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
Law
Calculators related to family law, inheritance, contracts and claims.
Finance
Tools for calculating loans, leasing, taxes, contributions and interest.
Work
Salary, leave, employee cost and termination calculators.
Real estate
Calculators for mortgages, rental and buying or selling real estate.
Browse by topic
All calculators
Loan interest calculator
Loan interest — calculator
Tax interest calculator — arrears interest
Tax interest — calculator
ZUS interest calculator
ZUS interest — calculator
OC compensation calculator — estimate
OC compensation (estimate) — quick claim simulation
Rental yield calculator (investment)
Is renting worth it — income, tax, costs
Notary fees calculator
Notary fees — deed, power of attorney
PCC calculator — civil transaction tax
PCC — contracts, loans, sales
PCC on flat purchase — calculator
PCC on flat purchase — exemptions
Linear tax 19% calculator
Linear 19% tax for sole proprietors
Gift tax — rules, groups and obligations
Gift tax (SD)
Inheritance tax calculator
Inheritance tax (SD) — quick estimate
Property sale tax calculator
Property sale tax (19%)
Related guides by topic
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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 If you notice an outdated result, let us know via the contact form.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.