A voucher posted after the VAT return has been submitted is not automatically included in the submitted return. You can either include it in the next period, or reopen and correct the submitted VAT return.
Vouchers posted after the return has been submitted
If you post a voucher in a period where the VAT return has already been submitted, the amount will not automatically be included in the submitted return. You have two options:
Include it in the next period: Post the voucher in the next period (not in the one already submitted). It will then be included in the VAT return for the new period when you create and submit it.
Correct the submitted period: Reopen the VAT return and submit a corrected return for the period in question (see Correcting or reopening a submitted VAT return below).
Note: If the accounting period is locked, it must be unlocked before you can post vouchers in it. This is separate from the status of the VAT return. Period locking is managed under Administration → Accounting → General, in the Lock accounting period section (the Up to and including date field with the Change button).
Correcting or reopening a submitted VAT return
To change a VAT return that has already been sent to Altinn, go to Accounting → Submissions → VAT return and select the period. You then have two options:
Reopen period: Click Reopen period in the action list. The return goes back to the status Created, and you can make changes in the accounts and submit again.
Update VAT-return: Click the dropdown menu next to the action button and select Update VAT-return. A window opens where you can enter Additional info/explanation for deviations and control the Lock VAT report toggle. Click Update VAT-return to confirm.
The new submission replaces the previous one for the period at Altinn.
See also
When should you contact us?
Contact us in the chat if you can't reopen or submit the corrected return, or if Altinn returns an error. Provide the client, period and exact error message.
Questions about accounting treatment (e.g. whether to correct or take the discrepancy in the next period) should be directed to your accountant.