Spread Betting Explained: What Is a Spread Bet?

A spread bet (short for “point spread bet”) is a wager on the margin of victory rather than just who wins. The favorite must win by more than a set number of points for a bet on them to pay off, while the underdog can lose by fewer than that number — or win outright — and still cover. Spread bets are usually priced at or near −110 on each side, meaning a $110 wager returns $210 total ($100 profit) if it wins.

How a Point Spread Works

In American sports betting, “spread” almost always refers to the point spread: a number set to even out a mismatched game so that both the favorite and the underdog are, in theory, equally attractive bets. The favorite is listed with a minus sign (e.g., −6.5), and the underdog with a plus sign (e.g., +6.5).

• If you bet the favorite, they must win by more than the spread.
• If you bet the underdog, they can lose by less than the spread, tie, or win outright.

The spread number itself is set separately for each game. On standard football and basketball spreads, the price you pay to bet either side is usually close to −110 (baseball and hockey work differently — more on that below). This guide covers both parts: how the line decides who covers, and how the price decides what a win pays.

For a broader look at how odds formats work across all bet types, see our guide on how betting odds work.

Reading the -110 Price

Most spread bets use “standard juice,” written as −110 on both sides. Here’s what that single price looks like across the three main odds formats:

Format	Value
American	−110
Decimal	1.91
Fractional	10/11
Implied probability	52.38%

The implied probability column is the key one. It tells you that a −110 price assumes roughly a 52.38% chance of winning. Since a true coin-flip bet would be priced at 50.00%, the gap between 52.38% and 50.00% is built-in margin for the operator — more on that below.

Worked Example

Say you bet $110 on a team to cover a point spread, at the standard −110 price.

• Risk: $110
• Profit if it wins: $100.00
• Total payout if it wins: $210.00

Now say you bet a smaller, more typical amount — $100 — at that same −110 price:

• Risk: $100
• Profit if it wins: $90.91
• Total payout if it wins: $190.91

Notice the profit isn’t a clean $100 when you only risk $100. That’s because −110 isn’t even money; you’re laying slightly more than you stand to win. This is the core math every spread bettor should internalize before placing a bet.

You can check these payouts instantly, and test other stake sizes or odds, with our odds and payout calculators.

Spread Betting Examples: Who Covers?

Take a game listed as Team A −6.5 and Team B +6.5. Here is how three possible final scores settle each side:

Final score	Team A wins by	Team A −6.5	Team B +6.5
Team A 27, Team B 20	7	Wins (covers)	Loses
Team A 24, Team B 20	4	Loses	Wins
Team A 17, Team B 20	Team B wins	Loses	Wins

The half point is there on purpose: with −6.5 the margin can never land exactly on the line, so there is no push. Change the line to −7 and a 7-point win becomes a push — both sides get their stakes back. Moving the line by that half point (the “hook”) also changes which margins win: at −6.5 a 7-point win covers, at −7 it only pushes, and at −7.5 it loses. That is why a half point can matter so much.

Reading the signs is the same everywhere: the minus number is the favorite and the points it must win by; the plus number is the underdog and the points it can lose by. A line of +3 means the underdog covers if it loses by 1 or 2, ties or wins outright, and pushes if it loses by exactly 3 (how overtime counts depends on the market’s rules).

Spreads in different sports

• American football (NFL and college): the classic point spread. Lines move in half points, and games often finish with margins of 3 or 7, which is why a move from −2.5 to −3.5 matters more than it looks.
• Basketball: the same idea with bigger numbers; double-digit spreads such as −10.5 are routine.
• Baseball (run line) and hockey (puck line): usually a fixed spread of −1.5 / +1.5, with the price moving instead of the line. Because the line is fixed, these are often priced well away from −110.
• Soccer: the closest equivalent is the handicap market, including Asian handicaps that can split a stake across two lines.

When the Price Isn’t −110

The line can stay put while the price moves. A spread at −105 is cheaper to bet than one at −120, even if the points are identical. Here is the profit on a winning $100 bet at common spread prices, and the win rate each one needs to break even:

Price	Decimal (rounded)	Profit on $100	Break-even win rate	Margin if both sides are priced this way
−105	1.95	$95.24	51.22%	2.44%
−110	1.91	$90.91	52.38%	4.76%
−115	1.87	$86.96	53.49%	6.98%
−120	1.83	$83.33	54.55%	9.09%

A few cents of juice looks small on one bet, but the break-even line moves with it. That is why comparing the price on the same spread is one of the few things a bettor can control.

Sports Spreads vs. Financial Spread Betting

If you are searching from the UK or Ireland, “spread betting” can mean something else entirely: a financial (or sports index) product where you choose an amount per point and “buy” or “sell” a quoted number. Your profit or loss is that amount multiplied by how far the price — or, in sports index betting, the final result — moves from where you opened, in your direction or against it. Losses can exceed the money you first put down. Everything on this page is about the point spread used in North American sports betting, where the most you can lose is your stake.

Why Spreads Are Priced -110/-110

When both sides of a spread bet are priced at −110, each side carries an implied probability of 52.38%. Add the two sides together and you get 104.76% — not 100%. That 104.76% total is the overround; the 4.76% above 100% is the margin. It is not the operator’s actual retained profit, which depends on how the money comes in.

Market	Overround	Margin
−110 / −110	104.76%	4.76%

In practical terms, this means that even if a spread is set perfectly — truly a 50/50 proposition — you still need to win more than half your bets just to break even, because the price itself isn’t fair odds. Specifically, you need to win at a rate of 52.38% at −110 just to avoid losing money over time. Anything below that, and you lose ground even if your picks are “right” about as often as they’re wrong.

For a deeper breakdown of this concept, see our guide on what is vig in betting.

Spread Bets vs. Other Bet Types

Spread bets are just one way to bet on a game’s outcome. A few related concepts worth knowing:

• Moneyline bets skip the point spread entirely and just ask who wins — see moneyline betting.
• Over/under (totals) bets wager on combined scoring rather than margin of victory — see over/under betting.
• Each-way bets, common in racing, split a stake across two outcomes — see each-way betting explained.
• Parlays and accumulators combine multiple bets, including spread bets, into one ticket with multiplied odds — see what is a parlay and what is an accumulator bet.
• Round robins let you combine several spread picks into multiple smaller parlays — see round robin bet.
• If the final margin lands exactly on the spread number, the bet is a push and stakes are returned — see what is a push in betting.

Common Mistakes

Assuming -110 is close to even money. It isn’t. At −110, a $100 bet only profits $90.91, not $100, and you need to win 52.38% of the time just to break even.

Ignoring the push scenario. If a spread is a whole number (like −7) and the final margin lands exactly there, the bet pushes and your stake is simply returned — no profit, no loss.

Confusing the spread number with the price. The spread (e.g., −6.5) changes game to game, but the price to bet either side is usually close to −110 regardless. Don’t assume a bigger spread number means better or worse odds — check the actual price.

Not comparing the implied probability to your own view. If the bet cannot push or pushes are excluded, a cover probability below 52.38% is losing at −110. For spreads that can push, the threshold among settled win/loss bets is still 52.38%; only the share of all bets you need to win is lower, because pushes are refunded.

Final Word

A spread bet is a wager on margin of victory, priced in a way — typically −110 — that bakes in a small but real edge for the operator. Understanding the implied probability behind that price, worked out here as 52.38%, is the single most useful thing a spread bettor can know before placing money on a line. Always bet within your means, and remember that sports betting should stay entertainment, not an investment strategy. Gamble responsibly, 21+ (18+ where applicable).