1. Login to OptyERP & Go to Home

2. Click on 'Settings'

3. Click on 'Tax Rates'

4. Click on 'Add'

5. Enter 'Tax Name'

6. Enter 'Tax Rate %'

7. Check 'Tax Group Only'

You can select this checkbox if you are updating this tax as part of the Tax group. If checked, this tax will not be displayed individually in dropdowns; it can only be added in tax groups.

8. Click on 'Save'