Table of Contents
- Introduction
- How CRA Defines Deductible Corporate Expenses
- Common Operating Expenses Corporations Can Write Off
- Employee, Payroll, and Professional Expenses
- Home Office and Property-Related Expenses
- Vehicle and Travel Expenses
- Capital Assets and Capital Cost Allowance (CCA)
- Non-Deductible or Restricted Corporate Expenses
- CRA Audit Risks Related to Corporate Write-Offs
- How BBA Tax Ottawa Helps Corporations Stay Compliant
- Conclusion
1. Introduction
Understanding which expenses a corporation can legally write off in Canada is essential for minimizing taxes and avoiding CRA audits. While corporations are entitled to deduct reasonable business expenses, improper claims or poor documentation can quickly trigger reassessments or penalties.
At BBA Tax, a trusted Ottawa accounting firm, we help corporations claim every legitimate deduction while remaining fully compliant with CRA rules.
2. How CRA Defines Deductible Corporate Expenses
The CRA allows corporations to deduct expenses that are:
- Incurred to earn business income
- Reasonable in amount
- Supported by documentation
- Not personal in nature
If an expense does not directly relate to business operations or appears excessive, the CRA may deny the deduction.
3. Common Operating Expenses Corporations Can Write Off
Corporations can generally deduct the following operating expenses:
- Office rent and utilities
- Internet and telephone services
- Office supplies and equipment
- Software subscriptions and cloud services
- Advertising and marketing costs
- Website design and hosting
- Insurance premiums (business-related)
These expenses must be directly connected to business activities.
4. Employee, Payroll, and Professional Expenses
Corporations may deduct costs related to staffing and professional services, including:
- Employee wages and salaries
- Employer CPP contributions
- Benefits and group insurance
- Training and professional development
- Accounting and legal fees
- Consulting and advisory services
Proper payroll reporting (T4s, remittances) is critical to avoid CRA penalties.
5. Home Office and Property-Related Expenses

If a corporation operates from a home office or owns property, allowable deductions may include:
- Portion of rent or mortgage interest
- Utilities and maintenance
- Property taxes (business portion)
- Repairs related to business use
The deductible amount must be proportionate to business usage and carefully calculated.
6. Vehicle and Travel Expenses
Corporations may deduct business-related vehicle and travel costs such as:
- Fuel and maintenance
- Insurance and licensing
- Lease payments or depreciation (CCA)
- Parking fees
- Business travel, lodging, and meals
⚠️ Meals are generally only 50% deductible, and personal use must be excluded.
7. Capital Assets and Capital Cost Allowance (CCA)
Large purchases are typically not deducted in full immediately. Instead, corporations claim Capital Cost Allowance (CCA) over time.
Examples include:
- Computers and office equipment
- Machinery and tools
- Furniture
- Vehicles
CCA rates vary by asset class and must be calculated accurately.
8. Non-Deductible or Restricted Corporate Expenses
Certain expenses are not deductible or are restricted, including:
- Personal expenses
- Fines and penalties
- Club memberships for personal use
- Life insurance premiums (most cases)
- Excessive or unreasonable expenses
Improperly claiming these items is a common CRA audit trigger.
9. CRA Audit Risks Related to Corporate Write-Offs
The CRA closely reviews corporate deductions. Common audit triggers include:
- High expenses relative to revenue
- Home office and vehicle claims
- Shareholder personal expenses paid by the corporation
- Poor bookkeeping or missing receipts
- Inconsistent filings year over year
BBA Tax Ottawa provides proactive audit defense and expense review to reduce risk.
10. How BBA Tax Ottawa Helps Corporations Stay Compliant

Our services include:
- Corporate bookkeeping and expense tracking
- T2 corporate tax return preparation
- Expense eligibility reviews
- CRA audit defense and representation
- Strategic tax planning for corporations
We ensure deductions are maximized legally and supported properly.
11. Conclusion
Corporations in Canada can deduct a wide range of business expenses—but only when claimed correctly and supported with documentation. Understanding CRA rules is essential to reducing taxes without increasing audit risk.
For professional guidance, BBA Tax Ottawa helps corporations optimize deductions while remaining fully CRA-compliant.
📞 Contact BBA Tax today to review your corporate expenses and tax strategy.

