Vehicle Expense Tracking for the Self-Employed in Canada

Vehicle expenses are one of the largest deductions available to self-employed Canadians, but they are also one of the most frequently audited. The CRA has specific rules about what qualifies, how to track your driving, and how much you can claim. Get it right and you save thousands. Get it wrong and you face reassessment.

This guide covers everything you need to know about claiming motor vehicle expenses on your T2125 as a sole proprietor, freelancer, or independent contractor.

Business Use vs Personal Use

The CRA does not let you deduct 100% of your vehicle costs unless you use the vehicle 100% for business, which is rare for sole proprietors who also drive for personal reasons. Instead, you calculate a business-use percentage and apply it to your total vehicle expenses.

The formula:

Business kilometres / Total kilometres = Business-use percentage

What counts as business use:

• Driving to meet clients or customers
• Trips to suppliers or to pick up materials
• Travel between business locations
• Driving to the bank or post office for business errands
• Travel to conferences, trade shows, or business events

What does not count:

• Driving from home to your regular place of business (commuting)
• Personal errands, even if done during the workday
• Vacations, even if you do some work while travelling

The home office exception: If your home is the base of your business operations, driving from home to a client's location counts as business use, not commuting. The CRA's test turns on where the business is actually run from, not on what a form says, and having an office elsewhere normally means home is not the base. Commuting vs business driving works through the test with examples.

The CRA Logbook Requirement

The CRA requires you to keep a logbook to support your vehicle expense claim. This is not optional. Without a logbook, the CRA can deny your entire vehicle expense deduction upon audit.

What the Logbook Must Include

For each business trip, record:

• Date of the trip
• Destination (name and address)
• Purpose of the trip (client meeting, supply pickup, etc.)
• Kilometres driven for the trip

At the beginning and end of your fiscal period (January 1 and December 31 for most sole proprietors), record your odometer reading. The difference gives you total kilometres for the year. Your logbook entries give you business kilometres. The ratio is your business-use percentage.

Note the direction of that arithmetic. Total kilometres come from the odometer, never from adding up your logged business trips, and the ways an otherwise careful log still fails are covered in what a CRA-acceptable logbook actually contains.

The Base Year and Sample Year Method

The CRA allows a simplified approach after your first full year of record-keeping:

1. Base year: Keep a complete, detailed logbook for one full 12-month period.
2. Sample years: In subsequent years, keep a logbook for a three-month period. You do not claim the sample percentage, and you do not simply reuse the base-year percentage either. You compute a projected figure: (sample period % divided by the same period % in the base year) multiplied by the base-year annual %.
3. The test: that projected figure is accepted if it lands within 10 percentage points of your base year's annual business use. Not within 10 points of the sample. This is the step most guides state with the wrong reference point, and it is the step that decides whether nine months of your year has support.
4. New base year required: If the projected figure falls outside that band, the base year is no longer an appropriate indicator. The sample is then reliable only for the three months it covers, and you should establish a new base year with a full 12-month logbook.

The arithmetic is worth doing once on your own numbers. The simplified logbook and the base-year rule works it through twice, including a year that fails.

This method reduces the ongoing record-keeping burden, but you must maintain that first full-year logbook meticulously.

What Vehicle Expenses Qualify

Here is a complete list of motor vehicle costs you can deduct, subject to your business-use percentage:

Operating Expenses

Expense	Notes
Fuel (gas, diesel, electricity)	Keep fuel receipts or credit card statements
Oil and fluids	Routine top-ups and changes
Insurance	Annual premium for the vehicle
Licence and registration	Annual provincial fees
Repairs and maintenance	Mechanical repairs, tire replacement, oil changes
Car washes	If used for client-facing business
Parking	Business parking only; not parking at your home or regular office
Supplementary insurance	Roadside assistance, extended warranty on a leased vehicle
Tires	Winter and summer tires

Financing Costs (Choose One)

You have two options depending on how you acquired the vehicle:

Option A, You own the vehicle: Claim Capital Cost Allowance (CCA) on the vehicle. The purchase price goes into CCA Class 10 or 10.1, and you claim depreciation each year. You also deduct the interest on your car loan, subject to limits.

Option B, You lease the vehicle: Claim your lease payments as an expense, subject to the CRA's prescribed monthly limit. You cannot also claim CCA, since you do not own the vehicle.

You cannot claim both CCA and lease payments.

Class 10 vs Class 10.1: Which Applies to Your Vehicle?

The CRA separates vehicles into two CCA classes based on cost:

Class 10 (30% declining balance)

Your vehicle goes in Class 10 if:

• It is a motor vehicle (trucks, vans used primarily for business), OR
• It is a passenger vehicle that costs at or below the CRA's prescribed limit

For 2026, the prescribed cost limit for a passenger vehicle is $39,000 (before sales tax). It was $38,000 for 2025 and $37,000 for 2024, and the year that counts is the year you bought the car, not the year you are filing. Finance announces the next limit each December or January.

Class 10 vehicles are pooled together. All your Class 10 vehicles share one undepreciated capital cost (UCC) balance.

Class 10.1 (30% declining balance)

Your vehicle goes in Class 10.1 if:

• It is a passenger vehicle that costs more than the prescribed limit

Each Class 10.1 vehicle gets its own separate class. This has three important consequences:

1. No terminal loss. When you sell or trade in a Class 10.1 vehicle, you cannot claim the remaining UCC as a terminal loss.
2. No recapture. The CRA will not add back previously claimed CCA as income when you dispose of the vehicle.
3. Capped cost base. Your CCA is calculated on the prescribed limit, not the actual purchase price. If you bought a $55,000 vehicle in 2026, when the limit is $39,000, your CCA is based on $39,000.

Passenger Vehicle Limits

The CRA caps several vehicle-related costs for passenger vehicles. These limits apply regardless of CCA class:

Limit Type	Amount
CCA cost ceiling (Class 10.1), a car bought in 2026	$39,000 + sales tax
Monthly lease payment cap, a lease signed in 2026	$1,100 + sales tax
Deductible loan interest cap, a car bought after 2023	$350/month

Each row names its own year because each of the three is keyed to a different event, and reading the year off the wrong row is the common mistake. The cost ceiling and the interest cap belong to the year you bought the car; the lease cap belongs to the year you signed the lease. None of them belongs to the year you are filing: a car bought in 2024 keeps its $37,000 ceiling for the life of the pool, however many years you claim it. Finance announces the next year's amounts each December or January, so check the figures for the year of your own purchase or lease before filing.

The per-kilometre allowance rate is deliberately not in that table. It is not a limit on a deduction you take, it is the ceiling on an allowance an employer or a corporation may pay someone for using their own vehicle, and it moves every January. The mileage rate calculator carries the current amounts and shows what they come to beside the business-use deduction you actually claim here.

How to Calculate Your Vehicle Deduction

Here is the step-by-step calculation:

Step 1: Total Your Vehicle Expenses

Add up all operating costs: fuel, insurance, registration, repairs, maintenance, and either lease payments or CCA plus loan interest. Keep business parking aside: it is added in full after the percentage.

Step 2: Apply Your Business-Use Percentage

Multiply the total by your logbook-derived business-use percentage.

Step 3: Respect the Caps

If your vehicle is a passenger vehicle, ensure your lease payments, interest, and CCA base do not exceed the prescribed limits.

Worked Example

Maria is a freelance photographer. She drove 25,000 km total in 2025, with 15,000 km for business (60% business use). She owns her vehicle outright (original cost $30,000, Class 10).

Expense	Annual Amount
Gas	$3,600
Insurance	$1,800
Licence and registration	$200
Repairs and maintenance	$1,400
Car washes	$120
Parking (business only)	$280
CCA (30% of opening UCC $18,000)	$5,400
Total vehicle costs	$12,800

Maria's deduction: ($12,800 - $280 parking) x 60% = $7,512, plus the $280 of business parking in full = $7,792

The CCA and the operating costs go on different lines of her T2125:

• Line 9281 (motor vehicle expenses, not including CCA): $7,120 of operating costs x 60% = $4,272, plus the $280 of parking = $4,552
• Line 9936 (CCA): $5,400 x 60% = $3,240

Together the two lines come to the same $7,792.

Tips for Surviving a CRA Audit

Motor vehicle expenses are a top audit target. Protect yourself:

• Start your logbook on January 1. A logbook that starts in March looks like an afterthought.
• Be consistent. Record every business trip, not just the ones you remember at tax time.
• Keep all receipts. Fuel receipts, repair invoices, insurance statements, and registration documents.
• Be honest about personal use. Claiming 90% business use on a family sedan raises red flags. The CRA knows what realistic percentages look like for different occupations.
• Record odometer readings. Note the odometer at the start and end of every fiscal period (January 1 and December 31 with a calendar year end).
• Photograph your odometer. A timestamped photo on your phone is easy evidence.

Digital Logbook Options

The CRA accepts digital logbooks as long as they contain the required information and are contemporaneous (recorded at or near the time of the trip, not reconstructed months later).

A mobile app that uses GPS to track trips and automatically calculates distances is ideal. The key is to log the purpose of each trip and ensure the records are exportable and backed up.

FAQ

Do I really need a logbook to claim vehicle expenses? Yes. The CRA requires one and it is not optional. Without a logbook the CRA can deny your entire vehicle expense deduction on audit, which is the single most expensive mistake in this category.

What does the logbook have to contain? Odometer readings at the start and end of the fiscal period, which give you total kilometres, plus entries for each business trip recording date, destination, purpose, and distance. Business kilometres divided by total kilometres is your business-use percentage.

Is there a way to avoid keeping a full logbook every year? Yes, after the first year. Keep a complete 12-month logbook as a base year. In later years you can keep a three-month sample and project the year from it: sample period % divided by the same period % in the base year, multiplied by the base-year annual %. That projected figure is accepted if it falls within 10 percentage points of the base year's annual business use, which is the comparison that matters and the one most often stated against the sample instead.

Is driving from home to a client commuting or business use? If your home is the base of your business operations, driving from home to a client's location is business use, not commuting. If you keep an office or shop elsewhere, home normally is not the base, and ordinary home-to-work commuting is never deductible.

Sources

1. CRA Guide T4002, Self-employed Business, Professional, Commission, Farming, and Fishing Income, Chapter 9, Motor Vehicle Expenses, Detailed CRA guidance on vehicle expense deductions for the self-employed.
2. CRA Motor vehicle expenses, Overview of deductible vehicle costs and record-keeping requirements.
3. CRA Automobile and motor vehicle allowance rates, Current prescribed limits for vehicle costs, lease payments, and per-kilometre allowance rates.
4. CRA Capital Cost Allowance, Classes of depreciable property, CCA class definitions including Class 10 and Class 10.1.