Babysitting rules in Ontario: ages, ratios, and what the law actually says
If you have ever searched “how old does a babysitter have to be in Ontario” or “how many kids can a babysitter watch,”you have probably found a muddle of American articles, outdated forum threads, and confident answers that contradict each other. The Ontario rules are actually fairly clear once you separate two different laws that people tend to blend together. Here is what each one says, in plain language.
A note before we start: this is general information, not legal advice. The laws referenced are the Child, Youth and Family Services Act, 2017 (CYFSA) and the Child Care and Early Years Act, 2014 (CCEYA), and we link to the government sources at the end so you can read them directly.
Is there a legal minimum age to babysit in Ontario?
Quick answer: There is no legal minimum age to babysit in Ontario. Parents are responsible for deciding whether a babysitter is mature enough to provide safe supervision.
No. Ontario law does not set a minimum age for babysitting. There is no statute that says a babysitter must be 12, or 14, or any particular age.
What exists instead is guidance. The Children’s Aid Society of Halton, for example, notes that no age is specified by law for babysitting, and that it is a matter of the parent determining whether a young person is responsible enough to provide a safe environment. Their practical guidance for young sitters around 12 or 13 includes limits worth knowing: no more than two children in their care, no responsibility for cooking, supervising swimming, or bathing children, a parent or responsible adult reachable within five minutes, and shorter daytime sits rather than late or long ones.
In other words, the law leaves the judgment to parents. Which means the real question is not “is this legal” but “is this person genuinely capable of keeping my children safe for these hours?”
How old does a child have to be to stay home alone?
This is a different law than babysitting age, and it is the one that does set expectations. Under section 136 of the CYFSA, a person in charge of a child under 16 cannot leave that child without making provision for supervision and care that is reasonable in the circumstances.
The Act does not name a bright-line age at which a child can be left alone. In practice, children’s aid societies across Ontario interpret it conservatively for young children: children under 10 should not be left without supervision, and for children between 10 and 16, what counts as reasonable depends on the child’s maturity, the length of time, the time of day, and the arrangements in place.
The connection to babysitting is simple: hiring a sitter is one way a parent makes reasonable provision for supervision. The law places responsibility on the parent to make those arrangements, which is why choosing the right sitter is more than a practical decision.
How many children can a babysitter care for?
This is the question with the most confused answers online, and the confusion comes from one distinction almost nobody explains: it depends on whose home the care happens in.
In your home: when a babysitter or nanny is hired directly by a family and cares for that family’s children in the children’s own home, the CCEYA’s licensing rules do not apply. This arrangement is explicitly exempt under the Act. There is no statutory cap on the number of your own children a sitter can care for in your home. The limit is judgment: a capable adult can manage three siblings through a bedtime routine, and a young teenager cannot, and the law leaves that call to you.
In the sitter’s home: the moment care happens at the caregiver’s own premises, different rules apply. An unlicensed home child care provider in Ontario can care for a maximum of five children under the age of 13, and that count includes the provider’s own children under the age of 4. No more than three of the children can be under 2. The provider can operate in only one location and must tell parents in writing that the program is not licensed by the Government of Ontario. Care for more than five children requires a licence.
So when you read “a babysitter can only watch five kids in Ontario,” that is the home child care rule being applied to the wrong situation. A sitter coming to your home to care for your children is not running a home daycare and is not governed by that cap.
When does babysitting become licensed child care?
The short version: babysitting in the family’s home, hired directly by the parents, stays outside the licensing system entirely. Regular care at the caregiver’s premises is unlicensed home child care, subject to the limits above. Care for more than five children under 13, or operating across multiple locations, requires a licence from the Ministry of Education. Care provided by a relative of all the children is also exempt.
For most families booking an evening or a school-day sitter, none of the licensing framework applies. What applies is the CYFSA’s broader expectation: the arrangement you make for your children’s supervision must be reasonable.
What this means when you are choosing a sitter
Because the law sets so few hard lines, the standard is effectively the one you set. A reasonable arrangement is one where the sitter’s age, experience, and training match the demands of the booking: the number of children, their ages, the hours, and anything specific to your family, from an infant to a pool in the backyard.
That is why the practical markers matter more than any statute: real childcare experience, references that check out, current First Aid and CPR certification, and, for adult sitters, a Vulnerable Sector Police Check, which is the enhanced criminal record check designed for people who work with children.
If you’re interested in what that vetting process should look like in practice, we’ve written a more detailed guide here:
our guide to finding a sitter you trust
Where tend sits in all of this
tend operates in the exempt category described above: sitters care for your children in your own home, booked directly by you. The law does not require sitters to be adults, but tend does.
Every sitter on tend is over 18 and has completed:
Identity verification
A Vulnerable Sector Police Check issued within the last two years
First Aid and CPR certification
Reference checks
A personal conversation with our team
before their first booking.
None of that is legally required for babysitting in Ontario.
The law sets a floor. tend sets a standard.
You can learn more about our screening process here:
Or, if you’re ready to browse available sitters and learn how booking works, visit:
Sources
Government of Ontario, Rules for child care providers in Ontario; Child Care and Early Years Act, 2014, section 4 and O. Reg. 137/15, section 3 (exemptions); Child, Youth and Family Services Act, 2017, section 136; Children’s Aid Society of Halton, Guidelines for Leaving Your Child Alone or Babysitting.
This article is general information about Ontario law as of July 2026 and is not legal advice.