CRA T2 Audit Triggers for Canadian Corporations 2026 — The Ten Highest-Signal Flags
Reviewed by Bader A. Chowdry, CPA, CA, LPA on
Quick Answer
CRA’s T2 audit-selection system combines automated risk scoring with sector reviews and human-triggered files. The ten highest-signal triggers for a 2026 Canadian corporation are: persistent shareholder loans over $50,000, GST/HST-to-T2 revenue mismatches, aggressive SR&ED claims, disproportionate charitable donations, non-filed T1134 or T1135 forms, undocumented related-party transactions under s.247, losses claimed against unrelated income, rapid cash-basis shifts, first-year filings with meaningful refunds, and missing required schedules. Every trigger can be legitimately present in a well-run corporation — the goal is not to avoid triggers but to file a T2 that survives audit with contemporaneous documentation.
Which shareholder-loan patterns does CRA flag?
Under Income Tax Act subsection 15(2), a loan or indebtedness from a corporation to a shareholder must be repaid within one year after the corporation’s fiscal year-end. If it is not, the unpaid balance is included in the shareholder’s income at year of receipt (subject to the s.15(2.6) refund rule if repaid later).
CRA’s audit system flags:
- Persistent shareholder loans over $50,000 rolled forward year over year.
- Debit balances in the shareholder loan account that grow through the year.
- Round-trip repayments — repaid on day one of the year, re-borrowed on day two.
- Multiple loans out to related parties with no promissory notes or interest at the prescribed rate.
The Schedule 100 balance sheet exposes shareholder loans directly, and CRA cross-references to the previous three years of Schedule 100 automatically. A shareholder loan that persists, grows, or has round-trip characteristics is one of the fastest T2 audit picks in the CRA universe.
Defence: contemporaneous loan agreements at the prescribed rate; annual T5 for imputed interest; documented repayments; and a shareholder loan policy that does not rely on round-trip repayments.
How does the GST/HST-to-T2 revenue reconciliation trigger an audit?
CRA cross-references the revenue reported on your GST/HST returns (Line 101 supplies) to the revenue on Schedule 125 of the T2 (income statement). Material mismatches trigger a cross-program review under CRA’s GST/HST audits and verification guidance.
Common reconciliation issues:
- Zero-rated and exempt supplies not properly identified in the reconciliation.
- Inter-provincial or export sales with different revenue treatment.
- Deferred revenue — amounts collected but not yet earned; timing differences between GST/HST and income tax.
- Barter transactions — full fair market value recognition on both sides.
- Bad debts — reversal of GST/HST on written-off receivables.
We build a formal Schedule 125-to-GST/HST reconciliation for every corporate client — a one-page schedule that ties the two-program revenue figures with explanation for every dollar of variance. This is a document CRA will accept at audit and often ends the review.
What SR&ED patterns attract technical review?
The Scientific Research and Experimental Development tax credit under s.127 is one of Canada’s most valuable investment tax credits — and CRA reviews SR&ED claims at a much higher rate than average T2 files. See canada.ca SR&ED Program.
Patterns that attract CRA SR&ED technical review:
- First-time claims with large refundable ITCs.
- Sudden year-over-year growth in claimed expenditures.
- Contracted-out R&D with limited internal technical involvement.
- Overhead claims exceeding 60% of direct labour under the traditional method.
- Multiple projects with similar wording across the T661 project descriptions.
- Consultant-driven claims where the technical write-up appears templated.
Defence: rigorous Form T661 technical write-ups; contemporaneous project logs with dated experiments; direct labour records tied to timesheet systems; and a policy of choosing the proxy method (55% of direct labour flat) over the traditional method when the two produce similar results — the proxy method is administratively cleaner and less audit-prone.
How do T1134 and T1135 non-filings inflate risk scores?
Cross-border reporting has become one of CRA’s strict-liability priorities. The two forms that matter for most incorporated Canadian owner-managers:
T1134 — Information Return Relating to Controlled and Non-Controlled Foreign Affiliates
– Required when the Canadian corporation has any interest in a non-resident corporation or trust.
– Due 10 months after year-end.
– Non-filing penalty up to $12,000; wilful non-filing up to $24,000 per return.
T1135 — Foreign Income Verification Statement
– Required when specified foreign property has a total cost base exceeding CAD $100,000 at any point in the year.
– Due at the same time as the T2.
– Non-filing penalty $25/day up to $2,500; gross negligence $500/day up to $12,000.
CRA’s system automatically checks for T1134 / T1135 when it identifies foreign affiliates or foreign transactions on the T2. A T2 with foreign entries but no companion T1134/T1135 filings is one of the highest-signal CRA audit picks. Read more at canada.ca T1134 filing requirements and T1135 filing requirements.
What related-party transactions need transfer-pricing documentation under s.247?
Section 247 requires contemporaneous documentation for any material transaction between the Canadian corporation and a non-arm’s-length non-resident. Domestic related-party transactions are not caught by s.247 but attract scrutiny under s.69 (fair market value rules) and the general anti-avoidance rule (GAAR) under s.245.
Contemporaneous documentation under s.247(4):
– Description of property or services transferred.
– Terms and conditions.
– Identification of participants.
– Functional analysis (functions, assets, risks).
– Consideration of transfer-pricing methods and selection of the most appropriate.
– Comparability analysis with data available at the time.
The documentation must exist by the T2 filing deadline of the year to which it relates — not created later during audit. Absence of contemporaneous documentation attracts a penalty of 10% of any transfer-pricing adjustment under s.247(3).
What are the other five triggers to watch?
Rounding out the ten highest-signal T2 audit triggers:
6. Disproportionate charitable donations. Donations exceeding 20–30% of taxable income flag for tax-shelter review under s.237.1.
7. Losses claimed against unrelated income. Non-capital losses under s.111 must be from a source that could reasonably produce income. Losses used against income from a source that appears economically unconnected trigger review.
8. Rapid cash-basis shifts. Expense growth outpacing revenue growth, or year-over-year retained-earnings extractions that spike.
9. First-year meaningful refunds. First-return refundable ITCs (SR&ED, film credits, apprenticeship) or GST/HST refunds attract mandatory review.
10. Missing required schedules. A T2 missing S53 (GRIP), S89 (CDA), S9 (related corps), or S23 (SBD-sharing agreement) when it should be present raises the automated risk score. See our companion T2 pillar page for the full schedule list.
What Insight Accounting CPA does about T2 audit risk
Every T2 we file goes through a documented audit-risk checklist against these ten triggers. Where a legitimate trigger is present (persistent shareholder loans supporting the owner’s cash flow, growing SR&ED claims, foreign affiliate structures), we build the contemporaneous-documentation file at the same time we file the T2 — so the audit-defence package already exists if CRA calls. Bader A. Chowdry, CPA, CA, LPA signs off personally on every file.
Frequently asked questions
Q: How does CRA choose which T2 returns to audit?
A: CRA uses a Business Intelligence risk-scoring engine that scores every T2 return against historical audit outcomes. Sector reviews add to the risk score for corporations in flagged industries. Human-triggered audits arise from third-party tips, court decisions, or upstream audits of a related party. See canada.ca — Tax audits.
Q: What is the s.15(2) shareholder loan rule?
A: A loan or indebtedness from the corporation to a shareholder must be repaid within one year of the corporation’s fiscal year-end. If not, the unpaid balance is included in the shareholder’s income under s.15(2), with a refund available under s.15(2.6) if later repaid.
Q: What’s the penalty for not filing T1135?
A: $25 per day up to $2,500 for ordinary non-filing; up to $500 per day up to $12,000 where gross negligence applies. CRA has been active in assessing these penalties.
Q: Does CRA share information with Revenu Québec?
A: Yes. Federal-provincial information sharing is standard, and a Quebec CO-17 review often triggers a federal T2 review of the same corporation, and vice versa.
Q: How long should I keep records for T2 audit defence?
A: Six years from the end of the tax year the records relate to, under ITA s.230. Practical guidance: keep records supporting capital cost of long-lived assets (real estate, incorporation) permanently — a UCC or ACB audit may reach back further than six years.
Important — informational only, not advice. Do not use this article to make any decision.
This article is published by Insight Accounting CPA Professional Corporation for general educational purposes only. It is not tax, legal, accounting, financial, or investment advice, and nothing in this article should be relied upon — by anyone, for any purpose — to make a business, tax, financial, accounting, legal, or investment decision.
Tax law, CRA administrative positions, court interpretations, and Ontario provincial rules change frequently, sometimes retroactively, and the content of this article may be incomplete, simplified, out of date, or wrong by the time you read it. The right answer for your specific situation depends on facts this article does not know — your structure, history, jurisdiction, filings, contracts, and goals.
Before acting, engage your own Chartered Professional Accountant or qualified advisor who has reviewed your specific circumstances in writing. Insight Accounting CPA Professional Corporation, the author, and any contributors expressly disclaim all liability — direct, indirect, or consequential — for any action taken or not taken on the basis of this content.
Insight Accounting CPA Professional Corporation is led by Bader A. Chowdry, CPA, CA, LPA — licensed by CPA Ontario under the Public Accounting Act, 2004. To engage us for situation-specific advice, book a free 30-minute discovery call.
