💡 As a customer, you are responsible for creating a new fiscal year each year in Douano.
Without an active fiscal year, you will not be able to issue invoices.
⇢ Go to Settings - Invoicing - Book years.
Click the green plus button
to create a new fiscal year.Click on an existing fiscal year to edit or close it.
Prefix: set the prefix to be used for sales invoices posted in this fiscal year, e.g. '2025' or '25'.
Number of digits for serial number: specify how many digits the invoice number should have, e.g. 0001. The first invoice number will then look like: 20250001.
Start date: the first day of the fiscal year.
End date: the last day of the fiscal year.
Closed: use this checkbox to close the fiscal year.
💡 Only close a fiscal year in Douano after it has been closed by your accountant.
💡 After closing, no more invoices can be posted in that fiscal year—this helps prevent mistakes by blocking further entries.
💡 Mollie & Closed Fiscal Years: Downloading Invoices
Do you use the Mollie integration for your payments? If so, you may find that you can’t download invoices from a fiscal year that has already been closed.
Why doesn’t this work? Behind the scenes, Mollie is more active than you might think. Every time you download an invoice, the system performs a small technical operation to generate or update the QR code and payment link on the invoice. Since a closed fiscal year is completely “locked” against any form of editing, this action is blocked.
The solution: To download the invoice anyway, you need to temporarily reopen the fiscal year:
Briefly set the relevant fiscal year back to the “Active” status.
Download the invoice (Mollie can now add the necessary data).
Then immediately set the fiscal year back to “Closed” to keep your records secure.