Polymarket Promo Code GRINDERS: Get $50 Sign-Up Bonus

Updated on 7/11/26

Polymarket
Deposit $20, Get $50 Trading Bonus!
Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.

Want to get started with Polymarket? The promo code GRINDERS is active, and new users who enter it during signup and deposit at least $20 can get the welcome offer of: Deposit $20, Get $50 Trading Bonus!

Polymarket US lets you trade on real-world events using U.S. dollars, with markets covering sports, politics, and more. And if you’re using it for the first time this week, the timing works perfect for you.

With the 2026 World Cup quarterfinals running from July 9 through July 11 and the Wimbledon singles finals set for July 11 and 12, there’s a lot for you to follow and a good way to see how prices change as events play out. Keep reading to see how these markets work when you use the Polymarket promo code GRINDERS and what to watch for.

Use Polymarket promo code GRINDERS for the $50 trading bonus

What is the Polymarket Referral Code?

The Polymarket referral code is GRINDERS, which gets you the welcome offer of Deposit $20, Get $50 Trading Bonus!

The $50 bonus is issued as trading credits, which cannot be withdrawn as cash right away. The credits must first be used as collateral for a position. Once that position is settled or closed, any resulting funds may become available for withdrawal under Polymarket’s standard rules.

💰 Polymarket Promo Code / Polymarket Referral Code GRINDERS
🎁 Polymarket New User Offer Deposit $20, Get $50 Trading Bonus!
🌎 U.S. States AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NJ, NY, NC, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, DC
❌​ Not Available In AZ, IL, MA, MD, MI, MT, NV, and OH
✍️ Terms Must be 18 years or older and have a legal, U.S. residential address within the applicable state, D.C., or U.S. territories. Not available in AZ, IL, MA, MD, MI, MT, NV, and OH.
✔️ RotoGrinders Last Verified On July 11, 2026

How to Use the Polymarket Promo Code GRINDERS

  1. Download the Polymarket US app from the App Store or Google Play.
  2. Create a new account and enter GRINDERS in the promo or referral code field during signup.
  3. Complete the identity-verification process in the app.
  4. Deposit at least $20 by debit card or ACH bank transfer.

After the qualifying deposit clears and the offer requirements are met, the $50 trading credit is added to the account.

If you want to compare Polymarket with another prediction market, check out our review of the Best Prediction Market Apps.

World Cup Quarterfinals and Wimbledon Schedule: July 9-12

From Thursday through Sunday, the schedule includes all four World Cup quarterfinals and the final rounds at Wimbledon.

For Polymarket users, this is a goldmine. Each of these events usually has active prediction markets, so you can buy and sell shares based on who you think will win. Knowing the schedule helps you decide when to check prices, place trades, or react to new information as matches approach.

EventDateStage
Spain vs. BelgiumJuly 10World Cup quarterfinal
Norway vs. EnglandJuly 11World Cup quarterfinal
Argentina vs. SwitzerlandJuly 11World Cup quarterfinal
Wimbledon women’s semifinalsJuly 9Final four
Wimbledon men’s semifinalsJuly 10Final four
Wimbledon women’s finalJuly 11Championship match
Wimbledon men’s finalJuly 12Championship match

Polymarket’s Legal Journey in the US

Polymarket made its way back to the U.S. by setting up a separate, regulated exchange. Here are some of the key moments along the way:

Kalshi: A Legal Alternative to Polymarket

Kalshi refer-a-friend trade on anything

While Polymarket is fully accessible for eligible American users via the mobile app, it is smart to have trading options.

A fully regulated, CFTC-approved alternative you should consider is Kalshi. Like Polymarket, this legal predictions market lets you make dynamic trades across sports, politics, pop culture, economics and more.

Kalshi vs. Polymarket: Key Differences

Feature Polymarket Kalshi
Legal in the U.S.? ✅ Yes ✅ Yes
Crypto-Based? ❌ No. Polymarket US trades in USD ❌ No
User-Driven Predictions? ✅ Yes ✅ Yes
Ease of Use? Moderate Moderate
New User Offer Deposit $20, Get $50 Trading Bonus! Trade $10, Get $15!
Promo Code GRINDERS GRINDERS

As you can see, both prediction market apps have their strengths. The main difference for us right now is the new user bonus offer on each platform, but if you want to go even deeper, check out our Kalshi vs. Polymarket review.

If you’re in the US and want to use something other than Kalshi, you can usually sign up for sportsbook promos as long as you’re in a legal sports betting state.

Polymarket Pros and Cons

Pros

Cons

Sports Predictions at Polymarket

Polymarket lets you make simple predictions on sports, like who will win a game, how many points will be scored, or how far a team will go in a tournament. Each prediction is priced between $0 and $1.

You can think of this price like a percentage chance. For example, if a contract costs $0.55, that means the market thinks there’s about a 55% chance that outcome will happen. If your prediction is correct, each contract pays out $1. If it’s wrong, it pays $0.

Say you buy 90 “Yes” contracts at $0.55 each, spending $49.50 (before fees). If the outcome is “Yes,” those contracts will be worth $90 total. That means you made $40.50 in profit before fees.

The good news is you don’t have to wait until the event ends to act on your position. Because Polymarket is a live market, you can choose to sell your contracts at any time if there’s a matching buyer. And, since these markets are driven by active trading, prices can change at any time as other people buy and sell. This means the price you see can go up or down before or during the event.

What Else Can You Trade on Polymarket?

Sports are only part of what Polymarket US covers. Other market categories include politics, finance, economics, climate, culture, geopolitics, technology, and crypto.

That being said, the exact contracts available can change, and the U.S. platform doesn’t always carry the same markets as Polymarket’s international site. Check the app for what’s currently available to your account.

Tips for Trading Live Sports Markets on Polymarket

Live markets can change quickly, especially after a game begins, with prices updating in real time as new information (like scores or injuries) becomes available.

Here are a few things to keep in mind as you trade:

Banking Experience at Polymarket

Polymarket US supports debit card and ACH bank transfer deposits directly in the app. Available options can vary by account, so it’s a good idea to check what’s enabled for you.

To deposit, open the app, tap the deposit option, and follow the prompts for either debit card or ACH. Similarly, withdrawal methods are shown within your account, and the app will display the options currently available to you.

See how the banking experience at FanDuel Predicts compares to Polymarket’s.

Responsible Trading at Polymarket

Only trade with money you can afford to lose. Anyone who needs help with gambling-related harm can call or text the National Problem Gambling Helpline at 1-800-MY-RESET.

If you need more information on how to keep things fun, read our responsible trading guide.

Customer Support at Polymarket

Polymarket US offers support by email at support@polymarket.us and through in-app chat.

Fortunately, the support team is super responsive and helpful, making sure users get the assistance they need.

Final Thoughts on the Polymarket Promo Code GRINDERS

Polymarket US works differently from a traditional sportsbook. Instead of fixed odds, you’re trading event contracts that reflect what the market thinks will happen. You can buy a position, watch the price change over time, and sell before the event is decided if there’s enough activity in the market.

In other words, prices move based on what other users believe, and you’re trading against those expectations. If you think an outcome is more likely than the current price suggests, you can buy. If you think it is less likely, you can sell or avoid the trade.

Before placing any order, check how active the market is and understand the fees involved. Markets with more participants are usually easier to enter and exit, while quieter markets can be harder to trade in. Prices can also change quickly, so what you see on screen may change before your order is completed.

Overall, Polymarket is just a different way to get involved with predictions, whether that’s sports or something else. And if you’re just getting started, don’t forget to take advantage of the current Polymarket promo code GRINDERS, which gives new users a $50 trading bonus when you deposit $20.


Polymarket Promo Codes FAQs

What is the Polymarket promo code and referral code?

The Polymarket promo code and referral code are both GRINDERS. Eligible new users who enter it during signup and deposit at least $20 can receive $50 in trading credits.

Can I withdraw the $50 Polymarket bonus directly?

No. The credits must first be used as collateral for a position. Funds released after settlement or liquidation may then become available to withdraw.

Is Polymarket legal in the US?

Yes. Polymarket US operates through QCX LLC, a CFTC-registered designated contract market. Availability still depends on your location.

Does Polymarket have sports betting?

Polymarket US offers sports event contracts rather than traditional sportsbook bets. Markets can include game winners, spreads, totals, props, tournament advancement, and futures.

If you want to bet on traditional sportsbooks, check out our guide on the Top 11 Best Mobile Sports Betting Apps

Does Polymarket charge fees?

Yes. Polymarket US charges fees on executed taker orders and may pay rebates on executed maker orders. Canceled and expired orders aren’t charged.

Is Kalshi better than Polymarket?

It depends on the markets you want to trade. Compare liquidity, fees, funding methods, available contracts, and current signup offers before choosing.

About the Author

vgandolfo
Virginia Gandolfo (vgandolfo)

Virginia Gandolfo is a seasoned writer with over six years of experience crafting engaging, reader-focused content. She has honed her skills in the iGaming, sports betting, DFS, and casino sectors.

Virginia holds a degree in Public Relations from the Universidad Argentina de la Empresa (UADE). She was also accepted into Harvard’s Continuing Education post-graduate master’s program for a Creative Writing and Literature Degree and is waiting for the ideal moment to pursue it.