Definition
Minus money means a negative American odds price, such as -150. It shows the favorite side of a bet and tells you how much you must risk to win $100 in profit.
For odds of -A, the implied probability is:
A / (A + 100)
The profit on a stake is:
stake × 100 / A
Worked Example
At -150 odds, a bettor risks $150 to win $100 in profit. A $60 bet at -150 would win:
60 × 100 / 150 = $40
The total payout would be $100: the original $60 stake plus $40 profit.
The implied probability is:
150 / (150 + 100) = 0.60
So a -150 line implies a 60% break-even probability before accounting for sportsbook margin.
Why It Matters
Minus money helps a bettor see the break-even rate needed before placing a favorite. It is useful when comparing a personal projection against the sportsbook’s implied probability.