Post Office RD Calculator

Calculate your Post Office Recurring Deposit maturity value.

Monthly Deposit

₹

100

Rate of Interest (p.a)

15%

Time Period

Yr.

10Y

The standard Post Office RD runs for 5 years and is extendable in blocks of 5. Rates are notified every quarter by the Finance Ministry.

Total Deposited

₹3,00,000

Interest Earned

₹56,829

Maturity Value

₹3,56,829

Deposited

Interest

What Is a Post Office RD Calculator?

A Post Office RD calculator estimates the maturity value of your Post Office Recurring Deposit account based on your monthly deposit amount, the tenure, and the current interest rate.

Unlike a bank RD, a Post Office RD is backed directly by the Government of India, which is a major reason it remains popular with conservative savers and in smaller towns without easy bank access.

Current Post Office RD Details

Interest rate: around 6.7% per annum, compounded quarterly. Rates are reviewed and notified every quarter by the Finance Ministry, so check the current rate before investing.
Tenure: 5 years, extendable in blocks of 5 years after maturity.
Minimum deposit: ₹100 per month, with no upper limit.
Premature closure: allowed after 3 years, at a lower savings-account-linked rate.
Loan facility: available after 1 year of regular deposits, up to 50% of the balance.

How the Maturity Amount Is Calculated

Post Office RD interest is compounded quarterly, which makes the formula more involved than simple interest:

M = R × [(1 + i)ⁿ − 1] ÷ [1 − (1 + i)^(−1/3)]

Here R is the monthly deposit, i is the annual rate divided by 4, and n is the number of quarters. The awkward −1/3 exponent exists because each of the 60 monthly deposits compounds for a different fraction of a quarter.

This is the convention India Post itself uses. The RD Scheme 2019 notification gives ₹100 a month for 5 years at 7.2% as ₹7,231.38, and this formula returns exactly that. A calculator that compounds monthly instead will not match your passbook.

Worked Example

A monthly deposit of ₹5,000 for 5 years at 6.7% per annum works out to a total deposit of ₹3,00,000, maturing at approximately ₹3,56,800. The roughly ₹56,800 difference is the interest earned.

Post Office RD vs Bank RD vs SIP

Feature	Post Office RD	Bank RD	Mutual Fund SIP
Returns	Fixed, government-backed	Fixed, bank-dependent	Market-linked, not guaranteed
Typical rate	Around 6.7% p.a.	Varies, often 6.5 to 7.5% p.a.	No fixed rate
Risk	Very low	Low, insured up to ₹5 lakh	Moderate to high
Liquidity	Premature closure after 3 years	Usually more flexible	Can redeem anytime

Key Takeaways

A Post Office RD calculator shows your maturity value from monthly deposits at the government-notified rate, compounded quarterly.
The current rate is around 6.7% per annum, revised quarterly, so it is worth checking before you commit.
Minimum deposit is just ₹100 a month over a 5-year tenure, making it accessible even for very small savers.
It offers guaranteed, government-backed returns, unlike a SIP, but typically lower long-term growth than equity-linked options.

FAQs

A default fee applies for each missed instalment, and the account can be discontinued if defaults continue for more than 4 consecutive months, though it can usually be revived within 2 months of the maturity date by paying the default fees.