How the calculation works
- Formula
- ECB main refinancing operations rate + 8 percentage points, pro-rated by late days.
- Current stored rate
- 2.40% source rate effective 2026-06-17; current stored formula rate 10.40%.
- Recovery compensation
- A minimum fixed recovery cost of EUR 40 may apply for qualifying B2B commercial debts.
- Primary source
- EU Directive 2011/7/EU
For a EUR 10,000 invoice, the calculator splits the overdue period by ECB rate changes and applies the relevant annual statutory rate to each period.
This tool calculates interest mechanically from stored rate data. It is not legal advice. Always check the contract, governing law, debtor status, and any sector-specific rules.
Frequently asked questions
Which EU rate does this calculator use?
It uses the ECB main refinancing operations rate plus 8 percentage points for euro-area B2B calculations.
Does the EUR 40 compensation always apply?
The Directive provides a minimum fixed recovery cost for qualifying commercial debts, but national law and contract facts should be checked.
Can national EU rules be higher?
Yes. Some countries set higher statutory rates or specific rules, so use a country-specific calculator when the governing law is known.