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Cancel an invoice sent by mistake — reference it and credit it in full, in a professional PDF.
100% freeNo signupNo watermarkInstant PDF download
A duplicate-invoice credit note cancels an invoice you sent in error — a double-billing or a wrong invoice raised against a customer. Because you never delete a sent invoice, you issue a credit note for the full amount to void it cleanly.
This template opens with itemised lines. Reference the erroneous invoice, credit it in full, explain it was a duplicate, and download a PDF credit note.
Note: Voids a duplicate invoice · references the erroneous invoice
Leave both invoices on record and issue a credit note that references the duplicate and credits it in full, noting it was raised in error. The correct invoice stays live; the duplicate is offset to zero.
Deleting a sent, numbered invoice breaks your audit trail and can cause tax gaps. A credit note is the correct, traceable way to void it.
Yes — create and download it with no account.
Yes — CalculatorAI's credit note generator is completely free. Create, customise and download as many professional PDF credit notes as you want, with no signup, no watermark and no trial limit. A free account adds saved clients, history and the Invoices Tracker.
A credit note (or credit memo) is a document that cancels or reduces an amount on an invoice you already sent — for a return, cancellation, overcharge or post-invoice discount. It references the original invoice and is either applied against the buyer’s account or refunded.
A credit note cancels or reduces an invoice you already sent. The Invoices Tracker keeps your invoices, credit notes and what each client still owes together — so your books always reconcile.
Open the Invoices Tracker