All account owners of paid subscriptions can check their payments and download their invoices in PDF format.
To see your invoices go to Admin - Subscription.
On this page you will see a Billing Info section which contains your credit card information, an Invoice info section with the details of your company and Proof of Payment, section with all your past invoices.
Click the download button, and you will be able to save a PDF copy of the invoice.
EDIT You can customize the invoice with your company’s info by filling in the Invoice info section.