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Vehicle Expenses for Self-Employed Canadians (T2125)

If you use your personal vehicle for business, a portion of every tank of gas, every oil change, and every insurance payment is deductible. Here is exactly how CRA wants you to calculate it and where it goes on T2125.

Quick Answer

Keep a logbook of all business trips during the year. Divide business kilometres by total kilometres driven to get your business-use percentage. Apply that percentage to all eligible vehicle expenses (fuel, insurance, repairs, parking). Enter amounts on T2125 lines 9281–9284. Depreciation is claimed separately as CCA (Class 10 or 10.1).

The logbook requirement — non-negotiable

CRA requires a logbook to support vehicle expense claims. Without one, your entire vehicle deduction is at risk on audit. Your logbook must record, for every business trip:

You also need your odometer reading at January 1 and December 31 to establish total kilometres driven for the year. A mileage app (MileIQ, TripLog, etc.) is acceptable — CRA accepts digital records as long as they are accurate and complete.

Note: commuting from your home to a regular fixed office is not a business trip. Travel from home to a client site or job site generally is — especially if your home is your principal place of business.

Calculating your business-use percentage

Example

  • Total kilometres driven: 22,000 km
  • Business kilometres (from logbook): 11,000 km
  • Business-use percentage: 11,000 ÷ 22,000 = 50%
  • Total vehicle expenses: $8,000
  • Deductible amount: $8,000 × 50% = $4,000

What expenses qualify

T2125 LineExpense
9281Fuel and oil
9282Insurance
9283Maintenance and repairs
9284Other (parking, car washes, licence and registration)
9819Lease payments (subject to deduction limits — see below)

All of the above are subject to your business-use percentage. You cannot deduct the full amount — only the business portion. Parking tickets and fines are never deductible.

Depreciation — CCA for your vehicle

The cost of purchasing your vehicle is not deducted as an immediate expense. Instead, it is depreciated over time using CCA (capital cost allowance):

CCA is also subject to your business-use percentage. If you use the vehicle 50% for business, you claim 50% of the CCA calculated. Enter CCA on the CCA schedule at the end of T2125.

Lease payment deduction limit

If you lease rather than own, the monthly deduction is capped. For 2024/2025, the monthly lease deduction limit for a passenger vehicle is $1,050 per month (before HST). If your actual lease payment exceeds this, you can only deduct $1,050 × your business-use percentage. This limit exists to prevent excessive deductions on luxury vehicles.

This article is for informational purposes only and does not constitute tax advice. CCA limits are updated periodically — always verify current amounts in CRA's T4002 guide or with a tax professional before filing.