Law / Setting up a sole trader business and becoming a resident in Poland - Procedure? [32]

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Sole trader - individual business activity in Poland by a non-EU citizen

Hi guys,

I have a temporary residence permit in Poland due to working in a company in Poland. I'm a non-EU citizen. Do I have right to open a sole trader activity in Poland? If I can open it, do I need to pay for ZUS if my employer already pays for it? Can I pay taxes and others without working with a attorney/accountant?

Thanks in advance