Within Teamwork, you can view your monthly or annual invoices from the site settings.
Note: Only a site owner or site administrator in the owner company can access the site settings and subscription information.
Click your profile avatar in the bottom left of your site and select Subscription from the pop-out menu.
In the Subscription area, you will see an Invoices section below your plan summary detailing a list of any previous invoices for your account.
Note: If you choose to pay via PayPal you will not receive an invoice to view in this area. Invoices for payments through PayPal can be viewed with them directly.
For each payment entry in the list, you can click the options button (three dots) on the right to export the invoice to PDF.
For more information, see: Changing the Email Address for Your Subscription Invoices