# Margin Account Parameters

## Definitions

#### Account Equity 

This is the current value of your account, including the current market value of all open positions and your USDC equity.

$$
equity = balance+unrealizedPnL + unpaidFunding
$$

#### Buying Power

Your buying power is the amount of capital you are able to deploy after factoring in the leverage offering for the market you are trading. 

$$
buyingPower = freeCollateral \* \frac{markPrice}{initialMarginPerLot}
$$

#### Free Collateral

The amount of free collateral your account has that is not being used to collateralise other positions or open orders.

$$
freeCollateral = balance + unrealizedPnL + unpaidFunding - initialMargin
$$

#### Margin Usage

The percentage of equity you have used to collateralise positions. 

$$
marginUsage = \frac{maintenanceMargin}{equity}
$$

#### Current Account Leverage

The overall leverage ratio of your account. Your account leverage is equal to the value of all open positions divided by your account equity. 

$$
leverage = equity \* \sum{positions}
$$

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