What Makes a Will Legally Valid in Alberta?

Validity is where good intentions either hold up or fall apart. In Alberta, the Wills and Succession Act sets the requirements — and it offers two routes: a formal witnessed will, or a handwritten holograph will.

The Alberta validity checklist

For a formal will:

1. It's in writing.
2. You sign it at the end.
3. Two witnesses, present at the same time, watch you sign and then sign themselves.
4. You're at least 18 and have testamentary capacity.

For a holograph will: it must be wholly in your own handwriting and signed — no witnesses needed.

The witness rule that costs gifts

Witnesses must be capable adults who don't benefit under the will (and aren't married to someone who does). If a beneficiary witnesses, Alberta law generally voids that person's gift while leaving the rest of the will intact. Use disinterested witnesses every time.

Capacity and undue influence

You must understand your assets, the people who might expect to inherit, and what the will accomplishes. If capacity is doubtful — say, advancing dementia — the will can be challenged, which is why lawyers document capacity and meet clients privately.

Alberta's curative power

Like B.C., Alberta gives its courts authority to validate a document that doesn't tick every formal box if the court is satisfied it sets out the deceased's testamentary intentions. It's a safety net, not a strategy — using it means a court application and added cost.

Mistakes that cause problems

• A beneficiary (or their spouse) witnessing the will.
• Not signing at the end.
• Witnesses signing separately rather than together.
• A holograph will that's partly typed — it must be entirely handwritten to qualify as one.
• No alternate executor or residue clause.
• A misplaced original; probate generally needs it.

Frequently asked questions

Who can witness a will in Alberta? Any capable adult who isn't a beneficiary or the spouse of one. Can a beneficiary witness a will in Alberta? They can, but their gift is generally voided — so don't allow it. How many witnesses does a will need in Alberta? Two, present together — unless it's a fully handwritten holograph will, which needs none. Does a will have to be notarized to be valid in Alberta? No; notarization is not a validity requirement.

Not legal advice. General information about Alberta law as of 2026. Confirm specifics with an Alberta estate lawyer.