Small Business Tax Deductions Canada 2026 — The Complete List

How Small Business Tax Deductions Work in Canada

A tax deduction reduces your business's net taxable income — which in turn reduces how much corporate or personal tax you owe CRA. Every dollar of eligible deduction saves your business between 12.2 cents and 53.5 cents in tax depending on your corporation type, income level and province.

In Canada, the Income Tax Act allows businesses to deduct expenses that are incurred for the purpose of earning business income. The CRA's core test is simple: was the expense incurred to earn income? If yes, it is likely deductible. If it was personal in nature, it is not. Many expenses are mixed — partly personal and partly business — in which case only the business-use portion is deductible.

The Tax Saving Formula

Understanding how much each deduction actually saves you in real dollars helps prioritise what to track and claim. Here is the formula and examples for 2026:

Corporation vs. Sole Proprietor — What Deductions Apply to You

Most deductions discussed in this guide apply to both corporations filing a T2 and self-employed individuals filing a T1 with a business schedule. However, there are important differences in how some deductions are claimed and calculated.

1. Operating Expenses

Operating expenses are the everyday costs of running your business. These are fully deductible in the year they are incurred — no amortisation, no limits — as long as they are reasonable and for business purposes.

2. Salaries, Wages and Employee Benefits

Salaries and wages paid to employees — including the business owner if the business is incorporated — are fully deductible from business income in the year they are paid. This is one of the most valuable deductions for Canadian small businesses because it reduces corporate income tax while simultaneously providing the owner with employment income.

3. Vehicle Expenses

If you use a vehicle for business purposes, a portion of the operating costs is deductible based on the ratio of business kilometres to total kilometres driven in the year. This applies to both personally-owned vehicles used for business and vehicles owned by the corporation.

4. Capital Cost Allowance (CCA)

Capital Cost Allowance is the tax depreciation system for business assets in Canada. When you purchase assets used to earn business income — computers, equipment, machinery, furniture, vehicles, buildings — you cannot deduct the full cost in the year of purchase. Instead, you deduct a percentage each year based on the CCA class assigned to that type of asset.

The Accelerated Investment Incentive (AII) introduced in 2018 allows most new assets to claim 1.5 times the normal first-year CCA, significantly accelerating deductions on new equipment purchases. The full expensing rules introduced in 2021 allow certain assets to be 100% deducted in the year of acquisition.

5. Meals and Entertainment

Business meals and entertainment expenses are 50% deductible in Canada. This 50% limit applies to the HST-inclusive cost of the meal or entertainment. The expense must be for a genuine business purpose — meeting a client, entertaining a prospective customer or a working meal with an employee to discuss business matters.

6. Advertising and Marketing

Advertising and marketing expenses directly incurred to promote your business are fully deductible. This is a broad category that covers digital advertising, print advertising, website costs, promotional materials and more.

7. Professional and Legal Fees

Fees paid to accountants, lawyers, bookkeepers, consultants and other professionals for services related to earning business income are fully deductible. This includes your annual accounting and tax preparation fees, legal fees for business contracts, HR consulting, IT consulting and management advisory fees.

8. Interest and Bank Charges

Interest paid on money borrowed to earn business income is fully deductible. This includes interest on business loans, lines of credit, business credit cards and other financing facilities used for the business. Bank service charges, transaction fees and annual credit card fees for business accounts are also fully deductible.

9. Insurance Premiums

Insurance premiums on property used to earn business income are fully deductible. This includes commercial property insurance, business liability insurance, professional liability (errors and omissions) insurance, commercial vehicle insurance and business interruption insurance.

10. Business Travel Expenses

Travel expenses incurred to earn business income are deductible. This includes transportation costs, accommodation, and meals during business travel — but not the personal component of any trip that mixes business with vacation.

11. Telephone, Internet and Utilities

Telephone and internet costs used for business are deductible. If you use the same phone or internet connection for both personal and business purposes, only the business-use portion is deductible.

12. SR&ED — Scientific Research and Experimental Development

The SR&ED program is Canada's most generous tax incentive for innovation — allowing eligible businesses to claim a tax credit (not just a deduction) on qualifying research and development expenditures. For Canadian-Controlled Private Corporations (CCPCs), the SR&ED investment tax credit is 35% refundable on the first $3 million of qualifying expenditures — meaning CRA sends you a cash refund even if you owe no tax.

13. Start-Up and Pre-Business Costs

Costs incurred before your business officially begins operations are generally deductible — but the treatment depends on the nature of the expense. Some start-up costs are fully deductible in the first year. Others must be capitalised and deducted through CCA over time.

14. Bad Debts

If you included an amount in your business income in a prior year and that amount has become uncollectible, you can deduct it as a bad debt in the year it is determined to be uncollectible. The CRA requires that you have taken reasonable steps to collect the amount before writing it off.

15. Conventions, Trade Shows and Training

Convention expenses are deductible — but CRA limits this to a maximum of two conventions per year per individual. The convention must be held by a business, professional or trade organisation, and must be held at a location consistent with the organisation's territorial scope.

16. Charitable Donations

For corporations, charitable donations to registered Canadian charities are not deductible as a business expense — but they do generate a federal tax credit that reduces corporate taxes payable. The credit is 15% on the first $200 and 29% on amounts over $200 (33% if the corporation has income subject to the top personal tax rate through a deemed dividend).

17. Employee Health and Wellness Benefits

Premiums paid by the corporation for group health, dental and disability benefits for employees are fully deductible as a business expense and are a non-taxable benefit to the employees. This makes group benefits one of the most tax-efficient forms of compensation available.

What Is NOT Deductible — Common Mistakes

Just as important as knowing what you can claim is knowing what CRA will disallow. These are the most commonly misunderstood non-deductible items that trigger CRA reassessments.

Record-Keeping Requirements for CRA

CRA requires that all businesses maintain adequate books and records to support income and deduction claims. The retention period is six years from the end of the last tax year to which the records relate — not six years from the current date.

Tax Planning Tips to Maximise Your Deductions

Claiming every eligible deduction is not just about record-keeping — it is about planning. Here are the most impactful strategies Canadian small businesses use to reduce their annual tax bill.

Frequently Asked Questions