Prediction markets have exploded in popularity, and Polymarket stands at the forefront of this movement. If you want to understand what is a prediction market and how platforms like Polymarket and Kalshi are reshaping forecasting, you’ve come to the right place. This review digs into the practical side of trading on Polymarket in 2026, from account setup to market depth and the risks you need to know.
Account setup, KYC, and deposits in 2026
Getting started on Polymarket is straightforward. You create an account with an email address and connect a Web3 wallet like MetaMask or Coinbase Wallet. Unlike traditional platforms, Polymarket does not require Know Your Customer (KYC) verification for most users, which speeds up onboarding but may limit access in certain jurisdictions.
Deposits work exclusively through USDC, a stablecoin pegged to the U.S. dollar. You can fund your account by bridging USDC from Ethereum or other chains to Polygon, Polymarket’s Layer 2 network. The process takes a few minutes and incurs minimal gas fees, typically under a dollar in 2026.
USDC deposit via Polygon bridge
The Polygon bridge is your gateway to low-cost trading. You send USDC from your wallet to the Polygon network, and the funds appear in your Polymarket balance almost instantly. This setup keeps transaction costs low and makes frequent trading viable, a major advantage over Ethereum mainnet alternatives.
Markets coverage: politics, sports, crypto, AI
Polymarket offers a wide range of markets across politics, sports, cryptocurrency, and emerging tech like AI. Political markets dominate the platform, covering elections, policy outcomes, and geopolitical events. Sports markets include major leagues and tournaments, while crypto markets let you bet on Bitcoin price levels or DeFi protocol launches.
The platform’s AI category has grown significantly in 2026, with markets on model releases, regulatory decisions, and adoption milestones. This diversity makes Polymarket a hub for collective intelligence forecasting, where traders aggregate information into actionable probabilities.
Fees, spreads, and slippage in practice
Polymarket charges no trading fees, a standout feature compared to traditional betting platforms. You pay only blockchain transaction fees, which remain negligible on Polygon. However, spreads between buy and sell prices can be wide in illiquid markets, effectively acting as a hidden cost.
Slippage occurs when large orders move the market price against you. In popular markets with deep liquidity, slippage is minimal. In niche markets, expect to pay a premium for immediate execution. Understanding how prediction markets work means recognizing these trade-offs between speed and price.
Liquidity depth and order book quality
Liquidity varies dramatically across markets. High-profile political events and major sports games attract substantial volume, with tight spreads and deep order books. You can place large trades without significantly impacting the price. Smaller markets, however, often have thin liquidity, making it hard to enter or exit positions at your desired price.