As per RBI Circular no.RBI/2013-14/457 DPSS.CO.EPPD No.1583/04.03.01/2013-14 dated 21st Jan 2014 regarding NEFT – Customer Service and Charges – Adherence to Procedural Guidelines and Circulars, following is mentioned:
"Ensure that in case of delayed credits or delayed returns, the penal interest as applicable is paid suo-moto to the customer without necessitating a request for the same by the customer"
What would be the rate of Penal Interest in such case and how to calculate the same.