Have you allowed for the fact that any depreciable items purchased in the tax year are subject to the half year rule? If you purchased something for $2000 it is only going to add $1000 to the base amount, as you are only allowed half the depreciation on that item.
On this link, please check out the heading "Column 6 - Adjustments for current year acquisitions"
https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/t4002-business-prof...
