> For the complete documentation index, see [llms.txt](https://docs.bullpen.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bullpen.fi/trading/order-types/time-in-force.md).

# Time-in-Force Options

Before diving into specific order types, understand the time-in-force options that control how long your order stays active:

| TIF     | Name                | Behavior                                                                                                                                    |
| ------- | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| **GTC** | Good 'Til Canceled  | Stays on the order book until filled or you cancel it. Best for setting price targets you're willing to wait for.                           |
| **GTD** | Good 'Til Date      | Active until a specified date/time (UTC), then auto-cancels if unfilled. Useful for time-bound strategies.                                  |
| **IOC** | Immediate or Cancel | Fills whatever it can immediately at your price or better; cancels the rest. Good for getting partial fills without leaving resting orders. |
| **FOK** | Fill or Kill        | Must fill the entire order immediately or cancel completely. No partial fills. Use when you need all-or-nothing execution.                  |
| **ALO** | Add Liquidity Only  | Cancels if it would execute immediately; ensures you're always the maker (earning rebates instead of paying fees).                          |

## When to Use Each

* **GTC**: Default choice for limit orders when you're patient
* **GTD**: Event-driven trades (e.g., "buy before earnings if price hits X")
* **IOC**: You want immediate execution but won't chase price
* **FOK**: Large orders where partial fills create unwanted exposure
* **ALO**: Market making or when you specifically want maker rebates


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