Polymarket is the world's largest prediction market, with over $1.5 billion in weekly trading volume. You trade on the outcomes of real-world events, elections, Fed decisions, sports, crypto prices, and more — all by using simple yes/no contracts. As of late 2025, it's fully legal for U.S. users, as Polymarket acquired CFTC-licensed exchange QCEX, bringing it under federal oversight.
So, how does Polymarket work? What do beginners need to know about trading event contracts? Don't worry, we've got you covered on all things Polymarket, but first it's important to use our exclusive promo code ACTIONand then Deposit $20 Get $20 Bonus, Use our Code to Skip the Waitlist!
How Polymarket Works
Every market is a yes/no question, and you buy YES or NO shares, priced between $0.00 and $1.00. That price represents the market's implied probability. For example, a YES share at $0.65 means the crowd thinks there's a 65% chance the event happens. Win, and your shares pay out $1.00 each. Lose, and they're worth $0.00.
You're not betting against a house. You're trading with other users who hold the opposite view. Your edge comes from spotting where the market's probability estimate is wrong.
Step 1: Sign Up
Go to polymarket.com and sign up with your email. Polymarket automatically creates a crypto wallet for you. It's important to understand that your funds are non-custodial, meaning Polymarket never holds your money. You'll need to verify your identity with a government-issued ID before depositing or withdrawing.
When creating your wallet, you will need to create and save your private key. | Your private key proves ownership of your wallet. Lose it, and you could permanently lose access to your funds. Store it somewhere secure.
Step 2: Add Funds
Polymarket runs on USDC, a stablecoin pegged 1:1 to the U.S. dollar, so your balance won't swing with crypto volatility. Deposit options: debit/credit card via MoonPay (easiest for beginners), USDC from Coinbase or another exchange, or direct transfer from a crypto wallet using the Polygon network. No minimum deposit; $50–$200 is a reasonable starting point.
Step 3: How Pricing Works
Forget point spreads. Every share is priced between $0.00 and $1.00, representing probability. YES shares at $0.72 mean the market gives the event a 72% chance of happening. NO shares on the same market cost $0.28, the two always sum to $1.00.
Here's how payouts work:
| Scenario | If You're Right | If You're Wrong |
| Buy YES at $0.72 (100 shares = $72) | Shares resolve to $1.00. You profit $28. | Shares resolve to $0.00. You lose $72. |
| Buy NO at $0.28 (100 shares = $28) | Shares resolve to $1.00. You profit $72. | Shares resolve to $0.00. You lose $28 |
Long shots pay more; favorites pay less. Your job is to find where the crowd's probability estimate is wrong.
Step 4: Place Your First Trade
Browse the Markets page by category (politics, sports, crypto, culture) or search for a topic. Start with high-volume markets as they have tighter spreads and more liquidity, making them easier to enter and exit.
- Choose your side: YES or NO.
- Set your price: What you're willing to pay per share.
- Set your quantity: Total cost is price × quantity.
- Hit Buy: Your order fills when someone takes the other side.
Use GTC (Good-Til-Cancelled) to wait for your price, or FOK (Fill-Or-Kill) to execute immediately at the current market price.
You Can Sell Before Your Market Resolves
Unlike online sports betting, you're not locked in. If you buy YES at $0.40 and the market moves to $0.65 after a news development, you can sell immediately and pocket the difference, with no need to wait for the event to happen. You can also cut losses early if things move against you. Track open positions in the Portfolio tab.
Polymarket Fees: What Are They?
Polymarket charges no trading, deposit, or withdrawal fees. The only cost is the spread, or the gap between buy and sell prices. On liquid markets, this is negligible, but on thinner markets it can be wider. Fees usually land within the range of 0.01% – 0.75%. You can find more information on Polymarket's fee schedule here.
Cashing Out on PolyMarket
Hit Withdraw, send USDC to a wallet or exchange, convert to dollars, and transfer to your bank. On-chain transfers complete within minutes; bank transfers take one to three business days.
A quick reminder, every trade is a taxable event. Polymarket doesn't issue tax documents, so be sure to keep your own transaction log and consult a tax professional.
Quick Tips for Polymarket Beginners
- Start small. Spread your first $100 across several markets to learn how things move.
- Read the resolution criteria. Every market has specific rules for how it settles. Make sure to read them before you buy.
- Think in probabilities. Don't just ask "will this happen?" Instead, ask "Is the market mispricing the odds?" That's your edge.
- Remember, you can sell early. Lock in gains when a market moves your way.
The Bottom Line on How Polymarket Works
Polymarket rewards informed thinking. Prices are set by other traders, not a house, which means there's a genuine edge for anyone willing to do their homework. You can get started with $20 in under 30 minutes. Trust us, the learning curve flattens fast once you're in. And remember, new users who utilize our exclusive promo code ACTIONand then Deposit $20 Get $20 Bonus, Use our Code to Skip the Waitlist!
