Insights

Dec 9, 2025

Mackisen

MONTREAL CPA FIRM NEAR YOU: HOW TO HANDLE A CRA REQUEST FOR PROOF OF BUSINESS EXPENSES

Understanding CRA Business Expense Reviews

CRA frequently requests proof of business expenses when reported amounts appear high, inconsistent, or outside industry norms. Montreal CPAs guide clients through these reviews by identifying why CRA is questioning the expenses and preparing complete, audit-proof documentation to protect allowable deductions.

Why CRA Reviews Business Expenses

Business returns may be selected for review when:

  • Expenses exceed typical ranges for comparable businesses

  • Income-to-expense ratios appear unbalanced

  • Prior-year reviews revealed issues

  • Electronic systems flag anomalies

  • Large deductions are claimed without matching revenue
    Montreal CPAs analyze the cause of the review to determine the best response strategy.

Identifying the Expense Categories Under Review

CRA letters clearly specify which expenses require documentation. Montreal CPAs help clients identify:

  • Meals and entertainment

  • Travel and vehicle expenses

  • Advertising and promotion

  • Office expenses

  • Subcontractors

  • Professional fees

  • Home office claims

  • Capital assets and CCA
    Understanding the focus ensures accurate preparation and avoids providing unnecessary information.

Gathering Required Supporting Documents

CRA expects complete, detailed documentation. Montreal CPAs assist clients in assembling:

  • Receipts

  • Invoices

  • Contracts

  • Mileage logs

  • Bank and credit card statements

  • Digital records from accounting software
    Proper organization shows professionalism and reduces follow-up queries.

Ensuring Documentation Meets CRA Standards

Not all receipts are acceptable. Montreal CPAs review documents to ensure they include:

  • Vendor name

  • Date of purchase

  • Description of goods/services

  • Proof of payment

  • Business purpose
    This step eliminates weak or non-compliant documents before submission.

Explaining the Business Purpose of Expenses

CRA requires clear business rationale. Montreal CPAs draft explanations that:

  • Describe why the expense was necessary

  • Link expenditures to income generation

  • Align claims with Income Tax Act requirements
    A strong explanation increases the likelihood of acceptance.

Responding Professionally and Within Deadlines

CRA review requests include strict deadlines. Montreal CPAs ensure:

  • Responses are complete and timely

  • Documentation is neatly organized

  • Explanations are concise and factual
    Timely, professional submissions prevent penalties or arbitrary reassessments.

Handling Vehicle Expense Reviews

Vehicle expenses are a major audit trigger. Montreal CPAs help clients:

  • Maintain and present mileage logs

  • Separate personal vs. business use

  • Provide fuel, maintenance, and insurance receipts

  • Calculate allowable portions accurately
    Proper documentation prevents CRA from denying claims.

Reviewing Travel and Meals Claims

CRA scrutinizes these categories heavily. Montreal CPAs verify:

  • Travel purpose and destination

  • Airfare, lodging, and transportation receipts

  • Client meeting details for meal claims

  • Reasonableness compared to business activity
    Well-supported claims withstand review.

Addressing Subcontractor and Professional Fee Reviews

CRA may question subcontractor costs or professional fees when:

  • Payments lack invoices

  • Contractors are related parties

  • Payments appear unusually high
    Montreal CPAs assist in providing contracts, T4A slips, invoices, and payment proofs to validate legitimacy.

Managing Home Office Expense Verification

Home office claims must meet strict eligibility rules. Montreal CPAs ensure:

  • Clients meet “principal place of business” or “regular & ongoing use” criteria

  • Square footage calculations are correct

  • Expenses are prorated properly

  • Supporting documents are complete
    Accurate calculations prevent disallowance.

What Happens if CRA Rejects Your Expenses

If CRA disallows claimed expenses, they issue a Notice of Reassessment. Montreal CPAs:

  • Review reasons for denial

  • Identify missing or weak documentation

  • Prepare responses or additional evidence

  • File a Notice of Objection where appropriate
    Corrective steps help restore valid deductions.

Filing a Formal Notice of Objection

When CRA’s position is incorrect, Montreal CPAs prepare objections supported by:

  • Detailed schedules

  • Legal references

  • Financial calculations

  • Clear, structured arguments
    A strong objection greatly increases the chance of reversing CRA’s decision.

Avoiding Future CRA Business Expense Reviews

Montreal CPAs implement preventive measures, including:

  • Real-time recordkeeping

  • Proper categorization in bookkeeping software

  • Clear separation of personal and business expenses

  • Maintaining detailed logs for travel and vehicle use
    Proactive management reduces audit risk.

Using Digital Tools to Organize Expense Documentation

Modern tools simplify compliance. Montreal CPAs help clients adopt:

  • Cloud accounting platforms

  • Receipt scanning apps

  • Automated bank feeds

  • Digital audit trails
    Better organization ensures data is always review-ready.

Maintaining Compliance Throughout the Review

Even during a review, taxpayers must continue filing corporate, GST/QST, payroll, and instalment obligations. Montreal CPAs ensure clients remain compliant, protecting credibility during the CRA review.

Why Choose Mackisen

With more than 35 years of combined CPA experience, Mackisen CPA Montreal helps businesses stay compliant while recovering the taxes they’re entitled to. Whether you’re filing your first GST/QST return or optimizing multi-year refunds, our expert team ensures precision, transparency, and protection from audit risk.

All-in-One Accounting, Tax, Audit, Legal & Financing Solutions for Your Business

Are you ready to feel the difference?

Have questions or need expert accounting assistance? We're here to help.

Let’s Stay In Touch

Follow us on LinkedIn for updates, tips, and insights into the world of accounting.

Mackisen Consultation Inc.
5396 Avenue du Parc, Montreal, Quebec H2V 4G7
Telephone: 514-276-0808
Fax: 514-276-2846
Email: info@mackisen.com

Terms & conditionsPrivacy PolicyService PolicyCookie Policy

© 1990–2025 Mackisen Consultation Inc. All rights reserved.

Please review our Terms of Use and Privacy Policy for full legal information.

Mackisen refers to Mackisen Global Limited (“MGL”) and its global network of member firms and associated entities collectively constituting the “Mackisen organization.” MGL, alternatively known as “Mackisen Global,” operates as distinct and independent legal entities in conjunction with its member firms and related entities. These entities function autonomously, lacking the legal authority to obligate or bind each other in transactions with third parties. Each MGL member firm and its associated entity assumes exclusive legal accountability for its actions and oversights, explicitly disclaiming any responsibility or liability for other entities within the Mackisen Organization. It is of legal significance to underscore that MGL itself refrains from rendering services to clients.