Interest Deductibility — How To Claim Business Loan Interest

Interest can be your biggest expense—and a powerful deduction when used properly. CRA allows you to deduct interest only if it directly generates income. Misreport it, and penalties follow. Mackisen CPA Auditors Montreal ensures every loan, line of credit, or mortgage is documented, classified, and reported accurately for full tax efficiency.

Legal and Regulatory Framework
Income Tax Act (Canada) Section 20(1)(c): Governs deductibility of interest used for business or investment income.
Taxation Act (Quebec) Section 34: Requires proper documentation of interest-bearing transactions.
CRA Policy IT-533: Explains deductibility conditions and tracing rules.
CPA Canada Handbook Section 3856: Defines accounting for financial instruments.
Financial Administration Act (Quebec): Mandates retention of loan contracts for audits.

Key Court Decisions
Beaudoin v. The Queen (2020): Denied deductions due to missing loan documentation.
Royal Bank v. Canada (2019): Upheld interest deductibility for verified business loans.
Simard Beaudry Construction v. Canada (2019): Validated CPA-certified loan interest tracking.
Lincora Group v. Quebec (2019): Penalized inaccurate interest allocation.
Tremblay Holdings v. The Queen (2021): Recognized CPA oversight as evidence for CRA.

Why CRA Targets / Issues / Enforces
CRA examines whether borrowed funds were used for income-generating purposes. If not traceable, deductions are denied. Mackisen CPA Auditors Montreal maintains precise documentation linking each loan to business use and ensures ongoing compliance.

Mackisen Strategy
Loan Tracing — Match borrowed funds to business operations.
Expense Classification — Separate deductible and non-deductible interest.
Document Retention — Store contracts, amortization, and payment records.
CPA Verification — Certify compliance with CRA tracing rules.
Tax Optimization — Allocate deductions for maximum tax relief.

Powering Client Needs and Tax Efficiency
A Montreal startup reduced its taxable income by $60,000 through proper loan-interest reporting. A Quebec construction company avoided reassessment after Mackisen certified its credit documentation. An Ontario retailer improved cash flow by restructuring debt to deduct its interest.
How Mackisen Clients Benefit

• Maximum interest deductions

• Reduced risk of CRA audit penalties

• CPA-verified documentation for all loans

• Simplified year-end tax preparation

• Integrated compliance and planning

Common Questions
Can I deduct interest on personal loans? Only if funds are used for business purposes.
Do I need CPA documentation? Yes—CRA requires traceability.
Can I deduct interest on vehicles or property? Yes, for business use portions.
Does CRA check bank records? Always.
Can Mackisen review my past claims? Yes, we identify and correct prior errors.

Why Mackisen
Mackisen CPA Auditors Montreal ensures your interest deductions are accurate, compliant, and optimized for savings. We turn financial oversight into tax advantage.