gst on export services

Thanks!We are market research service provider and giving services to International client who are from USA,UK,China,South Korea etc.Request you to let me know is there any GST liablity on servics while billing to them or giving quotation to them..

earlier it was not there when service tax was applicable.Looking forward to hear from you..Thanks

I have also a similar type of business. Please let me know how to file GSTR 1.

I have clients from China, USA, UK, and India too. For the overseas client we don't charge GST, but for Indian clients we charge GST @ 18%. So let me know your views.

Is there any invoice format for overseas client?