What it is
When an Ontario document is used in another country, the receiving authority usually needs proof that the signature and seal are genuine. Since Canada joined the Hague Apostille Convention (in force January 11, 2024), many documents now take a single apostille certificate instead of the older multi-step consular legalization.
The usual steps
First the document is notarized. It is then authenticated or apostilled by the competent authority — Ontario’s Official Document Services or Global Affairs Canada. If the destination country is not a Hague member, an extra legalization step at that country’s consulate may still be required.
Good to know
A notary cannot issue the apostille itself — that is done by the designated government authority. Requirements vary by country and institution, so confirm exactly what the receiving party needs before you start.