Updated 30 October 2026

Short-term deposits: Real net earnings compared

Illustration: Short-term deposits: Real net earnings compared

We examine the actual returns on deposits lasting up to 3 months. We compare net amounts after the 19% Belka tax.

Net earnings: PLN 10,000 and PLN 50,000

When choosing a deposit, it is important to look at the ‘take-home’ amount. For Nest Bank — Nest Lokata Witaj 3M (promotional rate 5.25%), net interest on PLN 10,000 for 3 months is PLN 106.31, and on PLN 50,000 it is PLN 265.78.

In comparison, Alior — Lokata mobilna 99 dni (4% interest) offers PLN 87.88 net from PLN 10,000 and PLN 439.4 net from PLN 50,000. Meanwhile, Alior — Lokata na nowe środki 92 dni (3.3% interest) yields PLN 67.37 net from PLN 10,000 and PLN 336.87 net from PLN 50,000.

Amount limits and the tax mechanism

Each offer has a limit on the amount covered by the specific interest rate. Nest Bank — Nest Lokata Witaj 3M covers PLN 25,000. Alior — Lokata mobilna 99 dni and Alior — Lokata na nowe środki 92 dni have a higher limit of PLN 300,000.

Note that a 19% capital gains tax (Belka tax) is applied to the interest earned. The amounts listed above are net values, meaning the tax has already been deducted.

Duration and rates

Short-term deposits vary in length. The comparison includes products for 92 days, 99 days, and 3 months. Rates can be standard or promotional, which affects the final financial outcome.

Data: banks’ pages and fee tables in our database. Interest calculations are ours and indicative, before any fees. General information, not financial advice.