Below 1.5 crore regular

1. From October you ll be file your GSTR 1 2 and 3 returns as Quarterly return.... (In my view it's just confusing at the time of filing if you have huge no of bills)

2. You can pay your Tax liability Quarterly from October.

3. You don't want pay tax on advance receipts..

sir my gstn number is 22 August-2017 regular my turnover Lass then 1.5 CR can I have quarterly file return(July to sep)?

@ Vikrant Saini...

You can file your GSTR returns Quarterly from October to December 2017....

But,
I'm not exactly return module of July - September returns as Monthly or Quarterly...

In my view, it's monthly returns. So, you ll be file your August* and September returns for monthly...
GSTR 1 is available Upto 31st March...
Wait on further notifications for GSTR 2 and 3 returns...

GOOD LUCK