Tax-deductible expenses for businesses in Quebec (2026)

Did you know that 40% of Quebec entrepreneurs forget to claim legitimate tax deductions every year? This negligence costs an average of $3,500 to $8,000 per business annually. In Quebec, the Taxation Act allows for the deduction of any reasonable expense incurred to earn business income. But what exactly are these eligible expenses? How can you maximize your deductions while respecting the rules of Revenu Québec and the Canada Revenue Agency (CRA)? This comprehensive guide takes you through the full list of deductible expenses for 2026, with detailed tables, real-world examples by industry, and common mistakes to avoid.

Whether you're self-employed, an SME owner or an entrepreneur in specialized sectors such as construction, real estate or restaurants, you'll discover how to optimize your tax deductions and legally reduce your tax burden. We also cover what's new for 2026, special tax credits like the 30% R&D credit, and how a tax accountant can save you thousands of dollars.

What is a tax-deductible expense for a business?

A tax-deductible expense is a cost incurred in the normal course of your business that you can subtract from your gross income to reduce your taxable income. According to Revenu Québec, an expense is eligible if it meets three basic criteria.

The three criteria for eligibility of an expense

1. Reasonableness: The expense should be proportionate to the company's revenue and industry standards. A restaurant that spends $80,000 on office supplies would be deemed unreasonable by Revenu Québec.

2. Relationship to business income: The expense must have been incurred directly to earn business income. Personal expenses (everyday clothes, personal groceries) are never deductible, even if you are self-employed.

3. Supporting documents: You must keep detailed invoices, receipts, or bank statements proving the nature, amount, date, and business purpose of the expense. These documents must be kept for 6 years after the end of the relevant tax year.

Current Expenses vs. Capital Expenditures

There is an important tax distinction between two types of expenses:

Current expenses: Regular operating costs consumed during the year (rent, salaries, supplies, electricity). These expenses are 100% deductible in the year they are incurred, with some exceptions (meals at 50%).

Capital expenditures: Acquisitions of durable assets used over several years (vehicles, equipment, computers, furniture). These expenses are not immediately deductible, but are depreciated via capital cost allowance (CCA) over several years at rates prescribed by the CRA. For example, a $3,000 computer (Class 50, 55% rate) will be amortized over about 3-4 years.

100% deductible expense categories

Here's the full list of expense categories you can deduct 100% from your business income, along with real-world examples for each industry. These current expenses are deductible in the year they are incurred, provided that you meet the reasonableness test and keep your receipts.

Photo by Roberto Nickson on Unsplash

Expenses deductible at 50% only

Certain categories of expenses are subject to a deduction limit of 50% according to federal and Quebec tax rules. This restriction applies primarily to expenditures involving an element of personal consumption.

Example of calculation: You invite a potential customer to a restaurant to discuss a contract. Total bill: $180 (taxes included). You can deduct: $180 × 50% = $90 in your eligible expenses. The remaining $90 is not deductible.

Pitfall to avoid: If you are organising a promotional event open to the public (product launch, open house, free tasting), food and beverage costs are 100% deductible because the purpose is purely commercial with no personal benefit. Document the promotional nature of the event (posters, public invitations, photos).

Company car: rules and ceilings 2026

Expenses related to vehicles used for the company follow specific rules with ceilings to prevent abuse. The rules differ depending on whether you use the actual expense method or the mileage allowance.

Two Methods for Deducting Vehicle Expenses

Method 1: Actual Proportionate Costs

You keep all receipts and deduct the business portion of each expense (gas, maintenance, insurance, registration, car wash). If you use your vehicle 70% for business and 30% personally, you deduct 70% of each expense.

Calculation of the professional portion: (Professional Km ÷ Total Annual Km) × 100. Example: 25,000 business km out of a total of 35,000 km = 71.4% professional use.

Method 2: Simplified kilometric allowance (if applicable)

For self-employed workers and certain SMEs, you can use the rate prescribed by Revenu Québec for 2026 :

• $0.73/km for the first 5,000 km driven for business
• $0.67/km for each additional kilometre

This method is simpler (no need to keep all gas and maintenance receipts), but you should keep a detailed mileage log showing the date, destination, purpose of the trip, and mileage for each business trip.

Capital Cost Allowance (CCA) Limits 2026

If you buy a vehicle for your business, you can't deduct the full cost right away. You must depreciate the vehicle via capital cost allowance (CCA), with maximum caps on the eligible purchase cost.

Photo by Unsplash

Car rental: If you lease a vehicle for your business, the rental costs are deductible with a monthly cap of $950 + taxes (if the lease agreement was signed after 2018). Above this amount, the excess is not deductible.

NON-deductible expenses

Even if some expenses seem to be related to your business, the Taxation Act explicitly excludes several categories. Here is the complete list of expenses that can never be deducted from your business income in Quebec.

• Personal expenses: Groceries, personal clothing (except mandatory work uniforms), recreation, personal medical expenses, personal life insurance
• Fines and penalties: Parking tickets, fines for violations of the Highway Safety Code, Revenu Québec penalties for late payment
• Business start-up expenses: Incorporation fees, legal fees for formation, initial registration fees (must be capitalized and amortized)
• General provisions and reserves: You cannot deduct a "provision for potential bad debts" or "contingency reserve". Only documented actual losses are deductible
• Owner's withdrawals: The amounts you take from the company for personal use are not deductible expenses (they are your remuneration)
• Expenses incurred prior to the start of operations: Premises search costs, pre-launch market research (must be capitalised)
• Income tax: Your personal tax or your corporation's tax is never deductible (avoids double deduction)
• Interest on personal loans: Even if you reinject the money into the company, the interest on a personal debt remains non-deductible
• Personal RRSP contributions: Deductible on your personal tax return, not on the business tax return
• Unreasonable or excessive expenses: Revenu Québec may deny a deduction deemed disproportionate to income or industry standards

Special case: Gifts to customers

Gifts valued at less than $500 per person per year (calendars, baskets, promotional pens) are 100% deductible if they bear your company logo. Above $500, it is considered as representation expenses (50% deductible). Cash gifts are never deductible.

Deductible expenses by type of business

Each business line has specific eligible expenses. Here's a detailed table of specific deductions by industry to help you maximize your deductions based on your field.

Every industry has complex tax nuances. A corporate tax accountant knows the deductions specific to your industry and can identify tax savings that you may have missed. At Bankeo, we match your business with accountants who are experts in your field from our network of 1,500+ firms in Quebec.

Special tax credits you can't miss

In addition to deductions for current expenses, Quebec and the federal government offer refundable tax credits that directly reduce your tax bill or generate a refund even if you don't have to pay taxes. These programs are often underutilized due to lack of knowledge.

1. R&D, Innovation and Pre-Commercialization Tax Credit (RCIC)

The new RCIC credit, effective for tax years beginning after March 25, 2025, replaces eight previous tax credits and offers enhanced rates. According to the Quebec Ministry of Finance, this credit is intended to support innovation.

• Base rate: 20% of eligible R&D expenses (up from the previous 14%)
• Enhanced rate: 30% on the first $1,000,000 of annual eligible expenses
• Eligibility: All businesses operating an establishment in Québec, regardless of SME/large business
• Eligible expenses: Researchers/developers salaries, research contracts with universities/research centres, materials consumed in R&D, share of overheads
• Refundable credit: If your tax payable is less than the credit, you will receive a cash refund

Case in point: A technology startup invests $800,000 in developer salaries and R&D equipment. CRIC credit: 800,000 × 30% = $240,000 refundable tax credit. This amount directly reduces the tax payable or generates a refund.

2. Investment tax credit

Provincial credit to encourage the acquisition of manufacturing and processing equipment in Quebec. Rate varies from 4% to 24% depending on the region and the type of equipment. Particularly advantageous for manufacturing companies in resource regions.

3. Training tax credit

The Act to promote the development of workforce training allows employers to recover a portion of their employees' training expenses through the payroll. Obligation to spend at least 1% of the wage bill on training, otherwise penalty.

Strategic Advice: Tax credits can account for 15% to 40% of some business expenses. However, credit applications require rigorous documentation and compliance with strict procedures. An accountant who is an expert in tax optimization maximizes your chances of approval and identifies all the credits for which you are eligible.

The 5 Common Mistakes to Avoid

After supporting more than 12,000 Quebec entrepreneurs in their accounting matching, we have identified recurring errors that cost thousands of dollars in lost deductions or penalties from Revenu Québec.

Mistake #1: Mixing personal and professional expenses

Problem: Using the same credit card for personal and business purchases, claiming partially personal expenses (e.g., cell phone 100% when it is used 40% personally).

Solution: Open a bank account and credit card dedicated exclusively to the business. If a property is mixed (vehicle, telephone), rigorously calculate the professional portion and document it (mileage register for vehicle, call records for telephone).

Mistake #2: Neglecting training and professional development costs

Problem: Many entrepreneurs forget to ask for industry conferences, online training (Udemy, Coursera for business skills), subscriptions, specialized journals, professional books.

Solution: Keep all the receipts for training courses directly related to your current activity. If you are a web developer and are taking advanced training in React, it is 100% deductible. If you take a yoga class to manage your stress, it is not deductible (personal benefit).

Mistake #3: Calculating the vehicle CCA incorrectly

Problem: Deduct the total cost of buying a vehicle in the year of acquisition, ignore the $39,000/$61,000 limits, forget the half-rate rule in the first year.

Solution: If you are buying a company vehicle, consult an accountant to properly calculate the CCA by class (10.1 or 54), apply the limit, and spread the depreciation over several years. The mistake can trigger a tax audit.

Mistake #4: Not keeping supporting documents for 6 years

Problem: Discard invoices after filing the return, do not scan paper receipts that are erased (thermal receipts).

Solution: Revenu Québec and the CRA can audit your returns up to 6 years after the end of the tax year (or indefinitely in the case of suspected fraud). Scan all your receipts with an accounting app (QuickBooks, Wave, Momenteo) or keep them in year-labeled binders. Thermal receipts are erased: take a picture of them immediately.

Mistake #5: Ignoring available special tax credits

Problem: Do not claim R&D credit (tech startups), investment credit (manufacturers), or sector credits due to perceived lack of knowledge or complexity.

Solution: Tax credits can amount to tens or even hundreds of thousands of dollars. A specialized accountant identifies all relevant credits, prepares applications with rigorous documentation, and maximizes your repayments. Investing in an accountant who is an expert in tax credits generates an ROI of 300% to 800% on average.

Photo by Olga DeLawrence on Unsplash

Retention of documents: duration and format

Rigorous retention of your supporting documents is a legal obligation and your best protection in the event of a tax audit. Here are the official rules according to Revenu Québec and the CRA.

Shelf life: 6 years minimum

You must keep all accounting and tax records for 6 years from the end of the tax year to which they relate. For example, for the 2026 tax year (ending December 31, 2026 for most businesses), you must keep the records until December 31, 2032.

Exception: In the event of fraud, tax evasion or litigation, Revenu Québec may require the documents beyond 6 years (no time limit). Caution: keep documents for the acquisition of major assets (buildings, major equipment) indefinitely even after they have been disposed of.

Documents to keep

• Invoices and receipts: All expenses deducted (suppliers, purchases, overheads)
• Bank statements: Business accounts, business credit cards
• Sales records: Invoices issued, cash reports, point-of-sale transactions
• Proof of income: Customer contracts, purchase orders, proof of payment received
• Payroll Records: Records of employment, pay stubs, RRQ/QPIP/CNESST contributions
• Tax returns: T2, CO-17, GST/QST, copies of filed returns and acknowledgements of receipt
• Mileage registers: If you deduct vehicle expenses (date, destination, km, purpose of the trip)
• Contracts and leases: Commercial leases, supplier contracts, major customer contracts
• Proof of tax credits: R&D credit applications, training, investment with supporting documentation

Paper vs. digital: both are accepted

Revenu Québec and the CRA accept digital documents as long as they are legible, complete, and authentic. You can scan your paper invoices and destroy the originals IF you follow these rules:

• Sufficient image quality to read all the details (date, amount, supplier, nature of the expense)
• Files organized by year and category (consistent naming)
• Regular backups on at least two separate media (cloud + external hard drive, or two different clouds)
• Preferred non-editable format (PDF) to ensure integrity

Bankeo recommendation: Use cloud-based accounting software (QuickBooks, Wave, Momenteo) that automatically captures your photo receipts and associates them with bank transactions. These tools offer a secure automatic backup and make it much easier to manage in the event of a tax audit.

How Bankeo helps you maximize your tax deductions

Maximizing your tax deductions while complying with the complex rules of Revenu Québec and the CRA requires specialized accounting. This is exactly why Bankeo exists: to match you with the ideal accountant for your company, specialized in your sector of activity and your specific tax needs.

The Bankeo process in 3 simple steps

Step 1: You complete our form (2 minutes)

Indicate your industry, revenue, accounting needs (bookkeeping, returns, tax planning, tax credits), and preferences (budget, location, accounting software used).

Step 2: Our team analyzes and selects the relevant accountants (24-48h)

Among our network of 1,500+ accounting firms throughout Quebec, we identify accountants who exactly match your profile. We take into account their sector expertise (construction, real estate, techno, catering, etc.), their experience with similar clients, their rates, and their customer approach.

Step 3: You meet with the selected accountants and choose

You will receive the full contact details of the recommended accountants, including their service catalog and pricing proposal. You choose the number of accountants you want to meet (it's not a fixed number imposed). Bankeo accompanies you until the signing of the mandate and remains available if the relationship is not optimal.

Why 12,000+ entrepreneurs trust us

• Free for entrepreneurs: Our matchmaking service is 100% free for entrepreneurs.
• Full transparency: You receive all the information about the recommended accountant (services, rates, experience, customer reviews) before you commit.
• Guaranteed sector expertise: We only match you with accountants with proven expertise in your industry. A construction contractor will have an accountant who knows the CCQ, construction camps, and subcontracting. A self-employed worker will have an accountant who is an expert in home office and personal tax optimization.
• Ongoing support: If your relationship with the accountant is not going as planned, contact us. We intervene to find a solution or pair you with another accountant who is better suited.

On average, entrepreneurs matched via Bankeo with an accountant specializing in taxation recover $5,000 to $12,000 in additional deductions in the first year. Investing in a good accountant generates a return on investment of 400% to 800% in tax savings and freed up time.

Frequently Asked Questions (FAQs)

1. Can I deduct my salary if I am self-employed?

No. As a self-employed ( sole proprietorship), your "salary" is the net profit of the business after all expenses. You cannot deduct a salary paid to yourself because it would be a double deduction. If you are incorporated (corporation), you can pay yourself a salary or dividends according to an optimal tax strategy (see our salary vs. dividends guide).

2. My spouse works in my company. Can I deduct his salary?

Yes, as long as the salary is reasonable and justified in relation to the tasks performed and the hours worked. Revenu Québec specifically verifies salaries paid to family members. You must issue T4 and RL-1 slips, deduct taxes at source, and document hours and responsibilities. An inflated salary without justification will be refused during an audit.

3. What are the deductible expenses for a home office?

If you meet the criteria (space used exclusively for business or main customer meeting place), you can deduct proportionately: electricity, heating, home insurance, municipal taxes, mortgage interest (not the principal repaid), maintenance and repairs. Calculate the proportion based on the area: office 150 sq. ft. / house 1,500 sq. ft. = 10%. Deduction: (electricity + heating + taxes + insurance + interest) × 10%.

4. Can I deduct 100% of my meals if I work from home?

No. Personal meals are never deductible, even if you work from home. Only business meals with customers, suppliers or partners are 50% deductible. Exception: meals provided in a remote construction camp (construction, forestry) are 100% deductible.

5. Can I deduct my gym membership to stay fit for work?

No. Expenses for gym, yoga, sports or personal wellness activities are never deductible, even if you claim that they help you work better. These are personal expenses. A very rare exception: a professional sports trainer who uses the subscription directly for his commercial activity (demonstrations, customer courses).

6. How does capital cost allowance (CCA) work?

CCA depreciates (gradually deducts) the cost of acquiring non-expendable assets (vehicles, computers, equipment) over several years at rates prescribed by the CRA. Example: $2,000 computer (category 50, 55% rate). Year 1: CCA of $1,100 (2,000 × 55%). Year 2: CCA of $495 (900 × 55%). And so on until full amortization. Consult our guide to CCA and depreciation categories.

7. What are the new 2026 tax features for Québec businesses?

Main new features for 2026: (1) New RCIC credit for R&D at a 30% bonus rate on $1 million (replacement of 8 old credits). (2) Standard vehicle CCA limit increased to $39,000 (vs. $36,000 in 2025). (3) Zero-emission vehicle cap maintained at $61,000. (4) Kilometric allowance increased to $0.73/km for the first 5,000 km and $0.67/km additional.

8. How long do I have to keep my invoices and receipts?

Minimum 6 years from the end of the relevant tax year . Example: tax year 2026, keep until December 31, 2032. In the event of fraud or litigation, Revenu Québec can ask for more than 6 years. Paper and digital formats accepted (legible, complete, saved). Use cloud-based accounting software to secure your documents automatically.

9. Do I have to pay the GST/QST on all my deductible expenses?

Not necessarily. If you are registered for GST/QST files, you pay taxes on your purchases, but you can recover these amounts through input tax credits (ITCs) and input tax refunds (ITRs). Recovered taxes are not part of the final deductible expense. Only the net amount (before recoverable taxes) is deductible in your financial statements.

10. How can an accountant help me maximize my tax deductions?

An accountant specializing in taxation knows all the legal deductions in your sector, identifies special tax credits (R&D, training, investment), structures your expenses to optimize deductions (choice between cash purchase vs. financing, timing of purchases), prepares an annual tax plan, and protects you in the event of a tax audit. On average, a good accountant identifies $5,000 to $12,000 in additional deductions that the contractor may have missed. Find your ideal accountant with Bankeo.

Conclusion: Don't leave any more money on the table

Understanding and maximizing your tax deductions is one of the most powerful levers to improve the profitability of your Quebec business. As we've seen in this exhaustive guide, deductible expenses cover a wide range of categories from office supplies to 30% R&D tax credits, home office, company vehicles, and industry-specific expenses.

The three points to remember absolutely:

• Thoroughly document: Keep all your invoices and supporting documents for at least 6 years, preferably digitally with cloud accounting software.
• Know the specific rules: Deductions at 100% vs 50%, 2026 vehicle DPA ceilings, home office criteria, sectoral tax credits.
• Get support: An accountant who is an expert in corporate taxation generates an ROI of 400% to 800% in identified tax savings and time freed up.

Are you ready to optimize your tax and stop leaving thousands of dollars in legitimate deductions on the table? Find the ideal accountant for your business with Bankeo in less than 48 hours. Free, fast, and without obligation. Join the 12,000+ Quebec entrepreneurs who have trusted our accounting matching service.

Sources

• Revenu Québec - Operating expenses
• Canada Revenue Agency - Business expenses
• Raymond Chabot Grant Thornton - Tax Planner
• Quebec CPA Order
• Dynacom - Quebec Accounting Resources
• MPMT - 2026 Automobile Expenses: Limits and CCA Rates
• Quebec Ministry of Finance - CRIC Credit for R&D