There is one saying in financial world that

"Before doing investment one should know it's past so that one can estimate it's future" .

Same thing applies to PPF too. Before we do investment in PPF, we must have brief knowledge of it current rate of interest and how in the past it's rate of interest have changed. PPF scheme was started by government of india in 1968 with rate of interest being 4.8%. PPF rates have seen many up and downs such as in 1999-2000 it's rates are sky high 12%, while in beginning it was just 4.8%. 

Below table provides all interest rate history starting from 1968 to present financial year.


Year Rate of Interest
From 1 July 2019 to 31 December 2019 7.9%
From 1 October 2018 to 30 June 2019 8.0%
From 1 January 2018 to 31 September 2018 7.6%
From 1 July 2017 to 31 December 2017 7.8%
From 1 April 2017 to 30 June 2017 7.9%
From 1 October 2016 to 31 March 2017 8.0%
From 1 April 2016 to 30 September 2016 8.1%
From 1 April 2013 to 31 March 2016 8.7%
From 1 April 2012 to 31 March 2013 8.8%
From 1 December 2011 to 31 March 2012 8.6%
From 1 March 2003 to 30 November 2011 8%
From 1 March 2002 to 28 February 2003 9%
From 1 March 2001 to 28 February 2002 9.5%
From 15 January 2000 to 28 February 2001 11%
From 1 April 1999 to 14 January 2000 12%
From 1 April 1986 to 31 March 1999 12%
1985-86 10%
1984-85 9.5%
1983-84 9%
1982-83 8.5%
1981-82 8.5%
1980-81 8%
1979-80 7.5%
1978-79 7.5%
1977-78 7.5%
1976-77 7%
1975-76 7%
From 1.8.1974 to 31.3.1975 7%
From 1.4.1974 to 31.7.1974 5.8%
1973-74 5.3%
1972-73 5%
1971-72 5%
1970-71 5%
1969-70 4.8%
1968-69 4.8%

Hope this formatted data regarding ppf interest rate helps you. Thanks.