leg odds. Override for SGMs.

    $
    50
    75
    %

    Result

    Fill in the numbers to see the result.

    How it works

    • Each leg's fair chance comes from fair odds; the multi wins when every leg wins.
    • The saver pays when exactly one leg fails: Σ (1 − pᵢ) × Π of the rest.
    • EV = chance all win × winnings − chance it loses × stake + saver chance × refund value.

    Betting involves risk. Bookmakers can restrict or close accounts and void bets, automation can fail, prices move, and a positive expected value (+EV) bet can still lose. Promotions carry each bookmaker's own terms. There is no guarantee of profit. See responsible gambling for limits and support.

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    By the B337 team. Last updated 8 October 2026.

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