Find how long a Kisan Vikas Patra takes to double your money at the interest rate you enter.
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Calculated from your inputs
Maturity amount
Approximate term to double
Interest earned
How this is calculated
Kisan Vikas Patra doubles the deposit. The term shown is the time to double at the entered rate compounded yearly, to the nearest month; India Post notifies the actual term for each rate.
Defaults are editable examples, not current provider quotes. Results are rounded for display. These are scenarios from your inputs, not live market data or investment advice.
Kisan Vikas Patra (KVP) is a post office certificate that doubles the amount invested. Instead of a fixed term, the government notifies the number of months it takes to double at the current rate.
How the KVP calculator works
Months to double = ln 2 ÷ ln(1 + r) × 12
The calculator finds the time to double at the rate you enter with yearly compounding, rounded to the nearest month. India Post publishes the exact term for each rate.
Worked example
Example inputs
Investment amount
₹1,00,000
Assumed annual rate
7.5%
Calculated result
Maturity amount
₹2,00,000
Approximate term to double
115 months
Interest earned
₹1,00,000
Why use a KVP calculator?
Check how long a certificate bought today takes to mature.
Compare KVP with other fixed-income options over the same period.
KVP calculator FAQs
What is the minimum investment in KVP?
₹1,000, in multiples of ₹100, with no upper limit. Check India Post for the current rules.
Can I withdraw KVP early?
After a lock-in of two and a half years, at the value the scheme’s table gives, or earlier in specific cases such as the holder’s death.
Is KVP interest taxable?
Yes. The interest is taxable, and the investment does not qualify for a tax deduction.
Does the term change after purchase?
No. The term applicable on the day you buy stays fixed for that certificate.