Understanding SIP — A Beginner's Guide
What Is a SIP?
A Systematic Investment Plan (SIP) is a way to invest a fixed amount in a mutual fund every month — usually automatically debited from your bank account. Instead of trying to time the market with a lumpsum, you commit to investing the same amount whether the market is up or down. Over time, this smooths out your average buying price (a concept called "rupee cost averaging") and removes most of the emotional drama from investing.
How Compound Interest Works in Your Favour
Compound interest is when the returns on your investment start earning returns of their own. In the first year of a SIP, most of your growth comes from your contributions. But by year 10, 15 or 20, the bulk of your corpus is actually growth on top of growth — money making money for you while you sleep. That's why starting early, even with a small amount, beats starting late with a bigger amount almost every single time.
Why SIP Usually Beats Lumpsum for Most Investors
In theory, a lumpsum invested at the right moment outperforms a SIP — because more money is in the market for longer. In practice, almost nobody nails the timing. A SIP removes the need to be right about market direction. You buy more units when prices are low and fewer when prices are high, automatically. For salaried investors who don't have a windfall lying around, SIPs are also simply the most realistic way to invest a portion of every paycheck.
What Is a Step-Up SIP?
A step-up SIP increases your monthly investment by a fixed percentage every year — typically 5%, 10% or 15%. The logic is simple: as your salary grows, so should your investments. A step-up SIP of just 10% per year can dramatically increase your final corpus without ever feeling like you're "saving more." Try moving the step-up slider above to see how much difference even 10% per year makes over 20 years.
The 15-15-15 Rule
A popular rule of thumb among Indian investors: invest ₹15,000 per month for 15 years at 15% annual return, and you end up with roughly ₹1 crore. The maths is a useful mental model, but the assumed returns are aggressive — Indian equity has historically averaged around 12% over long periods, not 15%. Use the calculator above with realistic numbers (10–12%) to set expectations you can actually meet, then treat anything above that as a bonus.
Where to Start a SIP in India
The easiest entry points for most Indian investors are Groww, Upstox, Zerodha Coin and Kuvera — all of which let you start a SIP with as little as ₹100 to ₹500 per month, with no commissions on direct mutual funds. KYC is fully digital and usually completes within a day. Pick one platform, start small, and let compounding do the rest.