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How Does Polymarket Work? A Complete Guide (2026)

Written by Rocco Leone Last updated: May 18, 2026 Published: May 15, 2026 Fact checked by Luke Garrison

Polymarket is the world’s largest prediction market platform, but many people don’t know how Polymarket works. It lets you trade real money on the outcomes of real-world events including elections, economic data, sports, geopolitics, and more. If you’re right when the market settles, you get paid. If you’re wrong, you lose what you put in.

This guide covers everything you need to know: how the mechanics work, how to set up a wallet, how to deposit funds, what fees you’ll pay, and how markets resolve.

How Polymarket Works

Polymarket is a decentralized prediction market built on the Polygon blockchain. Unlike traditional betting platforms, it doesn’t have a house taking a cut on odds. Instead, prices are set by thousands of traders collectively, reflecting the crowd’s real-time probability estimate for any given event.

Every market on Polymarket is a yes/no question. Examples:

  • Will the Fed cut rates at its next meeting?
  • Which party will control the House after the 2026 midterms?
  • Will Bitcoin hit $150K by end of 2026?

You buy shares of the outcome you believe will happen. Each share is priced between $0.01 and $0.99, and that price represents the market’s implied probability. If the event resolves in your favor, each share pays out exactly $1.00. If you’re wrong, they pay $0.00.

Example: You see “Will the Fed cut rates in May?” priced at $0.38. That means the market thinks there’s a 38% chance of a cut. You buy 200 shares at $0.38 each (total: $76). If the Fed cuts rates, you receive $200, which is a profit of $124. If they don’t cut, you lose your $76.

The Underlying Technology

The Polygon blockchain is what makes Polymarket work. It’s a fast and low-cost Layer 2 network built on top of Ethereum. The platform uses USDC (USD Coin) as its exclusive currency, which is a stablecoin pegged 1:1 to the US dollar. This means your balance doesn’t fluctuate with crypto volatility; $100 in your Polymarket wallet is always worth $100.

All trades are executed via smart contracts, meaning self-executing code on the blockchain that automatically handles custody, settlement, and payouts without human intermediaries. This provides transparency (every trade is publicly verifiable on-chain) and removes counterparty risk.

For gas fees (the small cost of executing transactions on Polygon), you’ll need a tiny amount of MATIC (Polygon’s native token) in your wallet. Practically speaking, $1–2 worth of MATIC is enough to cover hundreds of trades.

Setting Up Your Wallet

Because Polymarket is a Web3 platform, your wallet is your account. There are two main paths depending on your crypto experience level.

Option 1: Email Sign-Up (Recommended for Beginners)

  1. Go to polymarket.com and click “Sign Up”
  2. Enter your email address and Polymarket will send you a “magic link”
  3. Click the link to instantly create your account and an embedded smart wallet
  4. No browser extension, no seed phrase management — your wallet is managed for you

This is the easiest path. You skip all blockchain complexity and can start depositing funds immediately.

Option 2: Connect a Web3 Wallet (For Crypto-Native Users)

  1. Install MetaMask (browser extension) or use Coinbase Wallet
  2. Set up your wallet and securely store your recovery phrase
  3. Switch MetaMask to the Polygon network (Polymarket will prompt you to do this automatically when you connect)
  4. Go to polymarket.com and click “Connect Wallet”

With this method, you maintain full custody of your funds. For large positions, consider using a hardware wallet (Ledger, Trezor) for maximum security.

Security Tip: Never connect a wallet to Polymarket that’s linked to your real identity or contains funds beyond what you intend to trade. Your on-chain activity is publicly visible.

How to Deposit Funds

Polymarket only accepts USDC on the Polygon network. Here are the three main deposit methods, ranked from cheapest to most convenient.

Method 1: Direct USDC Transfer (Cheapest)

  1. Buy USDC on an exchange like Coinbase, Binance, or Kraken
  2. When withdrawing, select Polygon as the network since sending on Ethereum mainnet will cause bridging delays or require recovery)
  3. In your Polymarket account, go to Deposit and copy your Polygon wallet address
  4. Paste that address into your exchange’s withdrawal form and send

Polygon gas fees are fractions of a cent, making this essentially free beyond any exchange withdrawal fee. Coinbase charges around $0.01–$0.10 for Polygon USDC withdrawals; Crypto.com charges a flat $0.08.

Warning: If you accidentally send USDC over the Ethereum mainnet instead of Polygon, the funds won’t appear in your Polymarket balance. They can be recovered, but it’s a hassle. Always double-check the network.

Method 2: Deposit from Coinbase (Moderate Fees)

Polymarket has a native Coinbase integration that walks you through the transfer process step by step. This is a good middle ground with slightly higher fees than a direct transfer, but a more guided experience.

Method 3: Buy with Card via MoonPay (Highest Fees, Fastest for Newcomers)

If you have no crypto at all, you can buy USDC directly on Polymarket using a debit or credit card through MoonPay. This requires identity verification (KYC) and comes with card processing fees (typically 2–4% of the transaction). It’s the most expensive option but requires no prior crypto setup.

What If You Have ETH or Bitcoin?

Polymarket only accepts USDC. If you hold ETH or BTC, sell it for USDC on a centralized exchange first, then withdraw the USDC to Polygon. Alternatively, use a DEX like Uniswap on Polygon to swap.

Fees on Polymarket

Polymarket’s fee structure is notably lean compared to traditional prediction markets or betting sites.

  • Trading Fees: Polymarket does not charge a platform fee for buying or selling shares. There is no spread or commission taken by Polymarket on trades.
  • Deposit Fees: No fee from Polymarket’s side. Your only cost is whatever your exchange charges to withdraw USDC, plus negligible Polygon gas.
  • Withdrawal Fees: No fee from Polymarket. Same Polygon gas applies (fractions of a cent).
  • Relayer Fee: (Ethereum mainnet deposits only): If you deposit USDC via the Ethereum network rather than Polygon, a relayer fee applies, which is either $3 plus the Ethereum gas fee, or 0.3% of the deposit amount, whichever is higher. This is why depositing via Polygon is strongly recommended.
  • Comparison Context: Kalshi charges a variable fee formula on each trade. PredictIt takes a 10% cut of profits. Polymarket’s near-zero fee structure is a major competitive advantage for active traders.

How Polymarket Works: Placing a Trade

Once your wallet is funded:

  1. Browse markets at polymarket.com or search for a specific topic.
  2. Click on any market to see the current odds, trading volume, and resolution criteria.
  3. Choose your outcome. For a binary market, pick Yes or No; for multi-outcome markets (e.g., “2026 World Cup Winner”), select a specific team or candidate.
  4. Enter the dollar amount you want to spend.
  5. Review your order and confirm. The transaction is then executed on Polygon.

You can also sell your shares before resolution to lock in a profit or cut a loss if your view changes. Shares trade like a market, so you’ll always be able to exit at the current market price as long as there’s liquidity.

How Markets Resolve

When the real-world event concludes, Polymarket settles the market:

  1. Oracles pull in off-chain data from trusted sources (official government data, credible news outlets, verified results).
  2. The Market Integrity Committee oversees edge cases, disputed outcomes, or ambiguous resolution criteria.
  3. Winning shares automatically pay out $1.00 each via smart contract directly to your wallet.
  4. Losing shares pay out $0.00.

Resolution typically happens within hours to a few days of an event concluding. The exact resolution rules for each market are spelled out clearly in the market description. As such, always read these before trading, as they define precisely what counts as a “Yes” outcome.

US Access and Legal Status

Polymarket acquired CFTC-licensed exchange QCEX in late 2025 for $112 million, bringing its US operations under federal regulatory oversight. US users can now access the platform (previously US residents were blocked), though access requires identity verification (KYC) under CFTC regulations (often a government-issued ID and selfie).

Polymarket is currently blocked or restricted in France, Belgium, Singapore, Australia, Thailand, Taiwan, Portugal, Hungary, and Poland due to local gambling regulations. Always check your local laws before depositing funds.

Polymarket Key Terms Glossary

  • USDC (USD Coin): Stablecoin used for all Polymarket transactions, pegged 1:1 to the US dollar.
  • Polygon: Blockchain network Polymarket runs on; fast and low-cost.
  • Yes/No Shares: Tradable tokens representing each possible outcome in a market.
  • Resolution: When a market settles and winning shares pay out $1.00 each.
  • Smart Contract: Self-executing blockchain code that handles trades and payouts automatically.
  • Oracle: Data feed that brings real-world information onto the blockchain for market resolution.
  • MATIC: Polygon’s native token, needed in tiny amounts to pay for on-chain gas fees.
  • KYC (Know Your Customer): Identity verification required for US traders.

Common Mistakes to Avoid

  • Sending USDC On The Wrong Network: Always confirm you’re withdrawing on Polygon, not Ethereum mainnet. This is the most common beginner error.
  • Not Reading Resolution Rules: “Will X happen?” can resolve on a very specific definition. If the market resolves based on a particular data source or date, that’s what matters.
  • Trading Illiquid Markets: Markets with low volume can have wide spreads between buy and sell prices. Stick to high-volume markets until you understand how liquidity affects your entry and exit prices.
  • Ignoring MoonPay Fees: Buying with a credit card is convenient but 2–4% fees compound quickly. Once you’re a regular user, set up a Coinbase or Binance account for cheaper deposits.

How Polymarket Works FAQs

Do I need to understand crypto to use Polymarket?

No, having a solid understanding of crypto is not necessary to use Polymarket. If you sign up with email and use MoonPay for deposits, you barely interact with blockchain concepts at all. That said, understanding Polygon, USDC, and wallet security becomes important as you trade larger amounts.

Is there a minimum deposit?

No, there is no minimum deposit. Traders typically deposit at least $10–20 to place meaningful trades, since shares are priced from 1-99 cents.

How quickly do funds arrive?

Polygon deposits from an exchange typically process in under 5 minutes, whereas Ethereum mainnet deposits take longer due to bridging.

Can I trade anonymously?

Yes, Polymarket historically didn’t require KYC outside the United States. US users now require identity verification. Non-US users can still sign up with email without full identity verification, though Polymarket geo-blocks several jurisdictions.

What happens if Polymarket goes down?

Since your funds are held in smart contracts on the Polygon blockchain and not in a Polymarket database, you aren’t directly at risk if Polymarket’s servers go offline. That said, you can always interact with the smart contracts directly.