We have developed a TAX or VAT Module for InfixLMS that works for all courses when anyone purchases the course that time is added to the billing. You could set up as per your requirement %20 from the system setting. The module’s price is only $65, please email support@spondonit.com for purchase. We only support PayPal and Payoneer Payment. One license can be used only for one InfixLMS. Purchase the InfoxLMS from here.