A Registrar and Transfer Agent (RTA) is a financial service provider appointed by companies and mutual funds to maintain investor records, process transactions, and support back-office operations on their behalf. They ensure accurate ownership tracking and administrative support between investors and issuers/AMCs. 
RTAs are registered with the Securities and Exchange Board of India (SEBI) and must comply with regulatory standards.

Core Functions of RTAs
RTAs perform several operational functions, including:
•    Investor Record Maintenance: Keeping detailed and updated information about investors and their holdings. 
•    Processing Transactions: Handling purchases, redemptions, transfers, switches (in mutual funds), and recording these accurately. 
•    Dividend & Corporate Action Administration: Ensuring dividends and other corporate benefits (like bonus shares or rights issues) are delivered to the correct investors. 
•    Customer Support & Reporting: Providing account statements, handling service requests, and sharing updates as per regulatory requirements.
•    Compliance & KYC: Verifying investor KYC details and meeting SEBI reporting needs. 
RTAs serve as a bridge between investors, AMCs (for mutual funds), and listed companies while keeping records transparent and consistent. 

Role of KFin (KFin Technologies)
•    KFin Technologies (KFintech) is one of the major RTAs in India, widely used by mutual fund companies for record keeping and transaction processing.
•    It provides technology-driven investor servicing, data management, and other back-office solutions, helping AMCs reduce operational workload.
(KFin’s services also extend to corporate registry and related solutions, but their core RTA role is around investor records and transaction administration.)

Role of Link Intime
•    Link Intime India (now part of MUFG Group) provides RTA services primarily for equity/shareholder registry work, including corporate actions, IPO application handling, allotments, and investor communications.
•    It manages investor applications in rights issues, buybacks, public issues, and other share registry services on behalf of listed companies.

Clarifying What RTAs Don’t Do
RTAs:
•    do not manage investment performance, NAVs, or share price movements. 
•    do not act as brokers, fund managers, or fiduciaries; their role is administrative and record-keeping.

Bottom Line
RTAs like KFin Technologies and Link Intime are SEBI-registered intermediaries that handle the critical operational and administrative work in capital markets. They ensure accurate investor records, process transactions (in mutual funds and equities), and manage corporate actions functioning behind the scenes to support seamless investment operations for both issuers and investors.