Claiming tax refund after returning home country

Hi, I am a Vietnamese expat working in Poland for almost 2 years.
Is there anyone knowing what I should do before (and after) returning to my home country (in 3 months) in order to claim the tax contribution during my working time in Poland?

Thanks a lot!
Thuy.

I am afraid people on this site won't know. A lawyer will tell you.

RICHARD NICOLAS wrote:

I am afraid people on this site won't know. A lawyer will tell you.


Not really, why pay a lawyer?

You need to contact the tax office.

It may take much longer.
What kind of tax office will help you to pay less taxes?