Hi sam-quinn Thanks for reaching out to us here on the Community. The VAT column/heading on a purchase order emanates from the default invoice template. To remove the column/heading select the gear/cog icon on the main page of your account > Custom form styles > select edit to the right of the systems default invoice (not the template that you may have created and made the default) > content > select the middle greyed out area > untick VAT > Done.
