NEFT:

NEFT refers to National Electronic Funds Transfer. It is an online system for transferring funds from one financial institution to another within India (usually banks). The system was launched in November 2005, and was set to inherit every bank that was assigned to the SEFT clearing system. It was made mandatory by the RBI for all banks on the SEFT system to migrate to NEFT by mid December 2005. As such, SEFT was discontinued as of January 2006. The RBI welcomed banks that were full members of the RTGS to join the NEFT system.

RTGS:

RTGS is an acronym that stands for Real Time Gross Settlement. RTGS is a funds transfer system where money is moved from one bank to another in ‘real-time’, and on gross basis. When using the banking method, RTGS is the fastest possible way to transfer money. ‘Real-time’ means that the payment transaction isn’t 

subject to any waiting period. The transaction will be completed as soon as the processing is done, and gross settlement means that the money transfer is completed on a one to one basis without clustering with another transaction. 

The transaction is treated as final and irrevocable as the money transfer occurs in the books of the RBI (Reserve Bank of India). This system is maintained by the RBI, and is available during working days for a given number of hours. Banks using RTGS need to have Core banking to be able to initiate RTGS transactions.