Kalkulator Podatkowy JDG

Kalkulator Podatkowy JDG helps Polish entrepreneurs and freelancers compare the three forms of income tax available to a sole proprietorship (JDG). Enter your revenue and costs, choose your social security (ZUS) contributions, and the calculator works out every tax and contribution — so you can see which form leaves you with the most.

• Three tax forms side by side — the tax scale (12% and 32%), the flat tax (19%) and the lump-sum tax on recorded revenue (2% to 17%).
• ZUS your way — full, reduced or health contribution only, including the contribution holiday.
• Yearly or monthly results, in a simple or a detailed view.
• 2025 rules — with a forecast for 2026 (an estimate).

The app is in Polish. Results are estimates, not tax advice.