SIP Calculator (Mutual-Fund Future Value)
See how a fixed monthly investment grows with compounding over time. Supports tenures down to the month.
Total: 180 months
Result
Maturity Value
₹50,45,760
Total Invested
₹18,00,000
Estimated Gains
₹32,45,760
Multiplier
2.80×
Invested vs Portfolio Value — year by year
The gap between the two lines is the power of compounding growing over time.
Concept
A Systematic Investment Plan (SIP) lets you invest a fixed amount at regular intervals — typically monthly — in a mutual fund. Each instalment buys units at the prevailing NAV, so you automatically acquire more units when prices are low and fewer when prices are high. This rupee-cost averaging smooths out market volatility over time.
The formula treats the SIP as an annuity-due, meaning each payment is made at the start of the period rather than at the end. That is why the standard annuity formula is multiplied by an extra (1+i) factor — every instalment earns one additional month of compounding compared with an ordinary annuity.
Time is the most powerful variable in the SIP formula. Doubling the monthly amount doubles the corpus, but doubling the duration multiplies it many times over because of compounding. Starting even a few years earlier can make a far larger difference than increasing the monthly amount later.
Formula
Variables
FV₹- Future value — the total corpus at the end of n months.
P₹- Monthly investment amount.
i- Monthly rate of return = Annual rate ÷ 12 ÷ 100.
n- Total months = (years × 12) + extra months.