VAT

I'm in the US. I assume VAT is tax but don't really know. It's confusing to my customers. Is there a way to change that verbage storewide or do I need to go into each PHP file for emails and templates and the like. Please let me know how to update this verbage. Thank You.

Like any text in HikaShop, you can change it via a translation override:
www.hikashop.com/en/download/languages.html#modify