How Does Line Betting Work?

A line bet puts a points start on the underdog and a points deficit on the favourite. Here's how line betting works in AFL, NRL, NBA and NFL, and how Sportsbet settles every result.

A lopsided match makes for a dull head-to-head market. Back the favourite and the return barely moves the needle. Back the outsider and you need an upset.

Line betting fixes that. Instead of asking who wins, it asks who wins once the bookie has handed one side a head start, and that turns a one-sided game into a genuine coin flip on the margin.

What Is a Line Bet?

A line bet is a wager on a team to win after a points handicap is applied to the final score. The favourite gets a minus line (for example, -6.5) and must win by more than that number.

The underdog gets a plus line (+6.5) and wins your bet if it loses by less than that number or wins outright.

What Does Line Mean in Sports Betting?

"The line" is the number of points the bookie expects the favourite to win by. Sportsbet sets that number so that both sides attract a similar amount of support, which is why the two teams on a line market usually carry similar prices, even when the head-to-head prices are miles apart.

The same market goes by a few names. In Australia it's usually called line betting or the handicap. In the US it's the point spread, or simply the spread, so "betting against the spread" in an NFL podcast means exactly what an Aussie punter means by taking the line.

The sign in front of the number tells you which side you're on:

• Minus (-): the favourite. Points are taken off its final score.
• Plus (+): the underdog. Points are added to its final score.

How Does Line Betting Work?

Settling a line bet takes ten seconds. Take your team's final score, add or subtract the line, then compare it with the opposition's actual score. If your team is ahead after the adjustment, the bet wins.

Say the Brisbane Broncos are listed at -10.5 against the Wests Tigers at +10.5, and the Broncos win by 12.

• Broncos -10.5: a 12-point win minus 10.5 leaves them 1.5 points clear. Winner.
• Tigers +10.5: losing by 12 with 10.5 added still leaves them 1.5 short. Loser.

Flip it: if the Broncos win by 8, the Tigers bet wins, because an 8-point loss plus a 10.5-point start puts them ahead on the line.

A quicker way to think about it: the favourite needs to win by more than the line, and the underdog needs to lose by less than the line (or win).

Half-Point Lines and Why They Avoid Pushes

Most lines you'll see end in .5. That's deliberate. No team can win by half a point, so a half-point line guarantees one side wins and the other loses. There's no tie on the line and no refund.

That half point matters more than it looks. In sports where certain margins come up again and again (three and seven points in the NFL, a converted try's six points in the NRL), the difference between -6.5 and -7.5 decides a lot of bets.

Whole-Number Lines: What Happens When the Margin Lands on the Line

Whole-number lines do pop up, most often in NFL and soccer handicaps, and in alternative line markets. They create a third possible result: the push.

Here's the correct settlement on a line of exactly 5. If the favourite is -5 and wins by exactly 5, neither side has won on the line. The favourite hasn't won by more than 5, and the underdog hasn't lost by less than 5. 

Under Sportsbet's rules, that bet is a push: it's treated as void and your stake is refunded.

• Win by 6 or more: favourite -5 wins.
• Lose by 4 or less, or win outright: underdog +5 wins.
• Margin of exactly 5: push, stakes refunded on both sides.

There's one exception. If Sportsbet offers a handicap draw price in that market, the push rule doesn't apply. A result that lands exactly on the line makes the handicap draw the winner, and bets on either team lose. 

You'll mostly see this in soccer and alternative handicap markets, so check whether a draw selection sits between the two teams before you lock anything in.

Line Betting by Sport

Line betting works the same way everywhere, but each sport's scoring changes how lines behave. The examples below use made-up lines to show the margin maths only.

AFL Line Betting

AFL lines tend to be big because scoring comes in goals of six points. A line in the 20s or 30s isn't unusual when a top-four side hosts a bottom-four team.

Example: Collingwood -18.5, Essendon +18.5. Collingwood win by 25 and the minus side covers. Collingwood win by 15 and Essendon +18.5 gets home despite losing by more than two goals.

AFL home and away matches are settled at the end of normal time under Sportsbet's rules, as there's no extra time in the regular season. A draw is a margin of zero, so on any line the plus side wins. Our AFL tips and previews cover every round.

NRL Line Betting

When punters search what line means in NRL betting, the answer is the same handicap, just with rugby league scoring. A converted try is worth six points, so lines around 6.5 and 12.5 (one and two converted tries) attract a lot of attention.

Example: Melbourne Storm -8.5, St George Illawarra Dragons +8.5. The Storm win by 6 after a late converted try, and the Dragons cover. Had the Storm kicked a field goal on top for a 7-point win, the Dragons would still cover. It takes a 9-point margin for the Storm backers to collect.

Our NRL tips and news cover each round, and you'll find the current NRL markets on Sportsbet.

NBA Line Betting

Basketball is built for line betting because both teams score so often that margins spread out evenly. NBA lines usually sit somewhere between a couple of points and the mid-teens.

Example: Boston Celtics -6.5, Miami Heat +6.5. The Celtics win by 7 and cover; win by 6 and the Heat cover. Overtime counts towards the final score under Sportsbet's basketball rules, which can swing a line late.

NBA lines are also notorious for garbage time. A team up 20 can empty its bench in the fourth quarter and watch the lead shrink to single digits. Our guides to NBA handicap betting and the NBA handicap betting guide go deeper, and how to bet on the NBA covers the wider market list. 

For the latest NBA odds and markets, check out our dedicated NBA odds page here at Sportsbet.

NFL Line Betting

The NFL is where whole-number lines turn up most, and where key numbers matter most. Plenty of games are decided by a field goal (three points) or a converted touchdown (seven), so lines of 3 and 7 carry real weight.

Example: Kansas City Chiefs -3, Denver Broncos +3. A Chiefs win by 4 or more covers the minus side. A Broncos loss by 1 or 2, or a Broncos win, covers the plus side. A Chiefs win by exactly 3 is a push. Overtime counts for NFL handicap settlement at Sportsbet. You'll find the full slate on Sportsbet's NFL odds page .

Line vs Head to Head vs Margin Betting

These three markets all ask a version of "who wins?", but they pay out on very different things.

• Head to head (H2H): you only need your team to win. The favourite pays less and the outsider pays more, so lopsided games produce lopsided prices.
• Line: you need your team to win once the handicap is applied. Both sides usually carry similar prices, so the market is about the margin, not just the result.
• Margin (Big Win Little Win): you pick the winner and a margin band. At Sportsbet, AFL bands are usually 1 to 39 and 40 or more, rugby league and union bands are 1 to 12 and 13 or more, and basketball bands are 1 to 10 and 11 or more, with a draw option in the football codes.

The practical difference shows up on the underdog. A punter who likes the outsider to keep it close but not win can't get paid on H2H. On the line, that's exactly the bet.

Pick Your Own Line and Alternate Lines

Pick Your Own Line means choosing a different handicap from the main line, with the price adjusting to match. It's the answer to anyone searching what "pick your own line" means: you set the margin you're comfortable with, and the bookie sets the price for it.

Here's how it works in practice. Say the main line is Penrith -12.5.

• Take a smaller handicap, such as Penrith -4.5, and the bet is more likely to win, so it pays less.
• Take a bigger handicap, such as Penrith -24.5, and the bet is less likely to win, so it pays more.
• Give the underdog a bigger start, such as +24.5, and the price shortens because they only need to stay within four converted tries.

At Sportsbet, these extra handicaps sit in alternative line or alternative handicap markets on many matches, alongside the main line. Some alternative markets also include a handicap draw selection, which changes how a whole-number result is settled (see the push rules above).

Alternate lines let punters build a bet around a specific game script. A heavy favourite you expect to win big pays more on a larger minus line; an outsider you expect to keep it tight gets more cushion on a big plus line, at a shorter price.

Why Lines Move

The line you see on Monday isn't always the line you see at kick-off. Three things usually move it.

Team news. Injuries and late outs are the biggest driver. If a team listed at -5.5 loses its star playmaker or its best key forward, that line might drift to -3.5 or flip altogether. The reverse happens when a big name is named to return.

Weather. Rain, wind and heat change how games are played. Wet conditions in the AFL and NRL tend to mean lower scores and more errors, which makes big margins harder to build. Lines on heavy favourites often tighten when the forecast turns.

Weight of money. If punters pile onto one side, Sportsbet may adjust the number to balance its book. A line that moves without any obvious team news is often reacting to betting volume.

Your bet is settled on the line you took, not where the market finishes. Getting on early can lock in a better number, and waiting for team lists can protect you from a late out. Both approaches have their place.

Line Bets in Multis and Same Game Multis

Line bets can be combined with other selections in a multi. Each leg needs to win for the multi to pay, and because line legs carry similar prices on both sides, they add up quickly. If multis are new to you, start with our explainer on what a multi bet is .

Two Sportsbet rules matter here:

• Standard multi: if a whole-number line lands on the number, that leg is void and the multi is recalculated on the remaining legs.
• Same Game Multi (SGM): if any leg is voided, the whole SGM is cancelled and the stake refunded.

Correlation is the other thing to think about. Pairing a team's minus line with a high-scoring player prop from the same team makes sense, because both need the team to dominate. Pairing that same line with the opponent's top scorer to have a big night pulls in opposite directions.

How to Pick a Line Bet

H2H punters ask who wins. Line punters ask by how much, so check these before taking a number:

• Recent margins, not just results. A team that keeps winning by a goal is a different proposition from one winning by ten.
• Selections and late outs. A line set before team lists can be out of date by the time they drop.
• Motivation and rotation. Teams resting players late in a season, or protecting a big lead, rarely run up the score.
• Venue and travel. Home-ground advantage and long trips shift margins, not just results.

Our expert tips for AFL, NRL and the NBA regularly cover line angles alongside H2H picks.

Line Betting FAQs

What does pick your own line mean?

It means choosing your own handicap instead of the main line. A smaller handicap on the favourite (or a bigger start for the underdog) is more likely to win and pays less. A bigger handicap on the favourite pays more but needs a bigger winning margin.

What does +7.5 mean in betting?

The team at +7.5 has seven and a half points added to its final score. Your bet wins if that team loses by 7 or fewer, or wins outright. If it loses by 8 or more, the bet loses.

What does line mean in NRL betting?

It's the points handicap on an NRL match. The favourite must win by more than the line and the underdog must lose by less than the line, or win. Many NRL lines sit near multiples of six, the value of a converted try.

What happens if the margin lands exactly on the line?

On a whole-number line with no handicap draw price, Sportsbet treats it as a push: stakes on singles are refunded, standard multis are recalculated without that leg, and SGMs are cancelled and refunded. If a handicap draw price is offered, the handicap draw wins instead.

Is line betting the same as spread betting?

Yes. Line betting is the Australian name for what Americans call the point spread. Line, handicap and spread all describe the same market.

Does line betting include overtime or extra time?

It depends on the sport. At Sportsbet, NBA and NFL line bets include overtime. AFL home and away matches are settled at the end of normal time, as no extra time is played. Check the market rules for finals and other competitions.

Can I bet on the line during a game?

Handicap markets are available live, but under Australian law, live bets on sport can't be placed online. Sportsbet takes live sport bets over the phone instead.