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How to link a document to a locked VAT period?

Written by: Valesca Wilms

Updated on: May 7, 2026

Reading time: 2 minutes

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Why is the VAT period not selectable in a revenue or expense?

After submitting a VAT return, the app will lock the VAT period for editing, so it's not possible to make changes (new documents will be reported into the next VAT declaration).

It may happen that the current quarter is marked as submitted and paid by mistake. While adding an expense to the current quarter, you will see the following message:

How can you unlock the situation?

Simply mark the VAT period as “not done" in order to open the quarter again.

You need to go to the Taxes screen, click on the quarter concerned :

  • VAT submission > click on "Mark as not submitted"

  • VAT Payment > click on "Mark as not paid".

After that, you'll be able to add a revenue or expense to the current quarter.

From the App:

From the web:

⚠️ warning: If you change the status of a previous quarter, this can only be done if you need to submit a VAT correction. More info in this article. Don't hesitate to contact us for any assistance

Valesca Wilms

Author - Valesca Wilms

As content marketing lead at Accountable Belgium, Valesca writes about freelancing, self-employment, and taxes based on her own experience as a freelancer.

Who is Valesca ?

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