Step 2:- Navigate to Masters -> Tax Master.
Step 3:- Select a drop down option shown in the picture and click on CREATE NEW option to create a new tax rule.
Step 4:- Type the rule name.
Step 5:- Select a price range if a floating tax is applicable.
Step 6:- Select the GST value % (for example if your tax rate is 12% then select GST value as 12% ) and give 0 in CESS
Step 7:- Click on SUBMIT.
Step 8:- To update the tax rate according to a category, click on SET TAX RULE option.
Step 10:- Select the respective tax rule for the categories.