Insight
Nov 12, 2025
Mackisen
Post-Assessment Review — Montreal CPA Firm Near You: Fix Issues After Your NOA
A Post-Assessment Review is a targeted financial and tax investigation conducted after the Canada Revenue Agency (CRA) or Revenu Québec issues a Notice of Assessment (NOA). It is your second line of defense—the stage where professional CPA intervention can correct, challenge, or optimize the government’s findings before they become legally binding or escalate to collections.
A Post-Assessment Review — Montreal CPA Firm Near You ensures your assessment reflects true income, accurate deductions, and valid supporting documents. It also gives you the power to respond to tax discrepancies with professional clarity and authority, avoiding penalties, audits, or long-term interest charges.
Legal Foundation
Law: Income Tax Act s.152(3.1) — permits CRA to reassess based on new information or errors found after the original assessment. Jurisprudence: Hickman Motors Ltd. v. Canada (1997 SCC) — a notice of assessment carries a presumption of correctness unless successfully challenged with evidence.
Why You Need a Post-Assessment Review
Once you receive a Notice of Assessment, the clock starts ticking. CRA and Revenu Québec provide only 90 days to file an objection or supply evidence. A professional Post-Assessment Review identifies the precise cause of discrepancy—whether it’s a missing slip, an input error, or an unclaimed credit—and organizes the evidence into an objection-ready file.
CRA’s automated audit systems frequently misinterpret timing differences or data mismatches. Revenu Québec often challenges GST, QST, or payroll filings where employer summaries and RL slips differ from T4 records. Having a CPA-led Post-Assessment Review ensures you respond strategically and within legal deadlines.
Learning insight: A fast, fact-based response is the difference between a $500 correction and a $5,000 reassessment. Ignoring a Notice of Assessment can lead directly to garnishments, liens, and frozen refunds.
What Mackisen CPA’s Post-Assessment Review Includes
Examination of your original return, NOA, and underlying audit notes.
Identification of unverified claims or missing documentation.
Reconciliation of income, credits, and deductions across CRA and ARQ systems.
Preparation of formal objection letters and supporting evidence.
Legal referencing to sections of the Income Tax Act or Tax Administration Act supporting your position.
Learning insight: The CRA’s “presumption of correctness” only applies when a taxpayer fails to provide proof. Mackisen CPA provides the evidence that removes that presumption and restores fairness to your file.
Common Triggers for Post-Assessment Reviews
Unreported income slips (T4A, T5, or RL-3)
Medical and tuition credits denied for missing proof
GST/QST returns with unmatched ITCs or ITRs
Home-office or auto expenses challenged by CRA
Rental losses or CCA disallowed due to documentation gaps
Payroll remittance variances
Each of these issues can be resolved through professional documentation and submission under the proper legislative section. Our CPAs ensure your case is backed by audit-level proof.
How Mackisen CPA Manages the Review
Immediate file review within 24 hours of receiving the Notice of Assessment.
Preparation of a detailed variance summary showing each adjustment made by CRA or ARQ.
Communication with tax officers for clarification and evidence submission.
Filing of a Notice of Objection if required (Form T400A / MR-93.1.1-V).
Monitoring reassessment progress and confirming corrected results.
Learning insight: CRA and Revenu Québec reassess approximately 300,000 taxpayers annually. Most errors are avoidable. Professional representation shortens resolution time by 60–80%.
Benefits of a Post-Assessment Review
Reversal of wrongful reassessments or denied deductions.
Reduced penalties and interest through evidence-based appeal.
Recovery of refunds held under review.
Restoration of CRA/ARQ compliance rating.
Peace of mind through documented closure.
Learning insight: A CRA or ARQ reassessment is not a final verdict—it’s an invitation to prove your truth. Mackisen CPA transforms that opportunity into financial recovery.
SEO Optimization and Learning Focus
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Secondary Keywords: Notice of Assessment Review, CRA appeal process, corporate tax adjustment, personal tax reassessment, accounting firm Montreal, CPA representation, tax audit Montreal.
Learning insight: Mackisen CPA combines audit experience, legal interpretation, and documentation precision to create a defense stronger than automated CRA systems. Our mission is not just compliance—it’s education and empowerment.
Real Client Outcomes
A self-employed consultant recovered $8,700 after CRA denied business-use-of-home deductions.
A logistics company reversed a $25,000 GST/QST reassessment following a Mackisen CPA submission of supplier confirmations.
A senior received a $1,400 refund after we corrected OAS clawback miscalculations.
Learning insight: When handled by a CPA, a Post-Assessment Review turns confusion into clarity, and tax problems into learning moments.
Why Mackisen CPA Montreal
Our bilingual audit and tax-law team is based in Montreal, minutes from both CRA and ARQ offices. With over 35 years of combined experience in audit, tax resolution, and financial compliance, we provide fast, effective, and legally sound representation.
Learning insight: A Post-Assessment Review is your moment of control. With Mackisen CPA, you turn a government review into a strategic opportunity for refund recovery and permanent audit protection.
Learning conclusion: The difference between an assessment and a successful appeal is preparation. A Mackisen CPA Post-Assessment Review transforms a stressful government notice into a secure financial outcome built on facts, law, and professional integrity.
