Implement the Portuguese Tax Certification for a Business Unit

Summary:

We want to create a corporate structure with a parent company based in Luxembourg and a branch operating in Portugal. So, on the ERP, the Legal Entity will be a Luxembourg company, and it will have a Portuguese Business Unit. Both entities will have USD as functional currency.

How can we implement the required Portuguese Tax certification and compliance procedures for the Portuguese branch without affecting the operations or legal standing of the Luxembourg entity?

Content (please ensure you mask any confidential information):

On top of that, what ledger structure do you suggest, considering all reports to the Portuguese Tax Authorities should be done in EUR.