Resource
Tax filing calendar
Key personal and corporate deadlines across all three countries.
Tax Filing Calendar
A tax filing calendar maps every return your business owes across the year, with each deadline expressed relative to your accounting period rather than a fixed date — because most corporate deadlines move with your year end.
Personal tax deadlines are usually fixed. Corporate ones usually are not — they are set relative to your accounting period, which is why two businesses in the same country can have completely different filing calendars.
United Kingdom
- Self-Assessment online filing and balancing payment by 31 January
- Payments on account on 31 January and 31 July where they apply
- Corporation Tax payment nine months and one day after the period end
- Company Tax Return within twelve months of the period end
- VAT returns and payment on your assigned quarterly or monthly cycle
- Annual accounts and confirmation statement to Companies House
United States
- Partnership and S-corporation returns by the fifteenth day of the third month after year end
- C-corporation and individual returns by the fifteenth day of the fourth month
- Quarterly estimated tax payments across the year
- State income tax returns, which do not always follow the federal deadline
- Sales tax returns on each state's assigned frequency
- Extensions, which extend the filing date but not the payment date
Canada
- T1 personal return by 30 April, or 15 June for self-employed individuals
- Balance owing due 30 April regardless of the filing deadline
- T2 corporate return within six months of the fiscal year end
- Corporate tax balance due two or three months after year end depending on status
- GST/HST returns on your assigned annual, quarterly or monthly cycle
- Instalment payments where the prior-year threshold is exceeded
Deadlines falling on a weekend or public holiday usually move to the next business day, and several of these depend on your specific registration. We build a dated calendar per client rather than relying on a generic one.
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