Isolated positions are backed by a fixed amount of assigned collateral. That amount can be adjusted at any time while the position is open.

Margin adjustment applies to isolated positions only. Cross positions are not individually adjustable as they draw on the full portfolio balance rather than an isolated, protected amount. Collateral for cross positions is managed at account level through deposits, withdrawals, and reducing/closing positions.

Margin is only adjustable on a position set to isolated. The margin mode toggle is located at the top of the order entry panel, beside the leverage selector, and defaults to Cross.

Margin mode cannot be changed while an open position or open order exists in the market. If the toggle is unavailable, close any open position and cancel any open orders in that market first.

Once a position is open, its assigned margin can be adjusted from the Positions tab.

The Adjust Margin window displays the current margin assigned to the position and the amount available to add or reduce.

Select Add Margin, enter an amount up to the Available to Add figure and confirm.

The collateral is drawn from your cross margin balance. Review MM Usage in the portfolio panel before adding a material amount, particularly if the cross book is already close to its MM Usage threshold.

Select Reduce Margin, enter an amount up to the Available to Reduce figure and confirm.

Reducing collateral returns it to your cross margin balance, where it again supports your cross positions.

The ‘Available to Reduce’ figure may be lower than the position's current margin because two components cannot be withdrawn: the position's unrealized PnL, and the collateral held against its Maintenance Margin requirement. Only the collateral in excess of these can be returned to the cross balance.

Adjusting margin changes a position's risk without changing its market exposure. Position size, entry price, and exposure remain unaffected; only the assigned collateral, and with it the liquidation price.

This supports two uses: Adding margin defends a position under pressure by moving its liquidation price further away without increasing position size. Reducing margin frees up collateral that a position no longer requires back to the cross balance, where it can support other open positions.

For related detail, see [What is Isolated Margin?].

Use the margin mode toggle at the top of the order entry panel, beside the leverage selector, before opening the position. The mode cannot be changed while a position or open order exists in that market.

Margin adjustment applies to isolated positions only. A C in the Margin column indicates a cross position, which is backed by the full account balance and managed at account level.

The position's unrealised PnL and its Maintenance Margin requirement cannot be withdrawn. Only collateral above these amounts is available to reduce.

No. Only the assigned collateral changes. Position size and entry price are unaffected.