An error on an invoice? It can happen to anyone. Undoubtedly, the key is knowing the difference between a correcting invoice vs a correction note, because these two documents are used to fix completely different types of mistakes. Although both are used for corrections, their application, scope, and issuer are entirely different. Therefore, in this guide, we explain the key differences to ensure your accounting is always compliant.

Correcting Invoice vs Correction Note: Who Issues the Document?

This is the most important rule that distinguishes the two documents:

• First and foremost, a correcting invoice (faktura korygująca) is ALWAYS issued by the seller—the one who issued the original, incorrect invoice.
• On the other hand, a correction note (nota korygująca) is ALWAYS issued by the buyer—the one who received the invoice with an error.

As a result, this information alone solves half of the dilemmas. If you made a mistake on your own invoice, you fix it with a correcting invoice. Whereas, if your supplier made a mistake on an invoice you received, you can (but don’t have to) issue a correction note.

What Can You Fix? The Scope of Correction

The second key difference relates to the types of errors that can be fixed with each document.

What Can You Fix with a Correcting Invoice? (Almost Everything)

A correcting invoice has a very broad application. Specifically, you will use it to correct any element of the invoice, especially errors that affect numerical values.

For example, you will issue a correcting invoice when:

• The price, quantity, or value of the goods/service has changed.
• You have granted the customer a discount after the invoice was issued.
• The customer has returned the goods.
• Furthermore, when you have used the wrong VAT rate or amount.

Simply put, a correcting invoice is a universal tool in the hands of the seller.

What Can You Fix with a Correction Note? (Only Formal Errors)

A correction note, issued by the buyer, has a much narrower application. In other words, it is used to correct only formal (descriptive) errors that do not affect the financial values of the transaction.

With a correction note, you can fix:

• A typo in the buyer’s name.
• An error in the buyer’s address.
• An incorrect buyer’s NIP (Tax ID) number.

However, a correction note requires the seller’s acceptance. The regulations do not impose a specific form for this acceptance—it can be a signature on a copy of the note, but an email confirmation is also sufficient.

Correcting Invoice vs. Correction Note

What About KSeF? Important Changes from 2026

It’s also worth knowing that after the mandatory National e-Invoicing System (KSeF) comes into effect on April 1, 2026, the rules will change significantly.

• Moreover, correction notes will disappear. In KSeF, the only way to correct errors on structured e-invoices will be a correcting invoice issued by the seller.

This means that after KSeF is implemented, if you receive an invoice with an error, you will have to ask the seller to issue a correcting invoice.

Summary

In conclusion, remember this simple rule:

• Are you the seller and you made a mistake? Then you issue a correcting invoice.
• Are you the buyer and you received an invoice with a formal error? In that case, you can issue a correction note.

Knowing the difference between a correcting invoice vs a correction note allows for efficient document management. Therefore, remember these rules, and any mistake will be easy to fix.

Our next publication will provide more information on selling to the EU.