Profit and Loss Calculation in USDT Margin Accounts

Available Balance:
The available balance in USDT margin Futures is calculated as follows:
Available balance = Account balance + Realized P&L of all Futures + Unrealized P&L of all contracts

Unrealized P&L:
This refers to the profit or loss of the positions currently held by the user, which changes with the mark price. Unrealized P&L is the profit or loss of all positions currently held in U-based Futures under cross margin mode.

Long position unrealized P&L = (Mark price - average entry price) * position quantity
Short position unrealized P&L = (average entry price - Mark price) * position quantity

Realized P&L:
This refers to the profit or loss generated by closed positions, transaction fees, and funding fees received or paid during the period. Realized P&L cannot be withdrawn from the USDT margin account until settlement.
Realized P&L = (Closing transaction price - average entry price) * transaction quantity

Average Entry Price:
The average entry price is the price used by the system to calculate the user's unrealized P&L and realized P&L. This price is adjusted accordingly after each contract settlement or additional position, but changes in the average entry price do not affect the user's actual profits and losses. When closing a position, the cost is calculated using the moving average method. That is, when closing a position, the system calculates the profit or loss based on the average holding price, rather than distinguishing which opening price the position was opened at.