Formula, example, assumptions, and FAQs — open any section for the detail.
Worked example
Example: ₹5,000 per month for 5 years at 7%, quarterly
A saver deposits ₹5,000 every month into an RD at 7% annual interest for 5 years, compounded quarterly, with no senior citizen add-on.
Calculation:There are 60 monthly deposits totalling ₹3,00,000. Using a monthly rate of (1 + 0.07 ÷ 4)^(4 ÷ 12) − 1 ≈ 0.58%, the balance built month by month reaches about ₹3,59,640. Interest = ₹3,59,640 − ₹3,00,000 ≈ ₹59,640.
Result:The RD matures at about ₹3,59,640, of which roughly ₹59,640 is interest on ₹3,00,000 deposited. The effective annual yield is about 7.19%. This is before any TDS or income tax.
Accuracy notes
The maturity is built month by month using an effective monthly rate derived from the chosen compounding frequency, and is rounded to whole rupees. Actual bank figures can differ because of day-count conventions, rounding, interest-crediting rules, and instalment timing. TDS, tax, missed-instalment penalties, and premature closure are not included.