Using L3-L5 SWEs as a reference point, the typical difference between Toronto (Canada) and New York (US) for the same level and role was around 30%+ less if a person was based out of the Canada office.

There are/were a non-trivial number of Canadian Googlers that made New York their official office but were unofficially trying to live/work out of Toronto to take advantage of the compensation difference as well as trying to dodge the difference in income tax rates.