We now show the total amount per account in your invoice. Starting September 2019, we have added this section in Twilio invoices for customers with multiple accounts or projects on one invoice, also called linked accounts on one invoice. This new section is in public beta while we work on other changes to the invoice design.
To learn more about your invoice, please see Reading your Invoice.
Want to understand the difference between project/account and sub-accounts? See Twilio Projects and Subaccounts.