This article explains how to configure rounding taxes and also total sales. If you make a transaction with the nominal sales that have a commas.
Step 1. Select Application on Setup Menu
Step 2. Tab Math than find Rounding Digit and insert your Rounding for Sales and Tax
Number Properties Index
Rounds up to 1 decimal point
To round 2 numbers after the decimal point
For rounding 1 point in front of the comma
for rounding 2 points in front of the comma
Step 3. After completing adjust it back to Sell, your sales will automatically be rounded up
For example here we are using Sales Rounding '1' which is to round up the total sales to 1 digit after the comma.