What a point spread actually is

A point spread is the sportsbook’s way of turning a lopsided game into a roughly 50/50 betting proposition. Instead of just picking a winner, you bet on the margin of victory. The favourite is handicapped by a number of points, and the underdog is given those points as a head start.

You will see it written like this:

  • Kansas City Chiefs -7 (-110)
  • Las Vegas Raiders +7 (-110)

The Chiefs are 7-point favourites. To cover the spread, they must win by 8 or more. The Raiders are 7-point underdogs — they cover if they win outright, or lose by 6 or fewer. If the Chiefs win by exactly 7, it is a push and everyone gets their stake back.

A worked example

Say you bet $110 on the Chiefs -7 at -110. Three things can happen:

  • Chiefs win by 8+ — you win $100 profit (returned $210 total).
  • Chiefs win by exactly 7 — push, your $110 is refunded.
  • Chiefs win by 6 or fewer, or lose — you lose your $110.

Bet the Raiders +7 instead and the outcomes flip. The half-point matters enormously here, which is why you will often see spreads like -6.5 or -7.5 to remove the push entirely.

The -110 tax you can’t ignore

Notice both sides are priced at -110, not even money. That is the vig (also called juice). Risking $110 to win $100 means you need to hit 52.38% of your spreads just to break even, not 50%. If you want to see the exact break-even percentage for any price, run the numbers through our odds converter tool, and check the built-in margin using the margin calculator.

That 2.38% edge is small per bet but relentless over a season. It is the single biggest reason casual bettors slowly lose — not bad luck, but paying the tax on every ticket.

Why the half-point is worth shopping for

Because so many US games are decided by field-goal-sized margins, moving a spread from -7 to -6.5 changes real outcomes. In the NFL, 7 and 3 are the most common margins of victory, so a half-point around those “key numbers” is disproportionately valuable.

This is where line shopping pays off. One book may hang Chiefs -7 while another offers -6.5. Over a season, consistently taking the better number is one of the few genuine edges available to a recreational bettor. Our reviews flag which sportsbooks routinely post sharper spreads, and the best betting sites shortlist prioritises low-margin books.

Alternate spreads and buying points

Most books let you move the spread yourself. Take the Chiefs from -7 down to -3 and they only need to win by 4 — but the price gets worse (say -180 instead of -110). Push the Raiders from +7 up to +10 and you pay a premium for the extra cushion. These are alternate spreads. They are neither good nor bad by default; they simply reprice the same event, and the book bakes its margin into every version.

“Buying points” is the same idea in miniature — paying a slightly worse price to nudge the spread half a point in your favour, usually to get onto or off a key number.

Where point spreads fit in US sports

Spreads dominate the two biggest US markets: the NFL and NBA. In lower-scoring sports the concept is repackaged — baseball uses a fixed 1.5-run line and hockey a 1.5-goal line — but the logic is identical: you are betting the margin, not just the winner.

Bet the number, not the hype

Point spreads reward patience and discipline over gut feeling. Understand that you are paying vig on every bet, shop for the best half-point, and never chase a losing day by piling into more spreads. The maths does not care how confident you feel.

Set a budget before you start and treat it as the cost of entertainment, not an investment. If betting stops being fun, the tools to pause or stop are always there.

18+. Gambling involves real financial risk. If it stops being fun, take a break — play responsibly.