RD Calculator: Post Office & Bank Recurring Deposit
Estimate the maturity value of a recurring deposit at the post office or a bank, from your monthly deposit and the interest rate.
Researched by Mirza Seraj BaigFacts last checked against official sources on 13 September 2026Post office RD starts at ₹100 a month, in multiples of ₹10.
Post office RD rates are notified quarterly by the Ministry of Finance. Bank RD rates vary by bank and tenure.
The post office RD account runs for 5 years and can be extended.
Maturity amount
₹3,56,829
≈ 3.57 lakh
- Deposited
- 84%
- Interest
- 16%
- Total deposited
- ₹3,00,000
- Interest earned
- ₹56,829
- Number of deposits
- 60
Interest is compounded quarterly. Banks and the post office apply their own rounding at each step, so your actual maturity value may differ slightly from this estimate.
What is a recurring deposit?
A recurring deposit lets you save a fixed amount every month and get it back with interest at the end of the term. Deposits are monthly, but interest is compounded quarterly.
The post office National Savings Recurring Deposit runs for 5 years and starts at ₹100 a month, in multiples of ₹10. Bank recurring deposits are usually offered for anything from 6 months to 10 years.
How is RD calculated?
M = R × [(1 + i)^n − 1] ÷ [1 − (1 + i)^(−1/3)], where R is the monthly deposit, i is the quarterly interest rate (annual rate ÷ 400) and n is the number of quarters. This is the standard recurring deposit formula: deposits are monthly but interest is compounded quarterly. It reproduces the maturity value in the National Savings Recurring Deposit Scheme, 2019: ₹6,969.67 for ₹100 a month over 5 years at 5.8%.
RD calculation example: ₹5,000 a month for 5 years
Deposit ₹5,000 every month for 5 years — 60 deposits, ₹3,00,000 in all — at 6.7% a year, compounded quarterly. The deposit matures at ₹3,56,829, of which ₹56,829 is interest.
6.7% is the rate notified for the post office 5-year recurring deposit for 1 July to 30 September 2026. Rates are revised every quarter.
RD maturity table for different monthly deposits
Maturity value after 5 years at 6.7% a year, compounded quarterly.
| Monthly deposit | Total deposited | Maturity value | Interest earned |
|---|---|---|---|
| ₹500 | ₹30,000 | ₹35,683 | ₹5,683 |
| ₹1,000 | ₹60,000 | ₹71,366 | ₹11,366 |
| ₹2,000 | ₹1,20,000 | ₹1,42,732 | ₹22,732 |
| ₹5,000 | ₹3,00,000 | ₹3,56,829 | ₹56,829 |
| ₹10,000 | ₹6,00,000 | ₹7,13,658 | ₹1,13,658 |
| ₹25,000 | ₹15,00,000 | ₹17,84,146 | ₹2,84,146 |
Frequently asked questions
How is RD maturity calculated?
Deposits are made monthly but interest is compounded quarterly, using M = R × [(1 + i)^n − 1] ÷ [1 − (1 + i)^(−1/3)], where i is the quarterly rate and n the number of quarters. Each monthly deposit earns interest for the time remaining until maturity.
How long does a post office RD run?
The National Savings Recurring Deposit Account runs for 5 years, and can be extended. Bank recurring deposits are usually available for anything from 6 months to 10 years.
What is the minimum deposit for a post office RD?
The post office recurring deposit starts at ₹100 a month, with higher amounts in multiples of ₹10. There is no maximum limit.
Why does my bank statement show a slightly different amount?
Banks and the post office apply their own rounding at each compounding step and may treat part-months differently. A difference of a few rupees over a five-year deposit is normal.
What is the maturity value of a ₹2,000 a month RD for 5 years?
At 6.7% compounded quarterly, ₹2,000 a month for 5 years (₹1,20,000) matures at about ₹1,42,732.
How much interest does a ₹10,000 a month RD earn in 5 years?
At 6.7% compounded quarterly, about ₹1,13,658 on ₹6,00,000 of deposits, for a maturity value of ₹7,13,658.