Payments account
A payments account is a subset of your 12-digit payments profile, which organizes the current settings being applied to your Google Ads billing activity. A payments profile can manage multiple payments accounts, and each payments account has a unique ID with 16 digits in the format of XXXX-XXXX-XXXX-XXXX.
For customers on the monthly invoicing setting, you will also often see this referred to as "billing setup," or "invoice setup" (or formerly “billing account”).