Question 1

How is SIP maturity calculated?

Accepted Answer

This page uses the common India-style end-of-month SIP future value. Let P be the monthly investment, R the expected annual return in percent, and n the number of months (years × 12). Monthly rate i = (R/100) / 12. If i is about 0, FV = P × n. Otherwise FV = P × (((1+i)^n − 1) / i) × (1+i). Invested amount = P × n. Estimated returns = FV − invested.

Question 2

What does end-of-month SIP mean?

Accepted Answer

Each installment is treated as invested at the end of the month, so the formula multiplies by (1+i) after the annuity factor. That matches the SIP maturity many Indian mutual-fund calculators show. It is an estimate from a constant expected return — not a guarantee of fund performance.

Question 3

Can I switch tenure between years and months?

Accepted Answer

Yes. Use the Years or Months control next to the tenure box. Years becomes n = years × 12 (10 years is 120 months). Months uses the number as-is. The calculator does not rewrite the tenure box when you change units; 10 years and 10 months are different tenures. Recalculation runs live on input and unit change.

Question 4

Is anything uploaded?

Accepted Answer

No. Monthly investment, expected return, tenure, and the math run in your browser. Nothing is sent to ToolPetal.

SIP calculator