Hello there, Mee1977.
The TAX and the VAT columns are the same thing. This is where you enter your sales tax.
Please follow the steps I provided on my first reply on this thread.
Here's also the article on how to set up the sales tax (which was provided on the earlier reply): Set Up and Edit VAT Settings, VAT Codes and VAT Rates.
I'll be right here if you need anything else.
