Canadians Working From Home May Qualify for up to $400 Tax Deduction Canadians may be eligible to claim a deduction on their personal income tax return if they were forced to work more than 50 percent of the time from home for at least four consecutive weeks, the Canada Revenue Agency (CRA) said. The new “temporary flat rate” method, which allows Canadians to claim a tax deduction for home office expenses, will allow workers who have not had their expenses reimbursed by employers to claim $2 per day for each day they have worked from home in 2020. An individual may claim a maximum of $400 (200 working days) through this method.