Leverage does not directly change trading fees. What determines the fee is the notional value (total position size), not the margin you use.

On Delta Exchange, fees are calculated on the notional value of the position:

Notional Value = Entry Price × Contract Quantity

Leverage only affects how much margin you need to open that position.
If leverage increases and you use it to open a larger position, the notional value increases -and therefore the fee increases.
If leverage increases but your position size (notional value) remains the same, the fee remains unchanged.

Example: ETHUSD at $1800

Assume ETHUSD price = $1800

Case 1: 1 ETH position

Notional Value = 1800 × 1 = $1,800

Whether you use:

• 2x leverage

• 10x leverage

• 20x leverage

If the position size is still 1 ETH, the notional value remains $1,800, so the fee is calculated on $1,800.

Case 2: Increasing leverage and increasing position size

Suppose higher leverage allows you to open 5 ETH instead of 1 ETH.

Notional Value = 1800 × 5 = $9,000

Here, the fee is calculated on $9,000, which is higher because the position size increased,