Creating or Adding Indian Currency in Opencart is really simple. Just follow the steps below it will hardly take 2-3 minutes.
For Adding Indian Currency INR (Rupee)
Creating Currency INR in Opencart
System > Localisation > currencies
Currency Title – Indian Rupee
Code – INR
Symbol Left – Rs.
Value as 1.00000000
Status – enabled
Remember if you to make INR Default currency then use value 1.00000000
Setting INR as Default Currency in Opencart
Now Set INR as default default currency … Go to
System > Settings > Local (Tab)
change Country, Region / State, Currency
I think its very simple, this was succesfully tested on Open Cart 2.X.,3.X, if you have any problem then let me know through comments, I will try solve you queries .