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

Updated on 7/20/26

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 try Polymarket? New users can enter the promo code GRINDERS during signup and Deposit $20, Get $50 Trading Bonus!

Polymarket US lets you trade on the outcome of real-world events, including sports, politics, entertainment, and finance. Each contract is tied to a specific result, and its price moves as traders buy and sell. Before placing a trade, read the contract rules so you know what counts as the winning outcome, how the market will be settled, what fees apply, and whether there’s enough trading activity to enter or exit at a reasonable price.

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The $50 bonus is issued as trading credits, which cannot be withdrawn as cash right away.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!
🌎 Bonus Available In 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
❌​ Bonus 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 20, 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.

Polymarket’s Legal Journey in the US

Polymarket returned to the U.S. market through QCX LLC, a CFTC-designated contract market it acquired in 2025. The main regulatory and business milestones include:

Kalshi vs. Polymarket: Key Differences

Kalshi is another CFTC-designated event-contract exchange available in the U.S., and it’s usually compared to Polymarket because both allow users to trade on real-world outcomes. However, while they serve a similar purpose, differences show up in areas like interface design, liquidity in specific markets, funding methods, fees, and promotions.

Choosing between them comes down to your preferences and what’s currently available, which is why it’s a good idea to check each platform directly, review active contracts, and compare fees and trading conditions before deciding where to trade.

If you want to learn more about how these two differ, check out our Kalshi vs. Polymarket review.

Polymarket Pros and Cons

Pros

Cons

Sports Predictions at Polymarket

Sports markets can cover game winners, totals, player stats, and full tournament outcomes. Each contract trades between $0.01 and $0.99, and the price reflects the market’s current estimate of the likelihood of that outcome. For instance, if a contract is trading at $0.55, the market is roughly saying there’s a 55% chance it’ll happen.

Here’s how that works in practice. If you buy 90 “Yes” contracts at $0.55 each, you’re spending $49.50 before fees. If the outcome ends up being Yes, each contract pays out $1, so you’d receive $90 total, for a profit of $40.50 before fees. If the outcome is No, the contracts are worth $0 and you lose what you paid.

You also don’t have to wait until the event is over to exit your position. At any point, you can sell your contracts to another trader at the current market price. And, depending on how the odds have moved, that price could be higher or lower than what you originally paid.

What Else Can You Trade on Polymarket?

Polymarket isn’t just about sports. You’ll also find markets based on real-world events across areas like politics, finance, economics, technology, crypto, culture, climate, and global affairs.

The lineup of available markets can change over time, and the U.S. version of the platform may not include everything you see on Polymarket’s international site. So, before placing a trade, check what’s currently available in the app and read how each market will be settled, including the source used to determine the final outcome.

Tips for Trading Live Sports Markets on Polymarket

Live sports markets can move fast, especially after key moments like goals, injuries, lineup changes, or penalties. Because of this, it helps to have a clear plan before you place a trade.

Start by reading the settlement rules for the market. In soccer, for example, some contracts only count the result after 90 minutes, while others include extra time and penalties. Knowing this upfront can prevent confusion later.

Next, take a look at the current buy and sell prices. If there’s a big gap between them, it may be harder to get in or out of a position at the price you want. It’s also worth checking how many contracts are actually available at those prices, since low volume can limit your ability to trade smoothly. And if you want more control over your entry price, consider using a limit order instead of buying at the current market price.

Finally, think about your exit strategy before you trade. Decide whether you plan to hold your position until the market settles or sell if the price moves in your favor.

Remember: waiting until the very end of a match can sometimes make it harder to find a buyer, especially if activity slows down.

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

When contacting support, include the market name, order details, and transaction information connected to the issue. Never send your password or account-verification codes.

Final Thoughts on the Polymarket Promo Code GRINDERS

Polymarket US is made for those traders who are willing to check contract rules, liquidity, and fees before taking a position. Eligible new users can enter GRINDERS during signup, deposit at least $20, and get $50 in trading credits, which must be used in a position before any resulting funds can be withdrawn.


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-designated contract market. Trading is currently unavailable in Nevada. Keep in mind the GRINDERS bonus has separate location restrictions and is unavailable in AZ, IL, MA, MD, MI, MT, NV, and OH.

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. Executed taker orders carry a fee under the current schedule, while executed maker orders receive a rebate. Canceled and expired orders aren’t charged a trading fee.

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.