Polymarket Promo Code INSIDER: Deposit $10, Get $25 Bonus October 2026

Dylan Wilkerson Sports Betting Expert ✅ Fact checked by Patrick Everson

6 minute read

Polymarket is live in the US and our promo code INSIDER turns a $10 deposit into $35 worth of trading funds. It took me 5 minutes to claim the bonus after signing up and depositing $10 with Apple Pay. It's really that easy and one of the reasons I have Polymarket as my #1 choice for prediction market apps right now.

In fact, by using our Polymarket promo code INSIDER for all of the 2026 MLB Divisional Round , you can Deposit $10, Get a $25 Trading Bonus!

Polymarket Promo Code at a Glance

• Polymarket Promo Code INSIDER, entered in the "I have a Referral code" field during registration
• Qualify with a $10 deposit, get a $25 trading bonus. No trade needed.
• Bonus value is $5 in credit per $1 deposited. Better than Kalshi's $1-for-$1
• Available in: AK, AL, AR, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IN, KS, KY, LA, ME, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY.
• Platform: Mobile only. iOS and Android, no desktop option for US traders.

Updated on 10/9/26

Polymarket

Deposit $10, Get a $25 Trading Bonus!

Bonus Code

INSIDER

Claim $25

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.

Polymarket Promo Code Details for October 2026

Table of Contents

1. Polymarket Promo Code at a Glance
2. Polymarket Promo Code Details for October 2026
3. Today's Featured Prediction Markets: NFL Week 4, SB Champion, EPL and NBA
4. My First Trade on Polymarket
5. How To Sign Up With The Polymarket Promo Code
6. How The Polymarket $25 Bonus Works
7. Polymarket Promo Code Comparisons
8. How The Polymarket Referral Program Works
9. Trade With Polymarket's $25 Offer
10. What Is Polymarket?
11. Polymarket Prices And Implied Probability
12. Is Polymarket Legal?
13. Who Is Polymarket For?
14. Sports On Polymarket Vs Traditional Sportsbook
15. Other Events On Polymarket
16. Funding And Wallets
17. Polymarket Liquidity Rewards Program
18. Polymarket vs. Kalshi
19. Responsible Trading
20. Customer Support
21. History Of Polymarket
22. Tips To Get Started On Polymarket
23. Polymarket FAQ

Today's Featured Prediction Markets: Thursday Night Football, EPL, NFL and NBA Futures

TNF: Bucs vs Cowboys on Amazon Prime Video

Updated October 2026  - Prediction Odds Provided by Polymarket - Subject to Change

English Premier League Champion 2027

Total Volume: $15.14M as of October 09, 2026

Check out the latest EPL markets on Polymarket US.

NFL: 2027 Pro Football Champion

Total Volume: $50.8M as of October 09, 2026

Check out the latest NFL Futures markets on Polymarket US.

NBA: 2027 Champion Odds

Total Volume: $20.8M as of October 09, 2026

Check out the latest NBA Futures markets on Polymarket US.

My First Trade on Polymarket

After I deposited $10 via Apple Pay I went looking at the Week 1 board. New England at Seattle on September 9 was a Super Bowl rematch, and the market has the Patriots at 38¢ to win. That price is the market's probability: 38%.

Spend $10 and you get 26 shares at $0.38, costing $9.88.

• Patriots win → 26 shares settle at $1.00 each = $26.00, a profit of $16.12.
• Patriots lose → the shares settle at $0 and the $9.88 is gone.

That's the 2.63x payout on the New England side — the underdog price, where each share is cheaper because it's less likely to pay.

Taking the Other Side

Seattle is trading at 63¢ as the defending champion at home. The same $10 buys 15 shares at $0.63, costing $9.45.

• Seahawks win → 15 × $1.00 = $15.00, a profit of $5.55. That's the 1.59x figure on the Seattle side.

Same $10, different shape of risk. The Patriots side pays nearly three times as much and hits less than two times in five.

Selling Before the Game Ends

Say New England goes up ten in the second quarter and the price climbs from 38¢ to 55¢. Selling all 26 shares then returns $14.30, a profit of $4.42 before the half is over.

Note what that costs you: $11.70 of remaining upside. Selling an underdog early caps a much larger payout than selling a favorite would, which is the trade-off to weigh when the price is running in your favor. A fixed-odds ticket doesn't give you the choice at all.

Using the Full $35 (Deposit + Bonus)

The $10 deposit plus the $25 bonus gives you $35 in buying power — 157 Patriots shares at 38¢ for $59.66.

• Patriots win → 157 × $1.00 = $157.00, a profit of $97.34.
• Patriots lose → $0. But only $10 of that $59.66 was your own money.

The return is 163% either way, whether you're risking $9.88 or $59.66. The bonus doesn't improve the trade, it just lets you take a much bigger position on the same one.

How it resolved

Seattle won 13-10. The Patriots contracts settled at $0, so the $9.88 position and the $59.66 bonus-funded position both went to zero. That's the point of the exercise rather than a footnote to it; a 38¢ contract is priced to lose more often than it wins, and the bonus scales the position, not the odds.

How To Sign Up With The Polymarket Promo Code

The whole process takes about 10 minutes. Two things to know before you start: the bonus can only be claimed in the mobile app, not on desktop, and the promo code has to be entered during signup (it can't be added to an existing account afterwards).

Before you begin check you're eligible (~1 min)

You'll need to be 18 or older and physically located in an eligible state. Polymarket US isn't available in Arizona, Illinois, Massachusetts, Maryland, Michigan, Montana, Nevada, Ohio or Washington. Have a government-issued photo ID and your Social Security number ready, verification asks for both.

1. Download the app (~1 min)
   • Get the Polymarket US app from the App Store or Google Play. Make sure it's the official Polymarket US app. The international Polymarket.com platform is a separate product and the bonus doesn't apply there.
2. Enter promo code INSIDER during signup (~2 min)
   • Create your account with an email address and password. When you reach the promo or referral code field, enter INSIDER. This is the step people miss and there's no way to apply the code later. Skipping it forfeits the $25 bonus.
3. Verify your identity (~2–5 min)
   • Enter your legal name, date of birth, address and SSN, then follow the prompts to photograph your ID. Most approvals come back in a couple of minutes. If yours is held for manual review, you can carry on to the next step and come back (you just won't be able to trade until it clears).
4. Allow location access (~30 sec)
   • Polymarket checks your location every time you trade, as CFTC rules require. Turn on location permissions when prompted. If the check fails, disable any VPN, switch from Wi-Fi to cellular data, and confirm precise location is enabled in your phone settings.
5. Deposit at least $10 (~2 min)
   • Fund the account with debit card, Apple Pay or bank transfer (ACH). Card and Apple Pay are instant; ACH takes 1–3 business days, and the bonus won't post until the deposit clears. If you want to trade today, use a card or Apple Pay. Depositing more than $10 doesn't increase the bonus, it's a flat $25.
6. Confirm the $25 bonus has landed (~1 min)
   • Once the deposit processes, check your balance shows $35, your $10 plus the $25 bonus. You don't need to place a trade to unlock it. If the balance still reads $10 after the deposit has cleared, contact support through the in-app chat before trading.
7. Place your first trade
   • Pick a market you already follow (a single game, a futures market, an election, etc.) and buy Yes or No shares. Contracts trade between $0.01 and $0.99, and the price is the market's implied probability. You can sell any time the market is open rather than waiting for the event to settle.

One thing to remember: the bonus expires 30 days after it's credited. Unused, it's forfeited.

How The Polymarket $25 Bonus Works

After a qualifying $10 deposit with code INSIDER, Polymarket credits a $25 trading bonus, giving you $35 in total trading funds.

The bonus can be used to buy Yes/No contracts and must be used within 30 days of receipt. Winnings from bonus trades are withdrawable. You can use this bonus on any amount of trades, but trades will use your cash balance first, then your bonus funds.

If the bonus expires unused, it's forfeited.

Polymarket Promo Code Comparisons

How The Polymarket Referral Program Works

The code INSIDER I mention here is the welcome offer for new users, but Polymarket also runs a separate referral program for people who are already trading. The two aren't the same thing.

The referral program rewards volume, not sign-ups. Before your referral link earns anything, your account has to reach $10,000 in lifetime trading volume. Once you clear that, you collect a share of the net trading fees the users you refer generate, paid out daily in pUSD. It's a slower, longer-term payout than the one-time welcome bonus, but it keeps paying as long as your referrals stay active.

So if you're new, start with the welcome offer and claim the $25 with the INSIDER code. The referral link is something you grow into once you're trading regularly.

Trade With Polymarket's $25 Offer

Once you've claimed the Polymarket promo code INSIDER offer, the next question should be: where can I use this $25 trading bonus?

Right now, the biggest opportunities are the MLB postseason, which opens Tuesday, September 29, NFL Week 4 and season-long football futures, NHL opening night on the same Tuesday, and the prediction markets covering politics, technology, and news boards that run year-round.

⚾ MLB Postseason Markets

The regular season ended Sunday, September 27, and all 12 playoff teams are locked in. The Wild Card Series open Tuesday, September 29 on NBC and Peacock: Phillies at Braves at 2 p.m. ET, White Sox at Astros at 5 p.m. ET, Red Sox at Yankees at 8 p.m. ET, and Cubs at Padres at 10 p.m. ET. Each is a best-of-three with the higher seed hosting every game. The Rays, Guardians, Brewers and Dodgers sit the round out on byes.

Short series are where prediction market pricing moves fastest. A best-of-three turns on one starting pitcher, so an advance contract can reprice several cents between first pitch and the third inning. Buy a team to advance, watch them take Game 1 on the road, and you can sell into the move instead of holding to the final out.

Polymarket is MLB's official prediction market exchange partner, so the postseason board is one of the deepest on the app.

Top MLB Markets

1. World Series Winner: The long hold. With the field set, prices now move on matchups and rotation order rather than standings.
2. League Pennants: A position on who comes out of each league. Useful when you like a club's path through its side of the bracket more than its odds to win it all.
3. Series Winner: Round-by-round advance contracts. The most active board during a best-of-three or best-of-five.
4. Game Winners: Single-game contracts, where a announced starter or a bullpen used up the night before repriced the market fast.

Pro tips for the postseason board:

• Starting pitcher announcements move short-series prices more than anything else. Check who's scheduled before you take a position.
• Home-field advantage is worth more in a best-of-three, where the higher seed hosts all three games, than in any later round.
• Bullpen usage carries over. A team that burned its closer in a Game 1 extra-inning win is a different team in Game 2, and the market is often slow to reflect it.

The nice part is you're not married to a pick. If your read changes after an injury, a cold streak, or some call-up who's suddenly carrying a lineup, you can sell out or add to your position before the market settles.

🏈 NFL Futures Markets

Polymarket lets you trade on Super Bowl winners, conference champions, division races, MVP, and other season-long NFL markets.

Top NFL Markets

1. Super Bowl Winner: The long-haul hold. Prices move slowly outside of major injuries and losing streaks, so it's about picking an entry rather than trading it week to week.
2. Conference Champions: A cheaper way to back a contender than the outright Super Bowl price, if you like a team's path through its side of the bracket.
3. Division Winners: The steadiest read on the board, and it reprices fast when a starting QB goes down.
4. NFL MVP: A quarterback market, mostly. Early value sits with a healthy QB whose team looks ready to take a step up.

Pro Tips for NFL Markets:

• Early-season results move futures less than they feel like they should. One game is a small sample; quarterback health and starting-job changes move the board far more.
• Quarterback injuries and in-season starting-job changes move the market more than any single result.
• Futures odds tend to shift significantly during the opening weeks of the regular season.

What Is Polymarket?

The Polymarket app is a CFTC-regulated prediction market platform that lets you trade on the outcomes of real-world events.

Rather than taking a fixed price, you buy and sell contracts tied to specific outcomes across categories such as sports, politics, economics, technology, culture, and weather.

Polymarket Prices And Implied Probability

One of the first things you'll notice on Polymarket is that contracts are priced between $0 and $1. The good news? Converting those prices into probabilities is incredibly easy.

On Polymarket, a contract's price equals its implied probability. For example:

• A Yes share trading at $0.25 implies a 25% chance.
• A Yes share trading at $0.60 implies a 60% chance.
• A Yes share trading at $0.80 implies an 80% chance.

This makes it easy to see how confident the market is in a particular outcome, whether it's an MLB game, election result, or major news event.

Another thing many traders like is that prices constantly move as new information becomes available. If a market moves in your favor, you don't always have to wait for the final outcome. You can often sell your position before the event is resolved and lock in a profit.

As you become more comfortable with the platform, you'll start comparing Polymarket prices with sportsbook odds and other prediction markets to spot potential value opportunities.

Is Polymarket Legal?

Yes. The Polymarket app is a CFTC-regulated event contract platform available to eligible users in much of the United States.

What makes you eligible:

• To access the Polymarket app, you must be physically located in an eligible state and complete identity verification. Like other regulated event contract platforms, Polymarket uses geolocation technology to confirm your location before allowing trading activity.
• You must be at least 18 years old to create an account, although age requirements may change by jurisdiction.
• The Polymarket app is not available in Arizona, Illinois, Massachusetts, Maryland, Michigan, Montana, Nevada, Ohio, and Washington.

Can you use Polymarket in California?

Yes. California residents can use the Polymarket app as long as they're physically located in the state, complete identity verification, and meet the platform's eligibility requirements.

Can I use Polymarket in Texas?

Yes. Polymarket is available in Texas. Users must complete identity verification and pass geolocation checks before they can trade.

Does Polymarket work in Florida?

Yes. Florida is one of the states where eligible users can access the Polymarket app. You'll need to verify your identity and be physically located in Florida when trading.

Who is Polymarket For?

Polymarket is for sports fans, news followers or people who like reality TV shows (Big Brother, Bachelor, etc.). Polymarket offers the ability to trade on outcomes for all those categories, with no trading experience required.

If you enjoy following a story and having a stake in how it ends, the platform gives you an interactive way to engage with events you're already paying attention to.

Polymarket tends to appeal most to:

• Sports Fans: Trade on everything from the MLB to championship futures and major sporting events.
• News Followers: React to breaking headlines, political developments, and major economic stories as they unfold.
• Data-Driven Users: If you enjoy looking at probabilities, trends, and market sentiment, Polymarket offers plenty to explore.
• Value Seekers: Prices update in real time, allowing users to buy and sell positions as events develop.

Sports On Polymarket Vs Traditional Sportsbook

Polymarket is a peer-to-peer exchange: prices are set by traders, not a bookmaker, so there isn't built-in vig.

Every contract trades between $0 and $1, representing the crowd's estimated probability of an outcome. You post a price, another trader accepts it, and the contract fills.

Here is a quick breakdown of how the two stack up:

Polymarket also operates in states without legal sports betting, including California and Texas, because event contracts fall under CFTC jurisdiction rather than state gaming law.

Check the Best Sportsbook Promos in the U.S. for October 2026

How Sports Markets Actually Work

Polymarket allows users to trade on the probability of an outcome happening. That could be the winner of an MLB regular season game, or hundreds of other sports and current-events markets.

Here's how it works:

• Choose a Market: Select an event you're interested in, like "Will the Dodgers win the World Series" or if the Rams will win the Super Bowl.
• Buy "Yes" or "No" Shares: If you think an outcome will happen, you buy "Yes" shares. If you think it won't happen, you buy "No" shares.
• Trade as Prices Move: Market prices change throughout the day as new information becomes available. Injuries, game results, lineup news, and public sentiment can all influence probabilities.
• Exit Before the Outcome: Unlike a traditional sportsbook wager, you don't have to hold your position until the event ends. You can buy or sell shares at any time while the market remains open.

That's one reason prediction markets have become so popular. They give users the flexibility to react as a series unfolds rather than locking in a prediction before the action begins.

What Sports Are On The Menu?

• NFL
• NBA
• MLB
• NHL
• Soccer (EPL, UCL, La Liga, etc.)
• UFC and boxing
• Formula 1
• Golf
• Tennis
• Esports
• Chess
• And more!

The board turns over with the calendar, and liquidity usually pops around prime-time games and playoff runs.

Here's what's on the national schedule to use your Polymarket bonus credits this week:

Other Events On Polymarket

Sports drive the most attention, but the Polymarket app now offers event contracts across other categories:

• Politics: Trade contracts tied to elections, government policy, and other major political developments.
• Economics: Follow markets related to inflation, interest rates, employment data, and other key economic indicators.
• Technology: Take positions on AI developments, product launches, and other stories shaping the tech industry.
• Culture: Trade contracts tied to TV Shows/Movies, award shows, viral trends, and major cultural events.
• Weather & Temperature: Trade on contracts linked to weather forecasts and temperature-related outcomes.

The underlying mechanics operate identically to the sports markets. You simply purchase Yes or No shares based on your personal conviction.

Contract settlement happens automatically once the real-world event reaches a verified conclusion.

💡Expert tip: Posting competitive limit quotes actually earns you money through the app's liquidity rewards program.

Funding And Wallets

Polymarket US is funded in U.S. dollars via ACH bank transfer, debit card, or Apple Pay. You don't need to set up a crypto wallet; that's the international Polymarket.com platform, which is a separate product.

Once your account is verified, you can fund it using supported payment methods and trade event contracts directly in USD.

Deposits & Withdrawals

Trading Fees

When you're looking for value, every cent counts. Unlike traditional sportsbooks that build the vig into the odds, Polymarket uses a transparent fee model.

Here’s the rule of thumb:

• If you accept an existing price for an immediate trade, you're a "Taker" and may pay a small trading fee.
• If you place a limit order and wait for another user to match it, you're a "Maker"—and maker orders carry a zero fee.

Always check Polymarket's current fee schedule before trading; fees may vary by market and are subject to change.

Taxes

Profits may be taxable. Keep a simple log of deposits, fills, and settlements, and talk to a tax pro about your situation.

Polymarket Liquidity Rewards Program

The Liquidity Rewards Program pays users who keep markets active by posting buy and sell orders. It doesn't depend on whether your predictions are right.

You can earn a share of Polymarket's daily reward pools by posting competitive limit orders in qualifying markets. In general, orders that improve pricing and add liquidity have a better chance of earning rewards.

Polymarket Vs Kalshi

If you've heard about Polymarket, you've probably heard about Kalshi too. The two platforms lead the prediction market space and offer similar ways to trade on real-world outcomes.

That said, they're not exactly the same. Here's a quick comparison to see how they stack up.

Responsible Trading

Responsible trading is also worth considering in prediction markets: Set a budget before your first trade, not after a losing one. Contracts can settle at zero, and a $10 position is worth $0 as easily as $17.

Access depends on your state, so confirm Polymarket is available where you are before you fund an account.

If trading stops being fun, these resources are free and confidential:

• 1-800-MY-RESET: the National Council on Problem Gambling's National Problem Gambling Helpline, by call or text
• 1-800-GAMBLER: also still in service
• ncpgambling.org/chat: NCPG's online chat

Customer Support

Need a hand? Here’s where to get answers fastest on the Polymarket app:

• 👩‍💻 Live chat on app: fastest route for deposit problems, order issues or market resolution questions. Have your account email and the transaction date ready.
• 🆘 Help Center: step-by-step articles on funding, withdrawals, market rules, and account basics.

History Of Polymarket

• 2020 launch: Event trading across sports, elections, and macro prints.
• January 2022 regulatory issue: Polymarket was fined $1.4 million by the Commodity Futures Trading Commission for offering unregistered options and swap contracts, forcing the platform to block U.S. traffic while it pursued a licensed framework to return legally.
• July 2025: Polymarket closed a $112 million acquisition of QCEX, including the CFTC-designated exchange QCX LLC and clearinghouse QC Clearing LLC — the licensed vehicle for its U.S. return.
• October 2025: Intercontinental Exchange (ICE, NYSE parent) said it will invest up to $2B in Polymarket, implying a multi-billion valuation and signaling a push to take event markets mainstream. Polymarket also outlined a licensed derivatives exchange + clearinghouse route for a U.S. return, pending an official launch date.
• November 2025: The CFTC amended QCX LLC's designation order, clearing the way for intermediated trading through the entity now doing business as Polymarket US
• March 19, 2026: MLB named Polymarket its exclusive Official Prediction Market Exchange Partner. The deal gives Polymarket access to MLB marks, logos, and official league data through Sportradar. On the same day, MLB signed a memorandum of understanding with CFTC Chairman Michael Selig to share integrity information. As part of the agreement, certain market types are off limits, including individual pitches, manager decisions, and umpire performance.
• March 2026: Polymarket was in beta testing, but still allowed users to use the invite codes to skip the line and unlock early bonuses.
• May 2026: The Polymarket waitlist is over. Users can register to the Polymarket app with the original invite code or a new promo code like INSIDER

Tips To Get Started On Polymarket

New to prediction markets? Don't overthink it. The best approach is to keep things simple and learn as you go.

• Start with familiar markets: Sports, politics, and major news stories are usually the easiest places to begin because you already have some background knowledge.
• Think in probabilities: Contract prices reflect what the market believes is likely to happen. Understanding those probabilities can help you make smarter decisions.
• Take your time: You don't need to jump into every market. Focus on a few events you know well and build confidence from there.
• Use limit orders when it makes sense: They can help you get a better price and give you more control over your trades.
• Have a plan: It doesn't matter if you're aiming for a quick profit or holding until an event is settled, it's always good to know your strategy before entering a position.
• Stay disciplined: Like any form of trading, it's important to manage your budget and avoid making emotional decisions.

Polymarket FAQs

Does Polymarket Have an Invite Code?

Yes, but it's built for active traders rather than one-time sign-ups. Here's how it works: once your account reaches $10,000 in lifetime trading volume, your referral link starts earning a share of the trading fees the people you refer generate, paid daily in pUSD. That's separate from the INSIDER welcome offer new users claim up front.

Does Polymarket Give You $10?

Right now, by using our exclusive Polymarket invite code INSIDER during registration, new users will receive a $25 trading bonus after making a qualifying first deposit of $10. You may have seen older articles or rumors online about a $10 sign-up drop, but the current welcome offer is actually much stronger.

Do You Have to Place a Trade to Get The $25 Bonus?

No. Once your qualifying $10 deposit is processed with code INSIDER, Polymarket credits the $25 trading bonus automatically. You don't need to place a first trade to unlock it. You'll see the full $35 in trading funds in your balance and can put it toward any eligible market right away.

How Does Trading Work On Polymarket?

You’re in prediction markets buying Yes/No shares against other users. Prices run $0.00–$1.00 and move with news; watch how the market’s average price reacts after injuries, lineup changes, or fresh polling. Post a resting limit (maker) or take the best quote (taker).

What Can I Trade On Polymarket?

A rotating board of sporting events, election outcomes, economic releases, and pop culture storylines. Menus shift with seasonality and market demand.

Is Polymarket Legal In The U.S. Right Now?

Yes. Eligible U.S. users can access the Polymarket app and trade event contracts across sports, politics, economics, technology, culture, and weather markets. Availability varies by state.

What Fees Does Polymarket Charge?

Polymarket US charges a small taker fee when you execute trades immediately against existing market prices. Limit orders placed as a "maker" carry zero trading fees and can earn daily liquidity rebates. Canceled or unfilled orders are never charged.

What Is The Polymarket Liquidity Rewards Program?

The Polymarket Liquidity Rewards Program rewards users who help keep markets active by placing competitive buy and sell orders. Eligible traders can earn a share of Polymarket's daily reward pools, with rewards calculated and posted at midnight UTC. It's an extra benefit for active users who help improve market liquidity and pricing.

How Do I Get Help Fast?

Use the in-app blue chat icon for the quickest reply, or ask in the Discord server. Include the market link, a short fragment of your wallet address, and any transaction hash to speed things up.

Dylan Wilkerson

Dylan Wilkerson has over 5 years of experience reporting and analyzing the sports betting industry for various sites. His portfolio includes work for SportsHandle and Action Network, in addition to VegasInsider. His favorite sports are the NFL, College Football, The PGA Tour, the LIV Tour, and Cricket. Dylan has a broad and deep understanding of various sports-related topics. More from Dylan Wilkerson