As a financial institution, we - of course - want to calculate costs as accurately as possible. However, because of costs like VAT, variable costs and fixed costs (with more than 2 decimals) amounts need to be rounded. Because this rounding happens during the month per transaction and at the end of the month over all transactions, it could happen that a small rounding difference occurs.
How does this rounding work?
As soon as you receive a transaction, the fee you have to pay to us will be calculated automatically. These so called ‘prepayments’ will be rounded up, to make sure you don’t have to pay any extra money when your invoice is generated. This makes it simpler and more easy to use for the merchant. When we generate the invoice, we will round down if the last digit in a value is below 5. The difference between these two calculations - and what you possibly paid too much - will automatically be settled back to your balance in your Mollie account and will be included in the next settlement. You don't have to worry about this.