Issuing a credit note from an invoice

A corrective tax document is used to fix errors on an invoice that has already been issued and recorded, without the need to delete the original document. It is issued, for example, when an incorrect amount, VAT rate, or date is stated, or when the terms of the transaction change afterward—typically due to returned goods, a discount, or a complaint. In this guide, we will simply explain how to issue a corrective tax document in MyInvoiceOnline.
Where can I find the option to issue a credit note and how to do it?
Go to the Invoices section
Click on the specific VAT invoice you want to amend
Upon opening it, you'll find the Credit Note button on the top right-hand side

Clicking on the Credit Note button opens a pre-filled form titled Creation of a correction document
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In the Invoice section, fill in the Reason for issue – this field is mandatory, and the document cannot be saved without it
If you are correcting the entire invoice, leave everything as it is. If you only need to amend specific items or amounts, you can adjust them manually. Items will display as negative values

Note: will be automatically pre-filled as Credit note for invoice no. XY (the number will be filled in automatically)
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Then simply choose whether you wish to:
Save, Save and send, Save and download
Where can I find the issued credit note?
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In the Invoices Issued overview, the new document will appear as linked – you’ll notice its association with the original invoice through graphic differentiation

When you click on the credit note, you will see the invoice it relates to in the Related Documents section on the right-hand side, and vice versa (in the original invoice you will see the credit note)

No more manual rewriting – items are loaded automatically, the document is issued in full compliance with legislation, quickly, simply, and without errors. Moreover, you can choose whether to amend the entire invoice or only part of it – exactly as you need.