Case study
Meridian
Bookkeeping automation for German businesses that sell directly through Mollie. Payments go in, finished DATEV batches come out.
The problem
I sell digital products through Mollie myself, and every month-end ran the same way: pull the CSV, match fees one by one, separate payouts from payments, look up the VAT rate for every EU country. Then the file came back from the accountant because a booking key was missing.
The DATEV export in the Mollie dashboard books everything against one collective debtor, with no VAT, no OSS split and no invoices. The usual integrations expect a shop system or a billing tool as the revenue source and charge per document on top. If you sell straight through Mollie, you fall between them.
What I built
Three booking batches a month
Revenue, payments and payouts as EXTF files that import into DATEV as they are. Mollie fees are booked separately as reverse charge.
OSS split by card country
The card-issuing country decides the tax treatment: domestic 19 percent, EU OSS per country, non-EU kept apart, with the evidence Art. 24b of the VAT Implementing Regulation asks for.
An invoice for every payment
Each payment gets a § 14 UStG invoice as a PDF. Refunds are booked as a general reversal on the refund date, with a linked credit note.
Receipts already attached
A GUID link in the batch plus document.xml in the receipts package, so every booking arrives in DATEV Unternehmen online with its PDF on it. The tax firm has one job left: importing.