Canada Revenue Agency
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Motor vehicle - Interest

You can deduct interest on money you borrow to buy a motor vehicle, automobile, or passenger vehicle you use to earn income. Include the interest as an expense when you calculate your allowable motor vehicle expenses.

When you use a passenger vehicle to earn income, there is a limit on the amount of interest you can deduct. To calculate the amount of interest you can deduct, complete "Chart B - Available interest expense for passenger vehicles" on page 5 of Form T2125, Statement of Business or Professional Activities.

Example
On May 1, 2011, Julie bought a car that she uses to earn business income. Julie's fiscal year ends on December 31. The car is a passenger vehicle. Julie borrowed money to buy her car, and the interest payable in 2011 was $1,500. Her available interest expense is whichever is less:

  • the total interest payable in 2011, which is $1,500; or
  • $10 × 245 days = $2,450.

Julie can claim an interest expense of $1,500.

She also recorded the following information for 2011:

Kilometres driven to earn business income 25,000
Total kilometres driven 30,000
Expenses:  
Gasoline and oil $1,330
Interest expense $1,500
Insurance $750
Licence and registration fees $70
Repairs and maintenance $100
Total car expenses $3,750

Julie calculates the expenses she can deduct for her car for 2011 as follows:

(25,000 (business kilometres) ÷ 30,000 (total kilometres)) × $3,750 = $3,125

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