Practical resources to keep you organized and ahead of every deadline.
| Deadline | What's Due |
|---|---|
| April 30 | Personal income tax return (T1) filing and payment deadline for most individuals |
| June 15 | T1 filing deadline for self-employed individuals and their spouses (any balance owing is still due April 30) |
| 6 months after year-end | Corporate tax return (T2) filing deadline |
| 2–3 months after year-end | Corporate tax balance due (varies by corporation type) |
| Varies (monthly/quarterly/annual) | GST/HST return filing and remittance, based on your assigned filing frequency |
| 15th of each month | Payroll source deduction remittances for regular remitters |
| Last day of February | T4/T4A slips due to employees and the CRA |
| 60 days into the new year | RRSP contribution deadline for the prior tax year |
Deadlines falling on weekends/holidays generally move to the next business day. Always confirm current-year dates with the CRA or with us.
What to gather before we prepare your T1:
For bookkeeping and corporate tax clients:
View your personal tax information, benefits, and notices online.
Visit CRA My Account →Manage corporate tax, GST/HST, and payroll accounts for your business.
Visit My Business Account →Register or search Ontario businesses and file corporate documents.
Visit Ontario Business Registry →Calculate payroll source deductions for your employees.
Open the Calculator →Don't guess — ask. A quick email can save you penalties and interest.
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