After the introduction of GST, clients ask GST number on the invoice sent to me. Although I have a valid PAN, I don't have a GST number. Do I need to register one? Or can I leave it blank as I write post for brands only on rare basis? Please guide with details. Thank you in advance.
PS: After a long time and I cannot find a topic on GST in the forum and if I missed the link somewhere, plz help