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A parlay bet is a single wager that chains two or more individual picks — called legs — into one ticket; every leg must win or the entire bet loses. The trade-off is straightforward: higher risk in exchange for a payout that multiplies well beyond what each pick would return on its own.
What exactly is a parlay in betting?
Start with the parlay betting basics and you'll see the structure is simple. Pick two games, add both to the same ticket, and the sportsbook treats them as a combined wager. A $100 bet on two legs priced at −110 each returns roughly $264 in profit — around $364 total — if both hit. Place those bets separately and you'd collect far less, because the winnings from leg one aren't automatically rolled into leg two the way a parlay does it automatically.
Most licensed US sportsbooks let you add anywhere from 2 to 25 legs on a single parlay ticket. You can mix bet types across the same ticket — a point spread from Sunday's NFL game alongside a moneyline from an NBA tip-off that evening. To understand exactly what counts as a leg and which bet types are allowed, see what parlay legs are and how spreads, moneylines, and totals work together.
How does a parlay payout get calculated?
The math multiplies decimal odds across every leg. Convert −110 to decimal and you get 1.909; multiply two of those together and you land near 3.65 decimal, which translates to roughly +265 in American odds. That's how a modest two-legger already triples your stake. The full walkthrough lives in the guide on how to calculate parlay odds using decimal multiplication.
One thing worth knowing before you fall in love with the payout numbers: the sportsbook's built-in margin (the vig) compounds with each leg you add. A 2-leg parlay at −110 per leg carries roughly a 5% house edge; climb to five legs and that edge can exceed 25%. You're not getting mathematically correct odds — a 5-leg parlay should pay 31:1 at true probability but typically pays around 24:1. For a deep look at those numbers, the parlay house edge explainer lays out how vig stacks up leg by leg.
What kinds of parlays can you place?
Standard parlays pull from multiple games or sports on one ticket. A same-game parlay (SGP) is different — it stacks several bet types from a single contest, like a player prop and a point spread from the same NFL matchup. FanDuel and DraftKings both offer SGPs as a core product. A teaser is a parlay variant where you buy extra points on spreads or totals in exchange for reduced odds — moving a −3.5 spread to +2.5 sounds nice, but the payout reflects the favor you received. Explore all the variations in the guide to types of parlay bets.
Where is parlay betting legal in the US?
As of mid-2026, approximately 32 states permit statewide online or mobile sports wagering, and around 38 states plus Washington, D.C., have legalized some form of sports betting overall, following the Supreme Court's 2018 ruling in Murphy v. NCAA that struck down the federal PASPA ban. That said, availability varies — Mississippi, for example, limits sports betting to retail locations only, so online parlays aren't an option there. Arizona sits at the other end of the spectrum with 17 active licensed sportsbooks competing for your parlay action.
Do parlay winnings get taxed?
Yes. Every parlay payout is taxable US income regardless of whether you receive a form. A W-2G is issued when net winnings hit $600 or more and the payout is at least 300× the original wager — a threshold parlay wins cross more often than straight bets do, given how quickly multipliers compound. When net winnings exceed $5,000 the sportsbook is required to withhold 24% for federal taxes before handing over the cash. Full details are at the parlay taxes guide, and the specific W-2G rules are covered in the section on when a sportsbook must report your parlay win to the IRS.
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Is a parlay a smart bet?
Mathematically, parlays produce lower expected value than equivalent straight bets because the vig compounds across every leg — the more legs you add, the steeper the disadvantage. That doesn't mean people don't hit them; it means you should go in with clear eyes about the odds. If you're weighing a parlay against placing individual wagers, the parlay vs. straight bet comparison breaks down the trade-offs with concrete numbers so you can decide which approach fits your goals.