Tax-Deductible Expenses for Self-Employed Workers in Quebec: The Complete 2026 Guide

Every business expense you forget to claim is tax paid for nothing. As a self-employed worker in Quebec, you have the right to deduct every reasonable expense incurred to earn your business income. The trick is knowing which ones qualify, in what proportion, and with what supporting documents. This complete guide covers tax-deductible expenses in 2026: home office, vehicle, meals, computer equipment, training and more.

What counts as a deductible expense?

The basic rule is the same federally and provincially: an expense is deductible if it was incurred to earn business income and is reasonable in the circumstances. You report your business income and expenses on form T2125 (Canada Revenue Agency) and on schedule TP-80 (Revenu Québec).

Two principles to keep in mind:

• The personal portion is never deductible. If an expense serves both your business and your personal life (cell phone, vehicle, home), only the business-use portion can be claimed.
• No receipt, no deduction. In an audit, the CRA and Revenu Québec require supporting documents. A credit card statement alone is generally not enough.

The home office

This is often the most valuable deduction for a self-employed worker. You can claim home office expenses if one of these two conditions is met:

• your home is your principal place of business (more than 50% of the time); or
• the space is used exclusively to earn business income and you meet clients there on a regular basis.

The deductible portion is usually calculated as a percentage of the floor area used. For example, a 15 m² office in a 100 m² home entitles you to 15% of the eligible expenses:

• rent (if you are a tenant);
• electricity and heating;
• maintenance and repairs;
• home insurance and municipal and school taxes (prorated);
• mortgage interest (if you own your home — the principal itself is not deductible).

Warning: avoid claiming capital cost allowance (CCA) on your home. You could lose part of your principal residence exemption when you sell.

Note: home office expenses cannot be used to create or increase a business loss. Any excess can however be carried forward to future years.

Vehicle expenses

If you use your vehicle for business travel (meeting clients, picking up supplies, going to job sites), you can deduct the business portion of your costs:

• gas or electric charging;
• maintenance and repairs;
• insurance and registration;
• interest on your car loan or leasing costs (ceilings apply);
• capital cost allowance (CCA) if you own the vehicle.

The deductible proportion is business kilometres divided by total kilometres driven during the year. That is why keeping a mileage log matters: date, destination, business reason and distance. It is the first thing auditors ask for.

Good to know: trips between your home and a regular place of business are considered personal. If your office is at home, however, most of your business trips become eligible.

Meals and entertainment

Business meals and entertainment expenses (taking a client to a restaurant, event tickets) are only 50% deductible. In Quebec, an additional annual ceiling also applies: it is based on your gross revenue (between 1.25% and 2% depending on your sales level).

Meals you eat alone while working are not deductible — that is a personal expense, even if you are answering emails at the same time.

Equipment and depreciation

Small supplies consumed quickly (paper, ink, small tools) are fully deductible in the year of purchase. Durable assets — computers, furniture, machinery — must instead be depreciated over several years through capital cost allowance (CCA), using prescribed classes:

• Computer equipment: class 50, 55% rate;
• Furniture and equipment: class 8, 20% rate;
• Vehicles: class 10 or 10.1, 30% rate.

CCA is an optional deduction: you can defer it to a more profitable year if your income is low this year.

Quick reference table of common expenses

Expenses people think are deductible… but are not

• Your own “salary”: the money you withdraw from your business is not an expense — you are taxed on your profit, not on what is left in the account.
• Regular clothing, even if you only wear it to meet clients.
• Commuting between home and a regular place of business.
• Solo meals during working hours.
• Tickets, fines and tax penalties.

Receipts and sales taxes: two habits to build

First habit: keep all your supporting documents for six years after the end of the taxation year. A clear photo of the receipt, filed in the right place, beats a shoebox every time.

Second habit: if you are registered for GST and QST, every business expense also entitles you to input tax credits (ITCs/ITRs) — you recover the taxes paid on top of deducting the expense. To understand how it all works, read our complete GST and QST guide for self-employed workers.

How InnoBooks simplifies expense tracking

The hard part is not knowing the rules — it is keeping your records up to date all year long. InnoBooks was built for self-employed workers and small businesses in Quebec:

• ✅ Expense recording with receipt photo, category and supplier;
• ✅ GST/QST calculated automatically on every expense for your ITCs/ITRs;
• ✅ Clear reports by expense category, ready for your T2125 and TP-80;
• ✅ Built-in invoicing — income and expenses in one place (and to invoice without mistakes, here are 5 invoicing mistakes to avoid);
• ✅ Easy export for your accountant at year-end.

Frequently asked questions about deductible expenses

Can I deduct expenses if my business has no revenue yet?

Yes, as long as the business has genuinely started operating with a view to profit. Expenses incurred can create a business loss deductible against your other income (with some exceptions, such as home office expenses).

What percentage of my cell phone can I deduct?

There is no official percentage: you must estimate the business portion in a reasonable and defensible way (for example based on usage time). Many self-employed workers use between 50% and 80% depending on their situation. Be consistent from year to year.

Is an online course deductible?

Yes, if it serves to maintain or improve skills related to your current business. Training that leads to an entirely new profession is instead considered a capital or personal expense.

What if I lost the receipt?

Without a supporting document, the expense is likely to be denied in an audit. Get into the habit of photographing receipts immediately — thermal ink on cash register receipts fades within months.

Bottom line

Deducting your expenses is not aggressive tax planning: it is simply sound management. Claim everything that is reasonable and related to your business income, separate the personal portion, keep your receipts for six years, and maintain your mileage log. Your accountant will thank you — and so will your tax bill.

Ready to take control of your expenses? Try InnoBooks for free and keep every receipt, every tax amount and every report in one place.