A what does moneyline mean in betting is the simplest type of sports wager—you’re betting on who will win outright.
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Favorites are marked with a minus sign (e.g., -150), meaning you must bet $150 to win $100.
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Underdogs are marked with a plus sign (e.g., +130), meaning a $100 bet wins you $130. There is no point spread to cover; as long as your chosen team wins the game, your bet is a winner.
Understanding the moneyline takes about five minutes, and once you get it, every other bet type becomes easier to understand.
How to Read a Moneyline
Moneylines are expressed as positive or negative numbers:
| Moneyline | Meaning |
|---|---|
| −150 | You must bet $150 to win $100 profit (favorite) |
| +130 | You win $130 profit on a $100 bet (underdog) |
| −110 | Standard line; bet $110 to win $100 |
| +100 (even money) | Bet $100, win $100 |
Negative number = favorite. The bigger the negative, the bigger the favorite.
Positive number = underdog. The bigger the positive, the bigger the underdog.
Calculating Payouts
For Negative Moneylines (Favorites)
> Profit = (Bet Amount / |Moneyline|) × 100
Example: Bet $200 on a −150 favorite
Profit = ($200 / 150) × 100 = $133.33
Total return = $200 (stake) + $133.33 = $333.33
For Positive Moneylines (Underdogs)
> Profit = Bet Amount × (Moneyline / 100)
Example: Bet $100 on a +200 underdog
Profit = $100 × (200/100) = $200
Total return = $100 (stake) + $200 = $300
Real-World Example: NFL Game
| Team | Moneyline | To Win $100 | Profit on $100 Bet |
|---|---|---|---|
| Kansas City Chiefs | −180 | Bet $180 | $100 |
| Las Vegas Raiders | +155 | Bet $100 | $155 |
If you think the Chiefs will win, you risk $180 to profit $100. If you back the underdog Raiders, a $100 bet returns $155 profit – but the Raiders are less likely to win.
Implied Probability: What the Moneyline Really Says
Every moneyline implies a win probability. Here’s how to calculate it:
For negative lines:
> Implied Probability = |Moneyline| / (|Moneyline| + 100)
For −180: 180 / (180 + 100) = 64.3%
For positive lines:
> Implied Probability = 100 / (Moneyline + 100)
For +155: 100 / (155 + 100) = 39.2%
The Vig (Juice): Why the Book Always Has an Edge
Notice something: 64.3% + 39.2% = 103.5% – not 100%.
That extra 3.5% is the sportsbook’s built-in margin, called the vig or juice. It ensures the book profits regardless of the outcome if money is wagered evenly on both sides.
| Concept | What It Means |
|---|---|
| Vig/juice | Sportsbook’s profit margin built into every line |
| Standard vig | Typically 4-5% on most moneyline bets |
| “Beating the vig” | The challenge every serious bettor faces |
Sportsbooks set lines to attract balanced action, not to predict outcomes perfectly. Understanding the vig is essential to evaluating whether a bet has genuine value.
Moneyline vs Point Spread
| Feature | Moneyline | Point Spread |
|---|---|---|
| Bet on | Who wins | Win by how much |
| Payout varies? | Yes – based on odds | Usually standard (−110 both sides) |
| Simpler? | Yes | More complex |
| Better for upsets? | Yes – underdogs pay more | Underdog can cover even in a loss |
The Bottom Line
A moneyline bet is a straight-up winner prediction. Negative numbers show how much to risk for $100 profit; positive numbers show how much you’ll profit on $100. Always calculate the implied probability before placing any moneyline bet – if your own assessment of a team’s chances is higher than what the moneyline implies, that’s where potential value lives.
