Do I need witnesses if I write a holograph will in Ontario?

No. A holograph will in Ontario does not require any witnesses. To qualify as a holograph will under Ontario's Succession Law Reform Act, the document must be entirely in the testator's own handwriting and signed by them. As long as those two conditions are met, no witnesses are needed and no notarization is required.

The absence of witnesses is both the convenience and the risk of a holograph will. There is no one present to attest that you appeared mentally capable when you signed, which can make it easier for someone to challenge the will later on capacity or undue influence grounds.

Other practical pitfalls: if even a single line is typed (for example, a printed template you filled in by hand), the document likely does not qualify as a holograph will. Dates and the testator's full name should appear in the handwriting as well, though Ontario does not strictly require a date for validity. If you have a complex estate or family situation, a holograph will may not be enough — speaking with a lawyer ensures your intentions are properly captured.