Stepchildren inherit nothing automatically
Ontario's intestacy and default inheritance rules treat "children" as biological or legally adopted children. A stepchild who was never adopted has no automatic claim on a stepparent's estate, however long the relationship lasted or however involved the stepparent was in raising them.
If you want a stepchild to share in your estate, the will has to name them specifically. Silence isn't a neutral choice here; it's effectively a decision to leave them out.
A second spouse's election can reopen the numbers
A married spouse can choose, instead of accepting what a will provides, to receive an equalization payment under the Family Law Act, calculated as though the marriage had ended in separation the day before death rather than by it. That election can produce a very different result than the will intended, particularly where one spouse brought most of the property into a second marriage.
A marriage contract, properly negotiated with independent legal advice for both spouses, is one of the few ways to limit that election in advance.
Dependant support doesn't disappear because of a will
Under Part V of the Succession Law Reform Act, a child, spouse, or other dependant the deceased was actually supporting can apply to court for adequate provision if the will, or an intestacy, doesn't provide it, regardless of what the document says. A blended family often has more people who qualify as dependants than a first marriage with no children from before, so this risk is worth planning around rather than discovering later.
Structures that separate a spouse's needs from children's inheritance
- A life interest or trust giving a spouse income or the right to live in a home, with the property passing to children from an earlier relationship afterward
- Life insurance naming children from a first relationship directly, funded outside the will and outside probate
- Specific gifts listed by name rather than a general split that assumes everyone reads it the same way
- Updated beneficiary designations that match the will's intentions, since a designation controls over a will's general terms for that asset
Naming an executor who won't take sides
An executor who is also a major beneficiary from one side of the family can create the appearance, or the reality, of favouring that side when discretion is involved. A neutral executor, or co-executors representing both sides with a mechanism for resolving disagreement, reduces that risk. Explaining your reasoning to both the spouse and the children, while you can still do it yourself, prevents a lot of the guesswork that turns into disputes.
We can help you weigh a life interest, a trust or specific gifts against each other, so the structure you choose actually protects everyone you intend it to.
Your steps
Who's involved
Can elect equalization under the Family Law Act instead of accepting the will, or claim dependant support if left with too little.
Inherit only what the will specifically gives them; no automatic share unless named.
Anyone the deceased was actually supporting can ask a court for adequate provision, regardless of the will's terms.
Structures trusts, life interests and beneficiary designations to reflect a blended family's actual priorities.
Documents you will need
Tools for this stage
Five questions about your current will, your family and what you own. The result tells you whether to start, update, or simply keep watching for the next trigger. It is a starting point, not legal advice on your situation.
Checklist builderWhat do I need before I make a will?Answer five questions about your family, home, business and beliefs, and get a document-and-decision list sorted to what actually applies to you. It is a starting point, not a complete list for every family.
Guides to download
Questions people ask
Do stepchildren inherit if I die without a will?
No. Ontario's intestacy rules pass property to a spouse and biological or legally adopted children. A stepchild who was never adopted has no automatic share, whether or not a will exists.
Can my second spouse claim more than my will gives them?
Yes, by electing equalization under the Family Law Act instead of accepting the will, which can produce a different, sometimes larger, result depending on what each spouse owned.
Can a marriage contract stop that election?
It can limit or waive it if properly negotiated and signed, generally with independent legal advice for both spouses, but it can't override a dependant support claim by a child the deceased was supporting.
What if I want to treat my children and stepchildren equally?
Name each person specifically and state the share intended; equal treatment has to be written into the will, since default rules don't extend to a stepchild automatically.
Can my ex-spouse's children from a prior relationship claim against my estate?
Only if you were actually supporting them as dependants, or they're your biological or adopted children. Being your former spouse's child alone doesn't create a claim against your estate.
Also in this centre
Read more
Related centres
Other Learning Centres for the same transaction.
Sources
- Succession Law Reform Act, Part V (Dependants' Relief)
- Family Law Act
- Ontario Superior Court of Justice: Estates
General information about Ontario law as of 5 September 2026, not legal advice. It does not create a lawyer–client relationship.
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