Business Vehicle Expenses in Canada: What You Can Claim and How to Log It

Last updated August 2026.

The vehicle is the deduction owners are most confident about and least able to prove. Almost everyone driving for a business knows the trips are deductible. Almost nobody can show, on paper, which trips they were.

That gap is where the money goes. The claim is usually honest. The record behind it is usually a guess made in April about a year that ended in December.

We spent years in the CRA’s audit division before starting Better Books Canada, and the vehicle line had a rhythm to it. It was rarely the first thing anyone asked about, and it was very often the first thing that got reduced, because it is the one number on the return that a taxpayer can almost never rebuild after the fact.

So here is the whole thing: which vehicle you actually own in the CRA’s eyes, how the percentage is calculated, what a logbook has to contain, the shortcut that lets you stop keeping one every year, and the 2026 ceilings that cap the claim no matter how much you spent.

The short answer

You can deduct the business share of what it costs to run a vehicle you use to earn business income. The share is business kilometres divided by total kilometres for the year, so the log is the deduction. Fuel, insurance, repairs, licence and registration, loan interest and lease payments all go into the pool that gets prorated, and capital cost allowance is claimed separately. If the vehicle is a passenger vehicle, three hard ceilings apply in 2026: $39,000 before tax on the capital cost, $1,100 a month on lease payments, and $350 a month on loan interest.

Everything below is the detail behind those four moves.

Step 1: Find out which kind of vehicle you actually own

This is the step that quietly decides how much you get, and most owners have never looked at it. For income tax purposes the CRA sorts vehicles into four types, and the important split is between a motor vehicle and a passenger vehicle. Passenger vehicles are the ones carrying the ceilings on capital cost allowance, interest and leasing. Motor vehicles are not.

A passenger vehicle is one designed mainly to carry people, seating the driver and no more than eight passengers. The CRA is explicit that most cars, station wagons, vans and some pickup trucks are passenger vehicles. If you drive a sedan or an SUV, assume you are capped.

The exceptions are worth knowing because they are worth real money:

• A pickup truck or van seating one to three people counts as a motor vehicle if, in the year you bought or leased it, you used it more than 50 percent of the time to transport goods or equipment.
• An extended cab pickup, van or SUV seating four to nine counts as a motor vehicle only if it was used 90 percent or more to transport goods, equipment or passengers to earn income. That is a much harder test, and the jump from 50 percent to 90 percent catches people who upgraded to the bigger cab.
• A pickup used more than 50 percent at a remote work location or special work site at least 30 kilometres from the nearest community of 40,000 people counts as a motor vehicle regardless of seating.

Notice that every one of those tests is a percentage, and a percentage needs a log. The exception that takes your truck out of the passenger vehicle rules is itself proved by the same record we are about to describe.

Step 2: The calculation is one fraction

If a vehicle is used for both business and personal driving, you deduct only the portion that relates to earning business income. The CRA’s own arithmetic is simply business kilometres divided by total kilometres, multiplied by the total running costs.

Say you drove 32,000 kilometres last year and 19,200 of them were for the business. That is 60 percent. If fuel, insurance, repairs, licensing and loan interest came to $9,400 for the year, your deduction is $5,640.

The expenses that go into that pool are:

• licence and registration fees
• fuel and oil, and electricity for a zero emission vehicle
• insurance
• interest on money borrowed to buy the vehicle
• maintenance and repairs
• leasing costs

Two things sit outside that pool and are frequently missed. Capital cost allowance is claimed on its own line rather than inside the vehicle total. And the CRA allows you to deduct the full amount of business parking fees and of supplementary business insurance on the vehicle, with no proration at all. A downtown parking bill for a client meeting is not 60 percent deductible. It is a business expense in its own right.

If you run more than one vehicle through the business, keep a separate record for each one and calculate each vehicle’s expenses separately. They do not go into a single pot.

Step 3: Know which kilometres are actually business kilometres

This is where honest owners overclaim without meaning to. The commute is not business driving. The CRA states plainly that driving back and forth between home and work is personal use, and the same logic runs through the business rules. Driving from your house to the place you work every day is getting yourself to work, and it does not become a business trip because you own the business.

What does count is travel between your place of business and a client, a supplier, a job site or the bank. Driving to pick up materials counts. Driving to a client meeting counts. If your home genuinely is your main place of business, trips from there to a client are business travel, and that distinction is one of the more valuable side effects of a properly claimed home office.

Everything else is personal, including the trip that happens to pass a client’s building on the way somewhere else. The test is the purpose of the trip, and the purpose is one of the four things the log is supposed to record.

Step 4: Keep the logbook the CRA actually accepts

The CRA calls a full logbook maintained for the entire year the best evidence to support the use of a vehicle. It is not a spreadsheet of monthly totals, and it is not an estimate. For each business trip it records four things:

• the date
• the destination
• the purpose of the trip
• the number of kilometres driven

On top of that, record the odometer reading at the start and at the end of the fiscal period. If you change vehicles partway through the year, write down the date of the change and the odometer reading when you bought, sold or traded each one.

The odometer readings are what most people leave out, and they are the part an auditor reaches for first. The trip entries tell us what you claim you drove. The odometer tells us what the vehicle actually did. When those two numbers disagree by a wide margin, the conversation stops being about fuel receipts and starts being about the credibility of the whole schedule. Vehicles carry extra weight here, because motor vehicle registration data is one of the outside sources the CRA reaches for when a lifestyle does not match a return, and that mismatch is one of the signals that trigger a CRA audit.

A phone app that captures the four fields automatically is genuinely fine, and it is a better answer than discipline, because the entries are made at the time rather than reconstructed from a calendar in the spring. Whatever you use, it belongs with the rest of what records the CRA requires you to keep, not in a note on your phone that gets wiped with the next device.

Step 5: The three month sample that gets you out of logging every year

Most owners have never heard of this, and it is the single most useful thing in this article. You do not have to keep a full logbook every year for the rest of your working life.

Keep a full logbook for one complete year first. That becomes your base year. After that, the CRA lets you use a three month sample logbook to project business use for a whole year, as long as the usage stays in the same range as the base year and you can show the base year is still representative of how the vehicle is normally used.

The projection works like this: take the business use percentage from your sample period, divide it by the same period’s percentage in the base year, and multiply by the base year’s annual percentage.

The CRA’s own example runs the numbers. An owner keeps a full logbook showing quarterly business use of 52, 46, 39 and 67 percent and an annual figure of 49 percent. In a later year they log only April, May and June, and get 51 percent. The same three months in the base year were 46 percent. So the calculation is 51 divided by 46, multiplied by 49, which gives 54 percent. The CRA accepts 54 percent as that year’s business use.

The guardrail is the 10 point band. The projected figure has to land within 10 percentage points of the base year’s annual number, which in that example means anywhere from 39 to 59 percent. Go outside the band and the base year is no longer a fair indicator, the sample only supports the three months it actually covers, and you are back to keeping a real record for the rest of the year. At that point the sensible move is to start a fresh base year with a new full 12 month logbook.

One retention detail that trips people up. Records generally have to be kept for six years, but the base year logbook has to be kept for six years from the end of the tax year in which it was last used to establish business use. Run samples off a 2026 base year through 2031 and that 2026 logbook is live evidence the whole time. Do not throw it out on the ordinary six year schedule.

Step 6: The 2026 ceilings on a passenger vehicle

If the vehicle is a passenger vehicle, three limits cap what you can claim no matter what you paid. The Department of Finance announced the 2026 automobile deduction limits on 14 January 2026, effective from 1 January 2026:

• Capital cost: the ceiling for capital cost allowance on a Class 10.1 passenger vehicle rose from $38,000 to $39,000 before tax, for new and used vehicles acquired on or after 1 January 2026.
• Leasing: deductible lease costs stay at $1,100 a month before tax for new leases entered into on or after 1 January 2026.
• Interest: the maximum interest deduction stays at $350 a month for new automobile loans entered into on or after 1 January 2026.
• Zero emission passenger vehicles: the Class 54 capital cost ceiling stays at $61,000 before tax.

Read that first line again, because it is the one that costs money. Buy a $70,000 car for the business and your capital cost allowance is calculated on $39,000 plus the sales tax on $39,000. The other $31,000 is simply not deductible, ever. It is not deferred to a later year. It is gone. That sales tax is still recoverable as an input tax credit even if you file under the GST/HST quick method, because capital assets are one of its exceptions.

This is why the purchase decision and the tax decision belong in the same conversation. We have watched owners sign for a vehicle in December to “get the write off” and then find out in the spring that roughly half the price tag was never deductible in the first place.

Step 7: Class 10 or Class 10.1, and why the difference matters

Capital cost allowance is the tax version of depreciation, and vehicles sit in one of two classes. Both run at 30 percent on a declining balance. The difference is the ceiling.

A passenger vehicle that cost more than the year’s threshold before tax goes into Class 10.1, and each such vehicle is listed separately rather than pooled. Anything at or under the threshold goes into Class 10 with everything else. Eligible zero emission vehicles go into Class 54 instead, with the $61,000 cap.

Listing separately matters on the way out. A Class 10 vehicle sold for more than its remaining balance can pull the whole pool down and create recapture, which is taxable income. Class 10.1 has its own treatment on disposal. Neither is something to work out on the fly in the year you sell, which is one of the honest reasons to have a bookkeeper on the month and an accountant on the year.

Leasing sidesteps the class question but not the ceiling. The lease deduction runs through the CRA’s Chart C calculation, which compares your actual payments against the prescribed $1,100 monthly limit and the manufacturer’s list price. On an ordinary vehicle the answer is usually your full payments. On an expensive one, it is not.

If you are incorporated, consider the per kilometre allowance instead

If your corporation owns the vehicle and you drive it personally, you have created a taxable benefit that has to be calculated and reported. That is real work every year, and it surprises owners who assumed putting the car in the company was the tax efficient move.

The cleaner route for most owner managers with one vehicle is to own it personally and have the corporation pay a reasonable per kilometre allowance for business driving. For 2026, Finance confirmed the tax exempt limits at 73 cents per kilometre for the first 5,000 kilometres and 67 cents after that in the provinces, and 77 cents and 71 cents in the territories. Paid on those terms and supported by a log, the allowance is deductible to the corporation and not taxable to you.

It is the same arithmetic that governs what you pay anyone else who drives for the business, so the rates matter the moment you put your first employee on payroll. And it is a different question from how you take the rest of the money out of the corporation, which has its own rules.

What this looked like from the auditor’s chair

The vehicle claim was almost never the reason a file got opened. It was almost always one of the first things reduced once the file was open, and the pattern was consistent enough to describe.

The first thing we looked at was not receipts. It was whether the percentage was plausible for a household. A single vehicle in a two person home, claimed at 95 percent business, invites the obvious question: what did the family drive to the grocery store. Groceries, school runs and weekends are real kilometres, and a claim that leaves no room for them is arguing that they never happened.

The second was the odometer. Total kilometres over the life of the ownership are knowable from service records and the sale, and they are hard to argue with. When the yearly totals on the schedule added up to substantially more or less than the vehicle had actually travelled, that was not a small correction. It was a reason to doubt the schedule.

And the reduction was rarely a negotiation. Without a contemporaneous record, there is nothing to negotiate against. An estimate reconstructed at filing time is an assertion, not evidence, and it tends to be replaced by whatever conservative number the auditor can support. Owners who kept a real log kept their deduction, including the ones whose percentages were high, because a high number with a record behind it is a fact.

If you want the wider view of how those conversations run, we wrote a companion piece on what auditors look for during a CRA audit. The vehicle line is a small part of it and a good early warning sign.

Three things that are commonly wrong

Copying the American rule. There is no Canadian equivalent of the United States standard mileage rate for a self employed person deducting their own vehicle. You deduct the business share of actual costs, and you support it with a log. The per kilometre figures above are limits on allowances paid to employees, not a shortcut for an owner’s own return. This mix up is so common online that it is one of the clearest examples of why AI gets tax questions wrong, because the American answer is far more abundant on the internet than the Canadian one.

Assuming the CRA already knows. Vehicle deductions are self reported and self supported. Nothing about them arrives on a slip. The CRA’s automatic and prefilled filing services are built on slips, which is exactly why automatic tax filing excludes business and self employment income. If you claim a vehicle, you are filing a real return with real support behind it.

Wrapping personal branding into the vehicle. A wrap or a decal does not convert personal driving into business driving. The advertising cost may be deductible, but the kilometres are still judged by the purpose of each trip. Owners in visible, personal brand businesses get this wrong most often, which is why we covered it in our piece on what content creators can write off.

Vehicle costs are one line in a bigger picture, and the same two part test governs all of it. If you want the full map of what you can write off as a small business owner, start there and come back for the vehicle detail. If you are earlier than that and still building the system, our beginner’s guide to small business bookkeeping shows where a vehicle log sits alongside everything else you have to track.

Frequently asked questions

Do I really need a mileage log, or can I estimate?

You need a log. The CRA calls an accurate logbook kept for the whole year the best evidence of business use, and it expects the date, destination, purpose and kilometres for each business trip, plus odometer readings at the start and end of the fiscal period. An estimate made at filing time is an assertion rather than evidence, and it is the usual reason vehicle claims get reduced.

Is driving from home to my office a business kilometre?

No. The CRA treats driving back and forth between home and work as personal use, and owning the business does not change that. Travel from your place of business to a client, a supplier or a job site is business driving. If your home is genuinely your main place of business, trips from home to a client count as business travel.

How much of a vehicle can I write off in 2026?

For a passenger vehicle acquired on or after 1 January 2026, capital cost allowance is capped at $39,000 before tax, no matter what you paid. Lease deductions are capped at $1,100 a month before tax and loan interest at $350 a month. Zero emission passenger vehicles in Class 54 have a higher ceiling of $61,000. Anything above those limits is never deductible.

Can I skip the logbook after keeping one for a full year?

Partly. Once you have a complete 12 month base year logbook, you can use a three month sample period in later years to project annual business use, as long as the projected figure lands within 10 percentage points of the base year and the vehicle is still used in the same way. Keep the base year logbook for six years from the end of the last tax year you used it.

Should the vehicle be owned by my corporation or by me?

For most owner managers with a single vehicle, owning it personally and taking a reasonable per kilometre allowance from the corporation is simpler. A corporate owned vehicle used personally creates a taxable benefit that has to be valued and reported every year. The 2026 tax exempt allowance limits are 73 cents per kilometre for the first 5,000 kilometres and 67 cents after that in the provinces.

Get the log right once and stop losing the deduction

The vehicle deduction is not complicated. It is just unforgiving, because the evidence has to be created while you drive and cannot be manufactured afterwards. Set up a log that captures four fields automatically, note the odometer on the first and last day of the year, and the claim defends itself.

If your books are behind and the vehicle numbers are part of what needs rebuilding, that is ordinary work and it is part of our monthly bookkeeping. Get in touch and we will tell you plainly what your records will and will not support.