Plan your savings with precision. Compute maturity amount, total interest earned, and effective annual yield for any recurring deposit. Visualize your investment growth month by month.
A Recurring Deposit (RD) is a popular savings instrument offered by banks and financial institutions, particularly in South Asia. It allows individuals to deposit a fixed amount every month for a predetermined tenure, earning compound interest on the accumulating balance. The RD is ideal for salaried individuals, small savers, and anyone looking to build a disciplined savings habit with a guaranteed return.
Maturity Amount (M) = P × ((1 + r/n)n·t − 1) / ((1 + r/n)n/12 − 1)
where P = monthly deposit, r = annual interest rate, n = compounding periods per year, t = tenure in years.
The RD maturity formula is derived from the future value of an annuity with compounding. Each monthly deposit earns interest for the remaining tenure, and the total maturity is the sum of the compounded values of all deposits. The formula used in this calculator is the standard RD maturity formula employed by banks:
M = P × [ ((1 + r/n)n·t − 1) / ((1 + r/n)n/12 − 1) ]
Here, P is the monthly deposit, r is the annual interest rate (as a decimal), n is the number of compounding periods per year, and t is the tenure in years. The denominator accounts for the fact that deposits are made monthly rather than at the beginning or end of the year. This formula assumes that deposits are made at the end of each month (ordinary annuity).
For example, if you deposit $500 monthly at 7.5% p.a. compounded annually for 5 years, the maturity amount works out to approximately $36,500. The total interest earned is the difference between the maturity amount and the total principal invested ($30,000), which is about $6,500. This calculator computes these figures instantly and also shows a month‑by‑month growth trajectory.
| Instrument | Risk | Returns | Liquidity | Best For |
|---|---|---|---|---|
| Recurring Deposit | Very Low | Fixed (3–9% p.a.) | Low (penalty on premature withdrawal) | Disciplined monthly savers |
| Fixed Deposit (FD) | Very Low | Fixed (3–9% p.a.) | Low | Lump‑sum investors |
| Mutual Funds (Debt) | Low–Moderate | Variable (4–10% p.a.) | High | Moderate risk tolerance |
| Equity Mutual Funds | High | Variable (10–15% p.a. long‑term) | High | Long‑term wealth creation |
| Public Provident Fund (PPF) | Very Low | Fixed (7–8% p.a.) | Very Low (15‑yr lock‑in) | Retirement / tax savings |
Mr. and Mrs. Patel want to accumulate $15,000 for their daughter's college expenses in 7 years. They plan to open an RD account with a bank offering 7.8% p.a. compounded quarterly. Using this calculator, they determine that a monthly deposit of approximately $148 will be required. They can adjust the amount based on their monthly budget. The calculator shows the total interest earned ($2,568) and the inflation‑adjusted value (at 3% inflation) to ensure their savings maintain purchasing power. This gives them confidence in their savings plan and helps them track progress.