Order Cost

Order Cost is the total margin needed to open a particular position. This includes the Initial Margin, taker fee to open and taker fee to close. The actual fee charged depends on the order type. Traders can find the order details in <Order Confirmation Window> and <Order Zone>.

 

Various Equations related to Order Cost

$$ \textsf{Order Cost} = \textsf{Initial Margin + 2-way taker fee(Fee to Open + Fee to Close)} $$

\begin{align}&\scriptsize\textsf{Taker fee to open}={{{\textsf{Quantity}\times\textsf{Multiplier}}\over\textsf{Avg. Entry Price*}}\times\textsf{Taker Fee Rate}}\\\tiny\\&\scriptsize\textsf{**Taker fee to close}={{{\textsf{Quantity}\times\textsf{Multiplier}}\over\textsf{Bankruptcy Price based on Order Price***}}\times\textsf{Taker Fee Rate}}\\\tiny\\&\scriptsize\textsf{***Long Position Bankruptcy Price}={{\textsf{Avg. Entry Price}\times\textsf{Leverage}}\over{\textsf{Leverage}+1}}\\\tiny\\&\scriptsize\textsf{***Short Position Bankruptcy Price}={{\textsf{Avg. Entry Price}\times\textsf{Leverage}}\over{\textsf{Leverage}-1}}\end{align} 

 

<Order Cost Example>

David places a buy limit order of 10,000 BTC/USDT contracts at 8,200 USDT, using 10x leverage.

$$ {\small \textsf{Order Cost} = \textsf{0.12195121 + 0.00091463 + 0.00100610}=\textsf{0.12387194 BTC}} $$

\begin{align}&\scriptsize\textsf{Initial Margin}={\textsf{10,000}\over\textsf{8,200}}\times{\textsf{1}\over\textsf{10}}=\textsf{0.12195121 BTC}\\&\scriptsize\textsf{Taker fee to open}={{\textsf{10,000}\over\textsf{8,200}}\times\textsf{0.00075}}=\textsf{0.00091463 BTC}\\&\scriptsize\textsf{Bankruptcy Price}={{\textsf{8,200}\times\textsf{10}}\over{\textsf{10}+\textsf{1}}}=\textsf{7,454.5 USDT}\\&\scriptsize\textsf{Taker fee to close}={{\textsf{10,000}\over\textsf{7,454.5}}\times\textsf{0.00075}}=\textsf{0.00100610 BTC}\end{align}