Tax season ended for most Canadians on April 30. If you are self-employed, you still have time to file, but “having time to file” and “having no outstanding obligations” are two very different things, and that gap is exactly where most self-employed Ontarians get hurt.
According to the CRA, self-employed individuals have until June 15, 2026, to file their personal income tax return, although any balance owing was due April 30, 2026.
This article is for freelancers, contractors, tradespeople, side hustlers, consultants, and anyone earning income outside of a traditional T4. If the CRA considers you self-employed, your tax season is not over yet.
Are You Actually Self-Employed?
More people qualify than they realize. You are self-employed if you work without an employer directing you and without receiving a T4 for that income. That includes freelancers, consultants, tradespeople, Uber and DoorDash drivers, Etsy sellers, coaches, tutors, photographers, and therapists who invoice clients directly.
It also includes anyone who holds a T4 job and does self-employed work on the side. A few thousand dollars of weekend income still counts.
One important update: since 2025, certain digital platforms such as Uber, DoorDash, and Etsy may be required to report seller or service-provider information to the CRA under reporting rules. It is important to ensure your return accurately reflects all income earned.
The Most Expensive Mistake Self-Employed Canadians Make
Your filing deadline is June 15, 2026. Your payment deadline was April 30, 2026.
These are two different dates, and the CRA does not treat them the same way. You have until June 15 to submit your return without a late-filing penalty, but if you owed money for 2025, that balance was due April 30. The CRA has been charging prescribed interest on outstanding balances since May 1.
June 15 is not a free extension. It is extra time to file, with interest running the entire time.
If you have not paid yet and you owe money, pay a reasonable estimate now and reconcile when you file. The CRA would rather receive a partial payment early than a full payment late.
What You Are Filing: Form T2125
Self-employed income is reported on Form T2125, the Statement of Business or Professional Activities, which attaches to your T1 personal return. Your net self-employment income flows to Line 13500 and is added to any other income you earned in 2025—employment income, investments, rental income, and other sources—to determine your total tax owing. If you have more than one self-employed activity, you file a separate T2125 for each.
Self-Employed Filing Checklist
Before June 15, make sure you:
✔ Gather all income records
✔ Track business expenses
✔ Review home office and vehicle deductions
✔ Confirm your HST/GST obligations
✔ Check if instalment payments apply
✔ File your T2125 correctly
✔ Keep receipts and supporting documents
Deductions Most People Are Not Claiming Fully
Every legitimate business expense reduces your taxable income before tax is calculated, and it reduces your CPP contributions owing too, which matters more than most people expect.
Home Office
If a dedicated space in your home is used regularly and exclusively for business, you can claim a proportional share of eligible expenses such as utilities, property taxes, home insurance, maintenance, and, where applicable, rent or qualifying mortgage-related expenses based on the size of your workspace relative to your home. Documentation is essential, as home office claims are commonly reviewed by the CRA.
Vehicle
You can deduct the business-use percentage of gas, insurance, maintenance, repairs, and lease payments, but only with a mileage log. Without adequate mileage records, the CRA may deny some or all of the deduction.
The passenger vehicle Capital Cost Allowance (CCA) limits and deductible lease cost limits are updated periodically. Confirm the current limits at Canada.ca before filing.
Phone and Internet
Deduct the business-use portion. If 60% of your phone use is for work, claim 60% of the bill.
Professional Fees
Accounting, legal, bookkeeping, and other professional services incurred to earn business income are generally deductible.
Software Subscriptions
Software and online tools used in your business may also qualify as deductible business expenses.
Advertising and Marketing
Social media advertising, website hosting, printed marketing materials, and other promotional expenses used to generate business income are generally deductible.
Equipment and Capital Assets
Computers, cameras, tools, and similar purchases are generally not deducted in full during the year they are purchased. Instead, they are normally claimed over time through Capital Cost Allowance (CCA). Missing eligible CCA claims is one of the most common self-employment tax mistakes.
Bad Debts
If you previously reported business income that later became uncollectible, you may be able to claim a deduction for qualifying bad debts.
Professional Development
Courses, training, certifications, and up to two eligible business-related conventions per year may be deductible when they relate directly to your business activities.
Keep all receipts, invoices, and logs for six years. The CRA can request documentation supporting any amount claimed on your return.
The CPP Reality No One Warns You About
Employees split CPP contributions with their employer, half each. When you are self-employed, there is no employer. You pay both portions yourself.
For 2025, the combined CPP contribution rate for self-employed individuals was 11.9% on contributory earnings, subject to the applicable annual limits. The maximum CPP contribution for many self-employed individuals in 2025 was approximately $7,735, depending on earnings and CPP enhancement rules.
Two things soften this.
First, CPP is calculated on your net income after deductions, so every dollar of legitimate business expenses reduces CPP owing.
Second, the employer-equivalent portion is deductible on your personal tax return.
If your April 30 tax bill was larger than expected, CPP is often one of the reasons.
HST/GST — A Separate Obligation Many People Miss
If your taxable supplies exceed $30,000 over four consecutive calendar quarters, you may be required to register for GST/HST. The small supplier threshold is measured on a rolling four-quarter basis rather than by calendar year, so some businesses can exceed it mid-year without realizing it.
Because not all revenue is treated the same way for GST/HST purposes, registration requirements can vary depending on the nature of your activities and income sources.
If registration is required, specific deadlines and collection obligations may apply. Once registered, you may be required to charge GST/HST on taxable supplies and remit the tax collected to the CRA.
If GST/HST should have been collected but was not, the CRA may assess tax, interest, and penalties in certain circumstances.
If you are approaching the small supplier threshold and are unsure whether registration applies to your situation, it is worth reviewing your circumstances before assuming you are exempt.
If you are already registered for GST/HST, be sure to review your filing and payment deadlines carefully. Many annual filers with a December 31 fiscal year-end have obligations around June 15, but filing requirements and deadlines can vary depending on reporting periods and individual circumstances.
A Note on Instalment Payments
If your net tax owing exceeded $3,000 in 2025 and in either of the two preceding years, the CRA may require quarterly instalment payments toward your 2026 taxes.
The next instalment deadline is June 15, 2026, which happens to be the same day as the self-employed filing deadline, but it is a completely separate obligation.
If you received an instalment reminder from the CRA earlier this year, review it carefully. Missing required instalment payments can result in interest charges and, in some cases, instalment penalties.
Watch Out for CRA Scams — Especially Right Now
Tax season is peak season for fraud, and the CRA has repeatedly warned Canadians about impersonation scams.
Fraudsters send text messages, emails, and phone calls using official-looking CRA branding to pressure people into clicking links or sharing personal information.
The CRA will never send a refund by e-transfer or text message. It will never ask for your SIN, banking information, or credit card details by email or voicemail. It will never threaten arrest or demand payment using cryptocurrency or gift cards. It will not contact taxpayers through WhatsApp or similar messaging apps to request personal information.
If something feels suspicious, do not click.
Contact the CRA directly at 1-800-959-8281 or access CRA My Account through Canada.ca using a browser you open yourself.
To report fraud, contact the Canadian Anti-Fraud Centre at 1-888-495-8501 or visit antifraudcentre.ca.
Do not let deadline pressure push you into a decision you cannot undo.
This article is intended for general informational purposes only and should not be considered tax, legal, or accounting advice. Every situation is different. Consult a qualified tax professional regarding your specific circumstances.
At The TaxForce, we work with self-employed individuals, freelancers, tradespeople, and side-hustle earners across Ontario to help ensure their returns are complete, accurate, and optimized for available deductions.
If June 15 is approaching and you are unsure whether your return is complete, our team can help you understand your obligations, identify available deductions, and stay compliant with CRA requirements.
Book a consultation at TheTaxForce.ca or call 226-776-1219.
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