Interactive Investment Tool

Calculate how much your investments could be worth. Change the numbers to match your situation and see your potential returns instantly.

How to Use This Investment Calculator

Our free investment calculator helps you visualize how your money could grow over time. Simply adjust the sliders to match your situation and watch your potential returns update instantly. Whether you’re planning for retirement, saving for a house deposit, or building long-term wealth, this tool shows you the power of consistent investing.

Understanding Your Results

Total Contributed: This is the total amount you’ll personally invest – your initial lump sum plus all your monthly contributions over the years.

Investment Growth: This represents the profit your investments generate through compound interest and market returns. This is the “free money” your investments earn for you.

Total Fees Paid: Investment fees might seem small, but they significantly impact your long-term returns. Even a 1% difference in annual fees can cost you thousands over decades.

Final Value: Your total portfolio value combining your contributions and investment growth, minus fees.

The Power of Compound Interest

Compound interest is often called the eighth wonder of the world – and for good reason. When your investments generate returns, those returns start generating their own returns. Over time, this snowball effect can dramatically grow your wealth.

For example, if you invest £5,000 initially and add £200 monthly for 20 years with a 7% annual return, you could end up with over £115,000 – even though you only contributed £53,000 yourself. The remaining £62,000 came from compound growth.

Tips for Maximising Your Returns

Start Early: Time is your greatest asset when investing. Starting even five years earlier can mean tens of thousands more in your final portfolio.

Invest Consistently: Regular monthly contributions help you buy more shares when prices are low and fewer when prices are high – a strategy called pound-cost averaging.

Keep Fees Low: Choose low-cost index funds or ETFs where possible. A 2% annual fee versus a 0.5% fee could cost you over 30% of your final portfolio value over 30 years.

Stay Invested: The stock market has ups and downs, but historically it trends upward over long periods. Staying invested through market dips often yields better results than trying to time the market.

Ready to Start Investing?

Now that you’ve seen what’s possible, learn the fundamentals with our beginner’s guides:

• What is a Stock? – Understand the basics
• How to Buy Your First Stock – Step-by-step guide
• Understanding Risk and Strategy – Protect your investments

Remember, this calculator provides estimates based on assumptions about future returns. Actual results will vary, and past performance doesn’t guarantee future results. Always do your own research and consider speaking with a financial advisor before making investment decisions.

Compound Interest Calculator by Investor.gov – U.S. government’s official compound interest tool for comparison.