GSTR-2A is an auto-populated return on GST Portal that contains details of input tax credit on purchases, TDS credits and TCS credits of a buyer.

GSTR-2A will be auto-populated from data uploaded by seller in the following returns

GST ReturnNature of Seller
GSTR-1Regular Dealer
GSTR-5Non-Resident Tax Payer (NRTP)
GSTR-6Input Service Distributor (ISD)
GSTR-7TDS Deductor
GSTR-8TCS Collector i.e. E-Commerce Operator

Read more - GSTR-2A : View or Download on GST Portal