"REER index constructed using a CPI for both India and trade partner countries would ensure a higher degree of comparability of former's international competitiveness vis--vis trading partner countries," the RBI said in a release.
REER indicates movements in exchange rates of the home currency against a basket of currencies of trade partner countries and is considered to be an indicator of international competitiveness.
Since October 2013, the RBI has started providing indicative projections of inflation in terms of the broader CPI-Combined.
"Thus, with greater focus on CPI inflation as primary objective of domestic monetary policy, it is pertinent to have an alternative index of REER based on CPI," RBI said.
Till now, in the case of India, the RBI was providing the REER index using the Wholesale Price Index (WPI) for India and CPI for partner countries. The RBI released a monthly series on CPI-based REER for both six-currency and 36-currency baskets for April 2004 to March 2014.