> For the complete documentation index, see [llms.txt](https://support.backpack.exchange/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.backpack.exchange/exchange/trading/order-types/limit-orders.md).
# Limit Orders
A **Limit Order** allows you to set the maximum price you are willing to pay when buying, or the minimum price you are willing to accept when selling.
### **When to Use?**
* When you want to control the exact entry or exit price.
* Suitable for patient traders waiting for favorable market conditions.
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### **Key Points**
Execution is not guaranteed — the order will only be filled if the market reaches or exceeds your set price.
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### Why Did My Limit Order End Up Being Executed as a Market Order?
* The logic of a limit order is:
* A **buy order** will be executed at a price **≤ your set price**.
* A **sell order** will be executed at a price **≥ your set price**.
* If you do **not** enable the **Post Only** option, the system will match your order against existing orders in the order book immediately, as long as the price condition is satisfied.
* To ensure your order is always placed into the order book as a **Maker** order, you need to check **Post Only**. Otherwise, your order may be executed immediately as a **Taker** order.
**Example:**
* You set a **buy limit order** for BTC/USD at 30,000.
* The current best ask price is 29,900.
* **Result:** The system will execute the order immediately at 29,900 instead of placing it at 30,000 to wait.
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