How is the standby charge calculated on a company car?

The standby charge is calculated as: 2% × cost of the car (including taxes) × number of months available. For a $40,000 car available for 12 months: 2% × $40,000 × 12 = $9,600 standby charge. If the car is leased, the formula uses the lease cost instead: two-thirds (2/3) of the monthly lease payment × months available. The standby charge can be reduced if your employment-use kilometres exceed 50% of total kilometres driven — meaning you use the car more for work than personal.

What is the operating cost benefit on a company car?

The operating cost benefit covers the personal portion of car expenses the employer pays — gas, oil, insurance, maintenance, etc. The standard calculation is: $0.33 per personal-use kilometre (2026 CRA rate). Alternatively, if the standby charge is reduced (you drive more than 50% for employment), you can elect to use the simpler calculation: 50% of the standby charge. You must notify your employer in writing before the end of the tax year to use the 50% election. Keep a logbook to track personal vs business kilometres.

How do I reduce the taxable benefit on my company car?

There are two primary ways to reduce your company car taxable benefit: (1) Drive more kilometres for employment purposes — if your employment-use percentage exceeds 50%, the standby charge is proportionally reduced; and (2) Reimburse your employer by December 31 for your personal-use operating costs (at the CRA rate per kilometre) — this eliminates the operating cost benefit. Keeping a detailed mileage logbook throughout the year is essential. Some employees find it cheaper to reimburse the entire operating cost benefit rather than having it included in income.

What T4 boxes show the company car benefit?

Company car benefits appear in: Box 34 (Automobile benefit) — shows the total value of the automobile benefit; Box 40 (Other taxable allowances and benefits) — may also include it or other benefits; Box 14 (Employment income) — the automobile benefit is already included in Box 14. The automobile benefit is also used to calculate your Canada Pension Plan contributions and income tax withholding through payroll.

Does the company car benefit apply to a car allowance as well?

Car allowances are treated differently from employer-provided cars. A reasonable car allowance paid to an employee to use their own vehicle for employment purposes is not taxable if it is based solely on the number of employment kilometres driven (per-kilometre rate). An unreasonable or flat-rate car allowance is a taxable benefit. The 2026 CRA allowance rate is $0.72 per kilometre for the first 5,000km and $0.66 per kilometre thereafter. An allowance above these rates is partially taxable; a flat monthly car allowance unrelated to kilometres is fully taxable.

Is a Company Car a Taxable Benefit in Canada? | Standby Charge Explained

Q: Is a company car a taxable benefit in Canada?

Yes. If your employer provides you with a company car that you can use for personal driving — including commuting to and from work — CRA treats the value of that personal use as a taxable employment benefit. There are two components: the standby charge (for the right to use the car) and the operating cost benefit (for the personal portion of operating costs paid by the employer). Together these can add thousands of dollars to your T4 income annually. The benefit is reported in Box 34 (automobile benefit) and Box 40 of your T4.

Is a Company Car a Taxable Benefit in Canada?

A company car available for personal use creates two taxable benefits: the standby charge (for having access to the car) and the operating cost benefit (for the personal share of costs your employer covers). Together, these can add $5,000–$15,000+ to your T4 income depending on the car’s value and your driving patterns.

Two Components of the Automobile Benefit

Component	What it represents	Calculation method
Standby charge	Value of having access to the car (right to use)	2% × cost × months (owned car) or 2/3 × monthly lease × months (leased car)
Operating cost benefit	Personal share of fuel, insurance, maintenance paid by employer	$0.33/personal km (2026) OR 50% of reduced standby charge

Standby Charge Formula: Employer-Owned Car

Formula element	Example
Car cost (including taxes)	$48,000
Months available	12
Standard standby charge	2% × $48,000 × 12 = $11,520

Reduced standby charge (if employment use > 50%):

Formula element	Example
Total kilometres driven	25,000 km
Personal-use kilometres	8,000 km
Employment use %	(25,000 − 8,000) ÷ 25,000 = 68% (over 50%)
Personal-use ratio	8,000 ÷ 20,004 = 0.40 (using the minimum denominator)
Reduced standby charge	$11,520 × 0.40 = $4,608

The denominator for the reduction is: (number of months × 1,667 km/month).

Standby Charge Formula: Leased Car

Formula element	Example
Monthly lease payment (including taxes, excluding insurance)	$700
Months available	12
Standard standby charge	2/3 × $700 × 12 = $5,600

Operating Cost Benefit

Standard Method

Formula	Example
Personal-use kilometres × $0.33 (2026 rate)	8,000 × $0.33 = $2,640

50% Election Method (requires > 50% employment use)

Formula	Example
50% × standby charge	50% × $4,608 = $2,304

Use whichever is lower — but the 50% election must be elected in writing to your employer before year-end.

Reducing the Amount Employee Reimburses to Employer

Reimbursement	Effect
Repay operating costs by Dec 31 (at CRA rate/km for personal km)	Eliminates the operating cost benefit
Repay standby charge by Feb 14 following year	Reduces standby charge dollar-for-dollar
Keep detailed logbook	Required to qualify for reductions

Full Example

Item	Amount
Car cost	$50,000
Total km driven	24,000
Personal km	9,000
Employment km	15,000 (62.5% > 50%)
Standby charge (standard)	2% × $50,000 × 12 = $12,000
Personal-use ratio (9,000 ÷ 20,004)	0.45
Reduced standby charge	$12,000 × 0.45 = $5,400
Operating cost (standard)	9,000 × $0.33 = $2,970
Operating cost (50% election)	50% × $5,400 = $2,700
Employee uses 50% election	$2,700
Total automobile benefit	$5,400 + $2,700 = $8,100
Tax at 40% marginal rate	~$3,240

T4 Reporting

Box	Content
Box 34 — Automobile benefits	Total automobile benefit (standby charge + operating cost)
Box 14 — Employment income	Includes automobile benefit
Box 40	May include automobile benefit if employer combines it here

Car Allowance vs Company Car: Tax Comparison

Arrangement	Taxable?	Notes
Company car (personal use)	✅ Yes — standby charge + operating cost	Per formulas above
Per-kilometre allowance (reasonable CRA rate)	❌ Not taxable	Based on employment km only
Flat monthly car allowance	✅ Fully taxable	Unrelated to km driven
Allowance above CRA rate	✅ Excess is taxable	Amount exceeding $0.72/$0.66

Logbook Requirements

Requirement	Details
Full logbook year	Required at least one year to establish employment-use %
Retention	Keep for audit purposes (6+ years)
Contents	Date, destination, purpose, km for each trip
Simplified (representative period)	CRA allows a 3-month sample period after a full base year

Bottom Line

A company car available for personal use is one of the largest potential taxable benefits on a Canadian T4. The standby charge and operating cost benefit formulas can produce a $5,000–$15,000 annual income inclusion for an expensive car with significant personal use. The key levers to reduce the benefit: drive more of your kilometres for work (exceed 50% employment use to trigger the reduction), keep a logbook to document the split, and consider reimbursing your employer for personal operating costs by year-end. An employee who primarily uses a company car for business can significantly reduce the taxable amount; one who mostly commutes adds a substantial benefit to their income.

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