Deposit Calculator (with Belka tax)
How much will you actually earn on a Polish bank deposit after the 19% Belka tax?
A PLN 20,000 deposit over 12 months at 6.5% annual interest generates PLN 1,300 gross interest, PLN 247 in 19% Belka capital gains tax, and PLN 1,053 net profit. The kreddo.pl calculator supports two capitalization modes: end-of-term (simpler) and monthly compounding (slightly higher profit due to compound interest). Deposits are BFG-insured up to EUR 100,000 per person per bank.
Gross interest
PLN 1,300
Belka tax 19%
PLN 247
Net interest
PLN 1,053
Final amount
PLN 21,053
Frequently asked questions
How to calculate deposit profit with Belka tax?
Polish banks withhold 19% tax on capital gains (the so-called Belka tax). Formula: net interest = gross interest × 0.81. A PLN 20,000 12-month deposit at 6.5% generates PLN 1,300 gross interest, PLN 247 tax, and PLN 1,053 net.
Monthly vs end-of-term capitalization — which is better?
Monthly capitalization adds interest to the principal each month, increasing the interest base — compound interest. At PLN 20,000 for one year at 6.5%, this adds ~PLN 17 compared to end-of-term. The difference grows with longer terms and larger amounts.
What is the Belka tax?
It is the unofficial name for the 19% Polish capital gains tax introduced in 2002 by finance minister Marek Belka. It applies to interest on deposits, savings accounts, bonds, dividends, investment fund and ETF gains, and stock sale profits. IKE, IKZE, PPK and 10-year government bonds are exempt.
Is a deposit safe?
Yes — the Polish Bank Guarantee Fund (BFG) insures up to EUR 100,000 per person per bank. The guarantee covers all commercial banks and credit unions in Poland. For amounts above EUR 100k, split across multiple banks for full protection.