Car seat laws in Canada and taking your baby home

Two layers of rules: how seats are built, and how children ride

Canada splits car seat rules in two. Federal regulations set the standards every seat must be built to, the Canada Motor Vehicle Safety Standards (CMVSS), and control which seats can be imported. Provincial law decides how a child must ride: when they can face forward, when they can leave a booster, and what happens if you get it wrong. Those rules differ, sometimes sharply, between provinces.

The federal standard: CMVSS 213 and the National Safety Mark

The Motor Vehicle Restraint Systems and Booster Seats Safety Regulations require every child restraint to conform to CMVSS 213, every infant seat to CMVSS 213.1 and every booster seat to CMVSS 213.2. Separate standards cover restraints for disabled people and for infants with special needs.

The proof is the National Safety Mark, a symbol at least 50mm across that must be stitched, moulded or permanently printed on the seat. The federal government authorises a company to apply it on condition that the seat conforms to all the applicable standards. A company must not import a car seat or booster seat into Canada unless it has applied the mark. The regulations also require every child restraint to show its date of manufacture and the weight and height range it is designed for, and every child seat that can be used rear-facing must carry an airbag warning label.

The Government of Ontario tells parents that the National Safety Mark "indicates that the seat complies with Canadian regulations and standards and is legal for use in Canada". British Columbia's regulation names the Canadian standards directly. So before using a seat bought in the United States, look for the mark. A seat without it does not pass Ontario's test or meet BC's rule. Our US car seat guide explains the American system.

What the law requires in three provinces

These are the current rules in Ontario, British Columbia and Alberta, from each province's own law or guidance. If you live elsewhere, check your provincial transport ministry.

Ontario: your child can use a seatbelt alone once they turn 8, or weigh 36kg, or reach 145cm, whichever comes first. If convicted of failing to secure a child, you face a $240 fine and two demerit points, and the rule applies to visiting drivers too.

British Columbia: the regulation defines a child as a person under 9, so the booster rule runs until your child reaches 145cm or turns 9. A rear-facing seat must not be used in a seating position with an active frontal airbag. Each stage can continue beyond the minimum until the seat's own limits are reached.

Alberta: the law requires a child safety seat only for children under 6 who weigh 18kg or less, and the province says plainly that booster seats are not required by law. Drivers must make sure children aged 6 to 15, or heavier than 40lb, wear a seatbelt.

What is safest, whatever your province

The legal minimum is not the safe choice. Alberta's own guidance says a child is safest rear-facing until they are at least 2 years old or reach the seat's maximum height or weight, and Ontario says it is safest to keep a child in a car seat or booster until they reach the seat's maximum limits. A seatbelt fits only when it crosses the chest and hips rather than the neck and stomach, typically when a child is at least 145cm and between 8 and 12 years old. Both provinces advise keeping children in the back seat until they are 13.

The stakes are real. Alberta reports that child safety seats reduce the risk of serious and fatal injury by around 60 to 70%. Our guide to when babies can face forward compares the rule in each country, and the car seat stage checker helps you decide when to move up.

Bringing your baby home: fitting checks

Misuse is common: Alberta cites research finding misuse rates of 44 to 81% for car seats and 30 to 50% for booster seats across Canada. Ontario's fitting checklist is a good standard to work to:

• Fit the seat in the back seat, away from active airbags.
• Recline a rear-facing seat to the angle shown on its indicator.
• Route the seatbelt or universal anchorage system (UAS) through the correct belt path. There should be no more than 2.5cm (1in) of movement at the belt path.
• Rear-facing harness straps come from the slot at or below your baby's shoulders; forward-facing straps at or above.
• The harness should be snug enough that you cannot pinch any excess webbing, with the chest clip at armpit level.
• Skip bulky clothing and aftermarket products; most seats do not allow them.

Use the seat for travel, not as a bed when you arrive. See can my baby sleep in a car seat.

Taxis, rideshare and buses

Ontario exempts drivers of a taxicab carrying a paying passenger, except when the trip is for personal reasons or under a school board contract, along with buses and public vehicles for hire and ambulances. Vehicles with only lap belts are exempt from the booster rule only. Ontario's published list names taxicabs, not rideshare.

British Columbia exempts taxis too, but not a vehicle operating only under a transportation network services authorization, the licence used for ride-hailing. In BC, the child seat rules apply in those cars. An exemption only means the driver will not be charged; it does not make the trip safer, so bring your own seat where you can. See can my baby travel in a taxi without a car seat.

Second-hand seats and expiry dates

Ontario tells parents to check that any seat has the National Safety Mark, an expiry or useful-life date that has not passed, all its parts and instructions, and no wear, torn straps, stress marks or cracks, and that it has never been in a collision. Alberta goes further and advises avoiding used seats altogether. Check for recalls through Transport Canada before using any seat. More in are second-hand car seats safe.

Where to get help

Your provincial government publishes the law that applies to you, and the federal regulations are on the Justice Laws Website. Transport Canada lists car seat recalls. For older children, toddler car seat stages covers what comes after the infant seat.

Frequently asked questions

What are the car seat rules in Ontario?

Ontario requires a rear-facing seat up to 9kg, a forward-facing seat from 9 to 18kg, and a booster for children under 8 who weigh 18 to 36kg and are under 145cm. A child can use a seatbelt alone at 8, 36kg or 145cm. The fine is $240 plus two demerit points.

Can I use a car seat bought in the US in Canada?

Check for the National Safety Mark first. Ontario says the mark shows a seat complies with Canadian standards and is legal for use in Canada, and British Columbia's law requires seats meeting the Canadian standards. A seat without the mark fails both tests, however good it was in the US.

When can a child stop using a booster seat in Canada?

It depends on the province. Ontario allows a seatbelt alone at 8 years, 36kg or 145cm. British Columbia requires a booster until 145cm or age 9. Alberta has no booster law. Safety guidance is the same everywhere: keep the booster until the belt fits, typically at 145cm.

Do you need a car seat in a taxi in Canada?

Ontario and British Columbia both exempt taxi drivers from the child seat rules, with exceptions. BC's exemption does not cover vehicles operating only as ride-hailing, and Ontario's list names taxicabs rather than rideshare. Being exempt does not make the trip safer, so bring your own seat if you can.