Debit Note Generator

A debit note generator creates a debit note to a supplier against their invoice: your business, supplier, debit note number, date, original invoice number, reason (such as a return, shortage or price correction) and itemised amounts with a total.

A debit note is the mirror image of a credit note, issued from the buyer's side: when you return goods to a supplier, receive a short shipment, or need to correct an undercharge on their invoice, a debit note formally records that you're claiming back money or adjusting what you owe them.

This generator references the supplier's original invoice number, records the reason for the adjustment, and lists the specific items or amounts involved with computed totals. As with credit notes, keeping a clear, documented reason matters for both your internal records and GST compliance.

Send the debit note to your supplier as formal notice of the adjustment, and follow up to confirm they've processed a corresponding credit note or refund on their end — the two documents should reconcile with each other for both parties' books to stay accurate.

Keeping a numbered, dated record of every debit note you issue also makes supplier performance visible over time — if the same supplier keeps generating debit notes for shortages or quality issues, that pattern is worth raising directly with them, or worth factoring into your next sourcing decision.

Attach the debit note alongside the original purchase order and delivery documentation when you send it, so the supplier can verify your claim quickly without a back-and-forth over which shipment or invoice it refers to.