In recent years, there has been a significant increase in the number of Canadians working from home. With the rise of remote work and self-employment, many Canadians are utilizing their homes as their primary place of business. This shift in the work landscape has led to an increased interest in the tax implications of having a home office. The Canada Revenue Agency (CRA) recognizes that individuals incur additional expenses when working from home and allows you to claim a home office expense deduction on your tax return to reduce taxable income. However, it is important to understand the rules and guidelines set by the CRA to ensure that your claim is valid and avoid any potential issues

In this article, we will provide valuable information and insights to help you navigate the process of claiming a home office expense deduction on your tax return. We will cover the eligibility criteria, eligible expenses, specific guidelines for self-employed individuals and employees, and the common mistakes to avoid.

Home Office Expense Deduction for Self-Employed Individuals

To be eligible to claim a home office expense deduction, you must meet certain criteria set by the CRA. These criteria are designed to ensure that the home office is used for business purposes and that the expenses claimed are reasonable and justifiable. If you are self-employed, you can deduct home office expenses if you meet one of the following conditions:

  • Principal Place of Business

The first criterion is that the home office must be your principal place of business. This means that you use your home office more than 50% of the time for business-related activities. It should be the primary location where you carry out your work and conduct the majority of your business operations.

  • Regular and Continuous Use

In addition to being your principal place of business, the home office must be used on a regular and continuous basis for meeting clients, customers, or patients. This requirement applies to individuals who use their home office to meet with external parties as part of their business activities. Regular and continuous use implies that the home office is an essential and ongoing component of your business operations.

It is important to note that occasional or sporadic use of a home office may not meet the criteria for claiming the home office expense deduction. The CRA expects the home office to be actively and consistently used for business purposes.

Calculating the Home Office Deduction

Once you have determined that your home office meets the eligibility criteria, you can proceed with calculating the home office expense deduction. The deduction is based on a proportionate calculation method that considers the size of your home office relative to your entire home.

Proportionate Calculation Method

The proportionate calculation method allows you to deduct a reasonable portion of your household expenses that are directly related to the operation of your home office. The deduction is calculated by determining the percentage of your home's square footage that is used for your home office.

To calculate the percentage, divide the square footage of your home office by the total square footage of your home (including areas such as bathrooms, kitchens, and hallways). For example, if your home office occupies 200 square feet in a 1000 square foot home, the calculation would be as follows:

200 / 1000 = 0.20 or 20%

This means that you can deduct 20% of your eligible home office expenses from your business income.

Eligible Expenses for Self-Employed Individuals

Image With Text Eligible Expenses For Home Office Expense Deduction

If you are self-employed, the CRA allows you to deduct a variety of eligible expenses that are directly related to the operation of your home office. Some common eligible expenses include:

  • Mortgage interest: You can deduct the portion of your mortgage interest that corresponds to the size of your home office.
  • Utilities: Expenses such as water, heat, electricity, and internet can be deducted based on the proportionate calculation method.
  • Property taxes: The portion of your property taxes that applies to your home office can be claimed as an expense.
  • Maintenance: Costs associated with repairs and maintenance of your home office are eligible for deduction. This may include cleaning services for your office.
  • Rent: If you are renting your home, a portion of your rent can be claimed as an expense.
  • Insurance: Expenses related to home insurance coverage can be deducted based on the proportionate calculation method.

It is important to note that the expenses claimed must be directly related to the operation of your home office. Expenses that are unrelated to your home office or are considered personal expenses cannot be claimed as deductions. In addition, based on CRA guidelines, certain expenses that have been incurred on account of capital should not be fully deducted as home expenses. These can include items such as computers, printers, filing cabinets, chairs, desks, lamps etc. Since these are capital expenses, they should be deducted over a period of several years through the Capital Cost Allowance mechanism.

Lastly, note that one cannot use home expenses to create or increase a loss for the year. You do have the option to carry it forward to another taxation year. Furthermore, it is essential to accurately maintain records and documentation to support your claim in case of an audit.

Home Office Expense Deduction for Employees

Employees who work from home may also be eligible to claim a home office expense deduction from their taxable income, but the rules and restrictions are more stringent compared to self-employed individuals. To claim home office expenses as an employee, you must meet specific requirements outlined by the CRA.

Restrictions and Requirements

Whether you are a salaried employee or a commission-based employee, you can only claim home office expenses if you are required to pay for them yourself and your employer does not reimburse you. This means that if your employer provides a designated workspace or reimburses you for home office expenses, you cannot claim these expenses on your tax return.

To support your claim, your employer must complete Form T2200, Declaration of Conditions of Employment. This form certifies that you are required to use part of your home as a workspace for employment purposes and that you are not reimbursed for your expenses.

It is important to understand that the expenses you can claim as an employee are more limited compared to self-employed individuals. You cannot claim expenses such as mortgage interest or property taxes. However, you may be eligible to claim other eligible expenses, such as office supplies or phone and internet expenses, if they are not reimbursed by your employer.

Common Mistakes to Avoid

Image With Text Common Common Mistakes To Avoid

When claiming a home office expense deduction, it is crucial to avoid common CRA audit triggers that could raise red flags with the CRA or result in the denial of your claim. By understanding these mistakes, you can ensure that your claim is accurate, reasonable, and in compliance with the CRA guidelines.

1. Inflated Home Office Expenses

One common mistake is claiming inflated home office expenses. It is important to be realistic and reasonable when determining the size and expenses of your home office. Claiming excessive expenses could trigger an audit from the CRA and result in further scrutiny of your other deductions and expenses.

2. Misclassifying Expenses

Another mistake to avoid is misclassifying expenses. It is essential to correctly categorize your expenses as either eligible or ineligible for deduction. Capital expenses, such as furniture or equipment purchases, are generally not deductible as home office expenses. These expenses may be subject to separate depreciation rules and should be handled accordingly. Similarly, the principal portion of your mortgage is not deductible.

3. Rounding Up Home Office Expenses

Rounding up your home office expenses is another mistake to be cautious of. While it may be tempting to simplify your calculations by rounding up, it is best to provide accurate and detailed figures. Rounding up may draw additional attention to your claim and could lead to further scrutiny from the CRA.

4. Failure to Break Down Expenses

Failing to break down your home office expenses into different categories can also raise concerns with the CRA. It is important to provide a clear breakdown of your expenses, separating them into relevant categories such as utilities, insurance, and maintenance. This level of detail helps to validate your claim and demonstrate that the expenses are directly related to your home office.


Claiming a home office expense deduction on your tax return can provide significant tax benefits for self-employed individuals and eligible employees. By understanding the eligibility criteria, calculating the deduction accurately, and avoiding common mistakes, you can maximize your tax savings and ensure compliance with the CRA guidelines.

It is recommended that you work with qualified tax accountants, to ensure that you can deduct all your home office expenses that you are entitled to claim. If you are looking for an accountant in Hamilton for professional guidance, contact us today. We are a full service accounting firm in hamilton that has experienced tax experts to cater to all your tax needs.

If you want to learn more about other tax and accounting topics, explore the rest of our blog!


The information provided on this page is intended to provide general information. The information does not take into account your personal situation and is not intended to be used without consultation from accounting/tax professionals. NBG Chartered Professional Accountant Professional Corporation will not be held liable for any problems that arise from the usage of the information provided on this page.

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Written by Neena Gambhir

I'm a Chartered Professional Accountant and have been navigating the waters of public accounting for over a decade. I've had the privilege to work with all sorts of clients – from small family-owned businesses to those big names on the stock exchange, spanning various sectors. Through these experiences, I've gathered a ton of knowledge, especially when it comes to Canadian corporate and individual taxes. I've also got a solid handle on the ins and outs of partnership, trust, and estate taxes.

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