Tax and contribution calculators help calculate your tax liabilities, health insurance for sole traders and compare tax forms — general rules, flat tax or lump-sum.
Straight-line fixed-asset depreciation
Tax-deductible costs (KUP)
PCC — contracts, loans, sales
Linear 19% tax for sole proprietors
Lump‑sum on revenue — quick simulation
Health contribution 4.9% and 9% — sole proprietorship
VAT net-gross and gross-net conversion
Answers to the most common questions about calculators in the topic Taxes and contributions.
Depends on income and costs. General scale — good for low incomes (12% up to PLN 120,000). Flat tax (19%) — better for high incomes with significant costs. Lump-sum — attractive with low costs. The calculator compares all options.
Depends on tax form: general rules — 9% of income; flat tax — 4.9% of income (min. PLN 314.10); lump-sum — a fixed amount based on one of 3 revenue tiers. The calculator shows the exact figure.
Output VAT minus input VAT (from cost invoices) = VAT payable. The VAT calculator computes the net, gross or tax amount at the selected rate (23%, 8%, 5% or 0%).
Lump-sum is advantageous when business costs are low (below 20-30% of revenue). The higher the costs, the more flat tax or general scale makes sense. The calculator compares both options.
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