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Booking of Mollie Transactions

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This article explains how to optimize the automatic allocation of payments when Mollie directly withholds transaction fees, and how to automate your accounting process with DATEV.

Automation Challenges Due to Fee Deduction

Payment service providers like Mollie pay out transaction amounts "net." This means that the fees incurred are directly deducted from the customer's payment amount before the payout is made to your bank account.

A classic example:

You create an invoice for €100.00.
Mollie withholds €2.00 in fees.
Only €98.00 is paid out to you.


Without a structured booking method, your system (e.g., DATEV) will not find a matching invoice for the payment receipt of €95.00. This results in manual search effort, discrepancies on the accounts receivable account, and errors in reconciliation.
 

To achieve full automation, three components must work together in your workflow:

Accounts Receivable Accounting

Mollie DATEV Data Service

Mollie DATEV Data Service

Every invoice created in easybill should be posted in DATEV to an individual accounts receivable account (customer account). This ensures that the receivable is recorded correctly in the system in full (in the example, €100.00). 

The Mollie DATEV Data Service (DATEV Connector) acts as an intelligent interface between your Mollie account and DATEV. It performs the two most important tasks:

  • Automatic Data Import: All transaction data (payments, refunds, and fees) are transferred directly to DATEV.

  • Automatic Matching: The service enables DATEV to assign both the payment receipt (€98.00) and the withheld fee (€2.00) to the original receivable (€100.00) and to fully automatically reconcile them.

For the data service to work optimally, Mollie must be managed technically in DATEV as a bank account (financial account). Payment flows and fees are treated like account movements and posted directly against the accounts receivable.

Why the Change Is Worthwhile

  • Full Automation: The manual allocation of partial amounts or collective transfers is completely eliminated.

  • Legal Certainty: Future requirements for detailed breakdowns of fees (e.g., by taxability) are met.

  • E-Invoice Ready: Switching to accounts receivable processes is an important step toward compatibility with upcoming legal standards for electronic invoice exchange.

Checklist for Implementation (with Your Tax Advisor)

Go through the following points together with your tax advisor to set up the process:

  • [ ] Activation: Is the Mollie DATEV Data Service correctly configured and authorized in the Mollie dashboard?

  • [ ] Master Data: Are consistent accounts receivable numbers stored in easybill and DATEV to ensure proper allocation?

  • [ ] Financial Account: Has Mollie been set up in DATEV as a "bank" (payment method) with its own general ledger account?

  • [ ] Booking Logic: Is the tax office informed that the fee settlement is done via the data service?

Download for Your Tax Office

To enable your tax advisor to quickly implement the technical details, we have prepared a handout. Simply forward this document directly to your tax office:

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