In most of Canada, you can get a car insurance discount for putting four winter tires on your vehicle, but you usually have to ask for it. In Ontario, insurers are required by regulation to offer a winter tire discount. In other provinces with private insurers, such as Alberta, Nova Scotia and New Brunswick, the discount is optional, though many companies offer one. In British Columbia, Saskatchewan and Manitoba, where basic coverage comes from a public insurer, the rules work differently.
The size of the winter tire insurance discount varies by insurer and is typically a small percentage of part of your premium. It will not transform your bill, but it is easy money if you already run winter tires. This guide explains who offers it, what tires qualify, and how to claim it without creating problems at renewal or claim time.
How the winter tire insurance discount works
Insurers offer the discount because winter tires improve braking and grip in cold, snowy and icy conditions, which can reduce the chance of a collision. Lower expected claims can justify a lower premium.
In practice, the discount usually comes with conditions:
- All four tires. Two winter tires on the drive axle generally do not qualify.
- A defined season. Each insurer sets the months the tires must be on the vehicle, typically covering the colder part of the year.
- Qualifying tires. Most insurers look for the three-peak mountain and snowflake symbol on the sidewall.
- Disclosure. You must tell your insurer or broker. Discounts are rarely applied automatically.
The discount often applies to certain parts of the premium rather than the whole bill, so the dollar saving depends on your policy, your vehicle and your insurer. Ask for the actual dollar amount on your quote rather than relying on a percentage.
Winter tire discount by province
The table below summarizes how things generally work. Rules and programs change, so confirm the current details with your insurer or your province's public insurer.
| Province or territory | Who sells basic auto insurance | Winter tire discount |
|---|---|---|
| Ontario | Private insurers | Insurers must offer a discount; terms and amount vary by company |
| Alberta | Private insurers | Optional; offered by many insurers |
| Atlantic provinces (NS, NB, PEI, NL) | Private insurers | Optional; offered by many insurers |
| British Columbia | ICBC (basic), private or ICBC (optional) | Check with ICBC and any optional-coverage insurer; winter tires are required on many highways in season |
| Saskatchewan | SGI (basic) | Check with SGI and your broker for current programs |
| Manitoba | MPI (basic) | MPI has offered winter tire financing in the past; check MPI for what is available now |
| Territories | Private insurers | Optional; ask your insurer |
Ontario: a required offer, not a fixed amount
Ontario is the clearest case. Insurers approved to sell auto insurance in the province must offer a discount to drivers who install winter tires. Regulation does not set one standard discount amount, so the saving and the qualifying dates differ from company to company. That makes it worth comparing when you shop for car insurance in Ontario, especially since other policy changes have made premiums more variable.
An insurer also cannot raise your premium simply because you decline to use winter tires. The discount is a reward, not a requirement.
British Columbia: a legal requirement on many roads
In BC, the bigger issue is often the law rather than insurance. Winter tires or chains are required on many highways during the designated winter season, which is marked by signs on those routes. The province's transportation ministry publishes the current dates, routes and the tire markings that qualify. Driving on a designated highway without proper tires can lead to a fine, regardless of your insurance.
Because ICBC provides basic coverage, ask ICBC or your broker directly whether any winter tire savings apply to your policy rather than assuming the Ontario-style discount exists.
Alberta and Atlantic Canada
There is no requirement for insurers to offer a winter tire discount in these provinces, but many do. If your current insurer does not, that is one factor to weigh when comparing quotes. It is rarely worth switching for the winter tire discount alone, but it can tip the balance between two similar quotes.
What tires qualify for the discount
This is where drivers most often get tripped up.
- Winter tires with the mountain snowflake symbol. These almost always qualify.
- All-weather tires. Many all-weather tires also carry the mountain snowflake symbol. Some insurers accept them for the discount, and some do not. Ask before you assume.
- All-season tires. Tires marked only "M+S" (mud and snow) are generally not treated as winter tires for discount purposes, even though they may meet minimum legal rules on some BC highways if tread depth is sufficient.
- Worn tires. A tire with very little tread left may still carry the symbol but will not perform like a winter tire. Some insurers specify a minimum tread depth.
If your insurer's rules are unclear, ask them to put the qualifying criteria in writing or point you to the section of your policy that explains them.
How to claim your winter tire discount
Getting the discount is usually simple:
- Install four qualifying tires before the start of your insurer's winter period.
- Contact your insurer or broker and say you use winter tires. Ask when the discount applies and what months it covers.
- Keep proof. Save the purchase or installation receipt, and consider taking a dated photo of the sidewall symbol. Some insurers ask for this; others do not but may check later.
- Confirm it on your documents. Check your policy declarations or renewal notice to make sure the discount appears.
- Update your insurer if things change. If you sell the car, stop using winter tires or switch to a vehicle without them, tell your insurer.
If you bought winter tires mid-term, ask whether the discount can be applied now or only at renewal. Practices differ.
Common mistakes to avoid
Assuming the discount is automatic. Many drivers who use winter tires every year never receive the discount because they never told their insurer.
Claiming the discount and then not using the tires. Your premium is based on what you tell your insurer. If you claim a winter tire discount but drive on all-seasons, the insurer may adjust your premium or raise questions if it learns this during a claim. Accurate information protects you.
Forgetting a second vehicle. The discount is generally per vehicle. If only one car has winter tires, only that car should carry the discount.
Focusing on the discount instead of the tires. The safety benefit of winter tires is usually worth more than the premium saving. A collision you avoid protects your claims history, which affects your rates for years.
Does not having winter tires affect a claim?
In most provinces, not having winter tires does not by itself void your coverage or lead to a claim being denied. Fault in a collision is generally determined by the circumstances and your province's fault rules, not by your tire choice alone.
That said, how you drove for the conditions matters, and inaccurate information on your application is a separate problem. If you told your insurer you had winter tires to get a discount and you did not, that misstatement could create complications. Check your policy wording or ask your broker if you are unsure how this applies to you.
Is the winter tire discount worth it?
On its own, the discount rarely pays for a set of winter tires. Where it adds up is over several winters, combined with other savings such as bundling home and auto, winter tire financing programs where available, and a clean driving record that winter tires can help you keep.
If you live somewhere with real winters and already use winter tires, there is no good reason to leave the discount on the table.
Next step
If you have winter tires on now, a quick call to your insurer is the easiest win. When your policy comes up for renewal, you can compare car insurance quotes on Instasure and ask each insurer how its winter tire discount works before you choose.
