Within Teamwork CRM, you can view your subscription invoices via your subscription settings.
Click your profile image in the top right corner of your site and choose Settings.
In the Settings area, select the Subscription tab in the left sidebar.
From the Invoices sub-section, you can view a list of all of your historical subscription invoices. This list will include the invoice date, number, subtotal, tax amount, and total cost.
Clicking an invoice date will open a PDF version of the invoice which you can then save or print.
For more information, see: Adding or Removing Users from Your Subscription