This is wonderful information for everyone. You are a spot on and many of these facts I can attest though that you need to make sure that you thought the i’s and cross the t’s now that things are getting a little tougher here was so many crossing over from war torn areas. Always make sure you have proper documentation and I would highly suggest that anything you bring from your home country let’s say United States have it professionally translated into Greek by the many translators, who are often attorneys, who do it on the side or no longer practice, but our legalized to do with seal, and all a conversion of English to Greek translation. It saves some time whenever you are applying for anything, whether it be dual citizenship or any kinds of visas that require documentation like birth certificates, marriage certificates etc. I think this is a wonderful site for people to share information and we all have different experiences and different purposes wanting to stay I will say and share one other perspective. I am retired in the US getting Social Security I am of Greek to send and spent many years living on and off between us and Greece . even though I still have a residence in the US, it is my primary country because that is where I pay my taxes Social Security in the US is not taxable income, of course because we’ve already paid for that during our years of working, but it does get included in my tax return as well any teach I do on the side or tutoring as I was a teacher for college and now often will pick up a student here and there remotely from the US and we do lessons online but my 1099 forms are generated in the US and included in my tax return . That is when you still have a primary country in Greece is secondary if you’re looking to stay long-term in Greece or to go between two countries whatever your circumstances are often your identification will show that your primary country is wherever it may be like mine is in the US , but I also will be receiving in a few months a Greek passport as a dual citizen. I know the US is one of the few countries that does allow dual citizenship. For anyone in the EU who wishes to reside in Greece I know from the attorney that has helped me a great deal you don’t have to go through as much. Transition is much easier if you are planning to , make grease your permanent residence or do the same just you have to show in any case wherever it is you pay taxes on income or other that is your primary residence now with that said if you have a tax ID and are able to purchase here like a car or a additional home or investment then you have to pay the taxes here as well and obtain and have the property tax identification provided by registering with tax ID using your ΑFM that is sort of Greece’s version of a Social Security number or identification number. but definitely just be sure that if you’re moving here and want to reside here permanently while receiving Social Security from another country get proper advisement so you don’t jeopardize either your US SS or any other country that you receive an income after you stop working. I think this is great information, I also think it’s great that others chime in if there is information that might be more current we sort of can help each other fact . I had to go through an attorney for my process because it was a bit complicated due to the 90 day rule and my developing Covid, which extended that and somewhat messed up my two year allowance of a visa at the same time I was in the process of putting in the paperwork to go through my fathers side, and gain the Greek dual, whatever your circumstance make sure you take the advisement of others, but do your own fact checking my Attorney mentioned that if I was born in an EU country, this process would be so much easier. Sometimes it’s not as hard as we think but you need to make sure it’s done correctly merry Christmas to all . S