> For the complete documentation index, see [llms.txt](https://wiki-en-macos.tiger.trade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki-en-macos.tiger.trade/other/faq/trading/how-p-and-l-and-roe-are-calculated.md).
# How P\&L and ROE% are calculated?
### PNL must be calculated based on the formula
**Long position**
Unrealized PNL = position size \* direction of order \* ( **best bid price** - entry price)
**Short position**
Unrealized PNL = position size \* direction of order \* (**best ask price** - entry price)
### ROE% must be calculated based on the formula
**Long position**
ROE% = Unrealized PNL in USDT / entry margin = ( ( **best bid price** - entry Price ) \* direction of order \* size ) / (position\_amount \* contract\_multiplier \* mark\_price\* IMR）
**Short position**
ROE% = Unrealized PNL in USDT / entry margin = ( ( **best ask price** - entry Price ) \* direction of order \* size ) / (position\_amount \* contract\_multiplier \* mark\_price\* IMR)
In the settings, you can choose what to show by default: PNL or ROE.
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