Free compound interest calculators, ISA guides, and investing tools built for UK savers and investors. No sign-up. No jargon.
Enter your numbers and get an instant result — no sign-up required.
See exactly how your lump sum and monthly contributions grow over any time period. Includes a year-by-year breakdown and chart.
Calculate now →Model your Stocks and Shares ISA over time. Compare the difference between a Cash ISA and investing in a global index fund.
Model your ISA →How much do you need to retire? Enter your target income and retirement date to see exactly how much to save each month.
Plan retirement →In-depth, jargon-free finance guides written for UK readers.
Everything you need to understand about the most powerful concept in personal finance — explained clearly with UK examples.
Low fees, broad diversification, proven returns. We compare the top index funds and ETFs available to UK investors right now.
With a £20,000 annual allowance, choosing the wrong ISA type could cost you thousands. Here's exactly how to decide.
Built specifically for UK investors — not a generic American tool with dollar signs.
All examples use pounds, UK tax wrappers (ISAs, SIPPs), and UK investment platforms. No confusing US references.
No sign-up, no email required. Enter your numbers and get a full breakdown in seconds, including a visual chart.
Every guide is written to be understood without a finance degree. We explain the maths behind the numbers.
Every tool and guide on this site is free to use. We earn from advertising — your data is never sold.