# FAQ

## Trading

#### Q: How do I post collateral?

A: SakePerp.fi is running on BSC mainnet. All margin is posted in BUSD in your wallet. \


#### Q: Why can't I open a new position after closing one?

A: There is a 5-minute interval to avoid front-running. \


#### Q: Why does my leverage change?

A: The unrealized profit will be counted in the net position which means less leverage. \


#### Q: How can I set my take profit and stop loss alert?

A: Users can set the take profit and stop loss alert on SakePerp.fi. Since SakePerp is powered by vAMM+Oracle price discovery mechanism, the order book is not supported.\


#### Q: Why can't I remove my margin?

A: If your margin rate is below the initial margin rate, you can’t remove margin anymore. The initial margin rate is 10% for a 10x trading pair.



#### Q: What are the fees charged by SakePerp.fi when trading?

A: Refer to the [in-system charge](https://sakeperp.gitbook.io/sakeperp/protocol-overview/in-system-charges).



## Market Makers

#### Q: What’s the incentive to provide liquidity?

A: The liquidity providers are called Market Makers (MMs) in the SakePerp system.

* Earn 50% transaction fees of SakePerp
* System funding fees
* Farm extra SAKE with the MM pool LP tokens

#### Q: What is the max retracement?

A: The max loss of the whole pool is 20%. Since each MM joined the pool at different times, MMs’ max loss can be different. \


#### Q: Why does the price of the MM LP token change?

A:&#x20;

$$
LP Token Price = \frac {Total Value in the MM pool + unrealised PnL} {Total Number of LP tokens}
$$

The Total Value of the LP pool consists of the liquidity added by the user + a share of the handling fee + a share of the funding fee (which may be negative) + a share of the overnight fee.\


#### Q: What’s the max loss for MM?

A: The max loss of the MM pool is 20%. The max loss for each MM may be different, because every MM has a different entry point. \
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