02/17/2021
How long does it take for invested money to double in value? Less time than you think: enter the Rule of 72. 🕰💵
Properly-invested money should take about 7-10 years to double. Money in a bank savings account could take over 300 YEARS to double. That’s the power of wise investing. Check it out below.
It’s easy math: [72] divided by [percent return your money will earn per year] = approximately how many years it takes your money to double.
EXAMPLE 1: You invest $3,000 in a low-cost index mutual fund mirroring performance of the S&P 500 stock index, earning 7.2% return per year. 72 divided by 7.2 = 10 years. In 10 years, your $3,000 grows to $6,000 without you doing anything but watching. Assuming the same rate of return, 10 years later, your $6,000 has become $12,000, and so forth. (The S&P 500 has returned an average of 10.2% since the index was established in 1926.)
EXAMPLE 2: You stick $3,000 into a savings account at the bank you’ve used for years, who pays 0.2% interest. 72 divided by 0.2 = 360 years. At that rate, it would take you 360 years to turn your $3,000 into $6,000.
This doesn’t account for regular contributions to your investments, which can cause them to double in value even faster, and then some. It’s staggering. Get with a professional who can help you invest, seek advice, don’t invest in anything you don’t understand, and start now.