What the EU Blue Card is
The EU Blue Card is a combined work and residence permit for non-EU nationals in highly qualified jobs, set by Directive (EU) 2021/1883. It applies in 25 member states; Denmark, Ireland are not bound by it and run national schemes instead. Member states had to transpose the recast Directive by 18 November 2023.
Each country fixes its own salary threshold between 1 and 1.6 times its average gross annual salary. That is why the same job pays enough in one capital and falls short in another: Luxembourg asks €65,652/year, Latvia €24,720/year (the EU portal figure as of 1 April 2025).
Nationality does not change the test. A US or Indian citizen is assessed on the same salary, contract and qualification conditions as any other non-EU national.