# Order Types

Byreal Perp supports the following order types:

## Market Order

Executes immediately at the best available price. Use for fast entry/exit.

* Guaranteed fill
* May experience slippage in thin markets or during high volatility

## Limit Order

Executes only at your specified price or better. Three time-in-force options:

* **Good-Til-Cancelled (GTC):** Stays open until filled or manually canceled
* **Immediate-or-Cancel (IOC):** Fills what it can immediately, cancels the rest
* **Post-Only (ALO):** Ensures your order is added to the book as a maker order; rejected if it would match immediately (useful for avoiding taker fees)

## Take Profit / Stop Loss (TP/SL)

Automatically closes your position at a target profit or loss level.

* **Take Profit** — Triggers when the mark price reaches your target profit level
* **Stop Loss** — Triggers when the mark price reaches your maximum loss level

Once triggered, TP/SLs execute as a market order. They can be set at order creation or added to an existing position.

## TP/SL Combo

Set both Take Profit and Stop Loss simultaneously when opening a position. This is the recommended approach for risk management.

## Reduce-Only Order

An order that can only reduce an existing position, never increase it or open a new one. Useful for setting exit orders without accidentally opening a position in the opposite direction.