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.