- Certain fiscal rules will be in force in Portugal from 2024
- Monthly SAF-T must be due by the 5th day of the month
- PDF invoices must include a qualified electronic signature from January 1, 2024
- Form 2024 PDF invoices without electronic signatures will not be valid
Source: fiscal-requirements.com
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.