Sometimes it is necessary to round the total amount of the bill. Cash rounding enables you to round off the cost during installments. Odoo 15 provides the feature of cash rounding in the Accounting module. You can enable the Cash Rounding option from the Settings. This will allow you to define the smallest coinage of the currency used to pay by cash.
By selecting the Cash Rounding option you can view the existing configured cash rounding with details such as Rounding Precision and Rounding Method mentioned.