Sole Proprietor Tax Filing in Canada
Running your own business does not have to mean complicated taxes. Our team and our tax software file your complete return.
A sole proprietorship is the simplest business structure in Canada, but the tax return is more involved than a standard employment return. Your income is not automatically reported to the CRA. Your deductions need documentation. And your GST/HST obligations depend on your revenue. T.U.A handles every part of your sole proprietor tax filing so you can stay focused on running your business.
File My Sole Proprietor Return With T.U.AComplete Return Handled
Your T2125, your T1, and your CPP contributions, all prepared by our accountants and our tax software.
Every Deduction Claimed
Vehicle, home office, and professional fees, our team applies the deductions that are actually available to you.
No Tax Knowledge Needed
You provide your income and expense records. Our accountants and our tax software handle every form and rule.
What Is a Sole Proprietorship in Canada?
Sole proprietorship means there is no legal separation between the owner and the business. This is the default structure for Canadians earning business or freelance income. You do not need a corporation to operate a business. Your business income flows directly through to your T1 personal return via Form T2125.
The tradeoff for this simplicity is that you are personally liable for any business debts. Your income is also taxed at personal marginal rates, meaning you do not have access to the small business deduction that corporations use.
What Taxes Does a Sole Proprietor Pay in Canada?
You pay federal and provincial income tax at your personal marginal rates. You also pay both the employee and employer portions of CPP contributions. In 2025, that is 11.9 percent of your net self-employment income, up to the annual maximum.
Unlike employees who have tax deducted from every paycheque, sole proprietors pay their tax themselves. If your tax owing exceeded $3,000 in both of the prior two years, the CRA requires you to make quarterly tax instalments throughout the year.
How Do You Report Sole Proprietor Income to the CRA?
Your business income is reported on Form T2125 inside your T1 personal return. The T2125 captures your gross revenue and subtracts your eligible expenses to arrive at your net business income.
If you have more than one business activity, you must file a separate T2125 for each one. Our accountants and our tax software prepare your T2125 as part of your complete filing, ensuring all income is reported correctly and all eligible expenses are deducted.
What Business Expenses Can a Sole Proprietor Deduct?
The CRA allows sole proprietors to deduct expenses that are reasonable and incurred to earn business income. Common deductible categories include advertising and marketing costs, business insurance premiums, professional membership fees, office supplies, software subscriptions used for business, professional development directly related to your work, accounting and legal fees, and bank charges on your business account.
Vehicle expenses are deductible based on the percentage of kilometres driven for business versus total kilometres driven in the year. A mileage log is required to support the claim. Meals and entertainment expenses are deductible at 50 percent of the actual cost when the event had a genuine business purpose and is documented.
The most commonly missed deduction for sole proprietors is the correct application of vehicle expenses. Many business owners either miss the deduction entirely or estimate the business percentage without keeping records. Our accountants and our tax software ensure these are calculated properly.
Running a sole proprietorship means you pay both sides of CPP contributions. In 2025, that is 11.9 percent of your net business income. Getting every eligible deduction on your T2125 is not optional, it is how you control what you actually owe.
Does a Sole Proprietor Need to Register for GST/HST?
Registration is required once your revenue exceeds $30,000 in four consecutive quarters. You must register within 29 days of hitting that threshold and begin charging sales tax to your clients.
Voluntary registration below $30,000 allows you to claim input tax credits on business expenses, getting back the sales tax you paid. T.U.A can manage your HST/GST filing obligations alongside your personal return.
What Is the Tax Filing Deadline for Sole Proprietors?
Sole proprietors and their spouses or common-law partners have until June 15 to file their T1 return. However, any tax balance owing is due April 30, not June 15. Interest accrues daily from May 1 on any unpaid balance regardless of when the return is filed.
It is strongly recommended to maintain a dedicated business bank account and a dedicated business credit card to keep your personal and business finances clearly separated. We recommend you upload your records in February or early March.
Sole Proprietor vs Incorporation, What Is the Tax Difference?
A corporation pays a 9 percent small business rate on its first $500,000 of active business income in most provinces. A sole proprietor pays personal marginal rates, which can exceed 50 percent at higher income levels.
Incorporation typically makes sense when your net business income reaches $80,000 to $100,000. If you are considering incorporating, you can book a consultation with T.U.A to discuss your specific situation.
How T.U.A Files Your Sole Proprietor Tax Return
Our intake for sole proprietor clients captures your gross business revenue for the year, your categorized business expenses, your vehicle records, and any HST/GST account information. You upload your records through the T.U.A app, and our accountants and our tax software prepare your complete T2125 and T1 return.
Your Business Deserves a Professional Return
Upload your records and let our accountants and our tax software handle your complete sole proprietor filing. Maximum refund guaranteed.
Frequently Asked Questions
Clients upload their tax documents through the T.U.A app. Our accountants and our tax software prepare and file their return on their behalf. T.U.A is not DIY software. It is a professional tax filing service delivered digitally.