Prediction market comparison

Polymarket US vs Kalshi

Both products serve U.S. customers, but they suit different priorities. Compare the account experience, available contracts and order costs before choosing where to trade.

Quick answer

Choose by account fit and access

Choose by product structure, not brand familiarity. Polymarket US is the direct domestic Polymarket option; Kalshi is the stronger fit for users who prioritize a regulated exchange structure and established USD funding paths.

Polymarket US

Best for: Users who specifically want the domestic Polymarket product

The U.S.-only Polymarket product is separate from Polymarket.com, with separate accounts and eligibility requirements.

$50 bonus with $10 deposit. Use code COIN.

Full review Visit Polymarket US

Kalshi

Best for: Users who want a regulated event-contract exchange with USD funding

A U.S.-regulated event market with broad public-event coverage.

$25 bonus when you trade $25. Use code COIN1.

Get promo code Visit Kalshi

Side-by-side details

Start with availability, then compare funding, fees and the markets you actually want to trade.

Compare	Polymarket US	Kalshi
Best fit	Users who specifically want the domestic Polymarket product	Users who want a regulated event-contract exchange with USD funding
Platform type	U.S. prediction market app	Regulated event-contract exchange
Availability	United States via the separate Polymarket US app	U.S. and eligible international countries
App access	Separate U.S. app	Web and mobile account
Funding	Check app funding options	USD funding
Fee structure	Check the app order preview for current contract pricing	Transaction fees vary by market and expected contract earnings
Market coverage	Sports, Elections, Macro, Crypto, AI	Sports, Elections, Macro, Crypto, AI

Choose Polymarket US if

+You want the separate Polymarket product built for U.S. customers.
+Sports, elections, crypto and technology markets are your main interests.
+You have confirmed app and state eligibility for the contracts you want.

Polymarket US is separate from Polymarket.com, and its accounts, access and product terms should be checked independently.

Choose Kalshi if

+You prefer a specialist regulated event-contract exchange.
+You want documented USD funding options and formal market rules.
+You are comfortable checking a market-specific fee before each order.

Kalshi fees and available contracts can vary by market, event and jurisdiction.

Considering another provider? Compare Polymarket alternatives and Kalshi alternatives, then check the worked fee comparison for the cost of entering and exiting a trade.