Law / Polish taxes for external incoming [9]

Hello everyone,

I am brazilian and I have been happily living in Poland and married with a polish for one year and a half. Currently, I am founder of a company in Brazil and I work through internet. All my income comes from the brazilian company, I don't have any business activity in Poland.

For the last months, me and my wife are actively searching how we should handle taxes. We have been to different taxes offices and each time we got different information, although it seems the consensus is: "if I do not have any income from Poland, I don't need to pay any taxes for my incoming from Brazil. However, at the moment I engage in business activities here, and receive money for them, I need to pay taxes for both Polish and Brazilian income".

I have found this forum by accident on the internet and reading previous posts I have found everyone to be very helpful, so I decided to ask: is there anyone else in the same situation as me (living in Poland and receiving only external income)? If so, how are you handling taxes? Any advice?

I have searched the forum and I haven't found an answer to those questions. If I missed something, sorry in advance.

Thanks for your attention!