Polymarket Sports raises the Taker Fees parameter from 0.03 to 0.05, with a nearly 67% increase

Based on the fee formulas for each prediction market or segment:
- Predict Fun = 0.02 × min(p, 1-p)
- Limitless = 0.03 × min(p, 1-p)
- Polymarket Sports = 0.03 × p × (1-p) （will later be 0.05 × p × (1-p) ）
- Polymarket Politics/Finance/Tech = 0.04 × p × (1-p)
- Polymarket Culture = 0.05 × p × (1-p)
- Polymarket Crypto = 0.072 × p × (1-p)
- Kalshi general = 0.07 × p × (1-p) , and there is cent-level rounding
Around 50c (Figure 1), Predict Fun’s raw fee is $0.0100 per share; Limitless is $0.0150 per share; Polymarket Sports under the old parameters is $0.0075 per share, and under the new parameters it will become $0.0125 per share; Polymarket Culture is $0.0125 per share, and Polymarket Crypto is $0.0180 per share. Kalshi general per the formula is $0.0175 per share, but it’s affected by minimum billing/rounding up
As with more common imbalanced prices like 25c/75c (Figure 2), Predict Fun’s advantage becomes even more evident: since fees follow min(p, 1-p), the cost reduction at tail prices is more directly reflected
At 10c/90c (Figure 3), Predict Fun’s effective fee is significantly lower than most platforms that use the higher-parameter p×(1-p) setup. Predict Fun’s raw fee is about $0.0020 per share; Polymarket Sports under the new parameter is about $0.0045 per share; Polymarket Culture is about $0.0045 per share; Polymarket Crypto is about $0.00648 per share
Under PM Sports’ new fee rate, for active traders and high-frequency sports market users, the advantage of low-fee platforms will be more immediately apparent. Prediction markets ultimately compete on price discovery and trading efficiency. The lower the fee, the less marginal upside users get consumed when rebalancing, arbitraging, market making, and placing high-frequency bets
At present, across the entire price range, Predict Fun’s fee rate is the lowest. The advantage of being in the lowest-fee tier is expected to be further amplified