The new Polymarket promo code is MRGAMB, it gets new users a $50 trading credit after a $20+ deposit.
Polymarket is the largest event-contract trading platform available to U.S. users, letting you take a position on everything from NFL and NBA games to MLB, awards races and season-long futures. Below we walk through exactly how to claim the offer, whether Polymarket is legal where you live, how the pricing actually works, and what to expect from the app once you’re trading.
Polymarket Promo Code Details
- Polymarket Promo Code: MRGAMB
- Polymarket welcome bonus: Deposit $20 or more, receive $50 in trading credit
- Eligibility: 18+, U.S. resident with a valid Social Security Number
- Availability: Nationwide, though some contracts are restricted by state
How to Claim the Polymarket Promo Code?
- Tap the link above to open the Polymarket app or continue on mobile web. Using our tracked link automatically attaches the MRGAMB code.
- Create your account. You’ll need your name, address, phone number and SSN to verify identity, as required for any CFTC-regulated trading platform.
- Fund your account using a debit card, bank transfer or Apple Pay.
- Deposit at least $20. Once your deposit clears, the $50 trading credit lands in your account and is ready to use on any eligible market.
Is Polymarket Legal in the US?
Yes. Polymarket operates in the United States as a CFTC-regulated designated contract market, which puts it in a different regulatory lane than traditional sportsbooks.
Because trading is federally regulated rather than licensed state by state, Polymarket’s core sports markets are broadly consistent across the country, though a handful of specific contracts can be paused or unavailable depending on your state.
How Polymarket Pricing Works?
Every contract trades between $0.01 and $0.99, and that price is effectively the market’s implied probability. If a team is trading at $0.60 to win, the market is pricing roughly a 60% chance of that outcome. Buy at $0.60 and get it right, and each share pays out $1, a $0.40 profit per share. Get it wrong, and the contract settles at zero.
What Can You Trade on Polymarket?
The U.S. version of the app leans heavily into sports, with markets across:
- NFL, NBA, MLB, NHL
- NCAA football and basketball
- UFC and boxing
- Golf majors and tour events
- Tennis (ATP, WTA, ITF)
- World Cup, Champions League, MLS and major European soccer leagues
- Cricket and esports
Beyond single-game markets, you’ll also find season-long futures, think championship winners, MVP races and conference winners, as well as a smaller selection of approved non-sports categories.
Polymarket Deposits, Withdrawals and Fees
| Method | Typical max | Withdrawals supported |
|---|---|---|
| Debit card | $50,000 | Yes |
| Bank transfer | $50,000 | Yes |
| Apple Pay | $50,000 | Only via linked debit card, not Apple Cash |
| Wire transfer | No stated limit | No |
Polymarket doesn’t charge a fee to deposit or withdraw, though your bank or card issuer might. Where Polymarket does make money is a small taker fee charged when you buy or sell at the current market price rather than placing a limit order.
Polymarket App: Pros and Cons
| Pros | Cons |
|---|---|
| Deep list of sports and futures markets | Withdrawals have been reported as slow at times |
| Transparent, probability-based pricing | Customer support is email/chat only, no phone line |
| Federally regulated by the CFTC | No Apple Cash withdrawal option |
| No deposit or withdrawal fees from Polymarket itself | A handful of contracts restricted by state |
Polymarket Promo Code FAQs
What is the Polymarket Promo Code?
The code is MRGAMB. New users who deposit $20 or more receive $50 in trading credit.
Do I need to enter the code manually?
No, clicking through our link on this page attaches the MRGAMB code automatically, so the bonus applies as long as you complete your deposit through that link.
Is there a minimum age to use Polymarket?
Yes, you must be 18 or older and a U.S. resident to register.
This page contains affiliate links. If you sign up and make a deposit through Mr. Gamble, we may earn a commission at no extra cost to you. 18+, T&Cs apply. Trading event contracts involves risk of loss and may not be suitable for everyone. Availability of specific markets can vary by state. If you or someone you know has a gambling problem, call 1-800-GAMBLER.