As per the latest changes, the monthly tax returns of businesses giving summary of all transactions in form GSTR 3B will be automatically populated from the details given in the sales returns of the company as well as that of all its suppliers filed earlier in the month in form GSTR 1. These changes would be effective from 1st January 2021. For small businesses that file returns on a quarterly basis, this would come into effect from 1st April next year.
Source: a2ztaxcorp.com
