If the round-off amount is being calculated incorrectly, follow these steps.
Step 1. If you have enabled the auto round-off option, go to Administration, select Configuration, and click on Voucher Series Configuration.
Step 2. Choose the Voucher Type, click on the Series, and then select Voucher Configuration.
Step 3. Click on 'Configure Auto Round Off Final Amount' and check the bill sundry settings in 'Bill Sundry (Upper),' 'Bill Sundry (Lower),' and 'Round Off Nearest To,' i.e., if you select '1,' it will round off under Step 1.
Step 4. If you are facing round-off issues in TDS/TCS, go to Administration, select Configuration, and click on Features & Options.
Step 5. Then click on TDS/TCS, select the 'Amount Round Off' options, and check your selection.