alt Hacker NewsThere are no fees on Polymarket. Not sure about others.
Replies
barchar • yesterday at 10:52 PM
There is a fee implicit in the market spread. It's formed out of the time value of money w.r.t. the cost of NOT trading as well as the adverse selection faced by those with standing offers.
Increased insider trading will increase spreads.
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kasey_junk • yesterday at 10:49 PM
Depends on the event:
> There are no fees on Polymarket
"Currently, small fees apply to Crypto and Sports markets.
Starting March 30, 2026, this will expand to include other categories like Finance, Politics, Economics, Culture, Weather, and Tech" [1].
More critically, Polymarket doesn't pay interest on deposits. (Kalshi does.)
[1] https://help.polymarket.com/en/articles/13364478-trading-fee...