Home Office Claims for Multiple Jobs: Tax Rules When You Work Two Jobs From Home

If you work two or more jobs from your home office, you can claim home office expenses, but the CRA has specific rules about how to calculate and allocate them fairly. The key is that your total home office deduction cannot exceed your total income from all sources combined, and you must proportionally divide expenses between jobs based on the time or space each one uses. You'll need clear records showing which job used the office space when, and whether you're claiming under the simplified method or detailed expense tracking. Yes, this CRA rule may apply to you. Many Canadians balance a salaried position with freelance work, a side business, or contract jobs. As long as you have a dedicated workspace and one or more of your jobs qualifies for a home office deduction, you can claim expenses. The tricky part is allocation. Both employees and self-employed workers can claim home office costs, but the rules differ slightly: Employees with multiple jobs: You can claim only if your employer required you to work from home and did not provide an allowance. Both jobs must meet this test independently.

Frequently Asked Questions

If I work two jobs from home, can I claim the full home office deduction for both?

No. You must allocate home office expenses proportionally between jobs based on time used, physical space, or workload percentage. Each job gets only its fair share of total home office costs. The CRA expects your allocation method to be reasonable and consistent year to year.

Do I need to keep a time log to prove how I split my home office between jobs?

It's not mandatory, but highly recommended. A simple calendar or spreadsheet showing which hours you worked each job provides strong evidence if the CRA questions your allocation. For space-based allocation, photos and measurements of your office work instead.

Can I use the simplified method ($5 per square meter) for multiple jobs?

Yes. The simplified method still requires you to allocate the total deduction between jobs proportionally, but you don't need detailed receipts for utilities, maintenance, or rent. You'll still need to document your allocation method.

What if my home office expenses exceed my total income from both jobs combined?

You can only deduct up to your total income from all sources. Any excess may carry forward to next year if you remain self-employed in that business, but it depends on your specific situation. This CRA rule may apply to you, so consult a tax professional.

Do I report multiple job home office claims on different lines of my tax return?

Yes. Employee home office claims go on Line 22900 (work-space-in-home expenses), while self-employed home office costs are deducted on your business income statement (Schedule 8 or 9). Keep separate records for each job to match the correct line.

Steps

1. Document your jobs and workspace: Write down the names and income amounts for each job, and measure or photograph your dedicated home office space. Note how much space is allocated to each job (e.g., a desk for Job A, a corner for Job B, or time-shared use of the same desk).
2. Choose an allocation method: Decide whether you'll allocate expenses by time worked (hours per job), physical space (square footage per job), or workload percentage (income ratio). Write this down in one sentence as your allocation policy and keep it consistent every year.
3. Calculate total home office expenses: Collect receipts and bills for the year: rent or mortgage interest, property tax (proportional), utilities, internet, phone, insurance, maintenance, supplies, and equipment. Use the simplified method ($5/sq meter for the year, up to 300 sq meters) or the detailed method, depending on what's easier for you.
4. Apply your allocation formula: Multiply total home office expenses by your allocation percentage for each job. For example, if total expenses are $2,000 and Job A gets 60%, then Job A's deduction is $1,200. Record the deductible amount per job on a simple spreadsheet.
5. Check income limits and loss rules: For self-employed work, ensure your home office deduction does not exceed income from that job. For employees, confirm your employer required you to work from home and did not provide an allowance. Adjust deductions downward if needed.
6. Organize records by job and document allocation: Create separate folders (digital or paper) for each job with receipts, time logs, and photos. Attach a one-page summary of your allocation method to your records. This evidence protects you if the CRA asks questions.
7. File and report on the correct lines: Enter employee home office claims on Line 22900 of your T1 General return. Report self-employed claims on your business income statement (Schedule 8 or 9). Use our [Canadian Income Tax Calculator](/tools/tax-calculator) to estimate your total tax owing after all deductions.