Kalshi vs Polymarket: Which Should You Use?
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Kalshi and Polymarket are the two giants of prediction markets, but they are built for different users. Kalshi is the US-regulated, plain-dollar exchange; Polymarket is the crypto-native one with the deepest, widest markets in the world.
Kalshi: regulated and dollar-based
Kalshi is a US-regulated prediction-market exchange — the CFTC granted KalshiEX designated contract market status in 2020. It runs in plain dollars, covers a huge catalogue of politics, economics, weather and sports, and is the usual default for US traders who want regulation and simplicity. Read the full breakdown in our Kalshi review.
Polymarket: crypto-native and deep
Polymarket historically operated as a crypto-based international platform, settled in USDC. Its own documentation now separates Polymarket International (crypto, with US access restrictions) from Polymarket US, a fiat-based, CFTC-regulated offering. For liquidity and sheer market breadth, Polymarket is unmatched — see our Polymarket review.
Pick Kalshi if…
- You want a US-regulated, dollar-based exchange
- You’d rather not touch crypto
- You value a broad, beginner-friendly catalogue
Pick Polymarket if…
- You want the deepest liquidity and widest markets
- You’re comfortable funding with USDC
- You trade global politics and big events
The practical bottom line
Always check current terms before signing up, especially in the US, where Polymarket International and Polymarket US are separate products. If neither fits — wrong state, no crypto, or you want a bonus — our guide to the best Kalshi and Polymarket alternatives covers eight more platforms.