Polymarket vs Betfair: Which Is Better for Prediction Trading?

Polymarket and Betfair are both peer-to-peer prediction markets where you trade against other participants rather than a bookmaker. In both cases prices reflect collective wisdom about the probability of future events, and both platforms allow you to take both sides of a position (buy or sell).

But beyond that shared structure, the two platforms are deeply different in their design philosophy, available markets, geographic restrictions, and fee structure.

Betfair processes over $50 million in betting volume on major football matches and horse races. For sports-adjacent predictions — match winners, outright tournament winners, player awards — Betfair's liquidity is orders of magnitude greater than Polymarket's.

Polymarket is unrivaled for political, crypto, macro, and geopolitical prediction markets. A U.S. presidential election market on Polymarket routinely processes $500M+ in volume. Betfair's equivalent political markets are far thinner.

The rule of thumb: if you're predicting a sports outcome, Betfair has better prices. If you're predicting a news event, Polymarket will have better liquidity and tighter spreads.

Betfair charges a commission on net winnings — typically 5-7% of profits, with lower rates for high-volume traders. This is applied to each settled market.

Polymarket doesn't charge trading fees on most markets. Instead, liquidity providers earn the spread between buy and sell prices. For retail traders, this means Polymarket's effective cost per trade is the spread rather than an explicit commission.

For high-frequency, small-margin trading, Betfair's commission structure can be costly. For occasional larger position trades, Polymarket's spread-based model often works out cheaper.

Betfair requires full identity verification and is unavailable in the United States and several other jurisdictions. As a licensed gambling operator in multiple countries, it operates under strict regulatory frameworks.

Polymarket operates as a decentralized prediction market and requires only a crypto wallet for most functions — though U.S. users are technically prohibited by its terms of service. The practical enforcement varies, but Polymarket is more globally accessible.

PaperPoly has no restrictions at all — it's a paper trading simulator using virtual money, so anyone can practice Polymarket-style prediction trading with zero restrictions and zero financial risk.

Choose Betfair if: You primarily trade sports markets, you're based in the UK or Europe, you prefer a regulated environment, and you're comfortable with the commission structure.

Choose Polymarket if: You trade political, crypto, or macro events, you're comfortable with crypto/DeFi infrastructure, and you want access to unique event markets unavailable on Betfair.

Use PaperPoly first if: You want to practice prediction market trading before risking real money. PaperPoly mirrors live Polymarket markets with $1,000 in virtual capital — it's the fastest way to build skill without financial risk.