Login to Back Office > from the left menu go to ‘Settings’ > click on  ‘Tax Settings’ in the submenu of ‘Settings’ > select shop from ‘Select Store’ option > enable the option ‘My shop has single HSN/SAC’( single tax) (i.e.

) > select country in drop-down option at ‘Type or select country’ > select ‘Tax Class’ as per Shop Type in the dropdown, select ‘Tax code Type’ (eg. SAC), enter ‘SAC code’ (Eg. Code – 996331 for 5 % Tax) as the last step click on the ‘Save Settings’ button at the top right of the page.