@swojnicz you cannot collect HST/GST(Canadian) taxes through US based subsidiary generally. These taxes are part of non US nexuses. Netsuite does allow non native tax nexuses to be added to subsidiary record but not sure about what will be the final GL impact and tax remittance issues. First create the specific province based nexsus then create Tax Schedules, tax code and Tax groups accordingly . Note that tax is determined by the tax schedule attached to the item and customer's billing location. You may have to do some test and trials before figuring out the process. FYI technically/legally US companies cannot collect GST/HST from Canadian customers same goes for Canadian companies - they cannot collect HST/GST from US customers either.