₹ My Finance Nest / Blog / What is SIP and How Does It Work in India?
Mutual Funds ⏱ 7 min read

What is SIP and How Does It Work in India?

A Systematic Investment Plan (SIP) is one of the simplest and most powerful ways to build wealth in India. If you have ever wondered how to start investing without a large lump sum, SIP is the answer.

What Exactly is a SIP?

A Systematic Investment Plan, commonly known as SIP, is a method of investing a fixed amount of money into a mutual fund at regular intervals — usually monthly. Instead of investing a large amount all at once, you invest small, manageable sums over time.

Think of it like a recurring deposit in a bank, but instead of a fixed return, your money is invested in the stock or bond market through a mutual fund, giving you the potential for higher long-term returns.

How Does SIP Work?

When you start a SIP, you authorise a mutual fund house to automatically debit a fixed amount from your bank account every month. This money buys units of the chosen mutual fund at the current Net Asset Value (NAV) — essentially the price per unit of the fund on that day.

Since you invest the same amount each month, you buy more units when the price is low and fewer units when the price is high. Over time, this averages out your purchase cost — a concept known as Rupee Cost Averaging.

Example: Suppose you invest ₹5,000 per month in a SIP.
Month 1: NAV = ₹50 → you get 100 units
Month 2: NAV = ₹40 → you get 125 units
Month 3: NAV = ₹50 → you get 100 units
Total units = 325 | Total invested = ₹15,000 | Average cost = ₹46.15 per unit (instead of ₹50)

The Power of Compounding in SIP

The real magic of SIP lies in compounding — earning returns not just on your principal but also on your previous returns. The longer you stay invested, the more dramatic the compounding effect becomes.

Monthly SIPDurationAssumed Return (12% p.a.)Total Corpus
₹5,00010 years12%~₹11.6 Lakhs
₹5,00020 years12%~₹49.9 Lakhs
₹5,00030 years12%~₹1.76 Crores

Notice how the corpus more than triples when you extend from 20 to 30 years — that is compounding at work.

Types of SIP

1. Regular SIP

The most common type — a fixed amount invested every month on a set date.

2. Step-Up SIP (Top-Up SIP)

You increase your SIP amount by a fixed percentage each year — usually in line with your salary hike. Starting at ₹5,000 and stepping up 10% annually makes a dramatic difference over a decade.

3. Flexible SIP

You can change the investment amount based on your cash flow each month. Useful if your income is irregular.

4. Trigger SIP

Investments are triggered automatically when the market hits a specific condition — like a certain index level. Suitable for experienced investors only.

Benefits of SIP

How to Start a SIP in India

  1. Complete your KYC (Know Your Customer) — required for all mutual fund investments
  2. Choose a mutual fund based on your goal and risk appetite
  3. Visit the AMC website, a platform like Zerodha Coin, Groww, or your bank
  4. Select the fund, enter your SIP amount and date
  5. Set up an auto-debit mandate from your bank account

Calculate how much your monthly SIP will grow over time with our free calculator.

Use SIP / Compound Interest Calculator →

Common SIP Mistakes to Avoid

Frequently Asked Questions

Q: Can I stop my SIP anytime?

Yes, most SIPs can be paused or stopped without any penalty. Your invested money stays in the fund and continues to grow.

Q: Is SIP safe?

SIP is a method of investing in mutual funds, which are subject to market risk. However, long-term SIPs in diversified equity funds have historically delivered strong returns.

Q: What is the minimum SIP amount?

Many funds allow SIPs starting from ₹100 or ₹500 per month. There is no upper limit.

Q: Is SIP better than FD?

SIPs in equity mutual funds have historically outperformed Fixed Deposits over long periods (10+ years), but they carry market risk unlike FDs which offer guaranteed returns.

Q: How is SIP taxed in India?

Gains from equity mutual funds held over 1 year are taxed at 10% (LTCG) above ₹1 lakh. Short-term gains (under 1 year) are taxed at 15%.