Introduction
Post-only orders on Bitcoin futures let traders ensure their orders pay the maker fee while avoiding accidental taker fills. Professional traders use this order type to earn rebates instead of paying fees on large positions. Understanding when to deploy post-only orders improves your trading economics significantly. The choice depends on your position size, market conditions, and fee structure.
Key Takeaways
Post-only orders guarantee maker rebates but may not execute if the market moves away. This order type suits traders prioritizing fee savings over immediate execution. BitMEX and Binance Futures offer post-only as standard order options. The strategy works best in liquid markets with tight bid-ask spreads. Limit orders already provide similar functionality on many platforms.
What Are Post-Only Orders?
Post-only orders match against existing orders only if the order would pay the maker fee. The exchange checks the order book before placing your order. If your price would cross the spread and take liquidity, the order posts to the book without filling. According to Investopedia, maker-taker fee models incentivize liquidity provision through rebates.
Why Post-Only Orders Matter
Maker rebates typically range from 0.01% to 0.02% per trade, while taker fees often reach 0.04% to 0.05%. High-frequency traders executing hundreds of daily trades accumulate substantial fee savings. Large institutional positions benefit most from consistent maker rebates. Retail traders with infrequent trades see minimal impact from fee differences.
How Post-Only Orders Work
The execution logic follows a clear decision tree:
Order Received → Check Current Book
↓
Price Inside Spread?
↓ Yes ↓ No
Post to Book (Maker) Reject/Cancel (No Fill)
↓
Wait for Matching Return Unfilled
The formula determines fee status:
Effective Fee = (Order Price – Best Opposite Price) × Position Size × Fee Rate
When your price matches or improves the best bid/ask, you pay the maker rate. When your price crosses the spread, the order posts without execution at the original price level.
Used in Practice
Scalpers placing multiple small orders throughout the day benefit from consistent maker rebates. Arbitrage traders between spot and futures markets use post-only to lock in spreads without overpaying fees. Portfolio managers building positions gradually prefer post-only to minimize transaction costs. Momentum traders needing quick fills should avoid post-only orders entirely.
Risks and Limitations
Post-only orders may never execute in fast-moving markets. Slippage on large orders can exceed the maker rebate savings. Thinly traded contract months may not have sufficient liquidity for reliable maker fills. Some exchanges charge cancellation fees for frequent post-only orders that never fill. Volatility spikes cause post-only orders to sit unfilled while prices move away.
Post-Only Orders vs. Standard Limit Orders
Limit orders execute immediately when prices match, paying taker fees. Post-only orders guarantee maker status but may not fill at all. Time-in-force settings work differently with each order type. Some platforms combine both features with “post-only or cancel” options. The choice depends on execution urgency versus fee optimization.
What to Watch
Monitor your fill rates after switching to post-only orders. Compare actual fees paid against estimated savings from rebates. Track market depth changes during your typical trading hours. Watch for exchange policy changes on maker-taker fee structures. Review your order cancellation frequency to avoid potential penalties.
Frequently Asked Questions
Do all futures exchanges offer post-only orders?
Most major derivatives platforms including Binance Futures, Bybit, and Deribit support post-only orders. Some brokers bundle this feature within advanced order panels.
Can post-only orders be partially filled?
Yes, partial fills occur when your order size exceeds the available liquidity at your price level. Each partial fill maintains maker fee status.
What happens if the market gaps through my post-only price?
Your order remains posted at the original price. It will only match if the market retraces to your level. No automatic price adjustment occurs.
Are post-only orders suitable for day trading?
Day traders prioritizing speed should use standard limit or market orders. Post-only suits traders with patience and sufficient capital to wait for desired entry prices.
Do maker rebates apply to all post-only fills?
Yes, every executed post-only order receives the maker rebate rate. However, unfilled orders generate no fees but also no rebates.
Can I set post-only orders with stop-loss conditions?
Conditional post-only orders exist on some platforms. These combine stop triggers with post-only execution logic, though functionality varies by exchange.
How do exchanges detect post-only order manipulation?
Exchanges analyze order patterns to identify quote stuffing. Frequent post-only cancellations may violate fee policies or trading rules.
Mike Rodriguez 作者
Crypto交易员 | 技术分析专家 | 社区KOL
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