Parlay Betting Guide: How Parlays Work and When to Use Them
Last Updated: March 2026 | 6 min read
---
Parlays are the most popular bet in sports betting — and the most profitable for sportsbooks. Understanding exactly how they work will help you use them smarter (or avoid them entirely, depending on your goals).
---
What Is a Parlay?
A parlay combines two or more individual bets into a single wager. All selections must win for the parlay to pay out. If any leg loses, the entire parlay loses.
The appeal: the payout grows exponentially with each added leg.
Example — 3-team parlay:
A $100 parlay on these three -110 selections returns roughly $596 — nearly 6x your money.
**The same $100 split into three $33 single bets:** If all three win, you profit about $90.
The difference is real. Parlays pay bigger. The math of why that difference exists is where the conversation gets interesting.
---
Parlay Payouts: The Math Behind the Magic
For a parlay at standard -110 juice, the true odds are:
| Legs | True Odds | Typical Book Payout | House Edge |
| 2 | 3.64:1 | 2.6:1 | ~10% |
|---|---|---|---|
| 3 | 7.44:1 | 6:1 | ~20% |
| 4 | 15.2:1 | 11:1 | ~28% |
| 5 | 31:1 | 22:1 | ~29% |
| 6 | 63:1 | 45:1 | ~29% |
The house edge on a 3-team parlay is roughly 4-5x higher than on a single game. That's why sportsbooks love parlay bettors, and why sharp bettors treat them with caution.
---
Calculating Parlay Odds Yourself
To calculate true parlay odds, convert each leg to decimal odds and multiply.
Example:
True parlay odds = 1.909 × 1.909 × 1.909 = **6.96**
A $100 bet returns $696 at true odds. The book typically pays $596-$600. The difference is the book's parlay margin.
Formula to convert American odds to decimal:
---
Types of Parlays
Standard Parlay
The classic — pick 2-12 teams, all must win. Most books max out at 10-12 legs.
Same-Game Parlay (SGP)
All selections come from the same game. DraftKings and FanDuel pioneered this format. Example: Patrick Mahomes over 280 yards + Chiefs -7 + Travis Kelce over 75 receiving yards.
SGPs are popular because the legs feel connected — but correlations between your selections are factored into the odds. Books price SGPs with additional margin compared to a standard parlay.
Teaser
A teaser adjusts the spread in your favor in exchange for a lower payout. Most common: a 6-point NFL teaser.
**Example:** Chiefs -7 becomes Chiefs -1 in a 6-point teaser. You're getting 6 points of cushion on each leg.
**Standard 2-team 6-point teaser pays:** -120 (risk $120 to win $100)
Teasers can have positive expected value in specific NFL scenarios — particularly teasing through key numbers (3, 7) in low-scoring games. This is one of the few parlay-adjacent bets that professional bettors use.
Round Robin
A round robin creates all possible parlays from a set of selections. If you pick 4 teams for a round robin of 3-leg parlays, you're creating four separate 3-team parlays covering every combination.
Round robins reduce variance — you don't need all picks to win, just enough combinations to profit.
---
When Parlays Make Sense
**For recreational bettors:** Parlays are entertainment. If you're betting $20 on Sunday NFL games for fun, putting $10 on a 4-team parlay for a shot at $100 is perfectly reasonable. Know you're paying extra for the excitement.
**For bettors who've found an edge:** If you genuinely have a winning angle — say you're 58% on spread bets long-term — parlaying your strongest plays captures more value from your edge than single bets alone. This is theoretically sound but requires a verified edge first.
**Same-game parlays with natural correlation:** Some SGP legs are naturally correlated in ways books don't fully account for. A quarterback throwing for a lot of yards is correlated with his team going over the total. Positive-correlation SGPs can have better expected value than negative-correlation ones.
---
When to Avoid Parlays
**Never parlay to recover losses.** A $50 4-team parlay after a losing day is not a recovery strategy — it's accelerating your losses. The expected value is negative regardless of your mood.
**Don't build 8+ leg parlays seriously.** At 8 legs, you need a roughly 87% win rate to break even (if each leg is -110). The payout looks massive. The probability of hitting is small. This is pure entertainment.
**Avoid when your edge is thin.** If you win 53% of single-game bets (just above break-even), parlaying multiple games turns a slight edge into negative expected value because the parlay margin is so much larger than the single-game margin.
---
Same-Game Parlays: The Detailed Breakdown
DraftKings and FanDuel have made SGPs the fastest-growing bet type in the US market. Here's what you need to know:
**Why they're popular:** One game, one decision, outsized payout. Easy to understand and exciting to watch.
**Why they're often overpriced:** Books have gotten extremely sophisticated at pricing correlations. When you pick "Chiefs win + Mahomes over 300 yards," the book knows those are positively correlated and factors that into the odds — you get less than you'd expect from a standard parlay of the same odds.
**The exception — negative correlation plays:** If you think the game will be defensive, you might parlay "Under 42.5 total" + "both QBs under 200 yards." These are negatively correlated in standard situations, meaning the book may not fully discount the parlay — giving you a small edge.
**Profit boosts on SGPs:** DraftKings and FanDuel frequently offer 25-100% profit boosts on same-game parlays. Always check for available boosts before building an SGP — the boost can meaningfully improve expected value.
---
Parlay Strategy: The Practical Version
If you bet recreationally:
If you take betting seriously:
**The honest truth:** Most professional bettors avoid parlays except in very specific situations. The math doesn't favor them. But they're fun, they create action, and a $50 parlay that hits $600 is a story you'll tell for a while.
---
Frequently Asked Questions
What happens if one leg of my parlay is a push?
A push (tie) removes that leg from the parlay. A 3-team parlay becomes a 2-team parlay, which pays at lower odds.
Can I cash out a parlay early?
Most major sportsbooks offer early cash out on live parlays. The amount offered is typically less than the true expected value — but it guarantees a profit if you're ahead.
What's the maximum parlay payout?
Most books cap payouts at $1 million or less. DraftKings caps at $2 million on SGPs. FanDuel varies by sport and event.
Are same-game parlays better or worse than regular parlays?
Generally slightly worse expected value due to correlation pricing. But the profit boosts that books offer on SGPs can flip this — always check for available boosts.
What's a round robin parlay?
A round robin creates all possible parlays within a set of selections, reducing variance. You don't need all picks to win — just enough combinations.