Tax Deductions for Small Businesses in Canada: What You Can Claim

Running a small business comes with a lot of costs. The good news is that many of those costs are tax-deductible. Claiming eligible business expenses reduces your net income, which lowers the amount of tax you owe. Over a full year, these deductions can add up to significant savings.

This guide covers the most common small business tax deductions in Canada and helps you understand what you can and cannot claim.

1. Why Tax Deductions Matter for Small Businesses

As a small business owner, you pay tax on your net business income — that is, your revenue minus your allowable business expenses. Every dollar you deduct reduces your taxable income by one dollar. If you are in a 40% marginal tax bracket, a $1,000 deduction saves you $400 in tax.

For this reason, keeping track of all your business expenses throughout the year is one of the smartest things you can do.

2. Who Can Claim Small Business Deductions?

You can claim business deductions if you:

• Are self-employed or a sole proprietor
• Operate a partnership
• Own an incorporated company (corporation)
• Carry on a profession, trade, or business in Canada

Sole proprietors and partners report business income and expenses on the T2125 form (Statement of Business or Professional Activities) as part of their personal T1 return. Corporations file a T2 corporate tax return.

3. Common Business Expenses You Can Deduct

The CRA allows you to deduct any expense that was incurred to earn business income, as long as it is reasonable. Here are the most common deductions.

4. Home Office Expenses

If you work from home, you may be able to deduct a portion of your home expenses as a business cost. You can use one of two methods:

Detailed Method: Deduct the actual costs of running the home office (utilities, internet, mortgage interest or rent, repairs, etc.) based on the percentage of your home used for business. For example, if your office takes up 10% of your home, you can deduct 10% of eligible costs.

Simplified Method (Flat Rate): You can claim a flat amount per day worked from home. The CRA has allowed this approach for eligible workers in certain periods, but always check current CRA guidelines for whether this applies to your situation.

Your home office must be either your main place of business, or used exclusively and regularly for meeting clients.

5. Vehicle Expenses

If you use a vehicle for business purposes — driving to client meetings, job sites, or suppliers — you can deduct a portion of vehicle costs based on the percentage of kilometres driven for business.

Deductible vehicle expenses include:

• Gas and fuel
• Insurance
• Maintenance and repairs
• Lease payments (subject to a ceiling)
• Depreciation through Capital Cost Allowance (CCA)
• Licensing and registration fees
• Parking (for business purposes)

You must keep a mileage log that records:

• The date of each trip
• The destination
• The business purpose
• The kilometres driven

Personal driving is not deductible. If you drive 20,000 km in a year and 12,000 km is for business, you can deduct 60% of your vehicle costs.

6. Salaries and Wages

If you have employees, their salaries and wages are fully deductible as a business expense. This includes:

• Gross wages paid to employees
• Bonuses and commissions
• Your portion of Canada Pension Plan (CPP) contributions
• Your portion of Employment Insurance (EI) premiums
• Employer Health Tax (where applicable)

If you pay a salary to a family member, the CRA expects the amount to be reasonable for the work performed. Paying a spouse or child an unreasonably high salary to reduce your taxes is not allowed.

7. Advertising and Marketing

Expenses related to promoting your business are generally deductible. This includes:

• Website design and hosting
• Social media advertising
• Google or Facebook ads
• Business cards and brochures
• Sponsorships with Canadian media
• Trade show fees

Note: Advertising costs directed at foreign markets or through foreign websites may have different treatment. The CRA has specific rules about advertising on foreign platforms.

8. Meals and Entertainment

The CRA allows you to deduct 50% of eligible meal and entertainment expenses if they are directly related to earning business income. For example, taking a client out to dinner counts.

You cannot deduct:

• Personal meals
• Lavish or unreasonable expenses
• Meals that are purely personal in nature

Always keep receipts and note the business purpose and who attended.

9. Professional Fees

Fees paid to accountants, lawyers, bookkeepers, and consultants for business-related services are fully deductible. This includes:

• Tax preparation fees
• Legal fees related to business contracts
• Business consulting fees
• Software subscriptions used for business (like accounting software)

10. Capital Cost Allowance (CCA)

When you buy major assets for your business — like computers, machinery, or vehicles — you cannot deduct the full cost in one year. Instead, you claim Capital Cost Allowance (CCA), which is the CRA’s version of depreciation.

The CRA assigns each type of asset a class with a specific depreciation rate. For example:

• Class 10: Most vehicles — 30% per year
• Class 8: Equipment and tools — 20% per year
• Class 50: Computer equipment — 55% per year
• Class 14.1: Goodwill and eligible capital property — 5% per year

You claim CCA on Schedule 8 of your tax return. You are not required to claim the maximum CCA in any year, which gives you flexibility to manage your taxable income.

11. What You Cannot Deduct

Some expenses are not deductible, even if they seem business-related:

• Personal expenses (groceries, personal clothing, personal travel)
• Club memberships (golf clubs, social clubs)
• Fines and penalties
• Life insurance premiums (in most cases)
• Principal portion of mortgage payments
• Capital purchases (instead, claim CCA over time)
• Expenses that are unreasonable in amount

The CRA may audit businesses that claim unusual or very high deductions relative to their income, so always keep documentation for every claim.

Table of Summary

Frequently Asked Questions

Can I deduct my cell phone as a business expense?

Yes, but only the portion used for business. If you use your phone 70% for business and 30% personally, you can deduct 70% of the cost.

Do I need receipts for every deduction?

Yes. The CRA requires you to keep records and receipts for at least six years in case of an audit.

Can I deduct business startup costs?

Some startup costs are deductible. Pre-opening expenses like legal fees, registration, and market research may be deductible in the year the business starts.

What if my business had a loss?

Business losses can generally be carried back 3 years or forward 20 years to offset income in other years.

Conclusion

Claiming all eligible tax deductions is one of the most effective ways to reduce the amount of tax you pay as a small business owner in Canada. From home office expenses and vehicle costs to salaries and CCA, there are many legitimate deductions available to you.

The key is to keep organized records throughout the year — receipts, mileage logs, invoices, and bank statements — so you have everything you need when tax time comes.

If you are unsure what you can and cannot deduct, working with a tax professional can save you both money and headaches.

Get Help With Small Business Tax Deductions

Knowing which expenses qualify—and how to document them—can help you file accurately and avoid claiming personal or ineligible costs. Taxccount Canada can help review your records, identify potential deductions, and prepare your business tax return.

Contact Taxccount Canada to book a free consultation.

This is general information only and not professional advice. Consult a professional before acting.