You have the option to either display or hide your VAT amounts on your invoices so that customers can view them or not.
1. Click on Settings Module > General Settings > Invoicing tab.
You will see setting categories: Closing Invoices, Caching, Layout, Numbering, Invoice Table Columns, Guest names, Header, and Footer.
2. Search for the Invoice Table Columns and select which lines would like to display on the invoices
Here is an invoice with the VAT "Displayed":
Here is an invoice with the VAT "Hidden":