DATEV Export
With the DATEV Export addon, you download a month's invoices as a file in the DATEV posting batch format. You pass the file on to your tax advisor.
Requirements for the DATEV export
- The DATEV Export addon, activated in the Addon Store.
- The Invoicing System addon. The DATEV export sits in the Invoices area and exports the invoices Bookicorn has created. Without invoices, the file is empty.
The page is only visible to owners and administrators.
Set up the DATEV export
- Open Manager → Invoices → DATEV Export: app.bookicorn.net/datev.
- Under DATEV access data, enter the Advisor number and the Client number. You get these numbers from your tax advisor.
- Choose the Chart of accounts: SKR03 (Standard for service providers) or SKR04 (Industry).
- Under Posting accounts, check the accounts for Revenue 19% VAT, Revenue 7% VAT and Bank / Stripe income. The SKR03 values 8400, 8300 and 1200 are prefilled. Only change them if your tax advisor uses different accounts.
- Tap Save.
Export a month
- Under Export posting batch, choose the Month and the Year.
- Tap Download CSV.
The file is called, for example, EXTF_Buchungsstapel_2026_09.csv. It uses the Windows-1252 character set and is separated by semicolons, as DATEV requires for the import.
What's in the file
- Every invoice whose invoice date falls in the selected month, as a separate posting with invoice number, date and amount.
- Every cancellation invoice of the month as a reverse posting.
- The Stripe fee for every invoice paid through Stripe, as a separate posting with the posting text "Stripe-Gebühr" (always in German, as the file is for German accounting) and the invoice number.
What counts is the invoice date, not the date of the session or the payment. Purchases without an invoice, for example bookings with credits, aren't in the file, because the invoice for them was created when the prepaid card was bought.
Frequently asked questions
Why is my DATEV file empty? There are no invoices in the selected month. Check whether the Invoicing System is active and a default invoice issuer is set up, and whether you chose the right month.
Can I export a whole period at once? No. You always export one month. For several months, you download several files.
Are payments on site in the file too? Yes, as long as there's an invoice for them. The DATEV export is based on the invoices, not on the payment method.
Where do I get the advisor number and client number? From your tax advisor.