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
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.

