SIP Investment Planning: Starting a mutual fund SIP at 35 is not necessarily too late, but delaying investment by just five years can significantly reduce your retirement corpus because your money gets less time to compound.

When it comes to long-term investing, the amount you invest matters, but how early you start can be equally important. This becomes especially visible when comparing an investor who begins a Systematic Investment Plan (SIP) at age 30 with someone who waits until 35.

Consider two investors who both invest ₹10,000 every month and continue until age 60. Assuming an annualised return of 12%, the five-year difference in their investment periods can translate into a substantial gap in the final corpus.

SIP at 30 vs 35: What Does the Calculation Show?

If an investor starts a ₹10,000 monthly SIP at age 30 and continues investing until 60, the investment gets approximately 30 years to grow.

At an assumed annual return of 12%, the corpus could grow to around ₹3.5 crore.

If another investor starts the same ₹10,000 SIP at 35 and continues until 60, the investment period drops to 25 years. The estimated corpus could be around ₹1.9 crore.

Here's an illustrative comparison:

These are illustrative figures rather than guaranteed returns. Mutual fund performance depends on market conditions and actual returns can be higher or lower.

Why Can Just Five Years Make Such a Big Difference?

The primary reason is compounding.

Returns generated during the early years remain invested and can themselves generate additional returns. Over a period of 25-30 years, this return-on-return effect can become much larger than the investor's original contributions.

That is why the difference between investing for 30 years and 25 years can be disproportionately large compared with the ₹6 lakh difference in direct contributions.

In the example above, the investor starting five years earlier contributes only ₹6 lakh more from their own pocket, but could potentially end up with well over ₹1 crore more at retirement under the assumed return.

Started Your SIP at 35? A Step-Up SIP Can Help

Starting at 35 does not mean that building a substantial retirement corpus is impossible. One strategy is to increase the SIP amount as income grows.

For example, an investor could increase the monthly SIP by 10% every year instead of continuing with a fixed ₹10,000 contribution for the entire period.

This is commonly known as a step-up SIP.

If your salary rises every year, allocating a portion of that increase toward investments can accelerate wealth creation without requiring a very large contribution immediately.

Don't Chase Returns Just Because You Started Late

Someone starting at 35 may be tempted to compensate for lost time by choosing much riskier investments. That can create additional problems.

A more structured approach is to first determine the required retirement corpus, calculate how much needs to be invested regularly and then select an asset allocation consistent with your investment horizon and ability to tolerate market volatility.

With around 25 years remaining until age 60, an investor may still have a substantial long-term investment horizon.

Equity and Debt Can Play Different Roles

Equity-oriented mutual funds have the potential to generate inflation-beating returns over long periods, but they also involve market risk and can experience substantial short-term declines.

Debt and other relatively stable assets can serve a different purpose by reducing overall portfolio volatility.

The appropriate mix depends on factors such as age, financial responsibilities, emergency savings, existing investments, retirement goals and risk tolerance.

Consistency Matters More Than Finding the 'Perfect' Entry Point

Waiting for the stock market to fall or for the "right time" to begin investing can result in further delays.

Regular SIP investing also provides the benefit of rupee-cost averaging: the same contribution purchases more mutual fund units when prices are lower and fewer when prices are higher.

For long-term goals such as retirement, maintaining investment discipline through different market cycles can therefore be more important than trying to predict short-term market movements.

The Bottom Line

Starting a ₹10,000 monthly SIP at 30 rather than 35 can potentially create a dramatically larger retirement corpus because those additional five years give compounding more time to work.

But 35 is not necessarily too late to start. Someone beginning at that age can still have around 25 years until retirement at 60. Increasing investments as income rises, avoiding unnecessary withdrawals and staying invested for the long term can help build a meaningful corpus.

Disclaimer: SIP and mutual fund returns are market-linked and not guaranteed. The 12% return used above is only an illustration. Investors should consider their goals and risk profile and seek professional financial advice where appropriate.