Free tax and payroll calculators
Calculate your salary, compare tax forms and choose the best solution for your situation. Current rates for 2026.
Employment Contract Calculator
Calculate net salary from gross. Includes ZUS contributions, health insurance, PIT tax and tax-free amount.
Calculate salary →Tax Scale Calculator
Calculate income tax on general principles (progressive tax 12%/32%). For sole proprietorship.
Calculate tax →Flat Tax Calculator
Calculate income tax at the flat rate of 19%. Compare with other business tax forms.
Calculate tax →Lump-sum Tax Calculator
Calculate lump-sum tax considering all rates: 2%, 3%, 5.5%, 8.5%, 10%, 12%, 12.5%, 14%, 15%, 17%.
Calculate lump-sum tax →Employment to B2B Comparison
Compare net salary from employment contract with B2B income — tax scale, flat tax and lump-sum tax.
Compare forms →VAT Calculator
Convert net to gross and gross to net amounts. VAT rates: 23%, 8%, 5%, 0%.
Calculate VAT →Loan Installment Calculator
Calculate mortgage or cash loan installments. Equal and decreasing installments with full cost breakdown.
Calculate installment →Credit Capacity
Check your approximate maximum loan amount based on income, expenses and loan period.
Check capacity →How to choose a tax form in 2026?
Choosing a tax form is one of the most important financial decisions for an entrepreneur. Each form has its advantages and limitations — the key is matching it to your individual situation.
Tax Scale (Progressive Tax 12%/32%)
- Tax-free amount of 30,000 zł per year
- Joint filing with spouse
- Beneficial for income up to ~120,000 zł
- Health insurance contribution 9% of income
Flat Tax (19%)
- Fixed rate regardless of income
- Health insurance contribution only 4.9%
- No tax-free amount or deductions
- Beneficial above ~120,000 zł income
Lump-sum Tax
- Rates from 2% to 17% on revenue
- No option to deduct costs
- Lowest health insurance contributions (3 tiers)
- Ideal for IT (12%) and services (8.5%)
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