Polymarket vs Kalshi: Regulated vs Crypto Prediction Markets
The two largest prediction markets in the world have almost nothing in common under the hood. Here's how to choose.
Polymarket and Kalshi are the two most-watched prediction markets in 2026. Both let you trade binary contracts on real-world events, both saw record volume during the 2024 US election, and both regularly appear in mainstream coverage of election odds. But they are built on opposite philosophies.
Regulation
Kalshi is a CFTC-regulated Designated Contract Market (DCM). Every contract it lists has been formally certified or approved by the regulator. Customer funds are held in segregated US bank accounts. Kalshi is legal in all 50 US states.
Polymarket is unregulated in the US. It settled with the CFTC in 2022 and now blocks US users. The platform operates from offshore entities; contracts settle on-chain in USDC.
Deposit and withdrawal
Kalshi accepts ACH, debit, and wire transfers in US dollars. Most deposits are instant; withdrawals settle in 1–3 business days.
Polymarket requires USDC on Polygon. You'll typically bridge from Ethereum or Solana, or buy USDC directly inside Polymarket via Moonpay. There are no fiat rails.
Contract variety
Polymarket lists thousands of markets — politics, sports, crypto prices, pop culture, weather, even "will X tweet Y by date Z" novelty markets. Many of these would never get CFTC approval.
Kalshi is more curated. Categories include economics, climate, elections, sports, and entertainment. Each contract requires regulatory approval, so the list grows more slowly but is more rigorous.
Which should you use?
If you're in the US and want a legal, regulated venue with FDIC-backed deposits, use Kalshi. If you're outside the US, want the widest market selection, and don't mind crypto rails, Polymarket has more liquidity. Many sophisticated traders use both.