Investment Calculators

Compound Interest Calculator

See how your regular investments grow thanks to compound interest. Enter your monthly contribution, expected return and time horizon.

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Calculate your monthly mortgage payment, total interest paid and how the balance falls over time.

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Gross and net yield of a buy-to-let property: enter the purchase price, monthly rent and running costs to see the real return.

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How much do you need to live off your portfolio? Calculate your target amount with the 4% rule and how long it will take to get there.

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What will your money actually buy in ten years? See how inflation quietly eats the value of cash left sitting still.

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How long will your portfolio last if you start withdrawing from it? Includes inflation-adjusted withdrawals.

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Invest it all at once, or spread it over months? Compare both approaches side by side on a rising market.

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How much passive income does a dividend portfolio produce — and how does dividend growth compound it over time?

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Turn "it went from X to Y in N years" into a single comparable number: the compound annual growth rate.

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A 1% fee sounds trivial. See what it actually costs you over an investing lifetime.

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How many years until your money doubles? The mental-maths shortcut every investor should know, checked against the exact formula.

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How big should your cash buffer be, and how long will it take to build at your current saving rate?

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Current yield and approximate yield to maturity for a bond bought above or below its face value.

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Know the target and the date? Work out the monthly contribution that actually gets you there.

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