Tax-deductible expenses for businesses (2026)

Did you know that 40% of Quebec entrepreneurs forget to claim legitimate tax deductions each year? This oversight costs businesses an average of $3,500 to $8,000 annually. In Quebec, the Income Tax Act allows you to deduct any reasonable expense incurred to earn business income. But what exactly are these eligible expenses? How can you maximize your deductions while complying with the rules of the tax authorities and the Canada Revenue Agency (CRA) ? This comprehensive guide presents the complete list of deductible expenses for 2026, with detailed tables, concrete examples by sector, and common mistakes to avoid.

Whether you're self-employed, a small business owner, or an entrepreneur in specialized fields like construction, real estate, or restaurants, you'll learn how to get the most out of your tax deductions and legally shrink your tax bill. We'll also dive into what's new for 2026, special tax credits like the 30% R&D credit, and how a tax pro can save you thousands.

What exactly is a tax-deductible expense for a business?

A tax-deductible expense is basically a cost your business incurs during its regular operations that you can subtract from your total income to lower how much tax you owe. Revenu Québec says an expense is good to go if it hits three main points.

The 3 Key Rules for Deductible Expenses

1. It must be reasonable: The expense should match your business's income and what's normal for your industry. For example, if a restaurant spent $80,000 on office supplies, Revenu Québec would probably say that's not reasonable.

2. It must be for business income: The expense has to be directly related to making money for your business. Personal costs (like your daily clothes or groceries) are never deductible, even if you're self-employed.

3. Keep your receipts: You need to hold onto detailed invoices, receipts, or bank statements that show what the expense was for, how much it cost, when it happened, and why it was for your business. Make sure to keep these documents for 6 years after the tax year they relate to.

Current Expenses vs. Capital Expenses

There's an important tax difference between two kinds of expenses:

Operating Expenses: These are your regular day-to-day business costs that you use up within the year (like rent, salaries, supplies, and electricity). You can deduct 100% of these expenses in the year you pay them, except for a few things like meals, which are 50% deductible.

Capital Expenses: These are for buying long-lasting assets you'll use for several years, like vehicles, equipment, computers, or furniture. You can't deduct these costs all at once. Instead, they're spread out over several years through something called Capital Cost Allowance (CCA), using rates set by the CRA. For instance, a $3,000 computer (Class 50, 55% rate) would be depreciated over roughly 3-4 years.

Categories of 100% Deductible Expenses

Here's a complete list of expense categories you can deduct 100% from your business income, with real-world examples for each area. These day-to-day expenses are deductible in the year you incur them, as long as they're reasonable and you keep your receipts.

Photo by Roberto Nickson on Unsplash

Expenses That Are Only 50% Deductible

Some types of expenses have a 50% deduction limit under federal and Quebec tax rules. This rule mainly applies to expenses that also have a personal use component.

Calculation Example: Let's say you invite a potential client to a restaurant to talk about a contract. The total bill is $180 (taxes included). You can deduct: $180 × 50% = $90 as an eligible expense. The other $90 isn't deductible.

Trap to Avoid: If you host a promotional event open to the public (like a product launch, open house, or free tasting), the food and drink costs are 100% deductible. This is because the goal is purely commercial, with no personal benefit. Make sure to document the promotional nature of the event well (keep posters, public invitations, and photos).

Business Vehicles: 2026 Rules and Limits

Expenses for vehicles used for your business have specific rules and limits to prevent misuse. The rules change depending on whether you use the 'actual expenses' method or the 'mileage allowance' method.

Two Methods to Deduct Vehicle Expenses

Method 1: Actual Expenses (Proportional)

You keep all your receipts and deduct the business portion of each expense (like gas, maintenance, insurance, registration, and car washes). So, if you use your vehicle 70% for business and 30% for personal use, you'd deduct 70% of each of those expenses.

How to Calculate the Business Portion: (Business km ÷ Total annual km) × 100. For example: 25,000 business km out of 35,000 total km means 71.4% business use.

Method 2: Simplified Mileage Rate (if applicable)

If you're self-employed or run a small business, you can use the prescribed rate for 2026 from Revenu Québec:

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

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

Capital Cost Allowance (CCA) Limits for 2026

If you buy a vehicle for your business, you can't deduct the full cost right away. You have to depreciate the vehicle using Capital Cost Allowance (CCA), with maximum limits on the eligible purchase cost.

Photo by Unsplash

Vehicle Lease: If you lease a vehicle for your business, the lease payments are deductible, with a monthly limit of $950 + taxes (if the lease agreement was signed after 2018). Anything over that amount isn't deductible.

Non-Deductible Expenses

Even if some expenses seem related to your business, the Income Tax Act specifically excludes several categories. Here's a complete list of expenses that can never be deducted from your business income in Quebec.

• Personal Expenses: Groceries, personal clothing (unless it's a mandatory work uniform), leisure activities, personal medical expenses, personal life insurance
• Fines and Penalties: Parking tickets, fines for highway safety code violations, Revenu Québec penalties for late payments
• Business Startup Costs: Incorporation fees, legal fees for setup, initial registration fees (these need to be capitalized and depreciated)
• General Provisions and Reserves: You can't deduct a 'provision for potential bad debts' or a 'contingency reserve'. Only actual, documented losses are deductible.
• Owner's Withdrawals: Any money you take out of the business for personal use isn't a deductible expense (that's your pay)
• Expenses Incurred Before Operations Begin: Costs for finding a location, pre-launch market studies (these need to be capitalized)
• Income Tax: Your personal income tax or your corporation's tax is never deductible (this prevents double-dipping)
• Interest on Personal Loans: Even if you put the money back into the business, interest on a personal debt remains non-deductible.
• Personal RRSP Contributions: You can deduct these on your personal tax return, but not on your business one.
• Unreasonable or Excessive Expenses: Revenu Québec might say no to a deduction if they think it's way too much compared to your income or what's normal in your industry.

Special Case: Gifts for Clients

Gifts worth less than $500 per person per year (like calendars, gift baskets, or promotional pens) are 100% deductible if they have your company logo. If they're over $500, they're considered entertainment expenses (50% deductible). Just remember, cash gifts are never deductible.

Deductible Expenses by Business Type

Every industry has its own specific expenses you can claim. Here's a detailed breakdown of specific deductions by industry to help you get the most out of your deductions, no matter your field.

Every industry has its own complex tax nuances. A corporate tax expert knows the deductions specific to your sector and can identify tax savings you might have missed. At Bankeo , we match your business with expert accountants in your field from our network of over 1,500 accountants in Quebec.

Special tax credits you don't want to miss

Besides your usual business deductions, Quebec and the feds have refundable tax credits that can either cut your tax bill directly or even get you money back, even if you don't owe any taxes! A lot of folks don't use these programs because they're not aware of them.

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

The new CRIC credit, which kicked off for fiscal years starting after March 25, 2025, takes the place of eight older tax credits and gives you even better rates. The Quebec Ministry of Finance says this credit is designed to boost innovation.

• Basic 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 with an establishment in Quebec, no matter if you're a small or large company.
• What You Can Claim: Salaries for researchers/developers, research contracts with universities or research centers, materials used in R&D, and a portion of your overhead costs.
• Refundable Credit: If you owe less in taxes than the credit amount, you'll actually get money back!

Here's an Example: Imagine a tech startup puts $800,000 into developer salaries and R&D gear. With the CRIC Credit, that's $800,000 × 30% = $240,000 back as a refundable tax credit. This money either directly lowers your tax bill or gets you a refund.

2. Investment Tax Credit

This is a provincial credit that helps you out when you buy manufacturing and processing equipment in Quebec. The rates can go from 4% to 24%, depending on where you are and what kind of equipment you're getting. It's super beneficial for manufacturing businesses, especially those in resource-rich areas.

3. Training Tax Credit

There's a law that helps employers get back some of the money they spend on employee training through their payroll. You actually have to spend at least 1% of your payroll on training, or you'll get hit with a penalty.

Pro Tip: Tax credits can actually cover a huge chunk – 15% to 40% – of some business expenses. But here's the thing: applying for them means you need super detailed paperwork and have to follow strict rules. That's where a tax optimization expert accountant comes in handy – they'll make sure you have the best shot at approval and find every single credit you're eligible for.

5 Common Mistakes to Avoid

After receiving more than 15,000 requests from Quebec entrepreneurs for an accounting match, we identified recurring errors that cost thousands of dollars in lost deductions or penalties from Revenu Québec.

Mistake #1: Mixing Personal and Business Expenses

The Problem: Using the same credit card for both your personal shopping and business buys, or trying to claim expenses that are partly personal (like saying your cell phone is 100% for business when you actually use it 40% for personal stuff).

The Fix: Get a separate bank account and credit card just for your business. If something is used for both (like a car or phone), make sure you carefully figure out the business portion and keep good records (like a mileage log for your car or call statements for your phone).

Mistake #2: Forgetting About Training and Professional Development Costs

The Problem: Lots of entrepreneurs miss out on claiming expenses for industry conferences, online courses (like Udemy or Coursera for work skills), specialized magazine subscriptions, and professional books.

The Fix: Hold onto all receipts for any training that's directly tied to what you do now. For example, if you're a web developer and take an advanced React course, that's 100% deductible. But if you take a yoga class to de-stress, that's a personal benefit, so it's not deductible.

Mistake #3: Getting Your Vehicle Write-Offs Wrong

The Problem: Trying to deduct the entire cost of a vehicle in the year you buy it, not paying attention to the $39,000/$61,000 limits, or forgetting about the half-year rule for the first year.

Solution: If you're buying a company vehicle, get an accountant to help you correctly calculate the Capital Cost Allowance (CCA) based on its class (10.1 or 54), apply the right limit, and spread out the depreciation over several years. Making a mistake here could lead to a tax audit.

Mistake #4: Not keeping your supporting documents for 6 years

Problem: Throwing away invoices after you've filed your tax return, or not scanning those paper receipts that fade (like thermal receipts).

Solution: Revenu Québec and the CRA can check your tax returns for up to 6 years after the end of the tax year (or indefinitely if they suspect fraud). Scan all your receipts using an accounting app (QuickBooks, Wave, Momenteo) or keep them in binders labeled by year. Thermal receipts fade, so snap a photo of them right away!

Mistake #5: Missing out on available special tax credits

Problem: Not claiming R&D credits (for tech startups), investment credits (for manufacturers), or other industry-specific credits, either because you don't know about them or they seem too complicated.

Solution: Tax credits can be worth tens, or even hundreds, of thousands of dollars! A specialized accountant can find all the relevant credits for you, prepare the applications with all the right paperwork, and make sure you get the biggest refunds possible. Investing in an expert tax credit accountant usually gives you a 300% to 800% return on investment.

Photo by Olga DeLawrence on Unsplash

Keeping Your Documents: How Long and What Format

Keeping your supporting documents carefully isn't just a legal must-do, it's also your best defense if you ever get a tax audit. Here are the official rules from Revenu Québec and the CRA.

Retention Period: 6 Years Minimum

You need to keep all your accounting and tax documents for 6 years from the end of the tax year they relate to. For example, for the 2026 tax year (which ends December 31, 2026, for most businesses), you'd need to keep those documents until December 31, 2032.

Heads up: If there's fraud, tax evasion, or a disputed case, Revenu Québec can ask for documents beyond 6 years (with no time limit!). A word of caution: always keep documents for major asset purchases (like buildings or big equipment) indefinitely, even after you've gotten rid of them.

Documents You Must Keep

• Invoices and Receipts: For all deducted expenses (suppliers, purchases, general overhead).
• Bank Statements: For business accounts and professional credit cards.
• Sales Records: Issued invoices, cash reports, point-of-sale transactions.
• Proof of Income: Client contracts, purchase orders, proof of payments received.
• Payroll Records: Records of employment, pay stubs, RRQ/RQAP/CNESST contributions.
• Tax Returns: T2, CO-17, GST/QST, copies of filed returns, and acknowledgements of receipt.
• Mileage Logs: If you're deducting vehicle expenses (date, destination, kilometers, purpose of trip).
• Contracts and Leases: Commercial leases, supplier contracts, major client contracts.
• Proof of tax credits: R&D, training, and investment credit applications with supporting documents

Paper vs. digital format: both are accepted

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

• Image quality good enough to read all the details (date, amount, supplier, type of 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)
• Preferably a non-editable format (PDF) to ensure integrity

Bankeo's Recommendation: Use cloud accounting software (QuickBooks, Wave, Momenteo) that automatically captures your receipts via photo and links them to bank transactions. These tools offer secure automatic backup and make managing things much easier in case of a tax audit.

How Bankeo Helps You Maximize Your Tax Deductions

Maximizing your tax deductions while following the complex rules of Revenu Québec and the CRA requires sharp accounting expertise. That's exactly why Bankeo exists: to match you with the ideal accountant for your business, someone specialized in your industry and specific tax needs.

Bankeo's 3 Simple Steps

Step 1: You fill out our form (2 minutes)

Tell us your industry, revenue, and accounting needs (bookkeeping, declarations, tax planning, tax credits) and your preferences (budget, location, accounting software used).

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

From our network of over 1,500 accountants across France, we identify those who perfectly match your profile. We consider their sector expertise (construction, real estate, tech, restaurants, etc.), their experience with similar clients, their rates, and their client approach.

Step 3: You meet the selected accountants and choose

You'll get the full contact details of the recommended accountants, including their service catalog and pricing proposal. You choose how many accountants you want to meet (it's not a fixed number). Bankeo supports you until the mandate is signed and remains available if the relationship isn't optimal.

Why entrepreneurs trust us: 15,000+ applications received since 2023

• Free for Entrepreneurs: Our matching service is 100% free for entrepreneurs.
• Total Transparency: You receive all the information about the recommended accountant (services, rates, experience, client reviews) before committing.
• Guaranteed Industry Expertise: We only match you with accountants who have proven expertise in your industry. A construction entrepreneur will get an accountant who knows about the CCQ, work camps, and subcontracting. A self-employed worker will get an accountant who's an expert in home offices and personal tax optimization.
• Ongoing Support: If your relationship with the accountant doesn't go as planned, just contact us. We'll step in to find a solution or match you with another, better-suited accountant.

On average, entrepreneurs matched through Bankeo with a tax-specialized accountant recover an extra $5,000 to $12,000 in deductions in the very first year. Investing in a good accountant generates a 400% to 800% return on investment through tax savings and freed-up time.

Frequently Asked Questions (FAQs)

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

Nope. As a self-employed individual (sole proprietorship), your "salary" is actually your business's net profit after all expenses. You can't deduct a salary paid to yourself because that would be a double deduction. If you're incorporated (a corporation), you can pay yourself a salary or dividends based on the best tax strategy for you (check out our guide on salary vs. dividends).

2. My spouse works in my business. Can I deduct their salary?

Yep, as long as the salary is reasonable and justified for the tasks they do and the hours they work. Revenu Québec keeps a close eye on salaries paid to family members. You'll need to issue T4 and RL-1 slips, withhold source deductions, and keep records of their hours and responsibilities. If a salary is inflated without good reason, it'll be rejected during an audit.

3. What can I deduct for a home office?

If you meet the criteria (your space is used only for business or it's your main place for meeting clients), you can deduct a portion of: electricity, heating, home insurance, property taxes, mortgage interest (but not the principal you pay back), and maintenance and repairs. Figure out the proportion based on square footage: office 150 sq ft / house 1,500 sq ft = 10%. Your deduction would be: (electricity + heating + taxes + insurance + interest) × 10%.

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

Nope. Personal meals are never deductible, even if you're working from home. Only business meals with clients, suppliers, or partners are 50% deductible. Exception: meals provided at a remote work camp (construction, forestry) are 100% deductible.

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

Nope. Gym, yoga, sports, or personal wellness activities are never deductible, even if you say they help you work better. These are personal expenses. Very rare exception: a professional sports trainer who uses the membership directly for their business (demonstrations, client classes).

6. How does Capital Cost Allowance (CCA) work?

CCA lets you gradually deduct the cost of buying long-lasting assets (like vehicles, computers, and equipment) over several years, using rates set by the CRA. For example: a $2,000 computer (Class 50, 55% rate). Year 1: CCA of $1,100 ($2,000 × 55%). Year 2: CCA of $495 ($900 × 55%). And so on until it's fully depreciated. Check out our guide on CCA and depreciation classes.

7. What's new in tax for 2026 for Quebec businesses?

Here are the main changes for 2026: (1) A new ICIC credit for R&D with an enhanced rate of 30% on $1M (replacing 8 old credits). (2) The CCA limit for standard vehicles is up to $39,000 (compared to $36,000 in 2025). (3) The limit for zero-emission vehicles stays at $61,000. (4) The mileage allowance is now $0.73/km for the first 5,000 km and $0.67/km for additional kilometers.

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

At least 6 years from the end of the tax year they relate to. For example: for the 2026 tax year, keep them until December 31, 2032. In cases of fraud or disputes, Revenu Québec might ask for records older than 6 years. Paper and digital formats are fine (as long as they're readable, complete, and backed up). Use cloud accounting software to automatically keep your documents safe.

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

Not necessarily. If you're registered for GST/QST, you pay taxes on your purchases, but you can get those amounts back through input tax credits (ITCs) and input tax refunds (ITRs). The taxes you get back aren't part of your final deductible expense. Only the net amount (before recoverable taxes) is deductible on your financial statements.

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

A tax-specialized accountant knows all the legal deductions for your industry, spots special tax credits (R&D, training, investment), structures your expenses to get you the best deductions (like choosing between paying cash or financing, and timing your purchases just right), prepares an annual tax plan, and protects you if you get audited. On average, a good accountant finds an extra $5,000 to $12,000 in deductions that business owners would have missed. Find your perfect accountant with Bankeo.

Conclusion: Don't Leave Money on the Table Anymore

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

Here are the three key takeaways:

• Keep thorough records: Hold onto all your invoices and supporting documents for at least 6 years, ideally digitally with cloud accounting software.
• Know the specific rules: 100% vs. 50% deductions, 2026 CCA limits for vehicles, home office criteria, and industry-specific tax credits.
• Get expert help: An accountant who's a pro at business tax can give you a 400% to 800% return on investment by finding tax savings and freeing up your time.

Are you ready to optimize your taxes and stop leaving thousands of euros in legitimate deductions on the table? Find the ideal accountant for your business with Bankeo in less than 48 hours. It's free, fast, and there's no obligation. Join the Quebec entrepreneurs who trust our accounting matching service: 15,000+ requests received since 2023.

Sources

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