Examples
• 10,000 PLN, 9.25% p.a., 365 days → interest 925 PLN.
• 10,000 PLN, 9.25% p.a., 30 days → interest approx. 76 PLN.
• 50,000 PLN, 10% p.a., 90 days → interest approx. 1,233 PLN.
FAQ
- What are statutory interest?
- Interest under Civil Code Art. 481². The annual rate = NBP reference rate + 3.5 percentage points. They apply e.g. when the agreement does not provide for another rate or for arrears.
- How do statutory and contractual interest differ?
- Statutory — set by law (NBP + 3.5 p.p.), used when the agreement has no rate. Contractual — set in the agreement (e.g. loan, credit); may be higher or lower, subject to usury act limits.
- How is interest calculated?
- The calculator uses the simple method: amount × annual rate × (days / 365). In practice banks and agreements may use 365/365 or 360/365 — the result is indicative.
- Where to get the current statutory interest rate?
- The rate depends on the NBP reference rate (published by NBP). The current formula is reference rate + 3.5 p.p. Check the NBP or gov.pl website.
- Does the calculator include compound interest?
- No. The calculator uses simple interest (no compounding). For long periods and compound interest a different formula is needed.
Legal information
Calculations are for information and estimation only. They do not constitute legal, tax or other professional advice. For individual matters, consultation with a lawyer, tax adviser or other specialist is recommended.
Legal basis
Civil Code Art. 481² (statutory interest). The calculator uses simple interest; the rate may change (NBP). For contracts and arrears check the agreement and regulations.
