> That pushes the tax collection liability on the driver (who can't collect taxes, since payment is through Uber app) and the limit for that is 30k$ so a lot of drivers should probably have charged taxes since they may have earned more.

Sounds like Uber needs to update their app.

> I wonder if we'll see provinces going after the drivers for back taxes.

I'm sure Uber will do the responsible thing, stand by its drivers, and make them whole in the case that they are billed for back-taxes.