Eligible employees who worked from home in 2023 will be required to use the Detailed Method to claim home office expenses. The temporary flat rate method does not apply to the 2023 tax year.

As an employee, you may be able to claim certain home office expenses (work-space-in-the-home expenses, office supplies, and certain phone expenses).

This deduction is claimed on your personal income tax return. Deductions reduce the amount of income you pay tax on, so they reduce your overall income tax liability.

Salaried employees can claim: Electricity, Heat, Water, some utilities, monthly Internet access or part of your rent.

Commission employees can also claim: home insurance, property taxes and lease of a cell phone, computer and more.

Review the CRA website for more. https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-return/completing-a-tax-return/deductions-credits-expenses/line-22900-other-employment-expenses/work-space-home-expenses.html