What Is a Parlay Bet? A Simple Guide for Beginners

Parlay betting has become one of the most popular formats in sportsbook betting. Whether you are scrolling through sports betting apps or watching a friend celebrate a big win, parlay bets seem to be everywhere. This parlay betting guide breaks down exactly what a parlay bet is, how the odds work, and what you need to know before you place parlay bets for the first time.

The appeal is straightforward: combining multiple bets into one ticket can turn a small stake into a life-changing payout. The risk, however, is just as real. Read on for a clear, jargon-free breakdown.

Parlay Bets Explained

A parlay bet is a single wager that links together two or more individual wagers into one ticket. Each selection in the parlay is called a leg, and all legs must win for the parlay to pay out. If any one leg loses, the entire bet is lost. That is the core of what a parlay bet is in sports betting.

The term ‘parlay’ comes from the concept of rolling winnings forward, using one result to fund the next. Today it refers to any bet that combines multiple outcomes under one wager, with the payout growing in line with the combined odds of every leg.

This all-or-nothing structure is what separates parlay betting from straight bets. In exchange for the added risk, a winning parlay offers much higher payouts than placing the same individual bets separately.

How Does a Parlay Bet Work?

When you build a parlay bet, each leg is linked together on your bet slip. The process is simple: select your individual bets on a sportsbook betting platform or sports betting apps, add them to the same bet slip, and the sportsbook will automatically generate the combined parlay odds.

The odds from each leg are multiplied together, which is why the potential payout rises sharply with each additional leg. A parlay bet with five legs at the same odds pays far more than a two-team parlay, but it is also far harder to win.

The key mechanic to remember: every single leg must win. A parlay with four legs that wins three of them still loses in full. There are no partial payouts on a standard parlay, which is what makes combining multiple bets riskier than placing individual wagers separately.

You can include a wide range of market types in a parlay: point spreads, money lines, over/under totals, and player props. You can also combine bets across multiple sports on one ticket, for example, an NFL point spread and an NBA money line on the same bet slip.

A Simple Parlay Bet Example

Here is a real-world example to show how parlay bets work in practice.

Suppose you want to build a three-leg parlay on NFL Sunday. You pick the Kansas City Chiefs to cover the spread at -110, a game total over at -110, and a player props bet at -110. To calculate parlay payouts, each leg is first converted from American odds to decimal odds.

At -110, the decimal odds are 1.909. Multiply all three legs together: 1.909 x 1.909 x 1.909 = approximately 6.95. That converts to roughly +595 in American odds. A $100 bet on this three-leg parlay would return close to $595 profit if all three bets win.

Compare that to placing three straight bets at -110 individually: you would earn roughly $90 profit in total across all three. The parlay payout is dramatically higher, which is the central attraction for parlay bettors.

One of the biggest winning parlays on record involved a bettor on FanDuel Sportsbook who correctly picked the 2024 champions in the NBA, NHL, MLB, and NFL in a single futures parlay. A $5 wager at +171260 odds returned $8,568, highlighting just how explosive a winning parlay can be. That said, wins like this are extremely rare.

What Happens If One Leg Loses?

If any single leg of a parlay loses, the entire bet loses immediately. There is no consolation prize for getting the other legs right. This is the fundamental risk of parlay betting, and it is the reason why the entire bet loses even when a bettor is correct on most of their selections.

A push is the one partial exception. A push occurs when a leg lands exactly on the spread or total. In that case, the pushed leg is removed from the parlay and the rest of the bet carries on. A four-leg parlay with one push becomes a three-leg parlay with adjusted parlay odds.

There is one important caveat for same-game parlay bets: some sportsbooks will void the entire parlay when a leg pushes, rather than removing it. Always check the rules of your sportsbook before placing game parlays.

Parlay Bet Odds and Payouts

Parlay odds are higher than those on a single bet because you are taking on more cumulative risk. The more legs you add, the larger the potential payout becomes, but so does the difficulty of winning. As a rough guide, the odds roughly double with each additional leg priced at -110, though this is not exact.

This scaling is the reason parlay bets attract casual bettors chasing big returns. However, it also means the expected value of a parlay is generally lower than that of equivalent straight bets placed individually.

How Parlay Payouts Are Calculated

The standard method to calculate parlay payouts uses decimal odds. Convert each leg from American odds to decimal odds, then multiply all of the decimal odds together to get the combined multiplier.

American odds to decimal odds formula:

•       Positive odds (e.g., +150): (odds / 100) + 1 = (150 / 100) + 1 = 2.50
•       Negative odds (e.g. -110): (100 / absolute value of odds) + 1 = (100 / 110) + 1 = 1.909

For a two-team parlay at -110 on both legs: 1.909 x 1.909 = 3.647. Subtract 1 for the profit multiplier, and you get approximately +265. A $100 bet returns $265 profit.

How much does a $100 four-team parlay pay? For four legs at -110: 1.909 to the power of four equals approximately 13.3. That means a $100 bet returns around $1,230 in profit. Sportsbooks typically pay around +1200 on a four-leg parlay at -110, slightly below true odds due to the house edge.

2-Leg vs. 5-Leg Parlay Payout Comparison

The table below shows how parlay odds and the house edge scale with each additional leg, with all legs priced at -110. The payout compared to true probability gets less favorable the more legs you add.

Legs

True Odds

Sportsbook Odds

House Edge

2

+300

+260

~10%

3

+700

+600

~12.5%

4

+1500

+1200

18.75%

5

+3100

+2400

21.88%

A two-team parlay has the most favorable terms for bettors. Once you move to a three-team parlay or beyond, the house edge grows significantly with each leg added. Same game parlay bets carry an even higher house edge, as sportsbooks add an extra 10% to 20% to the adjusted odds to account for correlated legs.

Types of Parlay Bets

There are several types of parlays available at most sportsbooks. Understanding the different types of parlays helps you choose the right format for your situation. The most common formats are same game parlays, round robin parlays, and teaser parlays.

Same-Game Parlay (SGP)

A same game parlay, also called an SGP, is a parlay in which every leg comes from a single game. Same game parlay bets allow you to combine point spreads, totals, and player props from one match onto the same bet slip. For example, you could build a same game parlay using the Kansas City Chiefs to win, a quarterback to throw for over 280 yards, and a receiver to score a touchdown.

Game parlays are now standard across all major sportsbooks. Game parlays SGPs are heavily promoted through odds boosts and profit boost tokens, which is part of why they have grown so quickly in popularity. You can also bet SGP+ or SGPx parlays, which combine a same game parlay from one game with a bet or same game from a second game onto one ticket.

The trade-off is that the same game parlays carry a higher house edge than a traditional parlay. Because the legs are correlated, sportsbooks price in additional margin to the parlay odds. What might be true odds of +400 on a correlated parlay could be offered at only +300, a 20% house edge.

Correlated parlays are picks where one outcome makes another more likely. For instance, a quarterback throwing for lots of yards is correlated with his receivers also hitting their yardage totals. Sportsbooks either restrict correlated bets in the same game parlay markets or apply reduced adjusted odds.

Round Robin Parlay

A round robin parlay lets you combine multiple parlays onto one ticket for efficiency. Round robin bets group multiple two and three-leg parlay combinations from a set of picks into a single bet slip. Rather than placing each parlay separately, the round robin handles them all at once.

For example, if you like three NFL teams against the spread, a round robin parlay would generate four individual parlay bets: three two-team combinations and one three-team combination. If one team loses, you could still win the two-team parlays that do not include it.

Round robin parlays reduce the all-or-nothing exposure of a standard parlay while still delivering solid parlay payout potential. They are a good option for bettors who want multiple smaller parlays from one set of picks without carrying around multiple individual tickets.

Teaser Parlay

Teaser parlays are a variation on the standard parlay that lets you move the point spreads or totals in your favor across multiple legs. In exchange for the improved lines, teaser bets deliver reduced parlay odds compared to a traditional parlay at the same leg count.

For example, a standard six-point NFL teaser might move a -3.5 favorite to -9.5 on a ten-point teaser. That gives you more cushion to win the leg, but the entire parlay odds are pushed down as a result. Teaser parlays must include at least two selections and are most commonly used in NFL and NBA betting.

Pros and Cons of Parlay Betting

Parlay betting has genuine appeal, but it is important to understand the trade-offs. Here is a balanced overview.

Pros:

•       High potential payouts from a small single wager
•       Exciting way to combine multiple sports bets into one ticket
•       Same game parlay options let you leverage strong knowledge of one match
•       Sports betting companies frequently offer bonus bet promotions and profit boosts on parlay markets
•       Round robin parlays provide some protection against one leg losing

Cons:

•       If any leg loses, the entire parlay is lost with no partial payout
•       The house edge compounds with each added leg, reducing expected value over time
•       Winning parlay bets require every selection to be correct, making long-term profitability very difficult
•       Correlated parlays and same game parlays carry some of the highest house edges at any sportsbook
•       Sportsbooks earn a higher profit margin on parlay bets than on individual bets

Are parlays a good bet? For casual bettors who enjoy the thrill of a potentially big return on a small stake, parlays can be an entertaining format. For those focused on positive expected value over the long run, placing individual bets as straight bets is generally more profitable. The probability of winning decreases sharply with each extra leg, and the expected value of most parlays is negative.

Parlay Betting Tips for Beginners

A sound parlay betting strategy starts with discipline. These tips will help you approach parlay bets more sensibly, and you can always review responsible gambling tips if you want broader guidance on managing your betting activity.

1.     Keep the leg count low. A two-team parlay has the best ratio of payout to house edge. Sticking to two legs gives you the most favorable terms of any multi-leg parlay.
2.     Stick to markets you understand. Combining multiple sports bets on leagues or events you are unfamiliar with adds unnecessary risk.
3.     Use a parlay calculator before placing. Knowing the exact parlay odds and implied probability before you confirm the bet slip helps you make more informed decisions.
4.     Manage your bankroll carefully. Treat your parlay bets as a small portion of your total betting budget, not your primary betting strategy.
5.     Be cautious with the same game parlays at high leg counts. Game parlays with five or more legs from a single match carry extremely high house edges and should be approached as entertainment rather than a serious parlay betting strategy.
6.     Look for a bonus bet or promotional offer before placing your first parlay. Many platforms offer matched deposits or free parlay tokens for new accounts.

Place Parlay Bets on BiggerZ

Ready to try parlay betting for yourself? You can place parlay bets directly on BiggerZ across 40+ sports, including NFL, NBA, soccer, tennis, and more. The BiggerZ sportsbook offers competitive parlay odds on every major market, with same-game parlay options, standard parlay tickets, and round robin parlays all available in a few taps.

BiggerZ also features live sports betting, so you can add in-play legs to your bet slip as a game unfolds. Deposits are supported in both crypto and fiat currencies for fast, fee-free transactions.

New players can claim a welcome bonus for new players to get started with extra value on their first parlay bets. Whether you are building your first two-leg parlay or exploring more advanced formats, BiggerZ gives you everything you need in one place. Head to the BiggerZ sportsbook betting section and start building your parlay today.