At the moment of invoicing, AWS determines the location of each individual account, based on certain information, including your TRN, your Billing address and your Contact address. The result of AWS’ determination is shown as the “Tax Address” on the Tax Settings page of each account.
If you have a consolidated billing family, please note that each account is assessed individually: linked accounts do not inherit the Tax Address or the TRN of the payer account.
The payer account can view the Tax Address of all their linked accounts on their own Tax Settings page of each account.
For more information please see Tax Help- Location.