Interest & Late Payment Debit Note Template
Charge interest on an overdue invoice — the amount, days late and rate — in a professional PDF.
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Debit Note
How to write a interest & late payment debit note
An interest debit note charges interest or a late-payment fee on an invoice that was paid late or is overdue, where your terms or the law allow it. It states the overdue amount, the days late and the rate, and adds the interest against the invoice.
This template opens with itemised lines. Reference the overdue invoice, charge the interest and any fixed fee, note the rate and days, and download a PDF debit note.
What to include
- “Debit Note” label with its own number and date
- A reference to the overdue invoice
- The overdue amount, days late and the interest rate
- The interest and any fixed late fee, with tax as applicable
- The new total now due
Note: Interest on an overdue invoice · states the rate and days late.
Frequently asked questions
Can I charge interest on a late invoice?
If your terms or local law allow it, yes. A debit note referencing the overdue invoice states the amount, days late and rate, and adds the interest (plus any fixed fee) to what is owed.
What rate should I use?
Use the rate in your payment terms or the statutory late-payment rate for your country. Show the rate and the days on the debit note so the charge is transparent.
Is the interest debit note template free?
Yes — create and download it with no account. This is a template, not legal advice — check the rules for your jurisdiction.
Is this debit note generator free?
Yes — CalculatorAI's debit note generator is completely free. Create, customise and download as many professional PDF debit notes as you want, with no signup, no watermark and no trial limit. A free account adds saved clients, history and the Invoices Tracker.
What is the difference between a debit note and a credit note?
A debit note increases the amount owed on an invoice already issued — for an undercharge, additional charges or interest. A credit note does the opposite: it reduces or cancels what is owed. Buyers also raise debit notes to notify a supplier of a return or a claim.
Keep debit notes and invoices in one place
A debit note increases what a customer owes on an invoice already sent. The Invoices Tracker keeps your invoices, debit notes and what each client still owes together — so your books always reconcile.
Open the Invoices Tracker