Calculators for law, finance, work and real estate
Use free online calculators for law, finance, employment and real estate.
Quickly calculate alimony, interest, salary, loan costs, transfer tax and other values you need before making a decision.
Calculator categories
Browse by topic
All calculators
Child support calculator for a child — estimated amount
Child support calculator (estimate)
Spousal maintenance calculator
Spousal maintenance — estimated monthly amount
Fixed asset depreciation calculator
Straight-line fixed-asset depreciation
B2B calculator — net, contributions, ZUS
B2B net — ZUS and tax
Family gift exemption calculator
Family gifts — estimated tax and exemptions
Division of estate costs calculator
Division of estate — estimated procedure cost
Inflation and purchasing power calculator
See how much your savings will be worth with inflation
Loan calculator — instalment, APR, cost
Calculate instalment, APR and total loan cost
Related guides by topic
Read guides related to calculators in the areas of law, finance, employment and real estate.
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Frequently asked questions
Answers to the most common questions about our legal and financial calculators.
Over 100 free calculators across 4 categories: law (alimony, reserved share, contractual penalties), finance (loans, taxes, lump-sum), work (salary, B2B, leave) and real estate (mortgage, PCC tax, deposit). Results are indicative and do not replace legal or financial advice.
Yes — all calculators are completely free and require no registration. You can use them without any limits.
Use the search bar at the top of the page, or browse one of the 4 categories: Law, Finance, Work, Real Estate. Each category is divided into topics — you can also browse calculators by topic.
No — results are indicative only and are intended for preliminary assessment. For legal, tax or financial matters, always consult a lawyer, tax advisor or notary.
Regularly — we update calculators with every change in regulations (including ZUS rates, tax thresholds, minimum wage). If you notice an outdated result, let us know via the contact form.
On prawopro.pl you can find a directory of law firms and accounting offices. Search by location and specialisation, then send an enquiry directly through the platform.