Investment Calculators

The usual mistake in investment calculators is applying one compounding rule to every product. Indian instruments do not share one. Bank FDs compound quarterly. RDs take monthly money but still compound quarterly. PPF compounds once a year and only counts money in by the 5th of the month. A SIP instalment goes in at the start of the period, not the end.

Each calculator here uses the convention its product uses. The differences are real money: quarterly rather than annual compounding is worth over ₹6,000 on a ₹5 lakh five-year FD, and the start-of-period assumption is why a correct SIP figure comes out slightly higher than most apps show.

FD, RD and PPF will produce the number on the page. A SIP will not, because the return is an assumption you typed in. The arithmetic is exact; the 12 percent is the part that carries the risk.