What is the Rule of 72 money?

Asked by: Arturo Grant  |  Last update: December 15, 2025
Score: 4.1/5 (69 votes)

It's an easy way to calculate just how long it's going to take for your money to double. Just take the number 72 and divide it by the interest rate you hope to earn. That number gives you the approximate number of years it will take for your investment to double.

Does the Rule of 72 really work?

The rule of 72 is only an approximation that is accurate for a range of interest rate (from 6% to 10%). Outside that range the error will vary from 2.4% to 14.0%.

How can I double $5000 dollars in a year?

10+ Ways to Double $5,000
  1. Start a Side Hustle. Perhaps the most common method of making more money is starting a side hustle. ...
  2. Invest in Stocks and Bonds. ...
  3. Day Trade. ...
  4. Save More Money. ...
  5. Buy and Resell Items on Amazon and eBay. ...
  6. Build an eCommerce Business. ...
  7. Sell Your Stuff. ...
  8. Earn cashback When You Shop.

Does money double every 7 years?

The Rule of 72 is a simple way to estimate how long it will take your investments to double by dividing 72 by your expected annual return rate. Higher-risk investments like stocks have historically doubled money faster (around seven years) compared with lower-risk options like bonds (around 12 years).

How long will it take $1000 to double at 6% interest?

You simply take 72 and divide it by the interest rate number. So, if the interest rate is 6%, you would divide 72 by 6 to get 12. This means that the investment will take about 12 years to double with a 6% fixed annual interest rate.

What Is The Rule Of 72

34 related questions found

How much is $10000 for 5 years at 6 interest?

What is the future value of $10,000 on deposit for 5 years at 6% simple interest? Hence the required future value is $13,000.

What is the 8 4 3 rule?

This rule is based on the principle of compounding interest and suggests that if you invest in a mutual fund with a 12 per cent annual return, your investment will double approximately every 8 years. After the first doubling, it will double again in the next 4 years, and then a final time in the subsequent 3 years.

Does a 401k double every 10 years?

One of those tools is known as the Rule 72. For example, let's say you have saved $50,000 and your 401(k) holdings historically has a rate of return of 8%. 72 divided by 8 equals 9 years until your investment is estimated to double to $100,000.

How much money do you need to retire?

A common rule is to budget for at least 70% of your pre-retirement income during retirement. This assumes some of your expenses will disappear in retirement and 70% will be enough to cover essentials. Remember, that's a general guideline, and your needs may vary. Here's more on how much to save for retirement.

How to turn $4000 into $8000?

Buy $4000 worth of goods at wholesale, resell them with a 150% markup. Pay your taxes. Done. Invest some of the money in tools and supplies and provide a service.

How to turn $100 dollars into $1,000 in a month?

10 best ways to turn $100 into $1,000
  1. Opening a high-yield savings account. ...
  2. Investing in stocks, bonds, crypto, and real estate. ...
  3. Online selling. ...
  4. Blogging or vlogging. ...
  5. Opening a Roth IRA. ...
  6. Freelancing and other side hustles. ...
  7. Affiliate marketing and promotion. ...
  8. Online teaching.

How can I double my money asap?

Trading options is one of the fastest ways to double your money — or lose it all. Options can be lucrative but also quite risky. And to double your money with them, you'll need to take some risk. The biggest upsides (and downsides) in options occur when you buy either call options or put options.

What is the $1 rule?

Before buying an item, figure out how many times you'll use it. If it breaks down to $1 or less per use, I give myself the green light to buy it.

How long will it take to increase a $2200 investment to $10,000 if the interest rate is 6.5 percent?

Final answer:

It will take approximately 15.27 years to increase the $2,200 investment to $10,000 at an annual interest rate of 6.5%.

How to double 10k quickly?

15 Legit Ways How to Double $10k Quickly (Without Dangerous Get Rich Schemes)
  1. Retail Arbitrage.
  2. Swing Trade Stocks.
  3. Invest in High-Growth Stocks.
  4. Cryptocurrency Investing.
  5. Start an Airbnb Business.
  6. Lend on Peer-to-Peer Platforms.
  7. Invest in High-Yield Dividend Stocks.
  8. Fix and Flip Real Estate.

What's a penny doubled for 30 days?

Frequently Asked Questions. How much money will I have if I double a penny for 30 days? At the end of 30 days, if you double a penny every day, you will have $5,368,709.12. Why do most people choose $2 million over a penny doubled for 30 days?

Will two dollar bills be worth something one day?

If the $2 bill was minted and printed before 1976, it would likely be worth more than its face value on the collectibles market. In some cases, it might be worth only $2.25. The highest value is $4,500 or more for uncirculated notes from 1890, although most of those bills range from $550 to $2,500.

How many times do you need to double your money to become a millionaire?

If you invested £1 in an account that doubled its contents every day, it would take 20 days to become a millionaire. The reason for this exponential growth is that each day, the amount in the account doubles, leading to a rapid increase in wealth.

How much do I need in a 401k to get $2000 a month?

According to the $1,000 per month rule, retirees can receive $1,000 per month if they withdraw 5% annually for every $240,000 they have set aside. For example, if you aim to take out $2,000 per month, you'll need to set aside $480,000.

What is the rule of 7 retirement?

The 7 Percent Rule is a foundational guideline for retirees, suggesting that they should only withdraw upto 7% of their initial retirement savings every year to cover living expenses. This strategy is often associated with the “4% Rule,” which suggests a 4% withdrawal rate.

How to invest $2000 dollars and double it?

The classic approach to doubling your money is investing in a diversified portfolio of stocks and bonds, which is likely the best option for most investors. Investing to double your money can be done safely over several years, but there's a greater risk of losing most or all your money when you're impatient.

What is the 888 hour rule?

The 8-8-8 Rule would be the best place to start if you want to enhance your creativity. This rule states that you should dedicate eight hours to sleep, eight hours to work, and eight hours to leisure activities. By following this schedule, your body will be ready to focus on creative tasks when it is time for leisure.

What is the 15-15-15 rule?

The 15-15-15 rule suggests investing 15% of your income for 15 years in a mutual fund with 15% annual returns. Compounding is the process of reinvesting earnings to generate more returns. The longer you stay invested, the greater the compounding effect. =

What is the rule 434?

Jury Selection. (a) Impaneling Juries. In criminal cases the parties shall pass upon and accept the jury in panels of four, commencing with the State, unless the court, in its discretion, directs otherwise, and alternate jurors shall be passed upon separately.