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Adoption vs Guardianship vs Custody for Children in Ontario

Not sure whether to adopt, seek custody or become a guardian? Compare the Ontario routes, what each order does, and what to ask before you choose.

Family Law4 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Adoption is a permanent court order that makes the adopter the child's legal parent.
  • Non-parents can ask the court for a parenting order on decision-making responsibility or a contact order, which is a different legal step from adoption.
  • Once a legal custody order is made in a society setting, the child is no longer in society care.
  • Words like guardianship and custody are used loosely, so focus on what the specific order allows.

If you are caring for a child who is not your own, you may hear three words: adoption, guardianship and custody. The words are often used loosely, so it helps to look at what each order actually allows.

This article lays out the practical differences in Ontario using the options the province describes. Terms such as guardianship can mean different things depending on the context, so it is worth asking a lawyer which order fits your situation.

Start with what you actually need

Before choosing a label, ask what problem you are trying to solve. Some caregivers need the ability to consent to medical care or enrol a child in school. Others want to become the child's permanent parent. Others simply want to keep a relationship with a child.

Ontario describes several kinship options: a kinship service, kinship care (a form of foster care), legal custody, adoption, or customary care for First Nations, Inuit and Métis children. Each has different consequences for the child's legal status and for any society involvement.

Adoption

Adoption is a permanent court order. The adoption order makes the adopter the child's legal parent. Adopters can be a couple or a single person, and must be Ontario residents if adopting publicly.

There are several routes. Public adoption goes through a children's aid society and is for children in extended society care. Private domestic adoption involves a licensee and a ministry-approved plan. International adoption involves a licensee and ministry approval before you leave Ontario. Relatives living in Ontario can apply directly to the court.

Custody, guardianship and parenting orders

For non-parents, the confirmed court route is a parenting order. Non-parents such as grandparents can apply for a parenting order on decision-making responsibility or a contact order. Decision-making responsibility covers significant decisions about health, education and religion. The court must make an order in the child's best interests and consider family violence and current living arrangements.

Non-parents file Form 8, Form 35.1 (Parts A and B), a Children's Aid Society Report on Records and a police record check, plus Form 35.1A if relevant. A parenting order is enforceable, while a parenting plan is usually informal unless part of a separation agreement or court order.

In the society setting, once a legal custody order is made, the child is no longer in society care. How guardianship fits with these orders can depend on the type of guardianship and the facts, so ask a lawyer rather than assuming.

RouteKey effectCourt order?
AdoptionAdopter becomes the legal parentYes, permanent
Parenting order (decision-making)Significant decisions about health, education and religionYes, and enforceable
Contact orderTime the child spends in your careYes, the time is set out in the order
Informal parenting planUsually informalOnly if part of an agreement or order

Comparing time, cost and support

Costs and supports for a parenting order, or for a non-society kinship arrangement, depend on your circumstances, so confirm them before deciding.

What to do next

Frequently asked questions

Is guardianship the same as adoption?

No. Adoption is a permanent court order that makes the adopter the child's legal parent. The word guardianship is used in different ways, so ask a lawyer what a specific order would actually allow.

Can a grandparent get decision-making authority without adopting?

Non-parents such as grandparents can apply for a parenting order on decision-making responsibility, which covers significant decisions about health, education and religion. The court decides based on the child's best interests.

Does a custody order end a society's involvement?

Ontario describes that once a legal custody order is made, the child is no longer in society care. How that works in your case depends on the facts.

Which option costs the least?

There is no cost to adopt through a children's aid society, while private domestic adoption licensee fees are generally $15,000 to $30,000 plus other fees. Court-based options for non-parents involve their own costs, which a lawyer can estimate.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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