Compound Interest - Make your money work for you


Make your money work!

If you followed the steps in the last blog and now have yourself a bit of extra income in each month, you might be wondering what else you can do with it.

In the realm of personal finance, few concepts are as powerful as compound interest. It's often hailed as the "eighth wonder of the world" and for a good reason. Understanding how compound interest works and harnessing its potential can significantly impact your financial well-being. Let's delve into what compound interest is and explore strategies on how to make it work for you.

What is Compound Interest?

Compound interest is the magical force that allows your money to grow exponentially over time. Unlike simple interest, which is calculated only on the initial amount of money you invested, compound interest takes into account both the principal (the initial amount) and the interest that accumulates on it.

In simple terms, you not only earn interest on your initial investment but also on the interest that has already been added to your principal. This compounding effect is what sets the stage for substantial financial growth over the long term.

The Formula of Compound Interest


The horrible, dry mathsy bit, but it is very important.

The compound interest formula is given by:



  • is the future value of the investment/loan, including interest.
  • is the principal amount (the initial amount of money).
  • is the annual interest rate (as a decimal).
  • is the number of times that interest is compounded per unit .
  • is the time the money is invested or borrowed for, in years.

This means that if you invested £5000 at 5% per year for 5 years, it would look like this.

Year 1 - Capital £0 Input £5000 Interest £0

Year 2 Capital £5,000 Input £0 Interest £250

Year 3 Capital £5,250 input £0 Interest £262.50

Year 4 Capital £5,512.50 input £0 Interest £275.63

Year 5 Capital £5,788.13 Input 0 Interest 289.41

The total at the end of Year 5 is is £6,077.54.

The amount of interest received is £1,077.54.

This example assumes the funds are put in at the end of period and withdrawn at the end of the period. 

In real terms the interest would be prorated for the amount of time it is in there for.

Strategies to Leverage Compound Interest

Start Early, Stay Consistent

The most powerful ally of compound interest is time. The earlier you start investing, the more time your money has to grow. Even if you can only invest a small amount initially, consistent contributions over time can lead to significant wealth accumulation.

Reinvest Your Earnings

Rather than withdrawing the interest earned, reinvest it. This means that not only your initial investment grows over time but also the interest generated continues to earn more interest. It's a cycle that can exponentially boost your wealth.

Take Advantage of Tax-Advantaged Accounts

Consider investing in tax-advantaged accounts like ISAs or a pension. You can use a normal savings account if the amount of interest is likely to be quite small.

These accounts provide a tax-efficient environment for your investments to grow. The power of compound interest combined with tax benefits can lead to substantial wealth accumulation over the long term.

Diversify Your Investments

Spread your investments across different asset classes to reduce risk. A diversified portfolio can help you take advantage of compound interest in various market conditions while minimizing potential losses.

Stay Informed and Adjust

Regularly review your investment portfolio. As your financial goals and market conditions change, adjust your strategy accordingly. Being proactive and informed ensures that you maximize the benefits of compound interest.


Compound interest is a formidable force that can work wonders for your financial future. By understanding its principles and implementing sound investment strategies, you can make this financial phenomenon work for you. Remember, the key is to start early, stay consistent, and let time do the heavy lifting. The magic of compound interest awaits those who are patient, disciplined, and committed to their financial goals. 

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