Dear Saurabh
1- Services provided by an educational institution is exempted. (Mega Exemption -Notification Number ST-25/2012 dated 20th June 2012)
2- Under GST, “educational institution” is defined as an institution providing services by way of:
- Pre-school education and education up to higher secondary school or equivalent;
- Education as a part of a curriculum for obtaining a qualification recognized by any law for the time being in force;
- Education as a part of an approved vocational education course;
3- Conclusion :
Online education services not fall under the definition of educational institution. Hence, they are taxable at 18% GST rate.
If They provide service to person outside India, Place of service would be the location of the recipient of service and it will be fall under export service. Hence, they are taxable at 0% GST rate.