What does a Polymarket trade cost?
Polymarket and Polymarket US are separate exchanges with separate fee schedules.
Polymarket, 100 shares at 50¢
| Category | Rate | Fee |
|---|---|---|
| Crypto | 7.00% | $1.75 |
| Sports | 5% | $1.25 |
| Politics | 4% | $1.00 |
| Geopolitics | 0% | Free |
Polymarket US, 100 shares at 50¢
| When | Rate | Fee |
|---|---|---|
| Before Sep 17, 2026 | 6% | $1.50 |
| Sep 17, 2026 onward | 6.95% | $1.74 |
Kalshi fees →Kalshi vs Polymarket →Arbitrage calculator →
Informational only, not trading advice. Confirm rates against your own fills.
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The terminal prices every market on both Polymarket exchanges and Kalshi on one line, fees included.
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