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  • Writer's pictureDom Hartland

The Power of Compounding Interest and How It Can Help You Achieve Your Financial Goals

Updated: Sep 28, 2023

Compound interest is a powerful tool that allows your investment returns to grow exponentially over a period of time. It refers to the process of reinvesting an investment's earnings or returns to generate further returns. Earnings can be derived from dividends, interest, or any other form of income distribution earned by an investment.

Visual Representation of Compounding Interest

How Compounding Interest Works

The concept of compounding interest is quite simple yet powerful: when you invest your money, the returns you earn are reinvested, creating a snowball effect of growth. As time goes by, these reinvested returns generate even more returns, leading to exponential growth in your investment. The longer you stay invested and the higher the rate of return, the more impactful compounding becomes. Its potential effects on your investments can be dramatic.

Compounding Interest Examples and Scenarios

Here's an example of how you can use compounding interest to your advantage. Assume you have a $20,000 lump-sum investment that earns 10% per year; the $2,000 you would make would increase your total to $22,000. If you earn 10% the following year, you will have $2,200 added to your balance, and so on.

Now, let's use this example to see what happens if you withdraw the return every year or if you don't invest at all.

A table showing the power of compounding interest

For illustration purposes only. This projection is not a guarantee of future results and actual income may vary. Investing involves risk.

The table above shows the results of three different investment approaches over a 10-year period. The first way is to reinvest your profits and let them grow over time, the second is to withdraw your earnings every year, and the third is to save in a bank account.

We can see that after 10 years, the investment with the reinvested earnings each year, has grown to $51,875. The investment where the earnings are withdrawn each year has the same ending balance of $20,000, but if we add the $20,000 which has been withdrawn, we get a total of $40,000 for the entire period. The difference between reinvesting and withdrawing is $11,875 or almost 30%, which is a significant amount, particularly over time.

On the other hand, bank savings account with a 1% annual return has a balance of $16,438.85 adjusted for inflation. The sad reality is that when you leave your money in a bank account with a low-interest rate, you might think that you are keeping your money safe. However, if the inflation rate is higher than the interest rate of your bank, the value of your money is actually decreasing over time.

Advantages and Disadvantages of Compound Interest:

While compound interest is indeed generally helpful there may be times when it is not appropriate for you. Let's look at the pros and cons of compounding interest:

Pros of Compound Interest:

1. Accelerated growth: Compounding interest enables your investments or savings to grow at an accelerated rate over time.

2. Passive income generation: Compounding interest can create a passive income stream. As your investments or savings grow, the interest or returns generated can become a consistent source of income.

3. Long-term financial security: Compounding interest can help you build a robust financial foundation for the long term. Regular contributions and the compounding effect can help you accumulate a profitable portfolio, providing a safety net for retirement or unexpected expenses.

Cons of Compound Interest:

Generally, you can earn more money every year just by reinvesting your earnings. That is why it is recommended to start investing as early as you can to maximize the power of compounding. The earlier you start investing, the longer your money has to compound. Even small investments made early in life can grow into significant sums over time.

Another option you could do is simply topping-up your current investments, especially now that interest rates in the United States are showing signs of easing. Also, if you are investing monthly, it is best to be consistent. You may want to check for additional reference James Hartland's article on Dollar Cost Averaging.

If you're looking to build long-term wealth, the power of compounding can be a game-changer. By reinvesting your earnings and letting them grow over time, you can potentially achieve significant gains and reach your financial goals faster. Don't wait any longer to begin investing and saving for your future. Start today with Astra and take advantage of the power of compounding to build a strong financial foundation for yourself and your family. We provide a wide and diversified selection of products that can be adjusted to the specific requirements of each client. Remember, every small step you take towards investing early can make a big difference in the long run.

Connect with Astra today to learn more about compounding and other investment opportunities. Our financial advisers will guide you toward achieving your financial goals. You may also subscribe to our email list for more interesting articles straight to your inbox on investment opportunities.


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