What are SIPs?: SIP Vs. Lumpsum

Let’s talk about SIPs. We hear about them all the time, mutual fund houses pushing SIPs, smallcase promoting them, and investors swearing by them. But how do SIPs actually work? Why do they generate consistent returns? And most importantly, how are they different from lumpsum investing?

Recently, I watched a video that simplified this entire concept using nothing more than an Excel sheet and historical mutual fund data. I want to share what I learned from it and how it shifted my understanding of disciplined investing.

What Is SIP and How Does It Work?

SIP stands for Systematic Investment Plan. In simple terms, it means investing a fixed amount on a fixed date every month, no matter whether the market is up or down. This isn’t about trying to time the market. It’s about building a habit, showing up every month, and letting compounding do the heavy lifting.

I saw an analysis using historical NAV (Net Asset Value) data of a popular mutual fund, PPFAS Flexi Cap Fund. Again, this is not a recommendation. It was simply used to demonstrate how SIPs work over time. The fund launched in May 2013 with a NAV of ₹10. Fast forward to July 2016, the NAV had already risen to ₹18. And by July 2021, it hit ₹45. That’s over 4.5x in about 8 years.

The idea is straightforward: instead of investing ₹1 lakh at once (lumpsum), invest ₹5000 every month. That’s SIP. The benefit? You buy more units when the market is low and fewer units when the market is high. Over time, this averages your purchase cost and reduces risk.

The Power of Discipline

Let’s get into the numbers. From May 2013 to June 2021, an investor who contributed ₹5000 every month would have invested ₹4,90,000. That investment would have grown to ₹11,60,000. That’s a 137% absolute return in 8 years, without ever timing the market. No stress, no guesswork.

Now here’s the kicker: when you annualize that return, it comes out to 11% per year. If you had increased your SIP to ₹10,000 per month, your corpus would’ve grown to ₹23 lakhs. And at ₹20,000 per month? A whopping ₹46 lakhs. The return percentage stays the same, but your wealth scales with consistency.

This is where I agree completely with what was shown in the video: it’s not about predicting market highs and lows. It’s about showing up. Discipline beats timing. Every single time.

Direct vs. Regular Plan – A Costly Difference

If you’ve already started SIPs, here’s one very important thing to know: there’s a major difference between regular and direct mutual fund plans.

Regular plans are what you usually get from agents, your bank, or even your parents’ financial friends. Direct plans are what you buy directly from the fund house or platforms that offer zero commission.

Here’s why this matters: expense ratio.

Expense ratio is the percentage the mutual fund deducts from your investment. In regular plans, it’s higher because agents get their commission from it. In direct plans, there’s no middleman. Lower expense ratio means more of your money is actually invested and working for you.

Switching from regular to direct plans can save you lakhs over the long term. One platform I personally use even shows how much I’m saving by moving my SIPs from regular to direct, no calls, no paperwork, just a few clicks.

SIP vs. Lumpsum – What If I Get a Big Amount?

Now comes the question: What if I receive a lump sum, say ₹1 lakh? Should I invest it all at once?

Here’s the strategy I follow: Don’t dump that money into the market all at once. Instead, park it in a debt mutual fund, which works like a better version of an FD. Then, start a monthly SIP of ₹10,000 from that amount into your chosen equity mutual fund. This way, over 10 months, you systematically deploy your lump sum without trying to time the market.

Meanwhile, that debt mutual fund continues earning you some return (5–7%), and once the ₹1 lakh is fully used up, you can continue the SIP using your regular monthly income.

So, What Did I Learn?

The biggest takeaway for me?

“SIPs are not just a financial instrument. They’re a mindset. A commitment to consistency, not prediction.”

In a world where everyone’s looking for the next hot stock tip, SIPs remind us that slow, steady, and smart always wins.

Mutual funds don’t promise overnight riches. But if you show up every month, with the same ₹5000, ₹10000, or whatever you can afford, and let compounding take over, you’re playing the long game and you’re playing to win.

And yes, the choice between SIP and lumpsum comes down to one thing: your ability to handle risk. If you’re new or risk-averse, SIP is your best bet. If you’re experienced and the market is down, a well-timed lumpsum might beat SIP—but that’s not a game I recommend playing without deep knowledge.

So, if you’re just starting or you want to grow your wealth steadily without stress, start a SIP today. Make sure it’s a direct plan, stay committed, and forget about market timing. Your future self will thank you.
Because you know that this is… How Money Works

Got questions? Drop them in the comments. I’ll be happy to share more of what I’ve learned along the way.