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SIP Calculator Guide

Understanding Systematic Investment Plans — A Beginner's Guide

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What is a SIP?

A Systematic Investment Plan (SIP) allows you to invest a fixed amount regularly (monthly/weekly) in mutual funds. Instead of investing a lump sum, you spread your investment over time, reducing the impact of market volatility.

Think of SIP as a recurring deposit, but for mutual funds with potentially higher returns.

How SIP Works

  1. Choose a mutual fund — Select based on your goals (equity for long-term growth, debt for stability)
  2. Set your amount — Decide how much to invest monthly (start with as low as ₹500)
  3. Select frequency — Monthly is most common, but weekly/daily options exist
  4. Auto-debit setup — Money is automatically debited from your bank account
  5. Units allocated — Based on the fund's NAV (Net Asset Value) that day
  6. Stay invested — Let compounding work its magic over years

The SIP Formula

M = P × ({[1 + i]^n – 1} / i) × (1 + i)
M = Maturity amount (final corpus)
P = Monthly investment amount
i = Monthly rate of return (annual rate ÷ 12 ÷ 100)
n = Number of months

Example Calculation

Monthly SIP Amount (P) ₹10,000
Investment Period 10 years (120 months)
Expected Annual Return 12%
Total Amount Invested ₹12,00,000
Estimated Returns ₹11,23,391
Total Corpus ₹23,23,391

Power of Compounding: Time Matters

The table below shows how ₹10,000/month grows at 12% annual returns:

Duration Amount Invested Est. Returns Total Corpus
5 years ₹6,00,000 ₹2,24,000 ₹8,24,000
10 years ₹12,00,000 ₹11,23,391 ₹23,23,391
15 years ₹18,00,000 ₹32,43,776 ₹50,43,776
20 years ₹24,00,000 ₹75,91,479 ₹99,91,479
25 years ₹30,00,000 ₹1,59,76,415 ₹1,89,76,415

*Returns are illustrative. Actual returns may vary based on market conditions.

Benefits of SIP

Rupee Cost Averaging

Buy more units when prices are low, fewer when high. Averages out your purchase cost over time.

Power of Compounding

Your returns earn returns. The longer you stay invested, the more exponential the growth.

Disciplined Investing

Automates savings habit. No need to time the market or make emotional decisions.

Start Small

Begin with as low as ₹500/month. Increase gradually as your income grows.

Pro Tip: Step-Up SIP

Increase your SIP amount by 10% every year. If you start with ₹10,000 and increase 10% annually, your 20-year corpus grows from ₹99L to ₹1.7 Cr!

Your SIP Calculator

How much can you invest monthly?
Longer = better (aim for 10+ years)
Conservative: 10% | Moderate: 12% | Aggressive: 15%
Total of all monthly investments over the period
(Increase SIP amount every year)
e.g. 10% means ₹10,000 → ₹11,000 → ₹12,100/month
Your monthly SIP in the final year
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₹ ____________

Important Disclaimer

Mutual fund investments are subject to market risks. Past performance doesn't guarantee future returns. The calculations here are for illustration only. Always read the scheme documents carefully before investing.

Getting Started Checklist

Complete KYC (Aadhaar + PAN based, takes 10 minutes online)
Choose fund type based on your goal and risk appetite (Index funds are great for beginners)
Set up auto-debit from your salary account — invest on salary credit day
Start with what you can afford, increase by 10% yearly (Step-Up SIP)
Review portfolio once a year (not monthly!), stay invested for 10+ years

Frequently Asked Questions

Most mutual funds in India allow SIPs starting from just ₹500 per month. Some AMCs like SBI, Nippon, and HDFC even offer ₹100 SIPs in select schemes. The key is to start early — even a small SIP of ₹1,000/month at 12% for 25 years grows to over ₹18 lakh. You can always increase the amount later using step-up SIP.
For long-term goals (5+ years), SIP in equity mutual funds has historically outperformed FDs significantly. SIPs in equity funds have delivered 12–15% CAGR over 10+ years, while FDs offer 6–7%. However, FDs offer guaranteed returns with zero risk, making them suitable for short-term goals or emergency funds. The best approach is to use both — FDs for stability, SIPs for wealth creation.
Yes. SIPs have no lock-in period (except ELSS which has a 3-year lock-in). You can pause, stop, or modify your SIP anytime without penalty. Your already invested money stays in the fund and continues to grow. However, stopping SIPs during market dips is the worst decision — that's precisely when you should continue, as you buy more units at lower prices.
Step-Up SIP (also called Top-Up SIP) automatically increases your SIP amount by a fixed percentage or amount each year. Since your income typically grows annually, increasing your SIP by even 10% each year can dramatically boost your final corpus. A ₹10,000 SIP with 10% annual step-up for 20 years at 12% return gives ₹1.5 Cr vs ₹1 Cr without step-up. Absolutely worth using.
Research shows the SIP date has negligible impact on long-term returns. Over 10–15 years, the difference between the "best" and "worst" SIP date is less than 0.5%. Choose a date that's 2–3 days after your salary credit to ensure sufficient balance. Consistency matters far more than the specific date.