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.