I need a tax invoice

A copy of every invoice generated against your account is available online.  Proceed as follows to obtain a copy:

1:
Once logged in to http://online.primecharts.com , click on the Invoices tab.

2:
A list of invoices will be displayed.  Under the E-mail Copy column, tick the box next to the invoices you wish to have sent to you.  If you need to pay an invoice, just tick the box under the Pay column, as a copy of the invoice will be automatically sent to you once the payment is approved.

You may select a number of invoices.  Click Proceed (at the bottom of the page - you may need to scroll down if you have many invoices) and follow the prompts to confirm your selection.