Monthly SIP Calculator

What is a Monthly SIP and Why is it So Popular?

A Systematic Investment Plan, or SIP, is simply a method of investing a fixed sum of money into a mutual fund or stock portfolio at regular intervals—usually monthly—instead of putting in a lump sum all at once. It's the ultimate tool for building financial discipline and taking the guesswork out of investing.

With a SIP, you don't need to stress about whether the stock market is high or low. By investing the same amount every month, you automatically buy more mutual fund units when prices are low and fewer units when prices are high. This is called Rupee Cost Averaging, and it is the best way to lower your average investment cost over time.

How to Get the Most Out of Our Monthly SIP Calculator

Planning your future wealth is easy with our tool. Just type in your monthly SIP amount, the annual return rate you expect, and how many years you plan to stay invested. The calculator will instantly show your total invested capital, estimated earnings, and the final maturity value.

We've also added a step-up option. If you increase your monthly investment by just 10% every year as your salary increases, you'll be amazed at how much faster your wealth grows. This makes it a great tool for planning retirement, buying a home, or funding your children's education.

The Math Behind Monthly SIP Returns

SIP returns are calculated using the Future Value of an Annuity formula. Because payments are made at the start of each month, the formula is:

FV = P * [((1 + i)^n - 1) / i] * (1 + i)

In this formula, 'FV' is the final maturity value, 'P' is your monthly investment, 'i' is the monthly interest rate (annual return divided by 12 and then divided by 100), and 'n' is the total number of monthly payments.

For example, if you invest ₹5,000 every month at a 12% annual return for 10 years (120 months), the math shows a final balance of ₹11,61,695. Your total contribution is ₹6,00,000, meaning you earned ₹5,61,695 in compounding returns.

Why Starting Early Beats Everything Else

When it comes to compounding, time is your greatest leverage. Let's compare two friends, Raj and Amit, who both want to build a retirement corpus at age 60, assuming a 12% annual return.

Raj starts early at age 25. He sets up a monthly SIP of ₹5,000 and keeps it running for 35 years. His total out-of-pocket investment is ₹21 Lakhs, but his retirement corpus grows to a massive ₹3.25 Crores.

Amit waits until he turns 35 to start. To make up for lost time, he invests double the amount—₹10,000 monthly—for 25 years. His total investment is ₹30 Lakhs (more than Raj). Yet, at age 60, his corpus only reaches ₹1.90 Crores. Raj ends up with 1.7 times more money than Amit despite investing less, proving that time in the market is much more important than the amount you invest.