CRA audit types, notice of objection deadlines, Tax Court appeal procedures, voluntary disclosure, and criminal tax enforcement for Ontario tax practitioners.
Tax disputes in Canada follow a structured administrative and judicial process governed principally by the Income Tax Act, the Excise Tax Act (GST/HST), and the Tax Court of Canada Act. Ontario tax lawyers advise on everything from CRA audit response through Tax Court litigation and Federal Court of Appeal proceedings. Understanding the procedural framework and critical deadlines is essential — missed deadlines in tax disputes are often fatal and not recoverable.
| Audit Type | Common Triggers | Scope | Duration |
|---|---|---|---|
| Desk Audit (Correspondence) | Specific line items on return; random selection; information matching discrepancies | Narrow — specific items only; conducted by mail | 2-4 months |
| Field Audit | Business audit; unreported income risk; complex transactions; referral from another audit | CRA auditor visits taxpayer's premises; reviews books, records, bank statements | 6-18 months |
| GST/HST Audit | Large refund claims; certain industries (construction, real estate); random | Input tax credits, taxable supplies, HST collected and remitted | 3-12 months |
| Payroll Audit | Worker classification (employee vs contractor); benefit reporting; failure to remit | Employment records, T4 filings, worker agreements, source deductions | 3-6 months |
| Transfer Pricing Review | Multinational groups; intercompany transactions; country-by-country reporting | All related-party transactions; economic analysis of arm's length pricing | 2-4+ years |
| Scientific Research & Experimental Development (SRED) Review | Large SRED claims; first-time filers; high-risk industries | Eligibility of activities and expenditures claimed as SRED | 6-18 months |
CRA examines the return and issues proposed adjustments. Taxpayer should provide complete documentation, respond to information requests promptly, and preserve solicitor-client privilege over legal advice.
CRA issues a Notice of Reassessment setting out the additional tax, interest, and penalties. This triggers the objection deadline. Review carefully — interest begins accruing immediately.
File a Notice of Objection with the CRA Appeals Division (not the audit division). Must set out the facts and reasons for the objection. Suspends collection of the disputed amounts during the objection process.
An independent CRA Appeals Officer reviews the file and may settle the dispute. The Appeals Officer has broader authority to settle than the auditor. Most disputes resolve at this stage.
CRA Appeals issues a Notice of Confirmation (upholding the reassessment) or a varied assessment. This triggers the right to appeal to the Tax Court of Canada.
Formal judicial proceeding. General procedure: discoveries, expert evidence, oral hearings. Informal procedure: less formal, small amounts. Federal Court of Appeal is next level for questions of law.
The VDP is a significant tool for taxpayers who have not complied with their tax obligations. Timing is critical — VDP is unavailable once CRA has initiated contact about the specific non-compliance.
CRA audit timelines vary significantly by type. A desk audit (correspondence audit) typically resolves in 2-4 months. A field audit of a small business may take 6-12 months. Complex transfer pricing or large corporation audits can take 2-4 years. CRA has no statutory deadline for completing an audit, but must issue a Notice of Assessment or Reassessment within the normal reassessment period: 3 years from the original assessment for most taxpayers, 4 years for certain corporations.
The deadline to file a Notice of Objection with CRA depends on the type of assessment: for income tax, 90 days from the date on the Notice of Assessment or Reassessment, or 1 year from the filing due date for the return, whichever is later. For GST/HST, 90 days from the date on the Notice of Assessment. Late objections may be accepted if filed within 1 year of the 90-day deadline with an application for extension showing a reasonable excuse for the delay.
The CRA Voluntary Disclosures Program (VDP) allows taxpayers to correct inaccurate or incomplete information, or disclose information not previously reported, with reduced penalties. The disclosure must be voluntary (not related to an ongoing audit or investigation), complete, and involve a penalty. Under the current VDP (effective March 2018), there are two tracks: General Program (penalty relief but not interest relief for most cases) and Limited Program (for deliberate non-compliance — no penalty relief, partial interest relief only). Criminal prosecution immunity is not guaranteed under VDP.
Informal procedure applies where the amount of federal tax and penalties in dispute is $25,000 or less per year, or the amount of loss in dispute does not exceed $50,000. The informal procedure is faster, less formal, and does not require a lawyer. General procedure applies to all other disputes and resembles regular civil litigation — examinations for discovery, expert witnesses, formal rules of evidence, and legal representation is standard. Tax Court decisions under informal procedure are not binding precedent; general procedure decisions are.
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