voluntarily GST registration

Kartik (Student) (99 Points)

24 September 2018  
If a person having annual turnover of 2 lakh takes GSTN number voluntarily
Then
1.) Will he need to file GST return on continuous basis even if his turnover is very low than threshold limit of 20 lakh?

2.)will he need to comply with GST like issuing receipts to customers by charging GST as he has never issued receipts for his sales to customers as his annual turnover is very low?