Cancelling a wrongly sent invoice (zeroing correction)

An invoice already sent to KSeF can’t be deleted. If it was issued by mistake — for example with the wrong buyer’s or seller’s NIP, or the transaction never happened at all — the only path is to zero it out with a zeroing correction, then issue a new document.

Why you can’t just fix the NIP

A correction never changes the NIP on an invoice. KSeF delivers invoices based on the NIP — a “fixed” NIP would reach a different taxpayer, not the right recipient. The correct path is to zero out the invoice and issue a new one, with the correct NIP from the start.

What this operation creates

Zeroing out creates two documents:

1. A zeroing correcting invoice — zeroes out all the line items and amounts of the original invoice. The original invoice stays in KSeF; the correction reaches the counterparty the same way.
2. A new original invoice — a fresh document, issued after the zeroing, with the correct details.

How to zero out an invoice

1. Open the invoice that needs to be cancelled.
2. Choose Zero out this invoice (zeroing correction).
3. Optionally give a reason for the correction.
4. Confirm sending to KSeF.
5. After zeroing out, issue a new invoice with the correct details — this is an ordinary new invoice, not a correction.

Caution

Once a zeroing correction is sent, the operation can’t be undone. Any further change requires issuing a new invoice.

What’s next

• When to issue a correction
• Issuing your first invoice