If you have ever sat down to prepare a tax return and realized your mileage log is a mess of sticky notes and half-remembered trips, you are not alone. Many Canadian business owners, contractors, and employees have lost thousands in deductions simply because they could not back up their claims. The CRA expects clear, contemporaneous records for vehicle expenses, and the rules around mileage tracking taxes Canada CRA are specific. Without proper tracking, you risk an audit and missed deductions.

This guide walks through the CRA mileage rules, what counts as eligible travel, how to calculate your deduction, and how to streamline the process with digital tools. Whether you are a CPA firm helping clients or a small business owner using a vehicle, the same principles apply.

Table of Contents

What the CRA Requires for Mileage Records

The Canada Revenue Agency does not accept estimates or vague recollections. For any vehicle expense claim, you must maintain a detailed logbook that records each business trip. The log must include the date, destination, purpose, and odometer readings for the start and end of each trip. You also need to track total kilometers driven during the year to calculate the business-use percentage.

Many people assume that a credit card statement showing fuel purchases is enough. It is not. The CRA wants to see that the vehicle was used for business purposes and that personal use is separated. If you are audited and cannot produce a contemporaneous log, the CRA may disallow your claim entirely or apply a reduced percentage based on their own estimates.

What Counts as Contemporaneous?

Contemporaneous means the entries are made at or near the time of the trip. A log created months later from memory is not acceptable. You can use a paper logbook in your glove compartment, a spreadsheet updated weekly, or a mileage tracking app. The key is that the record is created as the trips happen, not reconstructed later.

For employees who use their personal vehicle for work, the rules are similar but with one additional requirement: you must have a signed T2200, Declaration of Conditions of Employment, from your employer. This form confirms that you are required to pay your own vehicle expenses. Without it, you cannot claim employment expenses including mileage.

CRA Mileage Rates for 2026

The CRA sets a per-kilometer rate each year that represents the tax-free allowance an employer can pay an employee without the employee having to include it in income. For self-employed individuals, the same rate is often used as a benchmark for the deductible amount per kilometer. As of this writing, the rate is adjusted annually based on inflation and fuel costs. Always check the latest rate on the CRA website before filing. In 2025, the rate was 70 cents per kilometer for the first 5,000 business kilometers and 64 cents thereafter. Expect a similar structure for 2026.

Eligible vs. Ineligible Vehicle Trips

Not all kilometers behind the wheel qualify for a deduction. The CRA distinguishes between three types of travel: business, commuting, and personal. Only business travel is deductible.

  • Business travel: Trips where you drive from your place of business to a client site, between job sites, or to pick up supplies for a project. For employees, this excludes any travel to the employer's establishment.
  • Commuting: Travel from your home to your regular place of employment and back. This is always personal, even if you work from home occasionally. However, if you have a home office that qualifies as your principal place of business, then travel from home to other work locations may be considered business.
  • Personal travel: Grocery runs, vacations, school pickups, etc. These are never deductible.

One common gray area is when you stop for lunch or run a personal errand during a business trip. The CRA considers the entire trip as business if the primary purpose is business and the deviation is minor. But if you take a significant detour, only the direct business portion is deductible. For example, if you drive 50 km to a client, then 10 km to a restaurant, then 20 km to another client, and then 30 km back home, you can claim the 50+20=70 km as business, but the 10 km to the restaurant is personal.

Using a Vehicle for Both Business and Personal Use

If you use the same vehicle for both, you must allocate expenses based on the business-use percentage. That percentage is calculated as total business kilometers divided by total kilometers driven in the year. Then you apply that percentage to all vehicle expenses: fuel, maintenance, insurance, lease payments, depreciation, etc.

For example, if you drove 20,000 total kilometers and 12,000 were business, your business-use percentage is 60%. You can deduct 60% of your fuel, 60% of your insurance, and so on. If you lease the vehicle, you can also deduct a portion of the lease costs, subject to CRA limits on capital cost allowance (CCA) for vehicles.

How to Calculate Your Mileage Deduction

There are two methods to calculate vehicle expenses: the simplified method (using the per-kilometer rate) and the detailed method (tracking actual expenses). The method you choose depends on whether you are an employee receiving an allowance or a self-employed individual.

Simplified Method

Employees who receive a reasonable per-kilometer allowance from their employer do not need to track actual expenses. The allowance itself is not taxable, but if it exceeds the CRA rate, the excess is included in income. Self-employed individuals generally do not use the simplified method for deducting expenses; they must track actual costs.

Detailed Method

This is the standard method for self-employed individuals and for employees who pay their own expenses. You add up all vehicle costs for the year and multiply by your business-use percentage. Here is an example of the calculation:

Expense category Total cost Business portion (60%)
Fuel $3,000 $1,800
Oil changes $200 $120
Insurance $1,500 $900
Lease payments $4,800 $2,880
Repairs $600 $360
CCA (depreciation) $2,000 $1,200
Total $12,100 $7,260

You would deduct $7,260 on your tax return. The CCA amount is subject to class rules and may be limited depending on the vehicle's cost.

Key Deduction Limits for 2026

For passenger vehicles purchased after 2023, the maximum cost for CCA purposes is $36,000 plus GST/HST (as of 2025; check for 2026). Lease payments are limited to $900 per month (pre-tax). Interest on financing is limited to $300 per month. These limits are indexed to inflation but do not change often.

Real-World Scenario: Ontario Contractor with 12 Employees

Let us look at a practical example. Mark runs a renovation company in Ontario with 12 employees. Each employee uses their personal truck to drive to job sites. The employees are paid a per-kilometer allowance of 60 cents per kilometer, and they keep their own mileage logs.

At year-end, Mark needs to issue T4 slips and report the allowances. He also needs to ensure the allowances are reasonable. If they are, he does not need to withhold tax on them. However, if the allowance exceeds the CRA rate (say 70 cents), the excess is taxable income for the employee.

Mark's employees submitted their logs, and one employee, Sarah, drove 15,000 business kilometers. Mark paid her $9,000 in allowances (15,000 x $0.60). Since 60 cents is below the CRA rate, the entire amount is tax-free to Sarah. Mark deducts the $9,000 as a business expense.

But what if Mark had paid 75 cents? Then the first 70 cents per kilometer is non-taxable, and the extra 5 cents per kilometer ($750) would be included in Sarah's income as employment income.

Mark also uses a company vehicle for his own site visits. He drives 25,000 total kilometers in the year, of which 20,000 are business. His actual vehicle costs total $14,500. His business-use percentage is 80%, so his deduction is $11,600. Mark uses a digital mileage tracking app that syncs with his accounting software, so he does not have to calculate manually.

Common Mileage Tracking Mistakes

Even experienced tax filers make errors. Here are the most frequent ones:

  1. Mixing up commuting and business: Driving to a client's office from home is business only if you have a home office that is your principal place of business. Otherwise, the first trip of the day is commuting.
  2. Not tracking total kilometers: You need total kilometers for the percentage calculation. If you only log business trips, you cannot determine the business-use percentage.
  3. Using only fuel receipts: These show total kilometers but do not prove the trips were business related.
  4. Claiming unreasonable amounts: The CRA may question high business-use percentages (e.g., 95%) if you also have a personal vehicle. Be prepared to justify.
  5. Ignoring the standby charge for company vehicles: If an employee uses a company vehicle, there may be a taxable benefit. This is a separate calculation.

Manual vs. Automated Tracking: A Comparison

Aspect Manual (paper logbook) Automated (app like Awditify)
Effort Requires daily entries Automatic GPS tracking or quick start/stop
Accuracy Prone to errors or forgetting High accuracy with GPS
Audit trail Must keep paper for 6 years Digital records with timestamps
Cost Free (time) Subscription fee
Integration Manually enter into tax software Syncs with accounting software

Many CPA firms recommend at least a spreadsheet or app. A dedicated platform like Awditify offers automated mileage tracking that logs trips via your phone's GPS and categorizes them as business or personal. The data feeds directly into your expense reports and tax preparation. This saves hours of manual data entry and reduces the risk of errors.

Frequently Asked Questions

What is the CRA mileage rate for 2026?

The CRA announces the per-kilometer rate each year, typically in December for the following year. For 2025, the rate was 70 cents for the first 5,000 km and 64 cents thereafter. It is expected to increase slightly for 2026 to reflect fuel costs. Always verify on the CRA website before filing. The rate is used to determine the tax-free allowance employers can pay and as a benchmark for self-employed individuals.

Can I claim mileage for commuting to work?

No, commuting from your home to your regular place of work is considered personal travel and is not deductible. However, if you operate a home-based business and your home is your principal place of business, then travel from your home to a client site or other work location is business travel. For employees, there is an exception if your employer requires you to go to a temporary work location, but that is rare.

What records must I keep for mileage tracking?

You must keep a detailed log showing the date, destination, purpose, and odometer readings for each business trip. Also keep a record of total kilometers driven at the end of the year to calculate the business-use percentage. For employees, you also need a signed T2200 form. Keep these records for six years in case of a CRA audit.

Which software is best for automated mileage tracking in Canada?

Awditify offers a comprehensive mileage tracking feature that automatically records trips using your smartphone's GPS. It classifies trips as business or personal and integrates with your accounting and tax software. This eliminates the need for manual logbooks and reduces the chance of errors. You can also use it for receipt OCR and expense management, making it a complete solution for Canadian small businesses and accounting firms.

How do I calculate the business-use percentage for my vehicle?

Divide your total business kilometers for the year by your total kilometers driven. Multiply by 100 to get the percentage. Apply that percentage to all your vehicle expenses (fuel, maintenance, insurance, lease payments, interest, and CCA) to find your deductible amount. Keep your odometer readings for January 1 and December 31 to get total kilometers.

What to Do Next

Mileage tracking for tax purposes does not have to be a headache. The CRA rules are clear, and the key is consistent, accurate recordkeeping. Whether you choose a paper logbook or a digital tool, the most important step is to start today and enter trips as they happen.

If you want to reduce manual work and avoid audit risk, consider using a dedicated Canadian platform like Awditify. Our mileage tracking feature automates the logbook, calculates your business-use percentage, and syncs with your tax preparation. You can also try our free demo to see how it fits your workflow. For those looking for a complete accounting solution, explore our features for small business owners and accounting firms.

Once your mileage tracking is under control, the next natural step is to review your overall tax preparation strategy. Our guide to choosing practice management software can help firms streamline client mileage data collection.

Remember: you are not just tracking kilometers. You are capturing deductions you earned. Make the process easy and accurate.