Does ProphetX charge a vig?

No. Prices are set peer-to-peer by other traders, so there is no house margin inside the number. That is the structural reason the same call can pay more than a house-priced product.

Are there deposit or withdrawal fees?

Standard bank transfers are free. Card deposits and expedited withdrawals may carry a processor fee, which is shown before you confirm.

How does the ProphetX cost compare with Kalshi?

Kalshi charges a per-contract trading fee that peaks mid-range; ProphetX charges on winnings instead. For contracts you hold to settlement and win, the two land close together — the difference is that ProphetX costs nothing extra when you lose.

Is there a minimum trade size?

You can take a position for a few dollars, which is enough to clear the $10 requirement on the welcome offer across two or three markets.

ProphetX Fees Explained — No Vig, Commission on Wins

What does ProphetX charge? Nothing is baked into the price you see — pricing comes from other traders. ProphetX instead takes a commission on positions that win. Lose a position and there's no commission on top of the loss.

Why "no vig" is a structural thing

A house-priced product builds its margin into the number. A prediction market doesn't: two traders agree a price between $0.01 and $0.99, and the contract settles at $1.00 or $0.00. The exchange isn't taking the other side, so it has nothing to protect with a margin.

That's the whole idea behind the ProphetX line "same moments, bigger payouts" — the same call on the same game can return more, because the price wasn't shaded first.

Where the cost is

Commission on winnings. Charged when a position pays out, shown before you confirm.
The spread. The gap between the best bid and best ask. On marquee games it's tight; on thin markets it's your real cost.
Funding. Standard bank transfers are free. Card deposits or expedited withdrawals may carry a processor fee.

A worked example

Say you buy 100 contracts on the Cowboys at $0.55 — $55 committed. If they win, the position returns $100 and your gross profit is $45, less the commission on that profit. If they lose, you're out the $55 and nothing more. Compare that with a product where the price itself was already shaded against you before you clicked.

ProphetX vs Kalshi on cost

Kalshi charges a per-contract trading fee that peaks in the middle of the price range, win or lose. ProphetX charges only on winners. For buy-and-hold sports positions the two land close together; for a losing run, ProphetX is cheaper. For weather, ERCOT or election markets, Kalshi is your only option — Kalshi fees explained.

Trade $10, get $20 on ProphetX

Subject to regulatory approval. Limited time offer. T&Cs Apply. 18+ only. Restrictions and eligibility requirements apply. ProphetX is a CFTC-regulated sports prediction market, not a sportsbook. Event contract trading involves significant risk and is not appropriate for everyone. 100% loss can occur. Not available in all jurisdictions.

Sources & references

More: How to use ProphetX · ProphetX taxes · Full review

Frequently asked questions

ProphetX takes a commission on winning positions rather than building a margin into the price you see. Losing positions are not charged a commission, so your all-in cost only applies when you are paid out.