How long does it take to double money at 8.5 percent?
Answer and Explanation:
For example, if an investment scheme promises an 8% annual compounded rate of return, it will take approximately nine years (72 / 8 = 9) to double the invested money. Note that a compound annual return of 8% is plugged into this equation as 8, and not 0.08, giving a result of nine years (and not 900).
Given a 9% return, the number of years to double your money is 72 / 9 = 8. To quadruple your money is the same as doubling it twice, so it would take 8 * 2 = 16 years.
Expert-Verified Answer
So, at 8.5 percent interest, it takes approximately 16.94 years to quadruple your money.
How the Rule of 72 Works. For example, the Rule of 72 states that $1 invested at an annual fixed interest rate of 10% would take 7.2 years ((72/10) = 7.2) to grow to $2. In reality, a 10% investment will take 7.3 years to double (1.107.3 = 2).
Savers can now earn 9pc in savings interest, after the only savings account to beat inflation launched – but there's a catch. Saffron Building Society has launched an account with a market-leading 9pc interest rate, making it the only rate able to outpace the current 8.7pc rate of inflation.
We saw in the previous section that investing in the S&P 500 has historically allowed investors to double their money about every six or seven years. Your initial $1,000 investment will grow to $2,000 by year 7, $4,000 by year 14, and $6,000 by year 18.
The Rule of 69 states that when a quantity grows at a constant annual rate, it will roughly double in size after approximately 69 divided by the growth rate. The Rule of 69 is derived from the mathematical constant e, which is the base of the natural logarithm.
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. This calculator flips the 72 rule and shows what interest rate you would need to double your investment in a set number of years.
The Rule of 72 is a calculation that estimates the number of years it takes to double your money at a specified rate of return. If, for example, your account earns 4 percent, divide 72 by 4 to get the number of years it will take for your money to double.
Is 8.5 a high interest rate?
The average ranges from 3% to 4.5% for new cars—partly because new car buyers tend to have better-than-average credit. But the average used car loan interest rate is significantly higher, at roughly 8.5%. You may receive a different offer depending on your credit score and the lender.
Hence it takes 8.74 years to double the money.
If your money is in a savings account earning 3% a year, it will take 24 years to double your money (72 / 3 = 24).
It is generally assumed that a good investment will double roughly every 7 years. But that means your IRA should be invested in good investments. Some IRAs don't offer very good investment options and some people don't make very wise investment choices.
Let's say your initial investment is $100,000—meaning that's how much money you are able to invest right now—and your goal is to grow your portfolio to $1 million. Assuming long-term market returns stay more or less the same, the Rule of 72 tells us that you should be able to double your money every 7.2 years.
For example, if your investment earns 6% per year on average, you would take 72 divided by 6 to determine that it will take 12 years for your money to double. Based on the above, you would need to earn just over 10% per year to double your money in a little over seven years.
Having extra cash in the bank is an excellent way to plan ahead for unexpected financial concerns. For many people, $10,000 is a solid amount of money to have in their emergency fund. If you're saving for emergencies, you should keep your money in a high-yield savings account to maximize the interest you earn.
Which banks offer 7% interest savings accounts? Only two financial institutions, Landmark Credit Union and Alpena Alcona Area Credit Union, currently offer 7% interest.
Using $10,000 in savings to invest or pay down debt is a financially savvy decision. A few of the best investment options include increasing your 401(k) contribution and opening an IRA or 529. Using your savings to make additional payments on your mortgage may make financial sense.
$10,000 invested in the S&P 500 at the beginning of 2000 would have grown to $32,527 over 20 years — an average return of 6.07% per year.
What was the worst 30 year return on the stock market?
The lowest annual return over any 30 year period going back to 1926 was 7.8%. That's what you got had you invested at the peak of the Roaring 20s boom in September 1929. You would have lost more than 80% of your investment in the ensuing crash and still made more than 850% in total over 30 years.
- Get a 401(k) match. Talk about the easiest money you've ever made! ...
- Invest in an S&P 500 index fund. An index fund based on the Standard & Poor's 500 index is one of the more attractive ways to double your money. ...
- Buy a home. ...
- Trade cryptocurrency. ...
- Trade options.
You can also run it backwards: if you want to double your money in six years, just divide 6 into 72 to find that it will require an interest rate of about 12 percent.
The Rule of 7 is a decades-old idea in marketing that suggests consumers need to see an ad at least 7 times before they're ready to make a purchase.
t = ln(100,000/5,000)/0.097 ≈ 12.35 years Using the formula for continuous compounding interest, it will take approximately 12.35 years for a $5,000 investment to grow to $100,000 at an interest rate of 9.7% compounded continuously.
