To address your query about **Binance's "Post Only" order type for BNB**, here's a detailed explanation based on the search results:

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### **1. What is a "Post Only" Order?**

A **Post Only** order is a conditional order type on Binance that ensures your order is added to the order book as a **maker order** (providing liquidity) rather than being executed immediately as a taker order (removing liquidity). This helps users avoid taker fees and instead pay lower maker fees. Key features include:

- **No Immediate Execution**: The order is placed on the order book and remains there until matched.

- **Automatic Cancellation**: If the order cannot be posted (e.g., it would immediately match existing orders), it is canceled to prevent taker fees .

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### **2. How to Use a "Post Only" Order with BNB**

When trading BNB or other cryptocurrencies on Binance:

1. **Select "Limit Order"**: Choose the BNB trading pair (e.g., BNB/USDT).

2. **Check "Post Only"**: Enable this option in the order interface.

3. **Set Price and Quantity**: Specify your desired price and amount of BNB.

4. **Submit**: The order will either be added to the order book or canceled if it cannot be placed as a maker order .

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### **3. Benefits of Using "Post Only" with BNB**

- **Fee Discounts**: Binance offers reduced trading fees (e.g., 25% discount) when paying fees in BNB. Combining this with maker orders (via "Post Only") maximizes cost efficiency .

- **Liquidity Provision**: Adding BNB to the order book supports market stability and earns potential rewards through maker fee rebates.

- **Avoid Slippage**: Ideal for large BNB trades where immediate execution could impact the market price.

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