Debit note: definition, example, and why it matters

Issued when extra work, parts, or fees become billable after the invoice was sent — instead of editing the original invoice, a separate debit note keeps the audit trail clean.

• Short definition. A document that increases the amount a buyer owes after the original invoice.
• Category. Debit note is a invoicing term used by service businesses when billing customers.
• How Glo Invoice handles it. Glo Invoice builds debit note into the invoice itself, so you don't track it on paper or in a spreadsheet.

Frequently asked questions

What does debit note mean?

Issued when extra work, parts, or fees become billable after the invoice was sent — instead of editing the original invoice, a separate debit note keeps the audit trail clean.

Related terms

• Credit note — A document issued by a seller that reduces the amount a buyer owes.
• Invoice — A document a business sends a customer requesting payment for goods or services.
• Change order — A signed addendum modifying the price, scope, or schedule of an existing job.