Expected Value (EV) in Betting Explained

Expected value is the maths behind every profitable bet. Here's what +EV means, how to work it out, and why it matters more than any single result.

Updated 25 July 2026.

Expected value — EV — is the single most important concept in profitable betting. It's what 'value' actually means underneath the jargon, and understanding it helps you tell a tipster with a real method from one who's simply guessing.

More on betting metrics & staking

• What is ROI in Betting? Return on Investment Explained
• Yield vs ROI in Betting: What's the Difference?
• Strike Rate Explained: Why Winning Often Isn't Enough
• Value Betting Explained: The Key to Long-Term Profit
• Betting Bank Management: Staking Plans That Protect Your Money
• Flat Stakes Explained: The Simplest Staking Plan

Related term: Expected Value in our betting glossary.