What this calculation tells you
A recurring deposit builds a balance with repeated contributions. Each deposit has a different amount of time to earn interest: the first stays invested longest and the last for the shortest time.
This estimator converts a quarterly nominal rate into an equivalent monthly rate and places each deposit at the beginning of its month. That makes the timing explicit rather than presenting the number as an exact bank quote. Check a provider’s deposit schedule for the contractual maturity.
The method, explained
Monthly-equivalent rate i = (1 + annual rate ÷ 400)^(1/3) − 1 Maturity = deposit × [(1 + i)^n − 1] ÷ i × (1 + i)
The inputs use the units printed beside each field. Values shown in result cards are rounded for readability; the calculator keeps more precision while applying the formula.
A worked example
Monthly deposit: ₹5,000.00 · Annual nominal rate: 7 % · Deposit tenure: 24 months.
Estimated maturity amount: ₹1,29,098.90
This example uses the inputs above. Your result changes when you change them.
Assumptions & limitations
- All deposits are equal and paid on time at the beginning of the month.
- The quarterly-equivalent monthly model is an approximation, not a provider-specific RD formula.
- Tax, delays, penalties and bank-specific rounding are excluded.
Questions about this tool
Why not calculate interest on all deposits for the full tenure?
Later deposits have less time to earn interest. Treating them all as day-one deposits would overstate the maturity.
What happens at zero interest?
Maturity is simply monthly deposit multiplied by the number of months.
Context checked 30 September 2026. External sources do not endorse this tool.
Published by Sanu Tech Innovation LLP · Model notes updated 30 September 2026. Read our calculation standards or report a reproducible issue.