I moved in 2009 from The Netherlands to Luxembourg. When I lived in The Netherlands, I had a salary there, and now I live in Luxembourg, I have a salary in Luxembourg.
Does anybody know whether I also have to declare the income from the Netherlands in the 'Déclaration d'impôt'?
If yes, I would expect that I can indicate somewhere in the form that I paid already tax over the salary from The Netherlands. How do I prevent having to pay tax twice over my salary from The Netherlands? (There exists a treaty against double taxation between the Netherlands and Luxembourg.)
Answers in either English or German are welcome. Thanks in advance for any answers!