Tax determination is modeled as: Customer Country → Customer Type → Service Type → Tax Classification → GST/HST Rate. Production rules should be maintained as data, not hard-coded page-by-page.
* Prototype only. The purpose of this admin page is to let your accountant confirm each rule and let the developer update the engine without rebuilding checkout pages.
Country, province/state, legal name, business/individual, billing address.
SKU, service type, price, currency, tax classification.
Invoice address, business status, tax ID if applicable, payment record and rule used.
