intajLate payment interest calculator
A client paid late? See the interest and the fixed compensation the law lets you add to an overdue business invoice, at the official rate for each country, then put it on an invoice in one click. Nothing you type is sent anywhere.
Simple interest, counted per day (actual days ÷ 365), at the rate that applies to each half-year. General information, not legal advice: check your contract and local rules before you claim.
Rates used by this calculator
Statutory interest for late business payments, as published by each country's official sources. The rate changes every six months in most countries; the table shows the rate for the second half of 2026.
| Country | Rule | Rate, Jul–Dec 2026 | Fixed compensation | Source |
|---|---|---|---|---|
| United Kingdom | Bank of England rate + 8 points | 11.75% | £40 / £70 / £100 | Official source |
| Ireland | ECB rate + 8 points | 10.40% | €40 / €70 / €100 | Official source |
| Germany | Base rate + 9 points | 10.52% | €40 | Official source |
| Austria | Base rate + 9.2 points | 10.73% | €40 | Official source |
| France | ECB rate + 10 points | 12.40% | €40 | Official source |
| Belgium | ECB rate + 8 points, rounded up to the next half point | 10.50% | €40 | Official source |
| Netherlands | ECB rate + 8 points | 10.40% | At least €40 | Official source |
| Spain | ECB rate + 8 points | 10.40% | €40 | Official source |
| Portugal | ECB rate + 8 points | 10.40% | At least €40 | Official source |
| Italy | ECB rate + 8 points | 10.40% | €40 | Official source |
| Japan | Statutory rate (Civil Code) | 3% | None | Official source |
| South Korea | Commercial statutory rate | 6% | None | Official source |
Questions
Can I really charge interest if my contract says nothing about it?
In the UK and the EU, yes: the late payment laws give a business the right to statutory interest and a fixed compensation on an overdue invoice to another business, even when the contract is silent. A contract can set a different rate, but in the EU it cannot simply remove the right. Invoices to consumers follow different rules.
From which day does the interest run?
From the day after the due date until the day the client pays. If no due date was agreed, the EU rules generally use 30 days after the client received the invoice or the goods or services.
What is the fixed compensation?
A flat amount per overdue invoice for the cost of chasing it: at least 40 euros in the EU, and 40, 70 or 100 pounds in the UK depending on the size of the debt. You can claim it on top of the interest.
Do I add VAT to the late fees?
Statutory interest and the fixed compensation are compensation, not a supply, so in most countries no VAT is added. The invoice this tool creates leaves them without tax.
Will claiming interest hurt the client relationship?
Sometimes it is the push that gets an invoice paid. Many freelancers mention the right in their payment terms and claim it only when a client is very late. The amount is yours to decide: you can always claim less than the law allows.
Is anything I type saved or sent?
No. The calculator runs in your browser and does not store or send the numbers you enter.
Read the guide: how to chase a late invoice, with reminder templates