My status: My home country is Poland, where I had no income in 2018 whatsoever.
I lived and worked in the Netherlands for 7 full months in 2018. In August I moved to DE (5 mths 2018).
Is it possible to ask german tax advisor to fill out & send the declaration both for NL and DE so that I don't need to look for someone in NL to do it?
Of course I'd like to avoid double taxation etc.