Converting a standard invoice to an Export Invoice automatically deducts any calculated VAT set on the Hammer or Buyer's Premium to 0%, changes the indicated VAT rate to 0.0% and recalculates the totals accordingly. You should follow the Import and Export guidelines for your region to understand the circumstances on when this allowed.
On clicking Edit for an individual invoice, an Options box appears at the bottom of the page. On selecting the [Export Invoice] checkbox and clicking [Save] the invoice is converted to an Export Invoice.
The document title is changed to Export Invoice and all VAT is updated to 0%.