CA·Tax year 2025 · Filing 2026

Canada tax deadlines 2026.

Every individual and self-employed income tax deadline for Canada in 2026. Plus recurring VAT / GST / sales tax filings. Each deadline links to notes on how to file, what people miss, and matching open tax rules.

Annual deadlines

2 this year

Recurring filings

VAT / GST / Sales tax

GST/HST Return

Canada

Quarterly

Canadian GST/HST return. Quarterly by default; annual for small suppliers under $1.5M; monthly for high-volume.

Open tax rules for Canada

Prepare this return with open-source skills

These skills are in the OpenAccountants repo. Add them to your AI agent and they handle the computation.

ca-fed-t1-return.mdCA

Use this skill whenever asked about a Canadian federal T1 General individual income tax return for a self-employed sole proprietor. Trigger on phrases like "T1 return", "personal tax Canada", "federal tax brackets", "basic personal amount", "CPP self-employed", "CPP2", "self-employment tax Canada", "net income", "taxable income", "federal tax calculation", "non-refundable credits", "instalment payments", or any question about computing federal tax for a self-employed individual in Canada. ALWAYS read this skill before touching any T1 return work.

canada-transfer-pricing.mdCA

Use this skill whenever asked about Canada transfer pricing rules, documentation requirements, or CRA transfer pricing compliance. Trigger on phrases like "transfer pricing Canada", "Canadian TP documentation", "CRA transfer pricing", "master file Canada", "local file Canada", "CbCR Canada", "APA Canada", "Section 247", "Form T106", "contemporaneous documentation Canada", or any question about intercompany pricing for Canadian entities.

canada-payroll.mdCA

Use this skill whenever asked about Canadian payroll, source deductions, CPP contributions, EI premiums, or employer obligations in Canada. Trigger on phrases like "source deductions", "CPP", "Canada Pension Plan", "CPP2", "EI", "employment insurance", "T4", "TD1", "payroll deductions", "CRA payroll", "remittance", "ROE", "record of employment", "statutory holiday pay", "vacation pay Canada", "minimum wage Canada", "provincial tax", "payroll Canada", "PD7A", "remitter type", or any question about running payroll in Canada. This skill covers federal rules; Quebec (QPP/QPIP) differences are noted but not fully detailed. ALWAYS read this skill before processing any Canadian payroll work.

ca-fed-t1135.mdCA

Use this skill whenever asked about Canada Form T1135, Foreign Income Verification Statement, specified foreign property, foreign asset reporting, the $100,000 cost amount threshold, the $250,000 simplified-versus-detailed reporting boundary, or how to classify foreign accounts, foreign securities, foreign real estate, foreign trusts, and other foreign property for a Canadian resident taxpayer. Trigger on phrases like "T1135", "foreign income verification statement", "specified foreign property", "foreign assets over 100000", "do I need to file T1135", "foreign bank account reporting Canada", "US brokerage T1135", "foreign rental property T1135", "simplified T1135", "Part A Part B T1135", or any question about whether a Canadian resident individual, corporation, trust, or partnership must disclose foreign property. ALWAYS read this skill before touching any Canada T1135-related work.

canada-financial-statements.mdCA

Use this skill when preparing, reviewing, or advising on annual financial statements for a Canadian company. Trigger on phrases like "ASPE", "IFRS Canada", "Canadian GAAP", "CPA Canada Handbook", "financial statements Canada", "compilation engagement", "review engagement Canada", "audit Canada", "CBCA", "OBCA", "annual return Canada", "CSRE 2400", or any question about preparing and reporting statutory accounts under Canadian corporate law. Covers ASPE/IFRS frameworks, assurance level options, required statements, formats, notes, filing requirements, and audit/review thresholds.

canada-formation.mdCA

Use this skill whenever asked about forming, incorporating, or registering a company in Canada. Trigger on phrases like "set up a company in Canada", "Canadian incorporation", "Corporations Canada", "federal incorporation", "provincial incorporation", "CBCA", "Ontario corporation", "BC incorporation", "Inc. Canada", "Canadian company formation", "register a business Canada", or any question about starting a business entity in Canada. Covers federal vs provincial incorporation, entity types, registration process, costs, post-formation compliance, and bank account opening. ALWAYS read this skill before advising on Canadian company formation.

ca-fed-instalments.mdCA

Use this skill whenever asked about Canadian federal quarterly instalment requirements for self-employed individuals. Trigger on phrases like "CRA instalments", "quarterly tax Canada", "instalment reminder", "INNS1", "INNS2", "net tax owing", "$3,000 threshold", "instalment interest", or any question about quarterly income tax prepayments for Canadian individuals. Covers the $3,000 net-tax-owing threshold, three calculation methods (no-calculation, prior-year, current-year), instalment due dates (Mar 15, Jun 15, Sep 15, Dec 15), instalment interest and penalties, and interaction with provincial instalments. ALWAYS read this skill before touching any Canada estimated tax work.

ca-fed-cpp-ei.mdCA

Use this skill whenever asked about Canada Pension Plan (CPP) or Employment Insurance (EI) contributions for self-employed individuals. Trigger on phrases like "CPP self-employed", "Schedule 8", "CPP2", "YAMPE", "EI opt-in self-employed", "how much CPP do I pay", "self-employed EI benefits", "CPP contribution calculation", or any question about CPP/EI obligations for a self-employed sole proprietor or single-member entity in Canada. This skill covers CPP1 rates, CPP2 second ceiling, Schedule 8 computation, EI voluntary opt-in, tax treatment (line 22200 deduction and non-refundable credit), age exemptions, overpayment recovery, and edge cases. ALWAYS read this skill before touching any CPP/EI-related work.

Prepare a Canada review pack with open skills

These skills can help your AI agent draft computations, organize schedules, and prepare a review package. They do not replace a tax preparer or determine your final filing position. The OpenAccountants repo has open skills, accountant-reviewed where available — run them with your AI agent, then have an accountant review.