That is not possible, because the rounding amount must be posted to an appropriate account. Therefore, it must be a line item.
Is it possible to show total amount after added tax so that exact amount can round off under an new line item which will posted to an appropriate account.
That is not possible. Nor is it desirable. A purchase invoice should be entered to match your supplierās sales invoice. You would not arbitrarily round it off according to your own scheme. If the supplier rounds the sales invoice, you should match it. And there is no rounding expense to post to any āappropriate account.ā If a supplier rounds a sales invoice, that is effectively a price change, and the modified price is posted to whatever account the purchase is posted to.