Threshold limit in gst

Gkannan (manager) (77 Points)

02 August 2017  

Dear experts,

The threshold limit for GST is 20 lakhs for a business. suppose if  a trader estimates that his business will not cross 20 lakhs and did not register under GST however if he crosses 20 lakhs during the last 3 months of the year whether he will raise GST invoices only for the last three months??? 

Please clarify