Systematic Investment Plans aka SIPs have made investing in mutual funds a lot more accessible and affordable for everyone. This investment vehicle gives you a disciplined approach to investing while benefitting from the power of compounding that leads to exponential growth in the long term.
When you invest, it is always important to know how your investments will grow over time. When it comes to mutual funds, the 8-4-3 rule of compounding helps you visualise how your returns grow over the years. Let’s see what the 8-4-3 rule is and how it works.
The 8-4-3 rule of SIP is an illustration of how consistent and long-term investment can benefit from the power of compounding. It gives you an idea of how your investments might grow over time based on three phases.
Steady Growth Phase (First 8 years): In this initial phase, your investment growth is slow and steady at an annual return rate of about 12%. Your investments through SIP slowly increase as your contributions start to accumulate and generate wealth. This lays the foundation for the future phases of growth.
Accelerated Growth Phase (Next 4 years): In this phase, your investment grows at an accelerated phase. The effect of compounding becomes more apparent in this phase as the returns you earned in the first 8 years begin to generate further returns.
Exponential Growth Phase (Last 3 years): In the final 3 years, you experience exponential growth. The cumulative effect of the compounding over the previous years growth the value of your investment and allows you to generate returns a lot faster.
To understand the 8-4-3 rule, let's consider a numerical example based on initiating an investment in a mutual fund sip plan. Your SIP amount every month is Rs 1000 and the initial rate of return is 12%. For simplicity, we'll approximate the growth.
Years 1-8 (Steady): With Rs 1000 monthly contributions and a 12% annual return, the investment grows to roughly Rs 161,527.
Years 9-12 (Accelerated): The growth rate doubles. This increased return applied to the growing principal results in the investment reaching approximately Rs 498,821.
Years 13-15 (Exponential): The growth rate quadruples. This dramatic increase on the already substantial amount leads to a final investment value of around Rs 2,127,831.
The 8-4-3 rule simplifies the complex principle of compounding for investors who are not financial experts. Here are some benefits of the 8-4-3 rule:
The 8-4-3 rule encourages you to stay disciplined in your investments as it helps you visualise the benefit of consistent contributions over time.
The 8-4-3 SIP rule encourages investors to opt for a long-term horizon. This allows them to ride out market fluctuations and benefit from the gains that materialise in the later years of their investment.
The concept of compounding in SIP investments can be quite complex for beginners to fully grasp. The 8-4-3 rule simplifies this and helps investors understand how their earnings generate further earnings, leading to exponential growth in the later stages.
The 8-4-3 rule can be a motivator for you to stick to your long-term investment plans and reap the rewards of compounding. While planning your investments is essential, it is also important to make these investments through reliable platforms.
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The 8-4-3 rule suggests that if you invest in equity mutual funds for 8 years, your invested capital will double every 4 years, delivering around 12% compounded annual growth rate (CAGR).
Over 8 years, it means your investment will grow ~ 3 times. That’s why it is called the 8-4-3 Rule of SIP.
However, the 8-4-3 is one of the rules of an SIP. It is not a guarantee that your investment will double in 4 years. The actual returns will depend on market performance, fund quality, and the steadiness of SIPs.
No, the 8-4-3 rule is only for equity mutual funds that too when it is an SIP. It is based on historical average returns from equity markets, which have delivered 10%–14% CAGR over the long term. This SIP rule does not apply to debt funds, fixed deposits, or hybrid instruments.
Not effectively. The 8-4-3 rule assumes long-term compounding. That is why it needs a minimum of 8 years to show its full potential. Applying it to a shorter period, like 2–3 years, may not give you the expected results.
Equity markets are unstable in the short term and may not deliver consistent returns. For short durations, you can invest in debt mutual funds or fixed-income products.
Yes, market volatility can affect the results of the 8-4-3 rule. Since it’s based on long-term equity fund performance, any extended decline or economic disturbance can delay or reduce returns.
However, SIPs can help you average out volatility through rupee cost averaging. Sticking to your investment plan through market cycles increases the chance of meeting or exceeding the 8-4-3 expectations. The rule works best when you are disciplined and patient.
To benefit from the 8-4-3 rule in mutual fund investing, you must:
Invest in equity mutual funds with strong track records and consistent fund management via SIPs.
Maintain a minimum 8-year investment horizon to allow compounding to work.
Stay disciplined. Avoid panicking when the market turns volatile.
Choose funds aligned with your risk appetite and financial goals.