Betting mathematics
Reverse Bet Calculator: Two-Way If-Bet Results
Model A then B and B then A as two separate if-bet chains. Each activated wager uses the same amount at risk; select the continuation rule that matches your example.
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How a reverse bet differs from a parlay
This model starts one wager on A and one on B, in separate chains. In A then B, the B wager activates only if A satisfies the selected continuation rule. B then A works in the opposite order. Each activated wager is settled as a straight bet; its odds are not multiplied into a parlay price.
For a wager risking S at decimal D, a win profits S × (D − 1), a loss loses S and a push returns the risk with zero net. Add the activated wager results within each chain, then add both chains. The model fixes risk per wager, rather than a target amount to win.
Two-team reverse bet examples
With $100 risk per activated wager at even money, A and B both winning activate four winning wagers, giving +$400 combined net. If A wins and B loses, A then B nets $0, while B then A loses $100 and stops: −$100 combined. If both lose, each opening wager loses, for −$200 total.
A push can matter: with A pushed and B winning, action continuation gives +$200 combined net at even money. Win-only continuation stops the A-first chain and gives +$100 combined. This is why the continuation rule must be stated.
Check the stake convention and house rules
Reverse and action-reverse products can use different risk/to-win stakes, continuation rules or restrictions. The initial two stakes displayed here are not a sportsbook’s required deposit or maximum-liability quote. It is a transparent two-selection, equal-risk model; multi-team birdcages and operator-specific financing rules are not covered.
For multiplied multi-leg odds use the parlay payout calculator; for every smaller parlay of a set of picks use the round robin calculator.
Methodology and references
For the underlying terminology, see BetOnline definitions of if bets and reverses. This independent calculator uses the assumptions explained above; check your operator’s current settlement terms. The reference is not an endorsement or an account integration.