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.
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In the Settings area, select the Subscription tab in the left sidebar.
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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