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How to file your taxes without a T4 or when you're self-employed
Updated by Arshi Hossain March 23, 2026
KEY FINDINGS
- Self-employed? Filing taxes is much easier if you stay organized throughout the year. Proactively manage HST/GST and track your income and expenses as they occur.
- If you are simply missing your T4 information, don’t sweat. Employers file T4s directly the Canada Revenue Agency (CRA), so contact them or your employer for a status update.
- If you’re confused, there’s help out there. Online tax programs are easy to use, and professional accountants and CRA tax clinics can help make sense of even the most complicated finances while maximizing deductions.
If you’re filing your Canadian taxes without a T4 or otherwise managing self‑employment income, the process can feel confusing — but you can file accurately and on time with the right steps.
Missing slips, late employers, and irregular income are common, and the CRA has clear rules for handling all of them.
This updated 2026 guide for the 2025 tax year breaks down exactly how to file your taxes when you’re self‑employed and what to do if your T4 hasn’t arrived. From tracking income to accessing CRA tools and meeting key deadlines, here’s how to navigate tax season smoothly — even without perfect paperwork.
What should you do if your T4 is missing in 2026?
For the 2025 tax year, employers must issue your T4 slip by March 2, 2026, because February 28 falls on a Saturday and the due date moves to the next business day.
If you don’t have your slip by early March, it’s time to start following up.
How to recover missing T4 information
- Check the CRA’s My Account portal: Employers must file T4 slips with the CRA by March 2, 2026, so your T4 may already be available online even if you haven’t received it directly.
- Contact your employer or former employer: If your T4 doesn’t appear on the CRA portal, reach out to the employer to confirm it has been issued and ensure they have your correct mailing or email address. Employers are still obligated to provide your T4 even if you no longer work there.
- Call the CRA: If all else fails, contact the CRA yourself. Have your SIN, last year’s return, your address and personal details, and your employer’s name and employment dates ready. The CRA may already have the employer‑filed information or will guide you on next steps.
If you can’t access your T4 slip, don’t skip filing your taxes. Use your last pay stub to calculate approximate earnings and deductions. The CRA will review your return, so be transparent about the missing information and file an adjustment later if needed
Read more: Forgot to file your taxes last year? What you need to know
How do self-employed Canadians file taxes in 2026?
For self‑employed Canadians, staying organized is essential — not just for filing your return, but also for staying compliant with evolving CRA requirements. Here’s how to keep your tax life running smoothly in 2025–2026.
Track income and expenses all year
Use accounting software or an Excel spreadsheet to document all business income and deductible expenses as they occur. Keep all receipts and invoices for at least six years, as the CRA may request them during an audit. Digital records are acceptable and can simplify compliance.
Do you need separate bank accounts for business and personal finances?
Maintain dedicated business bank accounts and credit cards. This reduces bookkeeping errors, supports audit readiness, and helps prevent misreporting business vs. personal expenses — a common trigger for GST/HST or income tax reassessments.
What expenses can self-employed Canadians claim on taxes?
While home office costs, vehicle expenses, and business‑related meals are common deductions, the CRA has increased scrutiny on improperly claimed or poorly documented expenses, especially Input Tax Credits (ITCs) for GST/HST.
Make sure your receipts include required vendor information and that expenses have clear business purpose. When uncertain, consult CRA guidance or a tax professional.
Read more: How business insurance and claim payouts affect your taxes in Canada
When do you need to register for GST/HST in Canada?
You must register for GST/HST when your worldwide taxable revenues exceed $30,000 in a single quarter or across four consecutive quarters. Voluntary registration can be advantageous even before hitting the threshold, allowing you to claim ITCs, improve cash flow, and appear more professional to clients.
With the CRA increasing digital audits and cross‑checks (especially for e‑commerce and multi‑province sales), make sure that your filings match your bookkeeping and payroll records.
When are self-employed taxes due in Canada in 2026?
Self‑employed individuals often need to make quarterly instalment payments to avoid year‑end tax surprises. For the 2025 tax year, instalment schedules continue quarterly through March, June, September, and December 2026. Even though self‑employed Canadians have until June 15, 2026 to file their 2025 return, any taxes owed are still due on April 30, 2026, to avoid interest. Filing later does not delay payment obligations.
Read more: Small business tax and compliance deadlines in Canada (2026 Guide)
Where can you get help filing your taxes in Canada?
Tax filing can feel overwhelming — especially if you're juggling multiple slips, self‑employment income, or missing documents. Here are the most reliable support options available for the 2025 tax year.
What is NETFILE and how do you use it in Canada?
Online tax programs remain one of the quickest, easiest ways to file. They automatically apply updated CRA rules, detect common errors, and can import slips through Auto‑Fill My Return, which opens February 9, 2026.
Many platforms are intuitive enough for straightforward returns and can catch credits or deductions you might overlook.
Hire a professional
Accountants and tax preparers are especially valuable if you:
- Have self‑employment or contract income
- Claim complex deductions
- Have multiple income sources
- Need help navigating instalments, GST/HST, or amended returns
A professional ensures accuracy, compliance, and maximizes deductions — particularly important with increased CRA digital audits and cross‑checks for 2025.
Who qualifies for free tax clinics in Canada?
If you have a modest income and a simple tax situation, you may qualify for a free return through the Community Volunteer Income Tax Program (CVITP). These clinics — run by trained volunteers — operate in person and virtually and can file for you at no cost.
Visit the CRA website to find a clinic in your area.
What are the key tax deadlines for 2026 in Canada?
Here are the key deadlines and milestones to keep in mind as you prepare your 2025 tax return.
| Date | Deadline |
|---|---|
| Feb 9, 2026 | Auto-Fill My Return opens |
| Feb 23, 2026 | NETFILE opens |
| Mar 2, 2026 | T4 issuance deadline |
| Apr 30, 2026 | Tax filing & payment deadline (most individuals) |
| Jun 15, 2026 | Filing deadline (self-employed) |
| May 1, 2026 | Interest begins on unpaid taxes |
Staying organized and taking advantage of CRA tools can make tax season less stressful, whether you’re filing with a missing T4 or managing self-employment income. If in doubt, don’t hesitate to seek professional help or reach out to the CRA for guidance.
Patrick Faller, Freelance writer
Patrick is a writer, creative media producer, and award-winning journalist with a love of technology, the arts, and design. Hes passionate about consumer affairs and helping Canadians make the best possible choices when it comes to their finances. You can find him on social media @patfaller.
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