Hey guys,
For people who got their residence permit in Portugal, I would like to know whether NISS is a requirement at SEF. Does SEF require proof of Social Security (NISS) or is it just a personal choice?
And is NISS required for getting SNS (national health service)?
I am asking because it seems when you have NISS or social security, 21% of your income goes to social security tax. So I would like the know the case especially with foreigners using their active Non-Habitual Residence privilege.