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HomeArticlesPower of Compounding in Stock Market: How It Works & Maximizes Wealth
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Power of Compounding in Stock Market: How It Works & Maximizes Wealth

DG

Devika Gupta

Financial Advisor

May 29, 2025
5 min read
Illustration image for Power of Compounding in Stock Market: How It Works & Maximizes Wealth

Compounding is one of the most powerful forces in investing often referred to as the eighth wonder of the world. Compounding is the key to turning small, regular investments into substantial wealth over time. Whether you’re saving for retirement, a home, or your child’s education, harnessing compounding can dramatically boost your financial outcomes.

What Is Compounding?

Compounding is the process by which the returns you earn on an investment begin to generate their own returns over time. In simple terms, you earn interest on the principal, and then you earn interest on that interest. Think of it as a snowball effect — your money grows faster as returns accumulate on both the principal and past gains.

This cycle continues as long as your investment remains untouched and returns are reinvested, enabling your money to grow exponentially.

The Formula Behind Compounding

To understand compounding mathematically, here is the basic compound interest formula:

A = P × (1 + r/n)^(nt)

Where:

  • A = Amount of money accumulated after n years, including interest
  • P = Principal amount (initial deposit)
  • r = Annual interest rate
  • n = Number of times that interest is compounded per year
  • t = Number of years the money is invested or borrowed for

Real-Life Example of Compounding in India

Let’s assume you invest ₹1,00,000 in a fixed deposit that gives an annual return of 7% compounded yearly.

Data Table
YearInvestment Value (₹)
1₹1,07,000
2₹1,14,490
3₹1,22,504
5₹1,40,255
10₹1,96,715
20₹3,86,968

After 20 years, your ₹1 lakh grows to nearly ₹3.87 lakhs — without any additional investment! That’s the power of compounding. Notice how the growth accelerates in later years? That’s because your returns are now generating returns of their own.

Step-by-Step: How to Create Passive Income with Investments

1. Time Is Your Best Friend

The earlier you start investing, the more time your money has to compound. Even small monthly contributions can snowball into a large corpus if you give them enough time. This is especially relevant for young investors in India who can benefit the most by starting early.

2. Works Best with Reinvestment

To truly harness the power of compounding, reinvest your returns. Investment options like mutual funds (especially growth option), EPF, and PPF automatically reinvest returns, making them ideal compounding instruments.

3. Compounding Reduces the Burden of Investment

Small, regular investments benefit greatly from compounding. This means you don’t need a large lump sum upfront to build wealth steadily.

Compounding in SIP (Systematic Investment Plan)

SIPs let you invest small amounts regularly and still enjoy compounding’s benefits. Let’s say you invest ₹5,000 every month in an equity mutual fund via SIP at an average annual return of 12%. Here's how much wealth you could accumulate:

Data Table
DurationTotal InvestmentValue with Compounding (₹)
5 years₹3,00,000₹4,05,000
10 years₹6,00,000₹11,61,000
20 years₹12,00,000₹49,00,000

As you can see, a ₹5,000 monthly SIP at 12% annual return grows to ~₹49 lakhs in 20 years—despite investing only ₹12 lakhs. The investment grows almost 4 times in 20 years due to compounding. The longer the duration, the more significant the compounding effect.

Where Can You Benefit from Compounding in India?

Here are some common investment options in India where compounding plays a major role:

Data Table
Investment OptionCompounding FrequencyTypical Returns (Approx)
Fixed DepositsQuarterly5% – 7%
Public Provident Fund (PPF)Yearly~7.1%
Employees' Provident Fund (EPF)Yearly~8.15%
Mutual Funds (Growth Option)Market-Linked10% – 15% (Long term)
National Savings Certificate (NSC)Yearly~7.7%

The Role of Tax Efficiency in Compounding

While compounding helps your money grow, taxes can reduce your effective returns, especially if you're not investing in tax-efficient instruments. In India, different investment products are taxed differently, and choosing the right one can significantly impact your long-term wealth.

Below is the common taxation on various investment options:

Data Table
Investment OptionTax Treatment
Fixed Deposit (FD)Interest is added to income and taxed as per slab (up to 30%)
PPFCompletely tax-free (EEE: Exempt-Exempt-Exempt)
EPFTax-free if conditions met (5 years of service, etc.)
Mutual Funds (Equity)LTCG over ₹1 lakh taxed at 10%, STCG taxed at 15%
Mutual Funds (Debt)LTCG taxed at 20% with indexation; STCG taxed as per slab
NSCInterest taxable, but reinvested interest qualifies for deduction under 80C

Tax-efficient investments allow more of your returns to be reinvested, which supercharges the compounding effect over time.

Inflation: The Silent Wealth Killer

While compounding helps grow your money, inflation eats into your purchasing power. Inflation erodes the purchasing power of your returns. For example, if your investment earns 8% annually but inflation is 6%, your real return is only 2%.

Let’s look at a scenario for 10 Lakhs investment for 20 Years

Data Table
ScenarioNominal ReturnInflation RateReal ReturnValue in Today’s Rupees
FD with 7% annual return7%6%1%₹12.2 lakhs
PPF with 7.1% return (tax-free)7.1%6%1.1%₹12.5 lakhs
Equity Mutual Fund (12% return)12%6%6%₹32.0 lakhs

This illustrates that while FDs may feel safe, they often don’t beat inflation over the long term. Investments that provide higher real returns — like equity mutual funds — are essential for preserving and growing wealth.

Tips to Maximize Compounding Benefits

  • Start Early: Even a 5-year head start can make a big difference over the long term.
  • Be Consistent: Regular investments, like SIPs, build wealth steadily.
  • Stay Invested: Don’t withdraw your investments frequently; give time for compounding to work.
  • Reinvest Returns: Choose growth options where returns are reinvested automatically.
  • Avoid Unnecessary Risks: Stay invested in suitable instruments as per your risk appetite to avoid breaking the compounding cycle.

Conclusion

Compounding is not just a financial concept — it’s a proven wealth creation strategy that rewards patience and discipline. The earlier you start and the longer you stay invested, the more your money can grow—often far beyond your expectations.

To see how compounding can impact your future, use tools like the Compound Interest Calculator or SIP Calculator to visualize how small monthly contributions grow over time. If you’re planning for retirement or a financial milestone. Remember: time is your greatest ally when it comes to compounding—so start now, stay invested, and let your money do the heavy lifting.

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