Your Whitby HVAC truck, your Pickering medical practice SUV, your Oshawa real estate crossover: at some point every incorporated business owner in Durham Region asks the same question. Should you buy a vehicle for your business through the corporation, or should you own it personally and bill the company for mileage? The 2026 numbers moved, and a new federal measure called the Productivity Mega Deduction changes the year-one math for the first time in a long time. The tax implications are different for each route, and the type of vehicle you pick also matters. Here is how it actually works.
Key takeaways
- For new or used passenger vehicles acquired on or after 1 January 2026, the Class 10.1 capital cost ceiling is $39,000 before GST/HST, up from $38,000 in 2025. The ceiling for zero-emission passenger vehicles (Class 54) stays at $61,000.
- The 2026 monthly lease cost cap is $1,100 before tax, and the monthly interest cap on a passenger vehicle loan is $350.
- The 2026 tax-exempt reasonable allowance an Ontario corporation can pay an employee for business use of a personal vehicle is 73 cents per kilometre for the first 5,000 km and 67 cents per kilometre after that.
- The 2026 operating expense benefit rate is 34 cents per personal kilometre (31 cents for employees principally selling or leasing vehicles).
- The proposed Productivity Mega Deduction allows a 100% write-off in the year a qualifying asset becomes available for use, for property acquired on or after 15 September 2026. Class 10.1 passenger vehicles can qualify, but only when the vehicle is new and assembled in Canada, and the $39,000 cost cap still applies.
How to deduct motor vehicle expenses through your corporation
When your corporation owns or leases the company vehicle, three categories of motor vehicle expenses for business sit on the corporate T2 return and one taxable benefit lands on your personal T4. The deductible expenses include capital cost allowance (CCA) on the purchase price, or the monthly lease payment if you lease, plus the actual expenses to operate the car: fuel, insurance, maintenance, licence, and interest on any loan. The CRA caps all four for passenger vehicles under what it calls Class 10.1. The underlying rule is that any business vehicle expense is deductible only to the extent you use the vehicle to earn business income.
The taxable benefit is the catch. If the corporation that owns the car makes it available to you and you drive it for personal errands, grocery runs, or your kid's hockey practice, the Canada Revenue Agency treats the personal use of the vehicle as employment income. Two parts: a standby charge for having the vehicle available, and an operating benefit for personal kilometres the company paid to run. The rules are imposed by the CRA at the federal level and apply the same way across every province. Many small business owners miss this and get surprised at tax time by a significant tax bill on top of their own salary.
A pickup used almost entirely for a job site, or a cargo van, usually avoids the Class 10.1 cap because the CRA classifies it as a motor vehicle rather than a passenger vehicle. The split hinges on seating, weight, and the portion used for business to transport goods or equipment. Vehicle-related expenses on a Durham HVAC contractor's crew truck, bought as a vehicle for work and used for business purposes almost every day, often qualify as motor vehicle expenses without the Class 10.1 cap. A dental practice's SUV, often a luxury vehicle whose car expenses mix personal and clinic use, rarely does.
Tracking business use of the vehicle
Every option below depends on a defensible mileage log. The CRA wants a logbook that captures the date, destination, business purpose, and kilometres for each business trip, plus an odometer reading at the start and end of the fiscal year. The percentage of business use is business kilometres divided by total kilometres, based on the number of kilometres actually driven for work. That single number drives every number on your tax return from a tax perspective: the portion of motor vehicle expenses the corporation can deduct, the reduced standby charge threshold, and whether a personal and business split of the vehicle is reasonable. A full-year log once is enough; after that a sample three-month log can be used, provided the result stays within 10% of the full-year baseline. Without a log, every business expense tied to the vehicle use is at risk if the CRA asks, and expenses related to business use may be reduced on reassessment.
2026 CRA limits for passenger vehicles
Finance Canada announced the 2026 automobile deduction limits on 14 January 2026. The headline numbers:
| 2026 limit | Amount | Rule |
|---|---|---|
| Class 10.1 capital cost ceiling (passenger vehicle) | $39,000 before GST/HST | New or used, acquired on or after 1 January 2026 |
| Class 54 capital cost ceiling (zero-emission passenger vehicle) | $61,000 before GST/HST | New or used, acquired on or after 1 January 2026 |
| Monthly deductible lease cost | $1,100 before tax | New leases entered into on or after 1 January 2026 |
| Monthly deductible interest on a passenger vehicle loan | $350 | New loans on or after 1 January 2026 |
| Tax-exempt per-kilometre allowance (Ontario) | 73 cents (first 5,000 km), 67 cents thereafter | Employer paying an employee for business use of their own vehicle |
| Operating expense benefit rate | 34 cents per personal km (31 cents for auto sellers) | Where the employer pays operating costs |
Two things to notice. First, the $39,000 Class 10.1 cap is the ceiling on the depreciable cost, not the first-year deduction. Under the normal half-year rule, CCA on a Class 10.1 vehicle is 30% of the capped amount, with only half of that in the year of acquisition, so a $65,000 SUV bought in July 2026 under the old rules would generate about $5,850 of CCA that year, not $19,500. Second, the $350 monthly interest cap is $4,200 a year of deductible interest, no matter what the actual loan interest is.
You can verify the current figures on the Department of Finance release and the CRA guidance: 2026 automobile deduction limits and automobile and motor vehicle benefits.
Standby charge and operating benefit in 2026
When the corporation owns or leases the vehicle and makes it available to you, two personal taxable benefits land on your T4.
Standby charge. For a corporate-owned passenger vehicle, the standby charge is 2% of the vehicle's actual cost (not the capped cost) multiplied by the number of months the vehicle is available to you. On a leased vehicle, it is two-thirds of the monthly lease cost. A reduced standby charge is available if you use the vehicle more than 50% for business and your personal driving is 1,667 kilometres or less per month on average. In that case, the standby charge scales down by the ratio of personal kilometres to 1,667 times the months of availability.
Operating benefit. On top of the standby charge, you add 34 cents per personal kilometre for 2026 (31 cents if you principally sell or lease vehicles). If more than half your driving is business and you tell your employer in writing by 31 December, you can elect the alternative method: half the standby charge instead of the per-kilometre rate.
Reimbursement. The corporation can reimburse itself: any cash you pay back for personal use during the year, or before 14 February of the following year, reduces both benefits dollar for dollar. Many Durham owners write a cheque to their corporation in January to clear or shrink the T4 benefit for the prior year.
The 2026 Productivity Mega Deduction and your corporate vehicle
On 15 September 2026 the federal government proposed the Productivity Mega Deduction. Draft legislation and a backgrounder from Finance Canada propose a 100% write-off in the year a qualifying asset becomes available for use, for property acquired on or after that date. It replaces, for the moment, the slower accelerated investment incentive on most capital assets.
For a passenger vehicle that your corporation buys and uses, the proposal does three important things:
- The 100% deduction applies to Class 10 and Class 10.1 property, but only if the vehicle is new and assembled in Canada. A used vehicle, or a brand-new vehicle assembled outside Canada, is excluded.
- The $39,000 Class 10.1 cost cap still applies. The Mega Deduction accelerates the timing, it does not raise the ceiling. On a $65,000 SUV, the corporation can expense $39,000 in year one (plus the non-recoverable portion of GST/HST), not the sticker price.
- The proposal lets Class 10.1 taxpayers elect out, which matters for owners with low taxable income this year who would rather spread the deduction into higher-income future years.
The proposal is draft legislation at the time of writing, which means it is reasonable to plan around but is not yet law. Whether you lease or buy a vehicle, motor vehicle expenses could still be subject to the standard Class 10.1 caps if the Mega Deduction does not pass as drafted. Confirm with your CPA before closing on a vehicle on the strength of the Mega Deduction alone.
Corporate vehicle buy, lease, or personal mileage: the Durham tax math
There is no universal right answer to whether to buy or lease, and whether to lease or buy sits beside a third question: own it personally and bill mileage. The three options play out differently for a Whitby chiropractor, a Pickering landscaping company, and an Ajax real estate agent, because the right answer depends on business kilometres as a share of total kilometres, on whether you deduct a lease payment or claim CCA, and on the vehicle costs themselves. From a tax perspective it is rarely obvious; from a financial and tax perspective combined, the right call also depends on cash flow, down payment, and resale value.
Own the vehicle personally, bill the corporation per kilometre. With a personal vehicle for business purposes, the corporation pays you 73 cents per business km for the first 5,000 km and 67 cents after that, tax-free in your hands, deductible to the corporation. No standby charge, no operating benefit, no CRA auto log on your T4. The tax benefits are simple and clean. Best when business use is under about 70% of total kilometres, or when the vehicle costs well above $39,000. If you want to buy a car just for mixed personal and business purposes, this is usually the cleanest path.
Buy through the corporation. When the corporation owns the vehicle, it deducts CCA (capped at $39,000) and operating costs, and you take the standby charge and operating benefit on your T4. Best when business use is at or above 90%, when the vehicle qualifies as a motor vehicle rather than a passenger vehicle, or when the vehicle is a new Canadian-assembled model that qualifies for the Mega Deduction and you have corporate income to shelter in the acquisition year. A zero-emission vehicle in Class 54, included in the broader zero-emission passenger vehicles rule, gets a higher $61,000 ceiling, which can shift this math further for tax purposes.
Lease through the corporation. Leasing a company car means the corporation deducts the lease payment up to a maximum monthly lease payment of $1,100 per month before tax, plus operating costs. The same standby charge and operating benefit rules apply. Lease math usually beats buy math when the vehicle costs well above the $39,000 cap, because the monthly cap of $1,100 is less punitive than the CCA cap on $39,000 against a $70,000 price tag. Whether you lease or buy, the standby and operating benefit math stays the same once the corporation makes the car available for personal use.
Buy, lease, or bill mileage: a side-by-side
| Own personally, bill mileage | Buy through the corporation | Lease through the corporation | |
|---|---|---|---|
| Corporation deducts | 73 cents / 67 cents per business km, tax-free to you | CCA capped at $39,000, plus operating costs | Lease payment up to $1,100 a month, plus operating costs |
| T4 benefit to you | None | Standby charge plus operating benefit | Standby charge plus operating benefit |
| Best when | Business use under about 70%, or the car costs well above $39,000 | Business use 90% or more, the vehicle is a motor vehicle, or a new Canadian-assembled model for the Mega Deduction | The car costs well above $39,000 and you want a lower monthly cost than the CCA cap allows |
The break-even is business use. Below about 70% business use, personal ownership with a mileage claim almost always wins, because there is no standby charge and no operating benefit to carry. Above about 90% business use, buying or leasing through the corporation usually wins, because the deduction is large and the personal-use benefit is small. Between 70% and 90% it is close, and the further the vehicle costs above the $39,000 cap, the more personal ownership or a lease pulls ahead of buying.
Worked example: a Whitby chiropractor and a $65,000 SUV
Sarah runs a chiropractic clinic in Whitby through her corporation, Spine Care Whitby Inc. She drives roughly 25,000 km a year total: 20,000 business km (home visits, Oshawa and Ajax satellite days, continuing education in Toronto) and 5,000 personal km. On 1 November 2026 she buys a new Canadian-assembled SUV for $65,000 before 13% HST. Her corporation's fiscal year ends 31 December.
Option A: Corporation buys the SUV, Mega Deduction, year one. The corporation can add $39,000 (plus the non-recoverable HST portion) to Class 10.1 and expense 100% of it in 2026 under the proposed Mega Deduction. Call it a $39,000 corporate deduction in year one, which at the Ontario combined small-business rate of 11.2% saves roughly $4,368 of corporate tax. Operating costs (fuel, insurance, maintenance) for the two months she owns it in 2026, say $1,200, are fully deductible. On her personal T4, the standby charge is 2% × $65,000 × 2 months of availability = $2,600. The operating benefit is 34 cents × 5,000 personal km × (2/12) = $283. A reduced standby charge is available because her business use is over 50% and her personal kilometres per month are well under 1,667. Reduced standby = 2% × $65,000 × ($833/$3,333) = $650. Net 2026 T4 benefit: about $933. At Sarah's 43.41% Ontario marginal rate, that costs her $405 of personal tax.
Option B: Sarah owns the SUV personally, bills mileage. The corporation pays her 73 cents × 5,000 + 67 cents × 15,000 = $3,650 + $10,050 = $13,700 per year, tax-free to her, fully deductible to the corporation. No standby charge, no operating benefit, no T4 line. In 2026, with the SUV in service for only two months, business kilometres are roughly 3,333, so the mileage payment is 73 cents × 3,333 = $2,433, saving the corporation about $273 of tax (11.2% × $2,433).
Over a full year, Option A pulls ahead because of the Mega Deduction, but only in the acquisition year. From 2027 onward, with no new large deduction, Option A keeps generating a $19,000+ annual T4 benefit while Option B keeps paying tax-free mileage. Across a five-year hold, Option B frequently wins for an owner-operator with mixed business and personal use. The Mega Deduction tips the scale toward Option A for owners buying a new Canadian-assembled vehicle in a very high-income year.
Where this goes wrong
The reassessments we see most often trace back to the same few things:
- No logbook. Without a mileage record, the CRA can deny the business share of every vehicle expense and recalculate the standby charge as if all the driving were personal.
- Personal use understated. Claiming 95% business on a vehicle that also does the school run does not survive a review.
- Calling a passenger vehicle a motor vehicle. A five-seat SUV is not a cargo van, and misclassifying it to dodge the $39,000 cap is a common and costly error.
- Forgetting the T4 benefit. The deduction goes on the corporate return, but the standby charge and operating benefit must appear on your personal T4, or the whole arrangement unravels on audit.
FAQ
Can my corporation write off 100% of a vehicle in 2026?
Only in two situations. If the vehicle is a motor vehicle (a cargo van, a crew-cab pickup used primarily to transport goods or equipment for business purposes), its full cost goes into Class 10 or Class 16 without the $39,000 cap. If the vehicle is a passenger vehicle acquired on or after 15 September 2026 and the Productivity Mega Deduction proposal is enacted, the corporation can expense the full Class 10.1 capped amount ($39,000 of the cost, plus non-recoverable HST) in the year it becomes available for use, provided the company car is new and assembled in Canada. This is a sizeable tax deduction for small business owners buying a new Canadian-made vehicle this fall.
Is it better to lease or buy a vehicle through my corporation in 2026?
Lease when the vehicle costs well above $39,000, because the $1,100 monthly cap bites less than the $39,000 Class 10.1 cap on a $70,000 purchase. Buy when the vehicle costs at or below the cap, when it qualifies as a motor vehicle, or when you want to own the asset at the end of the term. Run the five-year total-cost comparison on purchasing or leasing a vehicle before you sign anything.
How does the standby charge work in 2026?
The standby charge is 2% of the vehicle's actual purchase cost multiplied by the number of months the corporation makes it available to you, for a vehicle the corporation owns. On a lease it is two-thirds of the lease payment. The charge is reduced where your business use is more than 50% and your personal kilometres average 1,667 or less per month. You can also deduct motor vehicle expenses the corporation reimburses itself for: pay the corporation back for personal use by 14 February of the following year, and both benefits drop dollar for dollar.
What per-kilometre rate can my corporation pay me tax-free in 2026?
In Ontario, 73 cents per kilometre for the first 5,000 business kilometres in the year, then 67 cents per kilometre after that. The rate is tax-free to you and deductible to the corporation, as long as it is based on actual kilometres used for business, is paid at or below the CRA reasonable amount, and you keep a logbook. The same rate applies in every province.
Run the vehicle math before you buy
We work with Durham Region business owners every day on the purchase or lease versus personal-ownership question, from chiropractors in Whitby to contractors in Ajax, landscapers in Pickering, and real estate agents in Oshawa, Clarington, Bowmanville, and Uxbridge. If your corporation is weighing a vehicle purchase before year-end, your accountant can run the five-year business taxes math and the Mega Deduction eligibility check before you sign.
This article is for general information only and does not replace professional tax advice. Tax rules change, and your specific situation matters. Always confirm with a qualified CPA before making tax decisions.
