Late payment interest in countries with their own reference rate
In Austria, Finland, Hungary, Poland, Slovakia and Sweden, statutory interest on late business invoices uses a national reference rate plus a fixed margin, from 8 points (for example Sweden) to 10 points (Poland). This page gives each rule and its official source.
These 6 countries do not use the plain ECB rate plus 8. Each one names its own reference rate or a different margin. Overdue Kit has checked the rule in the official source, but does not store the national reference rate, so you enter the final rate yourself.
| Country | Margin | Law |
|---|---|---|
| Austria | 9,2 points | UGB § 456 |
| Finland | 8 points | Korkolaki 633/1982, § 4a |
| Hungary | 8 points | 2013. évi V. törvény (Ptk.) |
| Poland | 10 points | Ustawa, Dz.U. 2023 poz. 711 |
| Slovakia | 9 points | Nariadenie vlády 21/2013 |
| Sweden | 8 points | Räntelag (1975:635) |
How to work out the rate
- Find the date the debt became late: the day after the due date.
- Look up the national reference rate for that date, in the source named for the country below.
- Add the margin from the table. The sum is the yearly statutory rate.
- Interest = invoice amount x rate / 365 x days late. Add at least EUR 40 compensation.
The countries
Austria: reference rate plus 9,2 points
Austrian law uses the OeNB base rate (Basiszinssatz) plus 9,2 points. Law: UGB § 456. To find your rate, look up the reference rate in force for the half-year in which the debt became late, and add 9,2 points.
Finland: reference rate plus 8 points
Finnish law uses the Bank of Finland reference rate (based on the ECB rate) plus 8 points. Law: Korkolaki 633/1982, § 4a. To find your rate, look up the reference rate in force for the half-year in which the debt became late, and add 8 points.
Hungary: reference rate plus 8 points
Hungarian law uses the MNB central bank base rate valid on the first day of the half-year plus 8 points. Law: 2013. évi V. törvény (Ptk.). To find your rate, look up the reference rate in force for the half-year in which the debt became late, and add 8 points.
Poland: reference rate plus 10 points
Polish law uses the NBP reference rate plus 10 points. Law: Ustawa, Dz.U. 2023 poz. 711. To find your rate, look up the reference rate in force for the half-year in which the debt became late, and add 10 points.
Slovakia: reference rate plus 9 points
The 2013 text of the Slovak regulation uses the ECB rate plus 9 points. Check the current version. Law: Nariadenie vlády 21/2013. To find your rate, look up the reference rate in force for the half-year in which the debt became late, and add 9 points.
Sweden: reference rate plus 8 points
Swedish law uses the Riksbank reference rate plus 8 points. Law: Räntelag (1975:635). To find your rate, look up the reference rate in force for the half-year in which the debt became late, and add 8 points.
Questions
Why does the calculator not fill in a rate for these countries?
Their law uses a national reference rate that Overdue Kit does not download yet. The calculator shows the rule and links the official source, and you enter the rate.
Which margin applies?
Austria: 9,2 points; Finland: 8 points; Hungary: 8 points; Poland: 10 points; Slovakia: 9 points; Sweden: 8 points.
Do I still get the EUR 40 compensation?
Yes. The directive gives at least EUR 40 per late business invoice in every EU country.
Rates and sources as stored on 11 October 2026. Business-to-business debts only. Templates and calculations, not legal advice.