D7 visa holders previously benefited from the Non-Habitual Resident (NHR) tax regime, but this regime is ending.D8 visa holders might qualify for the NHR or the new Fiscal Incentive for Scientific Research and Innovation (IFICI) Program, depending on current regulations.Both visa holders need a Portuguese bank account and a Portuguese tax identification number to manage taxes and financial affairs.Digital nomads on the D8 visa should be aware of their average monthly income and meet residency requirements to be recognized as tax residents by Portuguese authorities.