Finance · 6 min
IKZE and IKE — Tax Relief for Retirement Savings in Poland 2026
How do IKZE and IKE work in 2026? We compare contribution limits, tax benefits, and when to choose IKZE over IKE for retirement saving in Poland.
· Liczbnik Editorial
Blog — page 19
Business · 7 min
ZUS Contributions for the Self-Employed in Poland 2026
Complete guide to ZUS social security contributions for sole traders in Poland 2026: preferential ZUS, Small ZUS Plus, full ZUS — rates and calculation examples.
· Liczbnik Editorial
Taxes · 6 min
Property Tax in Poland 2026 — Rates and How to Calculate
Current property tax rates in Poland for 2026, who pays it, how to calculate your bill, and when exemptions apply.
· Liczbnik Editorial
Business · 7 min
How Much Is Your Business Worth — Company Valuation Methods
A practical guide to valuing a business in Poland: EBITDA multiples, DCF, book value, and comparable transactions — with worked examples.
· Liczbnik Editorial
Real estate · 8 min
Buying vs Renting an Apartment in Poland — What Makes More Sense in 2026
Should you buy or rent in Poland? We compare the full cost of a mortgage purchase with renting in 2026, including worked examples for Warsaw, Kraków and smaller cities.
· Liczbnik Editorial
Health · 6 min
How to Calculate BMI for Children — Percentile Charts and Age Norms
BMI for children is interpreted differently from adults. Learn about percentile charts, how to calculate a child's BMI, and when parents should be concerned.
· Liczbnik Editorial
Science · 5 min
Energy Unit Converter: kWh, MJ, kcal — How to Compare Them
How to convert kilowatt-hours, megajoules, and kilocalories? Conversion formulas and practical examples from energy bills and nutrition labels.
· Liczbnik Editorial
Investments · 6 min
How to Calculate ROI — Return on Investment Explained
ROI is one of the most important financial metrics. Learn how to calculate and interpret it — with examples for stocks, real estate, and marketing campaigns.
· Liczbnik Editorial
Finance · 6 min
Currency Converter — EUR, USD, GBP to PLN Exchange Rates 2026
How to check the current exchange rate and convert EUR, USD or GBP to Polish zloty? We explain where to find NBP rates and how to avoid hidden fees.
· Liczbnik Editorial
Salaries · 7 min
Business Travel Allowance Calculator — Domestic and International Per Diems 2026
How much is the daily allowance for a business trip in Poland in 2026? Learn how to calculate per diems, overnight allowances, and travel cost reimbursements.
· Liczbnik Editorial
Finance · 6 min
Statutory Interest Rates in Poland 2026 — How to Calculate Late Payment Interest
What are statutory and late payment interest rates in Poland? How to calculate overdue interest step by step and what is the NBP reference rate in 2026.
· Liczbnik Editorial
Business · 8 min
How to Calculate Health Insurance (NFZ) Contribution for Self-Employed in Poland 2026
New rules for the health insurance contribution for sole traders in Poland 2026 — how to calculate NFZ on a JDG, differences between tax forms and the minimum contribution.
· Liczbnik Editorial