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Two venues, one bet

Polymarket vs FanDuel arbitrage

Whether the two sides of one bet can be held at Polymarket and FanDuel at the same time for less than a certainty — measured after both venues have been paid.

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Can you arbitrage between Polymarket and FanDuel?

This is the thinnest overlap of the six pairs and the one where the live count is zero most often. Polymarket's player-market coverage is still filling in and FanDuel prices almost everything, so the set of bets both venues quote at once is small — and a two-sided position can only exist inside that set.

FanDuel moves on the money it takes and on what the market makers around it are doing. Polymarket moves when someone trades. Where both are quoting the same game line, the disagreement that opens a position is usually a Polymarket order book that has drifted on light volume rather than a FanDuel price that is wrong. That is worth knowing before you take one: the leg that moved is the leg that is more likely to keep moving.

What the fees do to a Polymarket and FanDuel position

One example, the same two posted prices on every pair page, put through these two venues' own published schedules.

A worked two-sided position at Polymarket and FanDuel, before and after each venue's published fee
Leg Price Implied Venue fee Net cost
Polymarket +112 47.17% 1.25¢ per $1 48.42%
FanDuel -104 50.98% none 50.98%
Both sides — 98.15% — 99.40%

On the posted numbers, +112 at Polymarket against -104 at FanDuel is a position worth $1.85 per $100.00 staked. Polymarket charges 1.25¢ per $1 on its leg, and FanDuel takes nothing separate on its leg. Once Polymarket and FanDuel have both been paid it is worth $0.60, which is the figure that means anything. A calculator that stops at the posted prices would have credited this Polymarket vs FanDuel position with $1.25 more than it pays.

Fees are stated in dollars per $1 of potential payout, which is the one unit both models fit in — a per-contract trading fee and a commission charged on winnings are otherwise not comparable. Schedules: Polymarket — Polymarket sports theta, raised 0.03 -> 0.05 Jul 2026; FanDuel — no separate fee.

Run your own numbers in the arbitrage calculator →

Live Polymarket and FanDuel positions

These decay in minutes. An arbitrage is a snapshot of two prices that were live moments ago, and it decays in minutes — often in seconds once either venue notices. Confirm BOTH prices at BOTH venues before staking either leg. A position with one leg filled and the other gone is not an arbitrage; it is a one-sided bet you did not intend to make. Venues also limit, void or refuse stakes at their discretion, so the profit is guaranteed by the arithmetic and by nothing else.

Polymarket and FanDuel are both quoting 2+ Touchdowns, 3+ Touchdowns, Anytime Touchdown, Passing Touchdowns, Pitcher Outs, Strikeouts, Moneyline, Spread, and Total on the board right now, and a two-sided position can only exist inside that overlap.

No arbitrage between Polymarket and FanDuel on the board right now

Premium shows both sides of each position: the bet, the venue and price for each leg, how to split a $100.00 stake, and what it returns either way. The count above is live and is usually zero — arbitrage is rare, which is the point of watching for it.

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Taking one: what goes wrong on this pair

Because the overlap is mostly game lines rather than player props, the stakes involved tend to be larger and the Polymarket depth question gets sharper. A game-line market on Polymarket can hold real size on a marquee fixture and almost none on a mid-week game with the same label. Check the size first; the position is only as good as the fill you actually get.

Polymarket. Polymarket's taker fee is a fraction of a percent, which makes its headline quote very close to the all-in cost and often the cheapest of the exchanges in the middle of the price range.

FanDuel. FanDuel's margin is inside the price, so it is charged on every bet regardless of the result.

Polymarket vs FanDuel arbitrage FAQ

Can you arbitrage between Polymarket and FanDuel?

Yes, but only on the markets both venues price, which is a small set. Polymarket's player coverage is limited, so most of the overlap is on game lines rather than player props.

Why does this page usually show no Polymarket and FanDuel positions?

Because the two boards barely intersect. A two-sided position needs both venues quoting the same bet on the identical line at the same moment, and most of what FanDuel prices has no Polymarket counterpart at all.

Is Polymarket legal to use in the United States?

Polymarket operates a United States venue through a CFTC-designated exchange, which is a different regulatory regime from state sports betting licensing. Availability depends on where you are, and BeatVig does not publish a state list because it changes faster than a page does.

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