💡 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.