What is the rule your money doubles every 10 years?

Asked by: Florian Kemmer  |  Last update: October 16, 2025
Score: 4.1/5 (18 votes)

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).

What return do you need to double your money in 10 years?

This means, at a 5% rate of return, your investment would roughly double in 14.4 years. 7% Rate of Return: Similarly, for an average return of 7%, it would take a little over 10 years for your money to double.

What is the law of doubling money?

The Rule of 72 is an easy way to calculate how long an investment will take to double in value given a fixed annual rate of interest. Dividing 72 by the annual rate of return gives investors an estimate of how many years it will take for the initial investment to duplicate.

How much will $1000 grow in 10 years?

As you will see, the future value of $1,000 over 10 years can range from $1,218.99 to $13,785.85.

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 to Double Your Money Using The Rule of 72

23 related questions found

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 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.

Can I live off interest on a million dollars?

Yes, it's possible to retire on $1 million today. In fact, with careful planning and a solid investment strategy, you could possibly live off the returns from a $1 million nest egg.

How much will 100K be worth in 30 years?

The amount of $100,000 will grow to $432,194.24 after 30 years at a 5% annual return. The amount of $100,000 will grow to $1,006,265.69 after 30 years at an 8% annual return. Where, FV = Future value of the amount invested today on maturity.

Is $1000 a month in a 401k good?

Bottom Line. If you put $1,000 into investments every month for 30 years, you can probably anticipate having more than $1 million by the end, assuming a 6% annual rate of return and few surprises.

What is the golden rule of money?

1. Spend less than you make. This may seem obvious, and boring, but spending less than you make is by far the biggest key to financial success. If you struggle with spending, focus on this one rule until you're at a point where you have positive cash flow at the end of the month.

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.

What is the 50 30 20 rule?

Those will become part of your budget. The 50-30-20 rule recommends putting 50% of your money toward needs, 30% toward wants, and 20% toward savings. The savings category also includes money you will need to realize your future goals.

Does a 401k double every 7 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.

What is the 72 rule in finance?

What is the Rule of 72? Here's how it works: Divide 72 by your expected annual interest rate (as a percentage, not a decimal). The answer is roughly the number of years it will take for your money to double. For example, if your investment earns 4 percent a year, it would take about 72 / 4 = 18 years to double.

How much money do I need to invest to make $4000 a month?

Making $4,000 a month based on your investments alone is not a small feat. For example, if you have an investment or combination of investments with a 9.5% yield, you would have to invest $500,000 or more potentially. This is a high amount, but could almost guarantee you a $4,000 monthly dividend income.

What if I invested $1000 in S&P 500 10 years ago?

S&P 500 Investment Time Machine

Imagine you put $1,000 into either fund 10 years ago. You'd be up to roughly 126.4% — or $3,282 — from VOO and 126.9% — or $3,302 — from SPY. That's not exactly wealthy, but it shows how you can more than triple your money by holding an asset with relatively low long-term risk.

How long will $1,000,000 last in retirement?

For example, if you have retirement savings of $1 million, the 4% rule says that you can safely withdraw $40,000 per year during the first year — increasing this number for inflation each subsequent year — without running out of money within the next 30 years.

How much will a 1 million dollar annuity pay?

At age 60, a $1 million annuity could pay around $62,000 annually, but delaying payouts until age 65 could increase the yearly payout to approximately $90,000. You may find drawbacks such as limited access to funds, penalties for early withdrawal, fees and inflation reducing the purchasing power of your payments.

How many people have $1,000,000 in retirement savings?

Just 16% of retirees say they have more than $1 million saved, including all personal savings and assets, according to the recent CNBC Your Money retirement survey conducted with SurveyMonkey. In fact, among those currently saving for retirement, 57% say the amount they're hoping to save is less than $1 million.

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 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.

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.