Betting
What is ROI (Return on Investment) in Betting?
Definition
The net profit or loss expressed as a percentage of total money wagered over a period. A positive ROI means the bettor is profitable, with professional sports bettors typically targeting 3-8% long-term ROI.
Related Terms
Bankroll ManagementBetting
The practice of setting a dedicated betting budget and sizing individual wagers as a small percentage of that total. Disciplined bankroll management (typically 1-5% per bet) protects against inevitable losing streaks.
Expected Value (+EV)Betting
A mathematical calculation of the average amount a bettor can expect to win or lose per bet over time. Positive expected value (+EV) bets are the only sustainable path to profitability in sports wagering.