Polymarket Market Making Bot: Earn Maker Rebates (2026)
Set up a market making bot on Polymarket that provides liquidity, earns maker rebates, and profits from the bid-ask spread.
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What Is Market Making on Polymarket?
Market making means posting both buy and sell orders on a market, profiting from the bid-ask spread. You buy at the bid price and sell at the ask price, capturing the difference as profit.
On Polymarket, market makers also earn maker rebates on crypto rolling markets. This means you get paid to provide liquidity, on top of spread profits.
Setting Up a Market Making Bot
PredictEngine supports market making bot configuration. Set your target spread width (e.g., 2-5 cents), order size, and which markets to make. The bot continuously posts and adjusts orders on both sides of the book.
Start with high-volume crypto rolling markets (BTC, ETH 5-minute and 15-minute) where there is steady order flow. These markets have the best liquidity and most consistent maker rebates.
Managing Inventory Risk
The main risk in market making is inventory risk — accumulating too many shares on one side when the market moves directionally. If you are long YES and the market drops, your inventory loses value.
Mitigate by: keeping tight position limits, widening spreads during volatile periods, hedging across related markets, and stopping market making near resolution when prices become binary.
Expected Returns
Market making returns depend on volume, spread width, and volatility. On active crypto markets, expect 0.5-2% daily returns on deployed capital in optimal conditions.
Returns are not risk-free. Inventory losses during strong directional moves can offset spread profits. Consistent profitability requires good risk management and market selection.
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Frequently Asked Questions
How much capital do I need for market making?
Market making benefits from larger capital ($500+) since you need to post orders on both sides. Start smaller on a single market to learn.
Are maker rebates significant?
Yes. Polymarket pays rebates on crypto rolling markets for maker orders. Combined with spread capture, rebates meaningfully boost returns.
Can beginners do market making?
Market making is more advanced than directional trading. We recommend starting with simpler strategies and trying market making after gaining experience.
What happens near market resolution?
Stop market making close to resolution. Prices become binary (near 0 or 1) and the spread is not worth the inventory risk.