In 2026, Quebec businesses can significantly reduce their tax burden by strategically deducting eligible expenses. With the new 2026 tax rules, a 2.05% indexation of amounts, and enhanced tax credits of up to 30% for R&D, understanding the available deductions has never been more crucial to optimizing your profitability.
Too many Quebec entrepreneurs pay more taxes than necessary because they are unaware of the deductible expenses they are entitled to. A study by Revenu Québec reveals that nearly 40% of small and medium-sized businesses fail to claim certain eligible deductions, leaving thousands of dollars on the table each year.
This comprehensive 2026 guide outlines all the deductible expenses for your business in Quebec, the latest tax rules, major tax credits, and how to find an accountant specializing in tax optimization to maximize your savings. Bankeo has helped over 12,000 business owners optimize their tax deductions through its network of more than 1,500 specialized accountants across Quebec.
A tax-deductible expense is a reasonable expense incurred for the purpose of earning business income. These expenses reduce your taxable income, which directly lowers the amount of tax your business owes to the federal and provincial governments.
For an expense to be eligible as a tax deduction in Quebec, it must meet these four criteria, according to Revenu Québec and the Canada Revenue Agency (CRA):
It is important to distinguish between these two tax concepts:
To optimize your tax strategy and ensure you claim all eligible deductions, consult an accountant who specializes in corporate taxation. An expert understands the nuances of Quebec tax law and can identify deductions you might have overlooked.
The Quebec government has announced several significant tax changes for 2026 that affect businesses’ deductible expenses. Here are the key changes you need to know:
The personal and corporate income tax system is indexed at a rate of 2.05% for the 2026 tax year. This indexation automatically adjusts the amounts of deductions, tax credits, and benefits to reflect the rise in consumer prices observed in Quebec.
The Quebec government has announced the phased elimination of the 100% additional deduction from an employer’s taxable income for public transit passes provided to employees. This measure will expire on December 31, 2027. Businesses therefore have until that date to take advantage of this tax benefit.
Effective January1, 2026, the overall contribution rate for the Quebec Pension Plan (QPP) will decrease from 10.8% to 10.6%, a reduction of 0.2 percentage points. This decrease will slightly reduce the payroll tax burden on Quebec employers.
For the years 2026 and 2027, a temporary exemption from contributions to the Health Services Fund (HSF) is being offered to support the agriculture, forestry, and fisheries sectors. This measure significantly reduces the tax burden on businesses in these industries.
The deduction rate under the Cooperative Investment Plan (CIP) will decrease from 125% to 100% for eligible securities acquired after March 25, 2025. This change affects cooperatives that were counting on this increased rate.
Source: Revenu Québec – Key Changes for 2026
Here are the main categories of expenses that you can fully deduct from your business income in Quebec in 2026:
Supplies needed to produce goods or provide services are 100% deductible. This includes:
Real-life example: A Montreal restaurant that purchases $45,000 worth of food inventory per year can deduct the entire amount, reducing its taxable income by $45,000.
Office supplies such as desks, chairs, and durable equipment are NOT included in this category. They should be treated as capital assets and depreciated using the CCA categories.
The gross wages paid to your employees, as well as payroll taxes, are fully deductible:
Important limitation: The salary must be reasonable for the work performed. Paying your spouse a salary of $200,000 for 10 hours of work per week would be considered unreasonable by Revenu Québec.
To properly manage your payroll and payroll taxes, check out our guide to payroll services for Quebec businesses.
The rent paid for the land or building where your business operates is 100% deductible. This includes:
Important: If you buy a building instead of renting it, the purchase cost is NOT immediately deductible. You will need to depreciate it over several years using the capital cost allowance (CCA).
Expenses related to utilities used in the course of your business activities are deductible:
Formula for mixed use: If you use a service for both business and personal purposes (e.g., a cell phone), you must calculate the deductible portion:
Deduction = Total cost × (Percentage of business use)
Example: $80/month cell phone bill, 70% business use = $56/month deduction ($672/year).
Standard commercial insurance premiums paid to protect your business are 100% deductible:
Not deductible: Personal life insurance is NOT deductible, even if you are the sole owner of the business.
Advertising expenses incurred to promote your products or services are fully deductible:
Real-world example: A construction company in Laval that spends $2,500 per month on Google Ads to generate quotes can deduct the full $30,000 per year.
Bank fees and interest related to the operation of your business are deductible:
Note: Interest on a personal loan NOT related to business activities is NOT deductible. Only the portion used for business purposes is deductible.
Fees paid to professionals for business-related advice or services are 100% deductible:
At Bankeo, we’ve helped over 12,000 business owners find an accountant specializing in tax optimization. Our network of more than 1,500 partner accountants across Quebec can help you identify all the tax deductions available to your industry. Find your ideal accountant for free.
To learn more about tax-deductible accounting services, visit our page on accounting services for small businesses.
The taxes, permits, and fees required to operate your business are tax-deductible:
For more information on business registration and permits in Quebec, read our comprehensive guide to business registration.
Certain business expenses are deductible only up to 50% of their amount. Here are the main categories involved:
Expenses incurred for business meals and entertainment are limited to 50% deductibility:
Important exceptions (100% deductible):
Real-life example: A technology entrepreneur in Montreal who spends $6,000 on client meals during the year can deduct $3,000 (50% of $6,000).
Limits in Quebec: At the provincial level, tax deductions for entertainment expenses are also capped at a certain percentage of the business’s annual revenue. A specialized accountant can help you navigate these complex rules.
When traveling for business, 50% of meal expenses are tax-deductible, while other travel expenses are 100% tax-deductible:
50% deductible:
100% tax-deductible:
Documents required by Revenu Québec:
For more information on vehicle tax planning, see our article on company vehicles and taxation.
| Category | Deductibility | Examples |
|---|---|---|
| Supplies | 100% | Raw materials, cleaning supplies, inventory |
| Salaries | 100% | Gross wages + RRQ/RQAP contributions |
| Business lunch | 50% | Client dinner, team dinner |
| Meals on the go | 50% | Meals while on a business trip |
| Advertising | 100% | Google Ads, Facebook Ads, radio, television |
| Accounting fees | 100% | Preparation for T2/CO-17, bookkeeping |
| Travel and Transportation | 100% | Airplane, train, hotel, car rental |
| Insurance | 100% | Liability insurance, property, business interruption |
Using a vehicle for your business generates several deductible expenses, but the rules are strict and require thorough documentation.
You have two options for calculating your deductible vehicle expenses:
1. Detailed Method (Mileage Log)
You keep a detailed log of all your business trips and calculate the percentage of business use:
Business percentage = (Business miles / Total miles) × 100
You then apply this percentage to all your vehicle expenses.
2. Simplified method (ARC mileage rate)
You use the mileage rates set by the CRA (updated annually). For 2026, these rates are generally around $0.68/km for the first 5,000 km and $0.62/km thereafter.
Using the itemized method, you can claim the business portion of these expenses:
2026 Federal Limits:
Example: A self-employed individual who drives 30,000 km per year—21,000 km of which are for business purposes (70%)—and has $8,000 in total vehicle expenses can deduct $5,600 (70% of $8,000).
| Criterion | Purchase | Rental |
|---|---|---|
| Deduction for Year 1 | DPA: 30% of the cost (up to $37,000) | 100% of payments (up to $950 per month) |
| Cash flow | High initial out-of-pocket cost | Lower monthly payments |
| Tax limits | Maximum cost: $37,000 | Max rent: $950/month |
| Simplicity | Complex DPA calculations | Direct deduction of payments |
| Flexibility | Owner, may resell | Return the vehicle at the end |
For an in-depth tax analysis of your specific situation, see our article oncorporate tax optimization.
If you run your business from your home, you can deduct a portion of your housing expenses. However, the rules in Quebec are more restrictive than the federal rules.
To claim a home office deduction, your workspace must meet at least one of these two criteria:
Important: The space must be used exclusively for business purposes. An office that also serves as a guest room will not be accepted by Revenu Québec.
You can deduct a proportional portion of these expenses:
Not deductible:
Here is the formula:
Deduction = (Office area / Total residence area) × Total expenses × 50%
Quebec restriction: Quebec limits the amount of expenses related to a home office or other workspace to 50%. This limit does NOT apply at the federal level.
Example with figures:
Federal calculation:
(15 / 100) × $24,000 = $3,600
Provincial calculation (Quebec):
(15 / 100) × $24,000 × 50% = $1,800
You can therefore claim a $3,600 federal deduction and a $1,800 provincial deduction.
Quebec limits home office expenses to 50%, unlike the federal government, which allows 100% if eligible. A specialized accountant can help you maximize this deduction by properly structuring your tax returns.
Expenses incurred before the official start of your business operations may be deductible under certain conditions.
Deductible start-up costs include:
You can deduct up to $5,000 in start-up costs in the first year. If your costs exceed this amount, the balance must be amortized over a 10-year period.
Example: You have $8,000 in startup costs:
To claim these deductions, you must:
To learn more about incorporation and its tax benefits, check out our guide to incorporating a business in Quebec.
Durable goods used in your business cannot be deducted immediately. They must be depreciated over several years through capital cost allowance (CCA).
The CCA allows you to spread the cost of an asset over its useful life. Each year, you deduct a percentage of the remaining cost based on the asset’s CCA class.
| Criterion | Current expenditure | Fixed assets |
|---|---|---|
| Cost | < 500 $ | $500–$1,000 |
| Treatment | 100% immediate deduction | Depreciation (DPA) over several years |
| Examples | Supplies, small tools, office expenses | Equipment, vehicles, computers, machinery |
| Service life | Court terme (< 1 an) | Long-term (> 1 year) |
Here are the most common DPA categories for Quebec SMEs:
Half-Year Rule: In the first year, you can deduct only half of the standard CCA rate. For example, for a computer (category 50–55%), you will deduct 27.5% in the first year.
For a complete explanation of DPA categories and how to use them strategically, read our guide on depreciation and DPA categories.
In addition to tax deductions, Quebec offers several tax credits that directly reduce your tax bill. These credits are often refundable, which means that even if your business owes no tax, you will receive a refund.
The R&D tax credit is one of the most generous in the world. It is designed to stimulate innovation among Quebec businesses.
Loan rate:
Target industries:
Eligible expenses:
Example: A tech startup in Quebec City that spends $500,000 on R&D salaries can receive a tax credit of $150,000 (30% of $500,000).
To maximize your R&D credits, check out our detailed guide to R&D tax credits in Quebec.
Updated in 2026, this loan program is designed to support information technology companies.
Credit rate: Up to 30% of eligible wages
Cap: $25,000 per employee per year
Eligible activities:
This loan encourages the purchase of manufacturing and processing equipment.
Rates vary depending on the type of equipment and the region of Quebec.
For more information, see our article on the investment tax credit.
| Credit | Rate | Ceiling | Target Industries |
|---|---|---|---|
| R&D | 30% (≤$3 million), 14% (>$3 million) | None | Technology, manufacturing, pharmaceuticals |
| CDAE | 30% | $25,000 per employee per year | Information Technology |
| Investment | Variable | Variable | Manufacturer, equipment |
| Training | Variable | Variable | All industries |
Business owners who work with an accountant specializing in tax optimization save an average of $8,500 per year in taxes. Bankeo connects you for free with the accountant best suited to your situation.
Find my tax accountantSome expenses can NEVER be deducted, even if they seem related to your business. Here are the pitfalls to avoid:
Personal expenses are not tax-deductible, even if you are self-employed:
All fines and penalties imposed by the authorities are NOT deductible:
Pension accounts and amortization funds are NOT deductible, unless expressly permitted by the Tax Act.
The following financial items are not deductible:
To understand the tax treatment of dividends versus wages, check out our article on wages versus dividends for entrepreneurs.
Here are some proven strategies for maximizing your tax deductions in Quebec:
The key to successful tax planning is thorough documentation:
To choose the right software, check out our comparison of the best accounting software in Quebec.
For more information on record-keeping requirements, read our guide to retaining accounting records in Quebec.
This separation is crucial to avoid problems during an audit:
To set up your accounting system properly, check out our guide on how to effectively manage business accounting.
An accountant specializing in corporate tax can save you far more than their fees:
Bankeo has helped more than 12,000 business owners maximize their tax deductions through its network of over 1,500 specialized accountants across Quebec. Our satisfaction rate exceeds 95%.
To find a qualified tax specialist, check out our guides:
The timing of your purchases can affect your deductions:
Each industry in Quebec has its own specific deductible expenses. Here is an overview for the major industries:
To find an accountant specializing in construction, use our free matching service.
To optimize your tech startup's tax situation, find a specialized accountant for free.
To understand the difference between operating expenses and capital expenditures in real estate, consult an accountant who specializes in rental property management.
For the unique aspects of the restaurant industry, find an accountant who specializes in the restaurant industry.
Fully deductible expenses include supplies and inventory, wages and payroll taxes, commercial rent, utilities (electricity, internet), commercial insurance, advertising, bank fees and interest on business loans, professional fees (accountants, lawyers), and business taxes/licenses. These expenses must be reasonable, necessary, documented, and directly related to your business activities.
No, business meals are generally only 50% deductible. This limit applies to meals with clients, team meals, and entertainment expenses. Exceptions: meals at remote construction sites and promotional events open to the public are 100% deductible.
First, calculate the proportional portion: (office area / total home area) × total expenses. In Quebec, then multiply by 50% because the province limits home office deductions to 50%. At the federal level, you can deduct 100% of the proportional portion if eligible. Your space must be your primary place of business (50% or more of the time) or be used to meet with clients on a regular basis.
Yes, you can deduct up to $5,000 in startup costs in the first year. If your costs exceed this amount, the balance must be amortized over 10 years. Eligible expenses include: market research, legal fees for incorporation, REQ registration, consultations with professionals, and searching for business premises. You must keep all receipts and demonstrate the connection to the business project.
A deduction reduces your taxable income. If you claim a $10,000 deduction and your tax rate is 26.5%, you save $2,650. A tax credit directly reduces the amount of tax you owe. A $3,000 tax credit reduces your tax bill by $3,000 right away. Credits are therefore more advantageous than deductions.
In Quebec, you must keep all your accounting records, invoices, and receipts for six years. This period begins at the end of the relevant tax year. For example, for the 2026 tax year, you must keep these documents until December 31, 2032. Revenu Québec may audit your tax returns for this period and require you to provide supporting documentation.
No, ordinary business attire is NOT deductible, even if you meet with clients. Exception: Mandatory uniforms or specialized clothing required for your job are deductible (e.g., medical scrubs, safety boots, protective clothing). The clothing must be specifically designed for work and not suitable for everyday wear.
No, fines or penalties are not tax-deductible. This includes: traffic violations (speeding, illegal parking), tax penalties for late filing, municipal fines, and any other penalties imposed by the authorities. The basic principle is that fines are punishments, not eligible business expenses.
The Quebec R&D tax credit provides a 30% credit on the first $3 million of eligible expenses, and 14% on amounts above that. Eligible expenses include: salaries of employees assigned to R&D, R&D subcontracts, and materials used in projects. This credit is refundable, which means that even if you have no tax liability, you will receive a refund. Applications are complex and generally require the assistance of a specialized accountant.
Absolutely. Business owners who work with an accountant specializing in tax optimization save an average of $8,500 per year in taxes. An expert knows all the eligible deductions for your industry, can structure your compensation in the most tax-efficient way (salary vs. dividends), identify the tax credits you’re entitled to, and strategically plan your purchases and expenses. Accounting fees are also 100% deductible, which reduces their actual cost by 26.5% (average SME tax rate).
An accountant specializing in corporate tax knows all the tax deductions available to your industry. Bankeo connects you for free with an expert who will help you maximize your tax savings.
Find my tax expertMaximizing your tax-deductible expenses is one of the most effective tax strategies for reducing your tax bill in Quebec in 2026. With the new tax rules (2.05% indexation, FSS exemption for agriculture, forestry, and fishing, and enhanced R&D credits of up to 30%), it is crucial to be aware of all the deductions you are entitled to.
Key takeaways:
To help you maximize your tax deductions based on your specific business situation, Bankeo matches you with the perfect accountant in less than 48 hours. Our network of over 1,500 specialized accountants across Quebec has helped more than 12,000 business owners maximize their tax savings.
Find your tax accountant for free today.
For more information, check out our guide on how to choose the right accountant for your business.
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