Yes, you can parlay on Polymarket. Polymarket calls them combos: several outcomes joined into one position that pays $1 a share only if every leg wins. polymarket.com offers combos on sports moneylines, spreads and totals. Polymarket US offers combos with 2 to 10 legs.
Below: how combos are priced, what the market maker's cut costs you, the Polymarket US combo fee at every leg count, void rules, and our take on when a combo is worth your money.
What a Polymarket combo is
- One position, many legs. Polymarket describes combos as multi-leg positions combining several market outcomes into one Yes or No position.
- All legs have to win. One losing leg zeroes the combo.
- The payout multiplies the legs. The price lands near the leg probabilities multiplied together.
- You can get out early. Polymarket's help center says you can sell combo positions before resolution at current market prices.
- Priced by request for quote. Combos skip the normal order book. You ask, and market makers answer.
polymarket.com and Polymarket US combos compared
| polymarket.com | Polymarket US | |
|---|---|---|
| Who trades there | Most countries outside the US | US residents |
| Markets | Sports: moneylines, spreads, totals | Games listed for combos |
| Legs | Several, no maximum stated by Polymarket | 2 to 10 |
| Pricing | Request for quote | Request for quote |
| Quote timing | Makers get 400 ms to quote, you get 10 s to accept | Makers quote on request |
| Void leg | Per the underlying market's rules | Last fair market price set by the settlement committee |
| Taker fee | Not stated in the combo docs | C x p x [0.0695 x (1 - p) + 0.04 x (1 - p)^4] |
| Launched | Live on polymarket.com/combos | Public launch around August 20 to 22, 2026 |
How the request for quote works
- You pick the legs and the size and hit request.
- Polymarket sends the request to market makers. They have 400 milliseconds to answer.
- You see the best quote and get about 10 seconds to accept.
- The market maker gets an optional 1 second last look before the fill.
- If nobody quotes, the button stays disabled and nothing fills.
The timing favors the market maker. They see your legs and your size and price the whole ticket, while you get one number and a countdown. Do the math before you click.
How to price a Polymarket combo yourself
Multiply the leg prices. For independent legs from different games, that product is the fair price of the combo.
| Leg | Price | Implied chance |
|---|---|---|
| NFL favorite moneyline | 60 cents | 60% |
| MLB game over the total | 55 cents | 55% |
| College football spread | 50 cents | 50% |
| Fair combo price | 16.5 cents | 0.60 x 0.55 x 0.50 = 16.5% |
At 16.5 cents, $10 buys about 60 shares that pay about $60 if all three legs win, a 6.06x payout. If any leg loses, the combo pays nothing.
What the market maker's cut costs you
The quote you get will sit above the product. That gap is your cost.
| Quote | Share of your stake lost to the gap | Payout multiple |
|---|---|---|
| 16.5 cents (fair) | 0% | 6.06x |
| 17 cents | 2.9% | 5.88x |
| 18 cents | 8.3% | 5.56x |
| 19 cents | 13.2% | 5.26x |
| 20 cents | 17.5% | 5.00x |
The math: share lost = 1 - fair / quote. At 18 cents, 1 - 0.165 / 0.18 = 8.3%.
- Sportsbook benchmark: a three-leg parlay at -110 per leg pays 6.96 times your stake against a fair 8 times, a 13% margin. On this combo, 13% equals a quote of 0.165 / 0.87 = 19 cents. Under 19 cents, Polymarket beats a standard sportsbook parlay.
- Our take: a quote within a cent of the product is a good price. A quote 3 cents over the product on a 16.5 cent combo costs you more than the sportsbook down the street.
One Polymarket US combo from quote to payout
You buy 100 contracts of the combo above at an 18 cent quote on Polymarket US.
| Line | Amount | Math |
|---|---|---|
| Cost | $18.00 | 100 x 0.18 |
| Combo taker fee | $1.35 | 100 x 0.18 x (0.0695 x 0.82 + 0.04 x 0.82^4) = 1.3513 |
| Total out of pocket | $19.35 | 18.00 + 1.35 |
| Payout if all three legs win | $100.00 | 100 x $1 |
| Profit if all three win | $80.65 | 100.00 - 19.35 |
| Expected value at fair odds | -$2.85 | 0.165 x 100 - 19.35 |
| Expected loss as share of cost | 14.7% | 2.85 / 19.35 |
A single market at the same 18 cent price would carry a $1.03 fee, so the combo formula charges 31% more. Add the quote gap and you start each $19 combo about $2.85 behind.
The Polymarket US combo fee climbs with every leg
The combo formula adds 0.04 x (1 - p)^4 to the normal rate. The lower the combo price, the bigger the surcharge. Stack 50/50 legs and watch what happens:
| Legs at 50 cents | Fair combo price | Combo taker fee on 100 | Fee as share of stake |
|---|---|---|---|
| 2 | 25 cents | $1.62 | 6.5% |
| 3 | 12.5 cents | $1.05 | 8.4% |
| 4 | 6.25 cents | $0.60 | 9.6% |
| 5 | 3.1 cents | $0.32 | 10.2% |
| 6 | 1.6 cents | $0.17 | 10.9% |
On a Kalshi combo the same six-leg ticket pays a 7% fee. On Polymarket US the fee alone passes 10% of your stake at five legs, and the quote gap comes on top of that. Full schedule in Polymarket fees explained.
Correlation changes the fair price
- Different games: the legs barely affect each other, so the product is a fair benchmark.
- Same game, same direction: a favorite to win and the favorite to cover move together. The true chance of both hitting is higher than the product, so expect a quote above it.
- Same game, mixed legs: an underdog to cover and the game under the total often land together in low-scoring games. Think through each pair before you trust the product.
Void legs and last fair market price
On Polymarket US an unresolvable leg, such as a walkover or a cancelled game, settles at a last fair market price set by the settlement committee. The combo pays out on the product.
- A combo paying $80 on a sweep, with a void leg valued at 60 cents, pays $80 x 0.60 = $48.
- You don't get your stake back on a void leg. You get the leg's last fair value multiplied through.
- On polymarket.com each leg follows its own market's rules. Read the rules tab of every leg.
Buying No on a combo
polymarket.com describes a combo as one Yes or No position, so you can also buy No, which wins if any leg fails. On the three-leg combo above, fair No sits at 100 - 16.5 = 83.5 cents. You win 16.5 cents a share about 83.5% of the time. It works like any 83 cent favorite: a big chance of a small win, with fees taking a larger share of your profit.
Cash out or ride the last leg
Combos on polymarket.com keep trading before resolution, so once two legs have won, the combo is really a bet on the last leg. Say you bought 100 shares of the 16.5 cent combo at 18 cents, $18 in. The NFL favorite wins. The MLB game goes over. The college football spread sits at 50 cents.
| Choice | What happens | Result before any exit fee |
|---|---|---|
| Sell now | The combo trades near the last leg's price, about 50 cents | About $50 back on $18, a $32 profit locked |
| Hold | 50% chance of $100, 50% chance of $0 | Expected $50, a coin flip between +$82 and -$18 |
- Both choices have the same expected value at a fair 50 cent price. Selling just swaps the coin flip for a sure $32.
- A market maker buying your combo back will pay a bit under fair. Check the bid against the last leg's price before you sell.
- Selling pays a taker fee. Holding to a win pays none.
Five combo mistakes to skip
- Accepting the first quote without doing the product. Ten seconds is enough to multiply three numbers.
- Stacking legs to chase a big multiple. Each leg adds fee and gap. Six coin flips pay 64 times fair, minus 10% or more in fees on Polymarket US.
- Ignoring correlation. Two legs from one game are one bet in disguise.
- Forgetting void rules. A walkover leg on Polymarket US pays its last fair value, not a refund.
- Sizing a combo like a single market. A 16.5% shot loses about five times in six. Size for the loss.
How to make a parlay on Polymarket
- On polymarket.com open the Combos page. On Polymarket US open a game in the app.
- Add each outcome as a leg.
- Multiply the leg prices. Write the product down.
- Enter your stake and request a quote.
- Compare the quote with your product. Accept within the window if the gap fits your budget.
- Find the combo in your portfolio as one position. Sell before resolution if you want out.
Disabled button? No market maker is quoting that combination. Pick a more popular game or drop a leg.
When is a Polymarket parlay worth it
- Yes: two or three legs you hold a real view on, from popular games, with a quote within a cent or two of the product.
- Yes: a correlated pair you believe the market maker underprices.
- No: five or more legs on Polymarket US. The combo fee alone passes 10% of your stake.
- No: a combo built to express one view. Buy the single market instead, with a tighter spread and a smaller fee.
Polymarket combos versus Kalshi combos
| polymarket.com | Polymarket US | Kalshi | |
|---|---|---|---|
| Legs | Several, sports only | 2 to 10 | 2 or more, no published cap |
| Non-sports legs | No | Not stated | S&P 500, Nasdaq-100, crypto |
| Taker fee on a combo | Not stated in the combo docs | Normal rate plus a long-odds surcharge | Normal taker formula |
| Void leg | Per market rules | Last fair market price | Last fair price |
| Sell before resolution | Yes, per the help center | Not stated in the docs we read | Not confirmed by Kalshi's help center |
For short sports combos, the venue with the tightest quote wins. For long combos, Kalshi's plain fee beats the Polymarket US surcharge. For index and crypto legs, Kalshi is the only choice of the three.
For developers
- polymarket.com exposes combo positions through the Data API v2 endpoint for combo positions.
- Polymarket US offers endpoints to create and read combo instruments and an RFQ flow for market makers.
Details in the Polymarket API guide.
Build Polymarket parlays in Rivo
Rivo is not an exchange. It's a $15 a month terminal on top of your own Polymarket, Polymarket US, Kalshi and Gemini accounts. For parlays, Rivo gives you one slip across three venues.
- Parlay slip beside every search. The market explorer keeps the slip open on the right. Each row has a + leg button.
- Only legal legs. The contract picker reads each contract's combo data and offers only legs the venue accepts.
- One venue per parlay. polymarket.com, Polymarket US and Kalshi don't share accounts, so a Rivo parlay stays on one venue.
- From market to slip in one click. Any market detail view offers "Turn this into a parlay".
- Research the legs. The Polymarket whale tracker shows where large money lands, and the Polymarket leaderboard ranks wallets by profit on settled markets.
Kalshi runs combos on a wider menu, including stock index and crypto legs. See Kalshi parlays explained and the venue comparison at Kalshi vs Polymarket.
Frequently asked questions
Can you parlay on Polymarket?
Yes. Polymarket calls parlays combos. On polymarket.com combos cover sports moneylines, spreads and totals. On Polymarket US a combo takes 2 to 10 legs. Every leg has to win for the combo to pay $1 a share.
Does Polymarket have parlays?
Yes, on both versions. polymarket.com launched combos for sports and builds them at polymarket.com/combos. Polymarket US opened combos to the public in late August 2026 after testing from August 5.
How do you make a parlay on Polymarket?
On polymarket.com open the Combos page and add legs from sports games. On Polymarket US open a game in the app and add legs. Enter your stake and request a quote. Market makers answer within 400 milliseconds and you get about 10 seconds to accept the best quote.
How many legs can a Polymarket parlay have?
Polymarket US allows 2 to 10 legs. Third-party guides report a 10-leg limit on polymarket.com too, but Polymarket's own combo pages don't state a maximum for polymarket.com.
How are Polymarket parlays priced?
Through request for quote. Market makers quote a price close to the product of the leg prices, plus their margin. Three legs at 60, 55 and 50 cents multiply to 16.5 cents, so a fair quote sits near 16.5 cents a share.
What does a Polymarket US combo cost in fees?
The taker pays contracts x price x [0.0695 x (1 - price) + 0.04 x (1 - price)^4], rounded to the cent. 1,000 combo contracts at 50 cents cost $18.62. 100 contracts at 18 cents cost $1.35, against $1.03 for a single market at the same price.
What happens if a leg of a Polymarket US combo is cancelled?
An unresolvable leg, such as a walkover or a cancelled game, settles at a last fair market price set by Polymarket US's settlement committee. A combo paying $80 with a void leg valued at 60 cents pays $48.
Can you cash out a Polymarket parlay early?
Yes. Polymarket's help center says you can exit combo positions before resolution at current market prices.
Why is the Polymarket combo button disabled?
Because no market maker is quoting that combination. The button stays disabled until one does. Popular games get quotes, obscure pairings often don't.