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Late Payment Interest Calculator

Calculate statutory interest on overdue invoices under EU law

Late Payment Interest Calculator

Based on EU Directive 2011/7/EU. Verify the current ECB reference rate at ecb.europa.eu.

Calculate the statutory interest you're entitled to charge on overdue invoices under EU Late Payment Directive 2011/7/EU. Enter the invoice amount, due date, and payment date to get the exact interest figure to include in your reminder.

How overdue invoice interest is calculated in the EU

Under EU Directive 2011/7/EU on combating late payment, businesses are entitled to charge statutory interest on overdue B2B invoices without any prior warning or formal notice. The statutory rate is the ECB reference rate plus 8 percentage points. Payment is considered late after 30 days for public authorities and 60 days for private companies unless a shorter period is agreed in writing. This calculator applies the current ECB rate automatically based on your invoice due date — you can also enter a custom rate if your contract specifies different terms.

When can you charge late payment interest?

Three conditions must be met: the invoice must have been sent, the payment deadline must have passed, and the buyer must be a business (B2B). The EU directive covers commercial transactions only — it does not apply to consumer sales. Crucially, the right to statutory interest is automatic under EU law; no formal reminder or prior notice is required before you start charging interest in most EU jurisdictions.

Late payment interest rates by EU country (2026)

CountryRate basisNotes
GermanyECB + 9% (§ 288 BGB)Consumer contracts: ECB + 5%
FranceECB + 8%Statutory default
NetherlandsECB + 8%Statutory default
SpainECB + 8%Statutory default
ItalyECB + 8%Statutory default
PolandECB + 8%Statutory default
AustriaECB + 9.2%Higher than EU baseline

The ECB reference rate is updated on 1 January and 1 July each year. As of 1 January 2026 the rate is 2.65%.

Frequently Asked Questions

Frequently Asked Questions

How do I calculate overdue invoice interest?
Multiply the invoice principal by the statutory rate (ECB reference rate + 8%) and then by the number of days overdue divided by 365. For example: €5,000 × 10.65% × 45 days ÷ 365 = €65.55 in interest. This calculator does the arithmetic automatically.
Can I charge late payment interest on consumer invoices?
No. EU Directive 2011/7/EU applies to B2B commercial transactions only. Consumer contracts are governed by national law, which typically sets lower or no automatic statutory interest.
Do I need a contract clause to charge late interest?
No. Under EU law the right to statutory interest on overdue B2B invoices is automatic — you do not need a specific contract clause or to send a formal reminder before charging it.
What is the current ECB reference rate?
As of 1 January 2026 the ECB reference rate is 2.65%, giving a statutory late payment rate of 10.65% (2.65% + 8%). The rate is reviewed every six months on 1 January and 1 July each year.

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