rule of seventy: How much time does it take to double your Money?

personal finance

The rule states that the amount of time required to double your money can be estimated by dividing seventy two by your rate of return. By dividing 72 by the annual rate of return investors obtain a rough estimate of how many years it will take for the initial investment to duplicate itself. Investors can use the rule of 70 to evaluate varied investments together with mutual fund returns and the growth fee for a retirement portfolio. For instance, over eight years to avoid wasting $720,000 you should save $90,000 per 12 months. And at 9% annual interest, you’ll accumulate $1,080,000 over this eight year interval.


Take into consideration the representation, if any, submitted by the pensioner under Clause . Where the authority competent to pass an order under sub-rule is the President, the Union Public Service Commission shall be consulted before the order is passed. A Government servant shall not earn two pensions in the same service or post at the same time or by the same continuous service. Each year she works she gets 2 points – 1 for working and 1 for getting a year older. So, to determine how many years she needs to work, we simply divide 38 by 2 to get 19.

  • Mostly this rule is been used frequently rather than taking rule of 115 examples to calculate time taken to grow your investment triple of its value.
  • So, 72 divided by 12, which means in six years, your money is likely to double.
  • In Asia the population doubled in 33 years and will probably double again in 39 years.

So if you Rs 4 lakh in the first year, you should withdraw Rs 4 lakh 20 thousand in the second year and Rs 4 lakh 41 thousand in the third year. That is every year you should increase the withdrawal amount by another 5 percent . For example, if you invest Rs 1 lakh in a product that gives you 6 percent interest rate, it will become Rs 4 lakh in 24 year as per the rule 144. All you need to do is divide 144 with the interest rate of the product to calculate the number of years in which the money will grow four times.

Why does the rule of 72 work?

Setting aside money to deal with unforeseen events is a necessary component of personal finance. After fulfilling the primary obligation, one can make headway towards other financial objectives, such as debt repayment, retirement savings, or investing for future education. Let’s assume you have invested INR 2 lakh in a product with a 5% rate of return.


Similarly, you can use Rule of 115 formula to calculate the same and you can choose any one which best suits your requirement. For continues power of compounding, rule of 69 offers a valid result for any rates. Considering daily compounding looks close plenty of towards continuous compounding, for most reasons rule of 69, rule of 69.3 or rule of 70 is better than rule of 72 for everyday compounding.

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If your present income is low, the federal government will even successfully match some portion of your retirement financial savings. The Retirement Savings Contributions Credit reduces your tax bill by 10% to 50% of your contribution. The rule says that to find the number of years required to double your money at a given interest rate, you just divide the interest rate into 72. For example, if you want to know how long it will take to double your money at eight percent interest, divide 8 into 72 and get 9 years. The efficient annual rate of interest is the true return on an investment, accounting for the effect of compounding over a given time frame.

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People invest in different forms of investments taking into consideration various factors like time horizon, risk aptitude, market conditions, etc. This is the simplest rule that suggests the expected earnings from investments. It says that one can expect 10% returns from equities, 5% from bonds and 3% from liquid cash and cash-like accounts. Save taxes with Clear by investing in tax saving mutual funds online. Our experts suggest the best funds and you can get high returns by investing directly or through SIP.

Top 10 Thumb Rules For Investing Every Investor Should Know

The 100 minus age rule is a great way to determine one’s asset allocation. That is, how much you should allocate in equities and how much in debt. In this blog, we will talk about the 10 most popular thumb rules in the world of investing. It is, therefore, necessary to ensure that cases where pensioners are convicted by a Court of any crime are also brought to the notice of Government. In this latest episode of, ‘Money Money Money’, Mohit Gang, CEO and Co-founder of Moneyfront discussed some practical rules of investing, which will hold you in good stead no matter where you are in your investment journey.

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Those interested in a secondary source of income through investing must first acquaint themselves with the thumb-rules of investing. While investing may seem complicated for a beginner, it is not really true. All you need to do is follow certain thumb rules that act as excellent starting points and ease you into your investment journey.

The greatest approach to double your money is to benefit from retirement and tax-advantaged accounts offered by employers, notably 401s. The months average annualized return for the S&P 500 from 1994 through 2018 was 8.52%. In other words, if you had invested in an index fund that tracks the S&P 500 in 1994 and you by no means withdrew the money, you would have common returns of 8.52% per yr. At that price, you need to anticipate to double your cash about every eight.45 years. The Rule of seventy two is a straightforward calculation to find out how long it’ll take you to double your cash.

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Typically the rule of seventy of 70 is a calculation to help determine the number of years it might take to double the money with a specific rate of return. Among the two rules, investors prefer the Rule of 72 over 70 as it is a convenient choice of the numerator, having many small divisors such as 1, 2, 3, 4, 6, 8, 9, and 12. It makes up for a better choice for understanding and determining the compounding effect of the period and rate of return. However, the Rule of 70 is also a good numerator as far as the interest rates are lower than 6% and provides a better estimate than the Rule of 72. The Rule of 72 is a quick way to estimate the time your investment would take to double at a given annual compounding rate of return. Though it doesn’t provide reliable results for the simple interest rate, the rule does not consider the risk element.

– The term `grave misconduct’ used in Article 351-A of CSR [Rule 9, CCS Rules, 1972] is wide enough to include `corrupt practices’. In cases where the charge of corruption is proved after pension has been sanctioned, action to withhold or withdraw pension may be taken under Article 351-A ibid [Rule 9, CCS Rules, 1972]. Now, let us say if the rate of interest is 10 percent and you divide 114 by that your money triples in 11.4 years. You divide 144 by 10 percent, your money quadruples in 14.4 years.

I love doing analysis on various Best Investment Plans like mutual funds, Stocks, IPO’s, NCD Bonds, Insurance products. Divide 114 by the rate of interest you are receiving and it will give the number of years your money will be tripled. Eg- if your annual expense after 50 years of age is 500,000 and you wish to take VRS then the corpus with you required is 1.25 crore. Eg, if you want to know how long it will take to double your money at 8% interest, divide 72 by 8 and get 9 years. Divide 114 by the interest rate to know in how many years will Rs 10,000 become Rs 30,000. Divide 72 by the interest rate you are compounding your money with and you will arrive at the number of years it will take to double in value.


A book called ‘summa de arithematica’ has put the light on how you can estimate and evaluate duration to double your investment in simplest way by compounding interest formula. Rule of 72 means that Divide the number 72 with the rate of interest and witness the magical number which states number of years for your capital to double. Among the numerous rules used by investors along with the Rule of 72 are the Rules of 70, 69, and 69.3. The Rule of 70 also uses the same formula, with 72 being replaced by 70 and divided by the annual interest rate of any investment.

  • The good news is that the Rule of 72 will help you achieve this in the least amount of time.
  • At the same time, like saving banks accounts, liquid funds are highly liquid, i.e. the money is available in very short notice.
  • Hence, you can simply understand that ‘rule of 144’ helps you calculate in how many years your money will grow four times if you know the rate of return.
  • Take the number 72 and divide it with the rate of return of the investment product.
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Inflation is another area of concern that influences your investments. You might increase your withdrawal by 6% every year to account for inflation. The rule generalizes people’s risk preferences and is based solely on age. How would you apply the rule to a risk-averse person in his early thirties? The investment strategy must consider factors such as risk tolerance, time frame for achieving goals, and expectation of returns. The figure you get is the period it would take for your money to be worth half as much as now.

Bangladesh on the other hand has a current doubling time of 29 years. Here Rule of 144 formula offer you to have simple calculation to solve your mathematical problem of quadruple the investment time period. Just write the bank account number and sign in the application form to authorise your bank to make payment in case of allotment. No worries for refund as the money remains in investor’s account.”

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