Income tax: residence, not registration
You are a Polish tax resident if your centre of personal or economic interests is in Poland, or if you spend more than 183 days here in a tax year. Registering a business does not decide it on its own.
If you are resident in another country, the double taxation treaty between that country and Poland decides what Poland may tax. Income from a Polish sole proprietorship is normally taxable in Poland in any case — but your home country still needs to know about it, and the mechanism for avoiding double taxation differs from treaty to treaty.
Tell us where you genuinely spend the year before we help you choose a taxation form. It changes the answer.
Thirty months of relief, then the full rate
Contributions are a flat monthly amount, not a percentage of what you earn — so they hurt most in a bad month. New businesses get a long run-up, and the end of it is the thing to plan for.
Relief for a start
No social contributions at all. You still pay the health contribution. Optional — you may skip it and start paying from day one to build entitlement.
Preferential contributions
Social contributions calculated on a reduced base of 30% of the minimum wage.
Full contributions
2 359.30 PLN a month in 2026 on the tax scale or flat tax, minimum health contribution included (on the lump-sum tax the health part depends on revenue). This is the step that catches people out — it arrives at a fixed date, not when the business can afford it.
Small ZUS Plus
An income-linked base available after the preferential period, if your revenue stays under the statutory limit.