Deposits, savings, inflation and bonds

Four savings calculators in one place. You enter all the rates yourself, so you can compare any offers.

Deposit
%

Result

Net interest405.00
Final amount10,405.00
Gross interest
500.00
Tax
95.00
Net annual rate
4.05%

Tax is taken at each capitalisation, without the rounding banks apply.

Embed on your site

Paste this code into your page’s HTML. The tool sets its own height, and the link to Kalkio has to stay visible.

Calculator by Kalkio · kalkio.app

Tax on interest

In Poland, interest from deposits, savings accounts and bonds is taxed at 19% (the “Belka tax”), taken automatically at each capitalisation. Untick the option if your savings are tax-free.

Compound interest

When interest is added to the balance, later interest is earned on a larger amount. Over many years of regular saving, interest on interest makes up a large part of the result.

Inflation

At 4% inflation a year, 10,000 in 10 years will buy what about 6,756 buys today. Savings only grow in real terms when the after-tax rate beats inflation.

Common questions

Does it use current bond offers?

No, because terms change every month. Enter the first-year rate and margin from the current offer.