7 Thumb Rules For Investing, Every Investor Should Know (2024)

Investing is a crucial aspect of financial planning. It helps you grow your wealth and achieve your financial goals. However, investing can be overwhelming, especially if you are new to it. That’s where thumb rules come in handy. Thumb rules are simple guidelines that can help you make informed investment decisions. Here are seven thumb rules for investing which can help you achieve your financial goals with ease.

What is a Thumb Rule?

A "thumb rule" (often spelled "rule of thumb") is a general guideline or rough estimate that is based on practical experience rather than precise measurement or calculation. It is a quick and easy way to make approximate judgments or decisions, especially in situations where a more precise or detailed approach is not necessary or feasible.

Thumb Rule #1: Rule of 72

The Rule of 72 is a simple formula that helps you estimate the time it takes for your investment to double. To use this rule, divide 72 by the expected rate of return on your investment. The result is the number of years it will take for your investment to double.

For example, if you invest Rs. 2,00,000 with an expected rate of return of 8% per annum, your investment will double in approximately 9 years (72/8). This rule is applicable to investments that offer compound interest like FDs, etc.

You can also apply the Rule of 72 to determine the necessary interest rate for your investment to double within a specific time frame. For instance, if your goal is to double your investment in 6 years, you can calculate it as follows:

Doubling Time = 72 / Rate of Return

This means the required Rate of Return is 72 / Doubling Time, which translates to 72 / 6, resulting in an annual interest rate of 12%.

Thumb Rule #2: Rule of 114

The Rule of 114 is similar to the Rule of 72 but helps you estimate the time it takes for your investment to triple. To use this rule, divide 114 by the expected rate of return on your investment. The result is the number of years it will take for your investment to triple.

For example, if you invest Rs. 2,00,000 with an expected rate of return of 8% per annum, your investment will triple in approximately 14.25 years (114/8).

In case you aim to triple your investment over 8 years:

Tripling Time = 114 / Rate of Return

This implies that the required Rate of Return can be calculated as 114 divided by the Doubling Time, which, in this scenario, would be 114 divided by 8, resulting in an annual interest rate of 14.25%.

Read Also: When is the Right Time to Invest in a Fixed Deposit

Thumb Rule #3: Rule of 144

The Rule of 144 is similar to the Rule of 72 and Rule of 114 but helps you estimate the time it takes for your investment to quadruple. To use this rule, divide 144 by the expected rate of return on your investment. The result is the number of years it will take for your investment to quadruple.

For example, if you invest Rs. 2,00,000 with an expected rate of return of 8% per annum, your investment will quadruple in approximately 18 years (144/8). Remember this applies in the case of investments which offer compound interest.

In case you aspire to quadruple your investment over a 10-year period:

Quadrupling Time = 144 / Rate of Return

This means that you can calculate the required Rate of Return by dividing 144 by the Doubling Time, which, in this context, is 144 divided by 10, resulting in an annual interest rate of 14.4%.

Thumb Rule #4: Minimum 10% Investment Rule

The Minimum 10% Investment Rule suggests that you should invest at least 10% of your income every month towards long-term investments, while also increasing your investment by 10% each year.

For example, if your monthly income is Rs. 50,000, you should invest at least Rs. 5,000 every month towards long-term investments.

Thumb Rule #5: 100 minus Age Rule

The 100 minus age guideline offers a framework for determining the appropriate equity and debt allocation in your investment portfolio. It suggests subtracting your age from 100 to find the suitable percentage of equity or stocks exposure. The remainder can then be allocated to debt instruments.

This rule is based on the assumption that as an individual approaches retirement, their allocation to equities should decrease.

For instance, if you are 35 years old and embarking on your investment journey, the 100 minus age rule would guide your portfolio allocation as follows:

Equity: 100 - 35 = 65%

Debt: 35%

Thumb Rule #6: Emergency Fund Rule

The Emergency Fund Rule suggests that you should have an emergency fund that can cover at least three to six months’ worth of expenses.

For example, if your monthly expenses are Rs. 50,000, your emergency fund should be at least Rs. 1.5 lakh to Rs. 3 lakh. This amount should ideally be quite liquid, and easily accessible in case of an emergency.

Read Also: How to Invest in Fixed Deposit (FD) Online

Thumb Rule #7: 4% Withdrawal Rule

Many individuals strive to save for their retirement and build a corpus that will provide for them throughout their lifetime. However, due to the unpredictability of inflation rates, there exists a risk of depleting this corpus prematurely. The 4% Withdrawal Rule is intended for retirees to ensure a consistent income source without depleting their savings too rapidly.

According to this principle, withdrawing 4% of your retirement corpus each year should suffice to cover your living expenses. For instance, if you possess a retirement fund of Rs. 1 crore, adhering to this rule means you should limit your annual withdrawal to no more than Rs. 4 lakh in order to effectively manage your living costs.

For example, if your retirement corpus is Rs. 2 crore, you can withdraw up to Rs. 8 lakhs every year without depleting it.

Key Takeaways

These seven thumb rules offer a structured approach to building wealth, making informed financial decisions, and securing your financial future. While they provide valuable guidance, it's essential to adapt them to your specific financial goals and risk tolerance.

Tips!

In addition to these thumb rules, here are some other tips for investing in the Indian financial market:

  • Diversify Your Portfolio: Diversification helps reduce risk by spreading out investments across different asset classes such as FDs, Mutual Funds, stocks, etc
  • Invest for the Long Term: Investing for the long term helps reduce risk and allows compounding to work its magic. You can opt for an FD from Bajaj Finance (tenures ranging from 12 to 60 months).
  • Keep Your Emotions in Check: Investing can be emotional but making decisions based on emotions can lead to poor investment choices.
  • Stay Informed: Keep yourself updated with the latest news and trends in the financial market.

What are the benefits of using the thumb rules of investment?

Thumb rules of investment are general guidelines that can provide a quick and simple way for individuals to make decisions about their investments. While they are not precise or tailored to specific circ*mstances, they can offer some benefits, especially for those who are new to investing or looking for easy-to-remember principles. Here are some potential benefits of using thumb rules of investment:

  • Simplicity: Thumb rules are straightforward and easy to understand, making them accessible to a wide range of investors, including those without a deep understanding of financial markets.
  • Quick Decision-Making: These rules provide a rapid way to assess investment opportunities and make decisions without the need for extensive analysis. This can be useful for individuals who prefer a more hands-off or less time-intensive approach to investing.
  • Risk Management: Some thumb rules incorporate risk management principles, helping investors establish a basic framework for diversification and asset allocation. This can contribute to a more balanced and diversified investment portfolio.
  • Starting Point: Thumb rules can serve as a starting point for investors to develop a basic investment strategy. While they may not be sufficient for a comprehensive plan, they can provide a foundation that individuals can build upon as they gain more knowledge and experience.

Navigating the Indian financial market can be a daunting task, but these thumb rules offer clarity and direction. By diligently following these principles, you can grow your wealth, plan for retirement, and overcome financial challenges with confidence. Remember that financial planning is a dynamic process, and these thumb rules are your reliable companions in achieving your financial aspirations.


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7 Thumb Rules For Investing, Every Investor Should Know (2024)

FAQs

What is the rule of 7 investing? ›

The 7-Year Rule for investing is a guideline suggesting that an investment can potentially grow significantly over a period of 7 years. This rule is based on the historical performance of investments and the principle of compound interest.

What is the thumb rule for investing? ›

Thumb Rules for Investing. Investors often wonder what kind of returns they can expect from their investments. The 10,5,3 rule offers a simple guideline. Expect around 10% returns from long-term equity investments, 5% from debt instruments, and 3% from savings bank accounts.

What is Warren Buffett's golden rule? ›

Warren Buffett once said, “The first rule of an investment is don't lose [money]. And the second rule of an investment is don't forget the first rule. And that's all the rules there are.”

What is the seven ten rule of investment? ›

In other words, the 7/10 rule is a time and interest-based investment rule. For example, you invest ₹100 at 10%, it will take 7 years for it to touch ₹200. Here, 7 is the time and 10% is the interest rate.

What is the rule of 7's? ›

The Rule of 7 asserts that a potential customer should encounter a brand's marketing messages at least seven times before making a purchase decision. When it comes to engagement for your marketing campaign, this principle emphasizes the importance of repeated exposure for enhancing recognition and improving retention.

What is the rule #1 of value investing? ›

Value investors often make decisions similar to what Ben Graham did, based on the business looking cheap, but Rule One investors know that it is better to buy a wonderful business at a fair price than a fair business at a wonderful price.

What is the 80 20 20 rule investing? ›

In investing, the 80-20 rule generally holds that 20% of the holdings in a portfolio are responsible for 80% of the portfolio's growth. On the flip side, 20% of a portfolio's holdings could be responsible for 80% of its losses.

What is the 10/5/3 rule in finance? ›

The 10-5-3 rule can be used as a general principle for diversifying your investment portfolio. It suggests that 10% of your portfolio should be allocated to high-risk, high-reward investments, 5% to medium-risk investments, and 3% to low-risk investments.

What is the #1 rule of investing? ›

1 – Never lose money. Let's kick it off with some timeless advice from legendary investor Warren Buffett, who said “Rule No. 1 is never lose money.

What is the golden rule of investing? ›

Warren Buffet's first rule of investing is to never lose money; his second is to never forget the first rule. This golden rule is key for long-term capital protection and growth. One oft-used strategy to limit losses in turbulent markets is an allocation to gold.

What will never lose value? ›

Things that don't depreciate in value are things that don't lose their qualities as time passes or things that actually increase in value with the passage of time. These include goodwill, luxurious items, high-quality art, gems, alcoholic beverages, and land.

What are Warren Buffett's 5 rules of investing? ›

A: Five rules drawn from Warren Buffett's wisdom for potentially building wealth include investing for the long term, staying informed, maintaining a competitive advantage, focusing on quality, and managing risk.

What is the 1234 financial rule? ›

One simple rule of thumb I tend to adopt is going by the 4-3-2-1 ratios to budgeting. This ratio allocates 40% of your income towards expenses, 30% towards housing, 20% towards savings and investments and 10% towards insurance.

What is the thumb rule of investment? ›

The Minimum 10% Investment Rule suggests that you should invest at least 10% of your income every month towards long-term investments, while also increasing your investment by 10% each year.

What is the 7% rule money? ›

The seven percent savings rule provides a simple yet powerful guideline—save seven percent of your gross income before any taxes or other deductions come out of your paycheck. Saving at this level can help you make continuous progress towards your financial goals through the inevitable ups and downs of life.

Is a 7% return realistic? ›

While quite a few personal finance pundits have suggested that a stock investor can expect a 12% annual return, when you incorporate the impact of volatility and inflation, 7% is a more accurate historical estimate for an aggressive investor (someone primarily invested in stocks), and 5% would be more appropriate for ...

Is 7 a good return on investment? ›

General ROI: A positive ROI is generally considered good, with a normal ROI of 5-7% often seen as a reasonable expectation. However, a strong general ROI is something greater than 10%. Return on Stocks: On average, a ROI of 7% after inflation is often considered good, based on the historical returns of the market.

Does money double every 7 years? ›

For example, the Rule of 72 states that $1 invested at an annual fixed interest rate of 10% would take 7.2 years ((72 ÷ 10) = 7.2) to grow to $2. In reality, a 10% investment will take 7.3 years to double (1.107.3 = 2).

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