A practical guide to the Canadian compliance year
The Canadian compliance calendar runs across CRA, Corporations Canada (or your provincial registrar), and CIPO on different cycles. Understanding which deadline matters most to your business — and when — is the first piece of work for any new Canadian client. Below is the broad rhythm we plan client engagements around.
T1 — the personal tax season
The T1 personal income tax return is due by April 30 each year (June 15 for self-employed, but any balance owing is still due April 30). Late filing produces an immediate 5% penalty plus 1% per month for up to 12 months, and the penalty doubles on the second late filing. We start client T1 preparation in February, building from T4, T4A, T5, T3 and RRSP slips as they arrive.
T2 — the corporate tax cycle
A T2 corporate return is due six months after the corporation's fiscal year-end. Tax payable is generally due two or three months after year-end (sooner than the return itself), so the T2 doesn't drive cash-flow planning — quarterly instalments do. CRA's normal reassessment window is three years from the original notice of assessment for Canadian-controlled private corporations (CCPCs) and four years for non-CCPCs. Where CRA establishes misrepresentation, there is no limitation.
GST/HST — the registration trap
The CAD 30,000 small-supplier threshold catches more businesses than people realise. Cross it in one quarter, or cumulatively over four consecutive quarters, and registration is mandatory from that point. Late registration triggers backdated assessments of GST/HST that should have been collected. We monitor revenue trajectory for clients approaching the threshold and pull the registration trigger before the trap closes.
Payroll — the unified federal cycle
Unlike many jurisdictions, Canada consolidates payroll under CRA. Monthly remittances of CPP, EI and income tax withholding flow through a single PD7A voucher. Annual reconciliation is the T4 slip set, due by the last day of February. Where you have Quebec staff, parallel remittances flow to Revenu Québec and produce RL-1 slips. We close out year-end by mid-February so T4s arrive before clients' personal tax filings begin.
Corporations Canada / provincial annual returns
Every Canadian corporation files an annual return with its incorporating registry — Corporations Canada for federally-incorporated companies, the provincial registrar otherwise. This is separate from the T2 corporate tax return. Filing late results in dissolution exposure: federally, repeated non-filing leads to administrative dissolution. We track every client's annual return deadline alongside CRA deadlines.
Where CIPO fits
Trademark protection is event-driven, not calendar-driven. The right time to file is when you adopt a brand, before you build commercial goodwill in it. Canadian trademarks are now registered for ten-year terms (changed from fifteen in 2019) and renew on a ten-year cycle. We set renewal reminders twelve months ahead and handle filings through CIPO's online portal.
Section 216 for overseas Canadian landlords
If you own Canadian rental property and live abroad, the default treatment is 25% withholding on gross rent — usually punitive. A Section 216 election lets you file a Canadian return on the net rental income (after expenses, mortgage interest, capital cost allowance) at graduated rates. The election must be filed within two years of year-end. Most non-resident landlords are better off under Section 216; we make the election and file the return remotely for clients across Pakistan, the UK, the UAE, Saudi Arabia and elsewhere.
How we work with you
Our typical Canadian engagement combines monthly bookkeeping in QuickBooks Online or Xero with quarterly compliance reviews and annual T2 plus T1 preparation. For overseas Canadians, we set up a secure document folder and handle the Canadian side end-to-end. Where filings require a Canadian-resident officer or signatory, we coordinate with local counsel.