SIP Calculator

Investment Details

₹500₹5.00 L
1.0%40.0%
1 Yr40 Yr
Monthly rate used: 0.9489%— compound-converted
Maturity Amount₹56,00,897
Total invested₹30.00 L
Est. returns₹26.01 L
Total value₹56.01 L
Invested54%
Total invested
Est. returns
Invested 54%Returns 46%

What is a SIP?

SIP (Systematic Investment Plan) is a methodology of investing a fixed amount of money at regular intervals in a mutual fund scheme. SIP allows you to build wealth over the long term by investing regularly without attempting to time the market.

By investing a fixed amount monthly, you buy more mutual fund units when the NAV (price) is low, and fewer units when the NAV is high. This process averages out the purchase cost over time, a concept known as Rupee Cost Averaging.

How the SIP calculator works

Most online calculators approximate returns by dividing the annual interest rate by 12. This calculator uses the precise, mathematically correct compound conversion formula:

M = P × [((1 + i)^n − 1) / i] × (1 + i)

Where:

MMaturity Amount

Total corpus accumulated

PMonthly SIP

Instalment paid each month

iMonthly Rate

Derived as (1 + r)^(1/12) - 1

nTotal Months

Tenure in years multiplied by 12

The correct monthly rate calculation represents how mutual funds actually compile returns in the Indian market, ensuring your projections align closely with real-world statements.

Types of SIPs in India

Regular SIP

Invests the exact same amount on a fixed date every month. The simplest and most popular option.

Step-up / Top-up SIP

Automatically increases your monthly contribution by a set percentage or amount every year. Highly effective for aligning investments with annual salary hikes.

Flexi SIP

Allows you to adjust the monthly investment amount depending on your financial cash flows or market conditions.

Perpetual SIP

Has no fixed end date, continuing automatically until the investor requests a cancellation.

Frequently asked questions

The formula is M = P x [((1 + i)^n - 1) / i] x (1 + i). P is your monthly SIP, n is the number of months, and i is the monthly interest rate. Most calculators get i by dividing the annual rate by 12. That's an approximation. We use i = (1 + r)^(1/12) - 1, which is mathematically correct. At 12% annually, the difference is 0.9489% vs 1.000% per month. Small, but it compounds significantly over 15-20 years.
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SIP Calculator — Calculate SIP Returns & Maturity Amount | Fermor