How the money doubles
A certificate bought at 7.5% doubles in 115 months. That is 9 years and 7 months. It applies to an account opened on or after 1 April 2023. The smallest amount is ₹1,000.
7.5% is the current Kisan Vikas Patra rate for 1 October 2026 to 31 December 2026. It is on the small-savings card. The yearly rate that turns money into an exact double in 115 months is 7.5008%. Compounding 7.5% once a year over those months does not land on an exact double, so this page uses the 115-month rule for the maturity amount. If you move the rate off the card, the doubling promise and the table no longer apply. The figure is then only a yearly compound.