Full 2026 Tax Year Timeline
See your federal + provincial tax estimate before you file.
Use the Canada Income Tax Calculator →The RRSP Deadline Is Not the Tax Filing Deadline
This is one of the most common points of confusion in the Canadian tax calendar. Your RRSP contribution deadline for a given tax year is 60 days after 31 December — typically landing on 1 or 2 March of the following year, adjusted for leap years — which is almost two full months before the 30 April tax filing deadline. Many people mistakenly wait until they're preparing their return in April to think about RRSP contributions, by which point the deadline for that tax year has already passed.
Contributions made in the first 60 days of a new calendar year can be applied to either the prior tax year or the current one — giving you some flexibility, but only within that narrow window.
Self-Employed? Your Filing Deadline Extends, But Not Your Payment Deadline
Self-employed individuals (and their spouse or common-law partner, even if the spouse isn't self-employed) get until 15 June to file their return — a genuinely useful two-and-a-half-month extension over the standard date. But this extension applies only to filing. Any tax you owe is still due by the standard 30 April deadline, and interest starts accruing from that date regardless of when you actually file.
Who Pays by Quarterly Instalments?
If your net tax owing exceeds the CRA's instalment threshold in the current year and in either of the two previous years, the CRA generally requires you to pay by quarterly instalments — 15 March, 15 June, 15 September, and 15 December — rather than settling everything in one payment when you file. This most commonly affects the self-employed, retirees with significant pension or investment income, and anyone whose income isn't fully covered by source withholding.
Penalties for Filing or Paying Late
| Situation | Penalty |
|---|---|
| Late filing (first offence, tax owed) | 5% of balance owing, plus 1% for each full month late, up to 12 months |
| Repeat late filing (penalty charged in any of the prior 3 years) | Rate can double to 10%, plus 2% per month, up to 20 months |
| No tax owed / refund due | Generally no penalty for filing late, but you delay receiving any refund or benefit payments tied to your return |
| Late payment (even if filed on time) | Daily compound interest on the outstanding balance from the original due date |
Even if you can't pay in full, always file on time — the late filing penalty is entirely separate from and additional to interest on unpaid tax, so filing late compounds the cost significantly compared to filing on time and paying what you can.
Frequently Asked Questions
Deadlines shift to the next business day when they fall on a weekend or holiday. Always confirm current dates on the CRA website.