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Statutory Interest Calculator

Calculate statutory interest (capital, delay, commercial) according to Polish law.

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How does this calculator work?

Calculate statutory interest (capital, delay, commercial) according to Polish law.

Free online calculator. Accurate calculations. Easy to use.

Frequently Asked Questions

Statutory interest is calculated as the sum of the NBP reference rate and the appropriate addition (3.5% for capital interest, 5.5% for delay interest, 8% for commercial interest). Our statutory interest calculator on estim.at automatically fetches current reference rates and calculates interest for the selected period.
Capital interest (statutory) is calculated on the amount due and equals the NBP reference rate + 3.5%. Delay interest is calculated when the debtor fails to fulfill the obligation on time and equals the NBP reference rate + 5.5%. Our calculator on estim.at allows you to select the appropriate interest type.
Interest in commercial transactions equals the NBP reference rate + 8% (or 10% in some cases). Our statutory interest calculator on estim.at automatically calculates commercial interest for the selected period, taking into account changes in reference rates over time.