Polymarket is the world's largest prediction market platform with over $50 billion in lifetime volume. This guide walks you through everything from creating your account to executing your first trade and withdrawing profits.
Visit Polymarket and sign up with your email or connect a crypto wallet (MetaMask, Coinbase Wallet, WalletConnect). Email signup is easiest for beginners — Polymarket creates a wallet for you automatically.
Polymarket uses USDC (a stablecoin pegged to $1) on Polygon network. You can deposit via credit/debit card, bank transfer, or by sending USDC from an exchange. Minimum deposit is typically $5. Card deposits have a ~3% fee; crypto deposits are free.
Browse markets by category: Politics, Crypto, Sports, Pop Culture, Economics, Technology. Use the search bar for specific events. Look for markets with high volume (tighter spreads) and clear resolution criteria.
Click on a market, choose "Yes" or "No," and enter your amount. The price (e.g., $0.65) represents the market's probability estimate (65%). If you buy "Yes" at $0.65 and the event happens, you receive $1.00 per share — a 54% return.
Your open positions show in your portfolio. You can sell anytime at the current market price — you don't need to wait for resolution. Take profits when the price moves in your favor, or cut losses if new information changes your thesis.
Withdraw USDC to your external wallet or back to your bank. Crypto withdrawals are instant; bank withdrawals take 2-5 business days. No withdrawal fees from Polymarket.
| Share Price | Market Probability | Payout if Correct | Your Profit |
|---|---|---|---|
| $0.10 | 10% | $1.00 | +$0.90 (900%) |
| $0.25 | 25% | $1.00 | +$0.75 (300%) |
| $0.50 | 50% | $1.00 | +$0.50 (100%) |
| $0.75 | 75% | $1.00 | +$0.25 (33%) |
| $0.90 | 90% | $1.00 | +$0.10 (11%) |
The key insight: you profit when the market is wrong. If a share trades at $0.30 (30% probability) but you believe the true probability is 60%, buying that share has a positive expected value.
When major news breaks, prediction market prices take 5-30 minutes to fully adjust. If you see a relevant headline before the market moves, you can buy at favorable prices. Follow primary sources (government websites, court filings, official announcements) rather than news aggregators.
When the market panics or gets euphoric, prices overshoot. Buy "No" on events priced at 90%+ when the underlying probability is more like 75-80%. Sell "Yes" positions that spike on hype without fundamental justification.
Sometimes the same event is priced differently across markets. If "Event A" is 60% on Polymarket but 50% on Kalshi, you can potentially exploit the difference. Also look for multi-outcome markets where prices don't sum to 100%.
For events with multiple time-based milestones, trade the relationship between short-term and long-term probabilities. Example: if "Bitcoin above $150K by June" is 30% but "Bitcoin above $150K by December" is 55%, the spread implies the market expects most of the move in H2.
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