ROI Calculator
Calculate return on investment (ROI). Enter the investment cost and the return received – get ROI percentage, profit, and annualised ROI if you provide the period.
The Belka tax is a 19% flat tax on capital income in Poland: interest from deposits and bonds, dividends, and gains from selling shares, investment funds, and cryptocurrencies. This calculator shows your tax liability and net profit after tax.
Tax = gross profit × 19%. Net profit = gross profit - tax. The Belka tax is withheld at source by the bank or broker — you generally do not need to report it in your PIT return. Exception: income from foreign sources.
Deposit interest: PLN 1,000 gross. Belka tax (19%): PLN 1,000 × 0.19 = PLN 190. Net profit: PLN 1,000 - PLN 190 = PLN 810. The effective return falls by 19% due to the tax.
The Belka tax (podatek Belki) is a 19% flat-rate tax on capital income in Poland, named after Finance Minister Marek Belka who introduced it in 2002. It covers interest, dividends, and capital gains.
Yes. For Polish bank deposits, investment funds, and listed securities, the tax is withheld at source by the financial institution. You receive the net amount and do not need to report it in your annual PIT.
Yes, but you must report and pay the tax yourself in your annual PIT-38 declaration. Foreign brokers and banks do not withhold Polish tax at source.
No. Capital income is taxed separately from employment income and does not benefit from the general tax-free allowance (kwota wolna). Every zloty of capital gain is subject to 19%.
Yes. For capital gains from securities (shares, ETFs), losses from one year can be offset against gains. You can deduct losses over 5 years. Bank interest losses cannot be deducted.
Yes. Interest earned on savings accounts (konta oszczędnościowe) in Poland is subject to the 19% Belka tax, withheld by the bank at the point of interest payment.
It reduces returns by 19%. A 5% gross return becomes a 4.05% net return. A 10% gross return becomes 8.1% net. Always check net returns when comparing investment products.
Gains from selling cryptocurrency are taxed at 19% in Poland. You must report them in the annual PIT-38 declaration. Losses can be offset against gains in the same or subsequent years.
Yes, at 19%. However, if the country of the paying company withheld a dividend tax and Poland has a double-taxation treaty with that country, you may be able to offset that foreign tax against your Polish liability.
If you have income from foreign sources or capital gains from securities, you file PIT-38. For Polish deposits and funds where tax is withheld at source, no declaration is required.
The calculator computes capital gains tax at the 19% rate. Actual tax obligations may vary depending on the investment type and applicable tax regulations.
Calculate return on investment (ROI). Enter the investment cost and the return received – get ROI percentage, profit, and annualised ROI if you provide the period.
Calculate compound interest: final value, interest earned and capital growth. Free calculator with monthly, quarterly and yearly compounding.
Calculate Polish income tax (PIT) using the 2026 tax scale: 12% and 32%. Includes the PLN 30,000 tax-free amount and the relief for young people.