Late-payment interest calculator
Calculate late-payment interest and the flat fee when an invoice is overdue.
Late-payment interest
€9.26
- Interest rate
- 11.27 %
- Flat fee (B2B, §288)
- €40
- Total interest + flat fee
- €49.26
01
Interest rate
The rate is the base rate plus a surcharge: 9 percentage points between businesses, 5 towards consumers.
02
Base rate
The Deutsche Bundesbank publishes the base rate twice a year — enter the current value.
03
€40 flat fee
In business dealings (B2B) an additional flat fee of €40 may be charged (§288 (5) BGB).
Non-binding calculation, not legal advice. The base rate changes twice a year; the €40 flat fee applies to B2B only.
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