UK Compound Calculator is a free personal finance resource built specifically for UK savers and investors. Our goal is simple: to give people the tools and knowledge to make informed decisions about their money — without jargon, without sales pressure, and without a financial adviser's hourly rate.
Our compound interest calculator lets you model how any investment grows over time. Enter your starting amount, monthly contribution, annual return rate, and time horizon. Get an instant result — including a year-by-year breakdown and a visual chart — with no sign-up required.
We publish detailed, UK-specific guides on topics including compound interest, index fund investing, ISAs, and retirement planning. All guides are written to be understood without a finance degree, and all UK-specific examples use pounds, UK tax wrappers, and UK investment platforms.
UK Compound Calculator is free to use and always will be. We earn revenue through display advertising served by Google AdSense. Advertisements are clearly labelled and are not endorsed by us. We do not allow advertisers to influence our content or recommendations.
We may also earn affiliate commissions if you click through to a financial platform and open an account. Any such links are disclosed, and we only link to platforms we consider reputable and regulated by the FCA. Affiliate income does not affect our editorial independence.
We welcome feedback, corrections, and questions. If you have spotted an error in one of our guides, or have a suggestion for a new calculator or topic, we would love to hear from you.
Email us →UK Compound Calculator is an informational website. The content published here is for educational purposes only and does not constitute financial advice. Calculator results are estimates based on the inputs provided and fixed assumptions; actual investment returns will vary. Past performance of any investment does not guarantee future results. The value of investments can fall as well as rise. Tax rules are subject to change. Always consult a qualified, FCA-regulated financial adviser before making investment decisions.