Non capital loss and part IV tax

How can I limit the non capital losses applied to part IV tax?

DT Max automatically reduces part IV tax by the previous year's unused non capital losses, or by the current year's non capital losses.

Use the keyword LossLim to limit the amount of losses being applied and choose Non capital loss as the type of losses you wish to limit. Then, under the keyword TaxReduced, select the option Apply to part IV tax and enter the amount you wish to apply.