Ambiguous Wording in a Canadian Will — Real Examples and Lessons

Picture a scenario estate litigators know well. A Vancouver widower writes his own will in 2014. The residue clause reads, "I leave the residue of my estate to my children in equal shares, per stirpes." He has three living children, plus a grown stepchild whom he raised from age six and refers to as his daughter in every other context. After he dies in 2023, the stepchild claims a quarter share; the three biological children say "children" means biological children only. The court works through two and a half years of interpretation arguments — affidavits about how the deceased described his family, what "stirpes" means when applied to step-relationships, what evidence is admissible under BC's rectification provisions. The final allocation costs the estate roughly $180,000 in legal fees. The result turns on the meaning of one word that was never defined.

That pattern — a single ambiguous word generating years of litigation — is one of the most common causes of Canadian will disputes that hit court. The cases that get the headlines involve forgery or undue influence, but a large share of the cases that fill the dockets are about wording.

How Canadian courts read a will #

The starting point in every common-law province is the armchair principle. The court interprets the will as if it were sitting in the testator's chair at the moment of signing, with knowledge of the testator's family, assets, and circumstances at that moment. It does not consider events that happened after signing, and it does not consider what the testator might have wanted if they had thought about a scenario they did not actually contemplate.

If the will is unambiguous on its face, the court applies it as written, even if the outcome feels unfair. If the will is ambiguous — capable of more than one reasonable reading — the court can look at extrinsic evidence: the lawyer's notes, prior drafts, the testator's correspondence, statements made to family members. There is a distinction between patent ambiguity (visible from the will text alone) and latent ambiguity (revealed only when the will is applied to facts), and the admissible evidence differs slightly between the two.

Several provinces have layered statutory fix-it powers on top of the common-law interpretation rules, though the powers differ in kind. British Columbia's WESA (in force 2014) has both: section 58 lets a court give effect to a document that fails the execution formalities, and section 59 lets it rectify a will's wording where there is clear evidence of a drafting error.^[2] Alberta's Wills and Succession Act has carried similar curative and rectification powers since 2012.^[3] Ontario's addition — section 21.1 of the SLRA, in force January 1, 2022 — is a validating power for documents that record the deceased's testamentary intentions but miss the formalities; correcting the wording of a properly executed Ontario will remains a narrower, largely common-law exercise.^[1] None of these is a licence to rewrite — courts apply them cautiously — but together they materially expand what can be fixed after death.

The recurring ambiguity traps #

Pattern recognition matters here because the same handful of mistakes appear across hundreds of contested Canadian estates.

Trap one — "children" without definition. Does it mean biological children only? Adopted children too? Step-children who were raised in the household? Children born out of wedlock and acknowledged later? Provincial statutes generally include adopted children automatically; step-children, almost never. Drafting that says "my children Alice, Brendan, and Cara" — naming them explicitly — eliminates the entire category of dispute.

Trap two — "issue" or "descendants" without per stirpes / per capita specification. A gift "to my issue" without further qualification can be distributed two very different ways. Per stirpes divides into family branches (each child's share, with the share passing down if the child has predeceased); per capita divides equally among all living descendants at the date of distribution. The two methods produce very different outcomes when grandchildren are involved.

Trap three — joint accounts or jointly-held property. Saying "I leave the house to my daughter" when the house is held in joint tenancy with the surviving spouse creates an immediate conflict — joint property transfers by survivorship outside the will, so the will's gift fails. The clause appears to give the daughter the house, but the daughter receives nothing.

Trap four — vague specific gifts. "My jewellery to my niece" — which niece, if there are three? "My antique clock" — which antique clock, if the testator owned five? "My investment account" — which investment account, of the seven the testator held? Identification by description without enumeration generally creates a fight.

Trap five — conditional gifts with no fallback. "To my son John, provided he is then living and married to his current wife" — without saying what happens if either condition fails. Where does the gift go if John has divorced? If he has died? The lack of a gift-over clause leaves the gift in limbo, often pushed into the residue by default, but sometimes voided entirely.

Trap six — percentages that do not add to 100. A residue clause leaving 30% to one child, 30% to another, and 30% to a third leaves 10% unaccounted for. Unless the court can find an intention in the will to divide the entire residue among the named beneficiaries, the unallocated share risks passing on a partial intestacy — distributed under provincial intestacy rules the testator never chose.

Trap seven — gift to "the spouse" after divorce or separation. "I leave my estate to my spouse" — without naming the spouse. If the testator has remarried by the date of death, the new spouse may inherit even if the will was drafted with a now-ex-spouse in mind. Naming the spouse explicitly (Mary Anne Doe, of 123 Maple St) prevents the substitution.

The "to my dear friend X" failure #

A particularly painful category: gifts to people whose only identification in the will is a nickname or shorthand. "$10,000 to my dear friend Bobby" — when the testator has three friends named Bobby and the will offers no further detail. If the executor cannot identify the intended Bobby with reasonable certainty from extrinsic evidence, the gift can fail for uncertainty and fall into the residue.

This is one of the failure modes the rectification statutes have made marginally more recoverable in recent years, but only where the extrinsic evidence is strong (the lawyer's notes, a contemporaneous letter, a clear pattern of correspondence with one specific Bobby). Strong evidence is the exception, not the rule.

The "in equal shares to my surviving children" trap #

A common phrasing: "I leave the residue to my children, in equal shares per stirpes." There are several latent ambiguities here, depending on whether a child has predeceased and that child has children.

Read one way: each living child receives an equal share, and a predeceased child's share goes to that child's children by branch. Read another way: the gift is to children only, and a predeceased child's share lapses unless an anti-lapse statute saves it.

Different Canadian provinces resolve the default differently. Naming the contingency explicitly — "if any child of mine has predeceased me leaving children of their own, that deceased child's share shall be distributed to such children in equal shares per stirpes" — costs an extra sentence and prevents the entire fight.

Drafting habits that prevent ambiguity #

Some practical rules of thumb that close most of the common gaps:

Name every beneficiary by full legal name, current address (or city), and relationship at the time of signing. "My son John Smith of Vancouver, BC" is precise; "my son John" is not, if the testator has had stepsons named John or if a grandson has the same first name.

State every contingency. For every gift, write down what happens if the beneficiary predeceases, refuses the gift, cannot be located, or is otherwise unable to take.

Avoid pronouns without clear antecedents. "He shall receive..." three paragraphs after the last named "he" is an invitation to argument.

Read the residue clause out loud, checking that the percentages add to 100% and that every described scenario routes the residue somewhere.

Date and sign the will properly, with two witnesses (as discussed in how to sign a will in Canada). The cleanest interpretation rule in the world cannot save a will that fails on execution.

When ambiguity reaches court — what to expect #

If a Canadian estate ends up in interpretation litigation, the typical path is:

The estate trustee (executor) files an application for directions, asking the court to interpret a specific clause. All interested parties (beneficiaries, potential beneficiaries, sometimes the Public Guardian and Trustee for minors) are served. Affidavits go in describing surrounding circumstances. The court hears argument and issues a ruling on the interpretation.

Costs are normally awarded out of the estate where the ambiguity is genuinely the testator's fault — meaning the legal fees of all sides are paid from the estate before distribution. This is one reason ambiguity disputes are so expensive: the estate funds both the fight and the lawyers on every side of it. A six-figure cost run is not unusual on a $1M estate with a genuinely contested ambiguous clause.

What we focus on at It's Simple Will #

The drafting flow at It's Simple Will forces explicit naming of beneficiaries, explicit contingencies for every gift, and automatic percentage validation on the residue clause. The result is a will that closes the common ambiguity traps before they have a chance to open.

For the underlying structural rules, see our pillar on how to write a will in Canada. For the related drafting issues, see our articles on per stirpes vs per capita, residuary clauses, and substantial compliance — when courts save a botched will.