Free tool · Taxes
Home Office Expense Calculator (Canada)
Work out your deductible home office expenses using the percentage-of-home method, and see your estimated tax saving.
Home office expense calculator
Enter your annual home expenses and the share of your home used for business. The calculator estimates your deductible business-use-of-home amount and the tax it could save. Enter a percentage, or both square-footage fields to work the share out from area.
How this is estimated: the calculator multiplies your total home expenses by the business-use share (your percentage, or business area ÷ total area) and then by your marginal tax rate. It does not apply the net-income limit or CCA rules — confirm your situation on canada.ca.
Official sources: Business-use-of-home expenses — Canada.ca · Temporary flat rate method (2020–2022) — Canada.ca