The Reserve Bank had, in June 2015, set the last date for public to exchange pre-2005 banknotes notes as December 31, 2015.
"RBI, on a review, decided to extend the date for the public to exchange their pre-2005 banknotes till June 30, 2016," it said in a statement.
However, RBI added that from January 1, 2016, such facility will only be available at identified bank branches and Issue Offices of the Reserve Bank.
Over 164 crore pre-2005 currency notes of various denominations, including of Rs 1,000 were shredded in regional offices of Reserve Bank in 13-month period ending January, as per official data.
The face value of the shredded currency notes was around Rs 21,750 crore.
As many as 86.87 crore pieces of Rs 100, 56.19 crore pieces of Rs 500 and 21.75 crore pieces of Rs 1,000 were shredded.