View billing history and invoices

From Adobe Portfolio

1. Once logged in into your Portfolio account, click on "Settings" in the left-hand toolbar
2. Click over to Your Account
3. Click Manage your account
4. This will take you to https://accounts.adobe.com where you will be able to find your billing history under "Plans and Products" -> "Manage Plan" -> "Billing History".

Adobe Accounts

1. Visit https://accounts.adobe.com 
2. Click into Invoice and billing history under you plan