Debit Memo
A debit memo formally increases the amount a customer owes.
A debit memo (debit note) documents an increase to a previously issued invoice — for unbilled items, price corrections, or missed charges. It references the original invoice and explains the additional amount. Like a credit memo, it keeps the correction linked to the original transaction for clean records.
Example
A freight company issues a $120 debit memo for fuel surcharges missed on the original invoice.
Related terms
Frequently asked questions
When should I use a debit memo instead of a new invoice?
When the extra charge corrects an existing invoice and you want the paper trail linked. A new invoice works too, but the memo makes the reason for the increase explicit.
Can a customer dispute a debit memo?
Yes. Document the reason clearly and make sure your contract supports the charge — discussing it with the customer before issuing the memo prevents most disputes.
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