7 Reasons to Add a Tax Engine for VAT Determination Aug 3, 2020 - Finance The tax function in today’s multinational businesses must accommodate nearly constant changes that affect tax determination. The manual process of tax research and updating each transactional finance system can be a significant cause of VAT error, and a … This content is only for paying members. Are you a member yet?. Click here to login. Do you want to become a member?. Click here to register.