--- title: "Rule Of 72: Your Guide to Smart Investment Decision-Making" description: "Discover the power of the Rule of 72, a simple investment trick to determine your return timeline. Make smarter decisions & maximize your investment growth." url: "https://www.mrmoneytv.com/articles/rule-of-72-your-guide-to-smart-investment-decision-making/" category: "Investing & Market" author: "Finlit" published: 2023-07-14 source: "Mr Money TV" --- # Rule Of 72: Your Guide to Smart Investment Decision-Making Discover the power of the Rule of 72, a simple investment trick to determine your return timeline. Make smarter decisions & maximize your investment growth. ## Key takeaways - The Rule of 72 tells you how many years it takes to double your money at a given compounding return: divide 72 by the annual return rate. - At a 4% return, RM10,000 takes 18 years to double to RM20,000 (72 divided by 4). - At a 7% return, that same RM10,000 doubles in just over 10 years, since 72 divided by 7 is about 10.28 years. - Run it backwards to test a sales pitch: a product that doubles RM10,000 in 20 years is only paying 3.6% per annum. - Use it to compare an offered product against similar-return options like bonds or fixed deposits before you commit. - It is built for quick answers only; real investment decisions still need deeper study and analysis. Have you ever been pitched an investment product with promises of doubling your investment in 10 or 20 years? These investment consultants can sound incredibly charismatic and convincing, making their product seem like the most beneficial investment in the world. But how can you truly evaluate whether the return on investment is indeed good or not? Today, we will uncover a simple trick that will allow you to decipher the value of an investment return – the Rule of 72. Let's consider a scenario. If you were to invest RM10,000 in a fixed deposit account with a 4% interest rate, how long do you think it would take for your initial investment to double and become RM20,000? The answer is surprisingly simple if you use the Rule of 72. This principle is an effective way to **calculate how long it will take for you to double your money** based on a compounding return. ## What Is The Rule of 72? It's an easy mathematical equation: ![rule of 72 formula](../../assets/articles/rule-of-72-your-guide-to-smart-investment-decision-making/img-1.jpg) Using this formula, if the return is 4%, 72 divided by 4 equals 18 years. Therefore, if you invest RM10,000 in an investment that offers a 4% return per annum, it will take you **18 years** to double your investment to RM20,000. With a 7% return, 72 divided by 7 equals approximately 10.28 years. Hence, a RM10,000 investment at a 7% annual return will take just over 10 years to become RM20,000. By understanding the Rule of 72, you now hold the key to quickly determine the time it will take to double your investment. ## Benefits of The Rule of 72 This simple rule can be beneficial in your everyday life. Imagine you're introduced to a promising investment opportunity. They guarantee that your RM10,000 will double in 20 years. It might sound appealing, especially when the advisor is exceptionally persuasive. But what is the actual return you're getting? Using the Rule of 72, you can quickly find out that the **annual compounding return** from this product is only 3.6% per annum. Knowing this, you might start **comparing this product to other similar return investments** such as bonds or fixed deposits. By asking the right questions, you can then discern whether the product is truly suitable for your financial goals. Although the Rule of 72 is a handy tool for **quick calculations**, making investment decisions should always involve more in-depth study and analysis. But when you need **swift answers** to questions like: how long it will take to double your investment; or what the compounding annual return is, the Rule of 72 is an excellent tool to have at your disposal. Incorporating the Rule of 72 into your investment decision-making process will not only help you make better informed decisions, but it also might make you look pretty smart, too. So, will you use the Rule of 72 in your investment journey? ## Frequently asked questions ### What is the Rule of 72? The Rule of 72 is a simple equation that tells you how long it takes to double your money at a given compounding return. You divide 72 by the annual return rate to get the number of years. For example, at a 4% return, 72 divided by 4 equals 18 years to double. ### How long does it take to double RM10,000 at a 4% return? 18 years. Using the Rule of 72, you divide 72 by 4, which equals 18, so RM10,000 in an investment paying 4% per annum takes 18 years to grow to RM20,000. At a 7% return, 72 divided by 7 is about 10.28 years, so it doubles in just over 10 years. ### How do I use the Rule of 72 to check if an investment is worth it? Work it backwards. If an advisor guarantees your RM10,000 will double in 20 years, divide 72 by 20 to get the real return: only 3.6% per annum. Once you know that, you can compare the product against similar-return investments like bonds or fixed deposits and ask better questions before committing. ### Is the Rule of 72 accurate enough to make investment decisions? It is good for quick answers, not final decisions. The Rule of 72 gives you swift estimates for how long money takes to double or what a product's compounding annual return is. But making investment decisions should always involve deeper study and analysis, so treat it as a first check, not the whole picture.