The Receivable Accounts view of the Currency Information window enables you to select the linked accounts you want to use when recording sales-related transactions in the selected currency.
This window is available only if you have selected the I Deal in Multiple Currencies option in the System view of the Preferences window.
If you give discounts to customers who make early payments, select this option and then select the account you want to use to track the discounts you give in the
Expense or Cost of Sales Account for Discounts field.
If you charge customers who use the selected currency a fee for making payments later than their payment terms allow, select this option and then select the account you want to use to track finance charges you receive in the
Income Account for Late Charges field.