Close this search box.

Table of Contents



Compounding in finance refers to the process by which an investment’s earnings, from either capital gains or interest, are reinvested to generate additional earnings over time. This growth, calculated by exponential function, is based on both the initial principal and the accumulated earnings from preceding periods. Compounding can be viewed as interest on interest and will make a sum grow at a faster rate than simple interest, which is calculated only on the principal amount.


The phonetic transcription of “Compounding” is /kɒmˈpaʊndɪŋ/ in the International Phonetic Alphabet (IPA).

Key Takeaways

  1. Power of Compounding: Compounding refers to the process of earning interest on both the original amount of money saved or invested (called the principal) and on any interest that has previously been added. Over time, compounding can significantly increase your savings or investments.
  2. Time matters: The more time you give your money to grow, the more you are able to take advantage of the compounding effect. Consequently, it’s often said that it’s not about the timing of the market, but the time in the market that matters most for investors.
  3. Regular Investments: Regular contributions to a savings or investment account will also benefit from compounding. Each new contribution represents more money that will earn interest, and that interest is added to the principal, which will also earn interest. This is why it’s so beneficial to invest or save on a regular basis, rather than in sporadic lump sums.


Compounding is a critical concept in business and finance due to its potential to significantly increase the growth of an investment or loan over time. It refers to the process where the value of an investment increases because the earnings on an investment, both capital gains and interest, earn interest as time passes. This concept results in exponential growth, rather than simple linear growth, because the returns that an asset or investment generates are reinvested to generate their own returns. Hence, understanding compounding can aid investors and borrowers in making informed decisions, as it influences the outcomes of their investments or loans, underlining the significance of long-term financial planning.


Compounding, essentially, defines the process where the value of an original investment or principal grows because the earnings that were accrued from it are reinvested. This signifies that the principal sum of money grows exponentially over time because the profit made is continually invested back, thus multiplying the principal amount at an accelerating rate. It is an important concept within finance because it magnifies the growth potential of an investment or a debt over a certain period.Compounding serves as a powerful tool within finance, particularly in the realm of investment and savings, because it can significantly alter the amount of profit gained or interest accrued over time. For investors, this means that by regularly reinvesting their earnings, they can amplify their beneficial returns and grow their investment funds substantially in the long run. On the other hand, when compounding is applied to a loan or debt, it can cause the owed amount to snowball if not promptly addressed. Thus, understanding compounding is vital for managing investments and debts effectively.


1. Savings Account: One of the most familiar instances of compounding in the real world is a savings account at a bank. When you deposit money into a savings account, your bank pays interest on the balance. This interest is added to your account balance, and then next time interest is calculated, it’s calculated based on this new, higher balance. This is compound interest — interest earned not only on your original deposit but on the interest you’ve previously received as well.2. Credit Card Debt: Compounding is also an important concept in credit card debt. The interest on the debt compounds, meaning that you’re charged interest on the total debt amount, including previously accrued interest. For example, if you have a credit card balance of $1,000 with an annual interest rate of 18%, by the end of the year, you would owe $1,180. If you didn’t pay off any of that balance, the next year you would owe interest on $1,180, not the original $1,000. This demonstrates how compounding can work against you.3. Investments: When you invest in something like stocks, bonds, or mutual funds, compounding comes into play if you reinvest any earnings, such as dividends or interest. For example, say you have investment that pays a 5% yearly dividend. If you take those dividends and reinvest them back into the original investment, next year you’ll earn dividends not just on your initial investment, but also on the dividends you reinvested. Over time, compounding can significantly boost the growth of your investments.

Frequently Asked Questions(FAQ)

What is compounding in finance?

Compounding in finance refers to the process where the value of an investment increases because the earnings on an investment, both capital gains and interest, earn interest as time passes. This is often called ‘interest on interest’.

How does compounding work?

Compounding works by letting the returns on an investment compound over time. It is the reinvestment of earnings at the same rate of return to constantly grow the principal amount, year after year.

What is compound interest?

Compound interest is the interest calculated on the initial principal and also on the accumulated interest of previous periods of a deposit or loan.

What is the difference between simple interest and compound interest?

The main difference between simple and compound interest is that simple interest is calculated only on the initial amount (principal) that was deposited or borrowed, while compound interest is calculated on the initial amount AND the accumulated interest.

How does the frequency of compounding affect the future value?

The frequency of compounding has a direct correlation with the future value of an investment or loan. The higher the number of compounding periods, the greater the compound interest. This means that the more times the interest is compounded in a year, the higher the overall interest earned or paid will be.

What is the formula to calculate compound interest?

The compound interest formula is A = P (1 + r/n) ^ (nt). Here, P stands for the principal amount, r for the annual interest rate, n for the number of times that interest is compounded per year, and t for the time the money is invested or borrowed for in years.

Can compounding work against me?

Yes. While compounding can result in exponential growth of your investments, it can also work against you if you have loans or debt. The compound interest on borrowed money can accumulate rapidly, increasing the total amount of debt.

How can I benefit from compounding?

The best way to benefit from compounding is to start investing early and regularly. This allows your investments more time to generate returns, which then get reinvested and generate their own returns.

Related Finance Terms

Sources for More Information

About Our Editorial Process

At Due, we are dedicated to providing simple money and retirement advice that can make a big impact in your life. Our team closely follows market shifts and deeply understands how to build REAL wealth. All of our articles undergo thorough editing and review by financial experts, ensuring you get reliable and credible money advice.

We partner with leading publications, such as Nasdaq, The Globe and Mail, Entrepreneur, and more, to provide insights on retirement, current markets, and more.

We also host a financial glossary of over 7000 money/investing terms to help you learn more about how to take control of your finances.

View our editorial process

About Our Journalists

Our journalists are not just trusted, certified financial advisers. They are experienced and leading influencers in the financial realm, trusted by millions to provide advice about money. We handpick the best of the best, so you get advice from real experts. Our goal is to educate and inform, NOT to be a ‘stock-picker’ or ‘market-caller.’ 

Why listen to what we have to say?

While Due does not know how to predict the market in the short-term, our team of experts DOES know how you can make smart financial decisions to plan for retirement in the long-term.

View our expert review board

About Due

Due makes it easier to retire on your terms. We give you a realistic view on exactly where you’re at financially so when you retire you know how much money you’ll get each month. Get started today.

Due Fact-Checking Standards and Processes

To ensure we’re putting out the highest content standards, we sought out the help of certified financial experts and accredited individuals to verify our advice. We also rely on them for the most up to date information and data to make sure our in-depth research has the facts right, for today… Not yesterday. Our financial expert review board allows our readers to not only trust the information they are reading but to act on it as well. Most of our authors are CFP (Certified Financial Planners) or CRPC (Chartered Retirement Planning Counselor) certified and all have college degrees. Learn more about annuities, retirement advice and take the correct steps towards financial freedom and knowing exactly where you stand today. Learn everything about our top-notch financial expert reviews below… Learn More