June 15 is the filing deadline for self-employed Canadians — the last date you can submit your T1 personal return without incurring a late-filing penalty (assuming you paid any balance owing by April 30). Here is your June 15 preparation checklist.
Confirm Your April 30 Payment
Before focusing on filing, verify your April 30 payment was received by the CRA. Check your CRA My Account for the credit on your account. If you have a balance showing in My Account from before filing, it may represent the balance still owing. Once you file your T1, the CRA reassesses and applies your payment against the actual amount.
Gather All Documents
- ☐ All T4 slips (employment income)
- ☐ T4A slips from clients (if any were issued)
- ☐ T5 slips (investment income, dividends, interest)
- ☐ RRSP contribution receipts (for contributions up to March 3, 2026)
- ☐ Business revenue total (from invoices and bank records)
- ☐ Business expense totals by T2125 category
- ☐ Home office calculation: square footage, expense amounts
- ☐ Mileage logbook for vehicle expenses
- ☐ CCA schedule if you purchased equipment during the year
- ☐ Charitable donation receipts
- ☐ Medical expense receipts (if claiming)
- ☐ Prior year’s notice of assessment (for RRSP room confirmation)
Complete Your T2125
T2125 is the core form for self-employed filers. Working through your tax software, enter:
- Business gross revenue (not including GST/HST collected)
- All expense line items with your totals from the year’s records
- Home office deduction (Part 7) using square footage calculation
- CCA for any business assets purchased during the year (Part 8)
Double-check: is your home office deduction less than or equal to your net income before home office? If not, it is limited and the excess carries forward — your tax software handles this automatically.
Review the Key Numbers Before Submitting
- ☐ Does your gross revenue on T2125 match the total of your invoices? Reconcile any discrepancies.
- ☐ Does the RRSP deduction match your contribution receipts?
- ☐ Is CPP calculated correctly? (Schedule 8 in your tax software)
- ☐ Is the balance owing or refund consistent with what you estimated for April 30?
- ☐ Is your filing address current? CRA sends assessments and cheques by mail.
NETFILE and Submission
File using NETFILE through your certified tax software (Wealthsimple Tax, TurboTax, UFile, H&R Block). Steps:
- Confirm your tax software is NETFILE-certified for 2025 returns (current year)
- Enter your NETFILE Access Code (on your prior year’s notice of assessment, or in CRA My Account)
- Submit — you receive a CRA confirmation number immediately if accepted
- Save the confirmation number and a copy of your completed return for your records
After Filing
- ☐ Check CRA My Account for your notice of assessment — usually issued within 2–8 weeks
- ☐ Review the assessment for any changes from your filed return
- ☐ If a balance remains unpaid, the assessment will show the total owing plus interest — pay promptly
- ☐ If you expect the CRA to ask about instalment requirements for 2026, confirm you are setting aside enough quarterly
Frequently Asked Questions
Can I use CRA’s My Account to auto-fill my return?
Yes — most tax software supports Auto-fill my return (AFR), which imports your T4, T5, RRSP, and other slips directly from CRA’s records. This reduces manual entry and eliminates transcription errors. Enable it in your tax software when prompted. Note: AFR typically does not include your T2125 business income — you still enter that manually from your records.
What if I am waiting on a T4A from a client?
T4As are due to be issued by the end of February. If you have not received one by late May, contact the client — they may have forgotten to issue it. You must report all self-employment income regardless of whether you receive a T4A. The absence of a T4A does not excuse the income from being reported.
Is there any reason to file before June 15 if I already paid on April 30?
Yes. Filing earlier starts the clock on your notice of assessment, which triggers any refund processing, confirms your RRSP room for the following year, and lets you access updated benefit calculations. If you have a refund or zero owing, file as early as possible — no reason to wait until June 15.