If you've searched for a Polymarket Invite Code, you've probably also run into the terms "promo code" and "referral code" used almost interchangeably.
That's not a coincidence. On Polymarket, an invite code, a promo code, and a referral code all point to the same thing: a text string you enter at sign-up that can unlock a trading bonus.
You don't technically need one to open an account, but skipping it means leaving free trading credit on the table.
The current Action Network Polymarket invite code is ACTION and below, we'll break down that code alongside four other Polymarket promo code options, explain exactly how they work, and walk through how the platform itself operates.
Best Polymarket Invite Code Options in August 2026
There isn't just one Polymarket invite code floating around. Different publishers and partners distribute their own versions, but the good news is that the five below all unlock the same welcome offer. Pick whichever provider you trust most, and the outcome is identical.
| Polymarket Invite Code | Promo Code Provider | Trading Bonus |
|---|---|---|
| ACTION | The Action Network | Deposit $10, Get a $20 Trading Bonus! |
| INSIDER | Vegas Insider | Deposit $10, Get a $20 Trading Bonus! |
| GRINDERS | RotoGrinders | Deposit $10, Get a $20 Trading Bonus! |
| HANDLE | Sports Handle | Deposit $10, Get a $20 Trading Bonus! |
| LABS | Fantasy Labs | Deposit $10, Get a $20 Trading Bonus! |
Plenty of other Polymarket promo code variations exist across the web, tied to different outlets and campaigns, but these five are the ones we'd recommend today.
Each is currently active, tied to a legitimate partner, and unlocks the same deposit-and-bonus structure with no hidden catch.
Polymarket Invite Code vs. Polymarket Promo Code vs. Referral Code: What's the Difference?
Functionally, there isn't one. Polymarket's sign-up flow labels the entry field "promo code," but many partners refer to the same field as an invite code, and Polymarket's Refer-A-Friend program uses a similar mechanism tied to an existing user's handle rather than a publisher's code. All three terms describe entering a short string of text during registration to attach a bonus, or in some cases a waitlist skip, to your new account.
Where it can get slightly confusing is that a "referral code" specifically ties back to another individual trader, while a Polymarket invite code from a media partner like the ones in the table above is a standing, publicly available code anyone can use. Both routes land you in the same place: a funded account with bonus trading credit attached.
You should also know that none of this is mandatory. You can create a Polymarket account and start trading without entering any code at all. The only thing you'd give up is the welcome bonus, which is why we recommend grabbing one of the five Polymarket invite codes above before you deposit.
How Does Polymarket Work?
Polymarket is a prediction market. Instead of placing a traditional bet against a sportsbook's odds, you buy and sell shares in a "yes" or "no" outcome, called an event contract. Each contract is priced in cents, from 1¢ to 99¢, and that price reflects the market's collective view of how likely the outcome is. A contract trading at 65¢ implies the market sees roughly a 65% chance of that outcome happening.
If your contract resolves correctly, each share you hold settles at $1. If it resolves the other way, your shares settle at $0. Prices move in real time as more traders take positions, which means you can also sell a contract before it resolves to lock in a profit or cut a loss, something a traditional sportsbook wager doesn't let you do mid-game.
Polymarket currently lists markets across sports, politics, entertainment, and finance, and it's just one entry in a broader field of exchanges. You can compare it against other platforms on our full prediction markets hub if you want to see how the landscape looks beyond one exchange.
Is Polymarket Legal in the US?
Yes, at the federal level. Polymarket operates its US exchange as a CFTC-regulated Designated Contract Market, a status it secured in late 2025 by acquiring an existing licensed derivatives exchange. That means Polymarket answers to Commodity Futures Trading Commission rules on segregated customer funds, market oversight, and reporting, the same regulatory tier that governs traditional futures exchanges.
State-level treatment is messier and still evolving. A handful of states, including Illinois, Nevada, and a few others, have argued that sports-related event contracts function like sports betting under state law and have pushed back with cease-and-desist letters or litigation.
That fight is currently working its way through the courts, and access can shift depending on where those cases land. As of now, sports contracts are unavailable in several states, so double-check your state before signing up.
You can track the platform's current footprint on our dedicated Polymarket page.
How to Use a Polymarket Promo Code to Start Trading
Redeeming a Polymarket invite code takes just a few minutes. New users can follow the steps below to fund their account and get their bonus credited.
- Download the Polymarket app or head to the site and start the sign-up process with your email.
- Enter one of the five Polymarket invite codes from the table above in the promo code field before you finish registration. You can't add it after the fact.
- Verify your identity and confirm you're in an eligible state.
- Deposit at least $10 and the trading bonus is credited automatically.
Sign up with Polymarket promo code ACTION and you'll be able to Deposit $10, Get a $20 Trading Bonus!
Bonus credit is typically usable as trading collateral right away, but it isn't withdrawable until it's released through position settlement or liquidation, so read the terms tied to whichever Polymarket invite code you choose.
Once you're funded, our how to bet on Polymarket guide walks through placing your first trade.
Final Thoughts
The bottom line: whichever of the five Polymarket invite codes you use, you get the same $20 trading bonus on a $10 deposit. None of them requires a promo code to open an account, but entering one before you finish signing up is the only way to claim the bonus, so it's worth the extra ten seconds.
For the full rundown of the platform's current offer, our Polymarket promo code page stays up to date with the latest terms.
Polymarket Invite Code FAQs
What is the best Polymarket invite code right now?
ACTION, INSIDER, GRINDERS, HANDLE, and LABS are all currently active and unlock the same welcome offer, so the "best" one just comes down to which provider you trust.
Is a Polymarket invite code the same as a promo code?
Yes. Polymarket and its partners use invite code, promo code, and referral code to describe the same sign-up field, though a referral code specifically ties back to another user rather than a media partner.
Do I need a code to sign up for Polymarket?
No. You can create an account without one, but you'll miss out on the trading bonus tied to the codes above.
What bonus does the Polymarket invite code unlock?
Deposit at least $10 after entering a valid code and you'll receive a $20 trading bonus, credited automatically to your new account.
Can I add a promo code after I've already signed up?
No. The code has to be entered during the initial registration flow. It cannot be applied retroactively to an existing account.
Is Polymarket legal in my state?
Polymarket operates under federal CFTC oversight in most states, but sports contracts are currently unavailable in AZ, IL, MA, MD, MI, MT, NJ, NV, and OH due to ongoing state-level disputes.
How is Polymarket different from a sportsbook?
Instead of fixed odds set by a book, you're buying and selling shares in an outcome at a live, market-driven price, and you can exit a position before it resolves.
