Comment 1 for bug 1192629

Thanks for reporting.

I have included in the module a spreadsheet about the tax replacement based on your sources and after discussing with our accountant (also fiscalist) and his friend working at Revenu Québec:
http://bazaar.launchpad.net/~openerp-canada/openobject-addons/7.0-fix-1192629/download/head:/taxes.csv-20130620193717-zaqnis10ndufmb8r-2/Taxes.csv

When considering taxes to be applied, it is the province where the delivery occurs that matters. Therefore we decided to implement the general case in the fiscal positions: delivery is the responsibility of the supplier and done at the customer location.

If delivery is the responsibility of the customer and done at the supplier location, the user will have to change the tax accordingly.

This is what I implemented in the branch related to this bug.

Please check the spreadsheet and comment.