How to backdate a document

Legally, you cannot issue documents of the same type and document set with dates earlier than the last document issued (even if it has been cancelled).

If you wish to generate a document of the same type (Invoice, Receipt, Credit Note) with a date prior to the last document issued, the solution is to create a new document set or use a set that has not been used recently.

Note:

In Moloni ON, tax-relevant documents (debit/sales documents, credits, transport documents, and receipts) can only be backdated by a maximum of 45 days. Regarding documents such as purchases, migrated balances, or others, there is no limit or date control.

Follow these steps:

1. In this example, the last invoice in document set A was issued on 17/02/2026.

How to issue a document with an earlier date 1

If you attempt to issue a new invoice in that set with an earlier date, a warning will appear indicating that the date must be equal to or later than the date of the last invoice, which in this case is 17/02/2026.

How to issue a document with an earlier date 2

2. The solution is to create a new set and issue the documents with the desired date, or use a set that has not been used recently. To learn how to create a document set, please consult this guide.

How to issue a document with an earlier date 3

3. Issue a new invoice using the new set and choose a date prior to 17/02/2026.

How to issue a document with an earlier date 4

The document has been created successfully.