Every time a payment is made, you will be emailed an electronic receipt of the transaction. Additionally, you can find your payment history by going to Billing Settings and selecting invoices. You will see a list of past payments and can click on any of them to download a PDF invoice of the payment.
Some accounts may have older payments that were processed on our legacy subscription manager. For payments processed prior to October 2016, you can go to your Account Portal and then click on Personal Details & Notification Preferences. At the bottom of that page you can find your older invoices.