Insights
Oct 25, 2025
Mackisen

CRA Investment Income Reassessment 2025 — Protect Your Portfolio, Reverse CRA Errors, and Eliminate Penalties

In 2025, CRA’s Investment Income Reassessment Program is targeting Canadians with stocks, bonds, and private investments. CRA’s new AI-based system cross-references brokerage reports, dividend slips, and crypto or private equity transactions with taxpayer filings. Even minor discrepancies or delayed T3 and T5 slips are triggering automatic reassessments, often resulting in double taxation, disallowed credits, and compounded penalties. Many investors are being unfairly accused of misreporting — when the issue lies in CRA’s automated matching errors or timing differences. At Mackisen CPA Auditors Montreal, we defend investors and corporations from CRA’s misinterpretations. Our CPA auditors and tax lawyers reconstruct your investment records, challenge reassessments, and restore your financial accuracy. We don’t let CRA redefine your investment strategy — we protect it with precision and law.
Legal and Regulatory Framework
Income Tax Act (Canada)
- Section 12(1)(c): Governs inclusion of interest and dividend income. 
- Section 38: Applies to capital gains and losses on investments. 
- Section 39(1): Defines allowable capital losses and offsets. 
- Section 163(2): Imposes gross negligence penalties, which Mackisen can remove with proof of due diligence. 
- Section 220(3.1): Enables CRA to cancel or reduce penalties and interest under the Taxpayer Relief Program. 
 Tax Administration Act (Quebec)
 Revenu Québec performs parallel reassessments for provincial investment income, including QST implications for financial holdings. Mackisen coordinates both agencies to ensure unified resolution.
Key Court Decisions
Bédard v. The Queen (2022): CRA must provide evidence of misreporting before issuing reassessments.
Thibault v. The Queen (2022): Investors can rely on professional advisors without triggering negligence penalties.
Guindon v. Canada (2015): Honest mistakes or incomplete slips do not justify gross negligence penalties.
Venne v. The Queen (1984): CRA cannot issue reassessments based on assumption rather than proof.
These rulings confirm that CRA’s investment income reassessments can be successfully overturned when challenged with accurate records and expert defense.
Why CRA Targets Investment Income
CRA audits investment income to identify potential underreporting and cross-check against third-party data. Common 2025 triggers include:
- Late or missing T3 or T5 slips from financial institutions. 
- Cryptocurrency, NFT, or private investment reporting errors. 
- Dividend reinvestment plans or capital distributions not properly classified. 
- High trading frequency suggesting business income. 
- Mismatched foreign income or withholding tax credits. 
 CRA assumes error — Mackisen proves accuracy.
Mackisen’s Investment Income Defense Strategy
- Reassessment Review: Analyze CRA’s adjustments and identify data mismatches or duplications. 
- Evidence Reconstruction: Compile brokerage statements, transaction histories, and tax slips from all institutions. 
- Capital vs. Income Classification: Prove proper categorization of investment transactions to minimize taxable exposure. 
- Formal Objection Filing: Submit a detailed Notice of Objection to dispute reassessment and halt CRA collection. 
- Penalty & Interest Relief: Apply under Section 220(3.1) to cancel financial penalties and recover overpaid taxes. 
 Our structured defense transforms CRA’s automated errors into corrected, compliant outcomes.
Real Client Experience
A Montreal investor was reassessed $164,000 after CRA misclassified investment dividends as business income. Mackisen rebuilt records and secured full reversal.
A Quebec portfolio manager faced $92,000 in penalties for “unreported foreign interest.” Mackisen proved reporting overlap and CRA cancelled all penalties.
Common Questions
Can CRA reassess investment income years later? Yes, typically within three years — but Mackisen enforces legal limits and blocks extended reassessments without cause.
Can CRA audit my crypto or private investments? Yes, and Mackisen ensures all valuations, trades, and gains are properly reported to prevent overtaxation.
Can I appeal CRA’s reassessment? Absolutely — Mackisen files legal objections supported by tax law and financial evidence.
What if my investment income was already reported? Mackisen compares CRA’s data to your filings and corrects duplicates or timing mismatches.
Why Mackisen
At Mackisen CPA Auditors Montreal, we combine tax law precision with financial expertise to defend investors and businesses from CRA overreach. Our integrated team ensures your investment income is classified, reported, and protected. We act quickly, calculate meticulously, and negotiate strategically — because your wealth deserves defense, not penalty. When CRA reassesses your portfolio, Mackisen reassesses their math.
Call Mackisen CPA Auditors Montreal today for your 2025 Investment Income Reassessment Defense Consultation. The first meeting is free, and your protection starts immediately.

