OneSaas can handle the payment of orders not only on Bank or Clearing Accounts (Cash or Card) but also on Expense accounts. For example you want some sales to be paid from a Promotion or a Credit account instead of a bank account.
Some scenarios when you want to pay from Expense accounts include:
On sales paid from Expense Accounts, OneSaas will generate a negative entry on the expense account when it calculates the summary. This will correctly express the cost in the Expense account:
$100 sale paid from an Expense: Marketing Promotions Account
The calculated summary has no payment but has a negative entry for the Expense account.