Click the profile icon in the top right of your portal, and navigate to 'Billing and Payments'. Navigate to the 'Invoices' tab (or 'Balance & Invoices' if on a postpaid account). Choose the date range you want to view the invoices for or use the search bar to search for a specific invoice. You can also preview and download an invoice as PDF by clicking 'View' on the right, as well as pay outstanding invoices.

If you are currently using the old user portal:

In the Invoices section you can find all your generated invoices, download your copies, and pay any outstanding invoices.