Business

Overdue commercial-invoice interest

Itemise interest, partial principal payments and a factual payment reminder.

For tax year 2026
Rules last checked 27 October 2026
Takes about 2 minutes

How this works

Interest starts the day after the confirmed due date, through the selected date, without compounding. A payment reduces principal from its effective date. The stored statutory rate covers only 1 July–31 December 2026; uncovered periods require confirmation.

Methodology and disclaimer

Worked example

For €1,000 due on 1 July 2026 and calculated through 21 July, the 20-day scenario at 10.15% gives €5.56 interest, with a separate conditional €40 recovery item.

Assumptions

Indicative result. Source rules await human verification; confirm exceptional cases with the responsible professional or authority.

Limits

No. The reminder is local draft text. Verify jurisdiction, due date, rate, payment allocation and applicability before using it. Consumer, disputed and insolvency cases need another route.

Edge cases

Interest starts the day after the confirmed due date, through the selected date, without compounding. A payment reduces principal from its effective date. The stored statutory rate covers only 1 July–31 December 2026; uncovered periods require confirmation.

Sources

Commercial late payment and national interest ratesEuropean CommissionThe stored Greek rate covers only 1 July–31 December 2026. Other periods are not filled by assumption.
Greek late-payment framework: law 4152/2013Ministry of Rural Development and FoodHistorical official explanation of the national framework, not a live interest-rate table.

Questions and answers

Can this send a demand or guarantee recovery?

No. The reminder is local draft text. Verify jurisdiction, due date, rate, payment allocation and applicability before using it. Consumer, disputed and insolvency cases need another route.

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Business

Overdue commercial-invoice interest

Itemise interest, partial principal payments and a factual payment reminder.

For tax year 2026
Rules last checked 27 October 2026
Takes about 2 minutes

Your records and assumptions

Applicable jurisdiction confirmed

Debtor acting as

Commercial debt, confirmed due date, obligations fulfilled, attributable delay and no dispute/insolvency?

Confirmed payment due date

If no payment date was agreed, establish the legal due date from receipt/acceptance first. Do not assume the invoice issue date.

Calculate through this date

Original invoice principal (€)

Interest-rate basis

Principal payment

Number of rows

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Your result and evidence

–

How this works

Methodology and disclaimer

Worked example

For €1,000 due on 1 July 2026 and calculated through 21 July, the 20-day scenario at 10.15% gives €5.56 interest, with a separate conditional €40 recovery item.

Assumptions

Indicative result. Source rules await human verification; confirm exceptional cases with the responsible professional or authority.

Limits

No. The reminder is local draft text. Verify jurisdiction, due date, rate, payment allocation and applicability before using it. Consumer, disputed and insolvency cases need another route.

Edge cases

Interest starts the day after the confirmed due date, through the selected date, without compounding. A payment reduces principal from its effective date. The stored statutory rate covers only 1 July–31 December 2026; uncovered periods require confirmation.

Sources

Commercial late payment and national interest ratesEuropean CommissionThe stored Greek rate covers only 1 July–31 December 2026. Other periods are not filled by assumption.
Greek late-payment framework: law 4152/2013Ministry of Rural Development and FoodHistorical official explanation of the national framework, not a live interest-rate table.

Questions and answers

Can this send a demand or guarantee recovery?

No. The reminder is local draft text. Verify jurisdiction, due date, rate, payment allocation and applicability before using it. Consumer, disputed and insolvency cases need another route.

All tools

How this works

Worked example

Assumptions

Limits

Edge cases

Sources

Questions and answers

Related tools

Your records and assumptions

Principal payment

How this works

Worked example

Assumptions

Limits

Edge cases

Sources

Questions and answers

Related tools

Your records and assumptions

Principal payment