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FIRE Calculator

Enter your annual spending and investments to see your FIRE number and progress.

Estimate for general information only — not financial, tax or legal advice. Always check the official figures (GOV.UK / HMRC) or speak to a qualified adviser before making decisions.

FIRE — Financial Independence, Retire Early — uses a simple rule of thumb: once your invested pot reaches about 25 times your annual spending, you could in theory withdraw 4 percent a year to live on. This tells you that target number and how far along you are. It is a guide, not a guarantee: markets, inflation and your spending all vary.

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Frequently asked questions

What is the 4% rule?

It suggests you can withdraw 4 percent of your portfolio in the first year of retirement, adjusting for inflation after, with a good chance the pot lasts 30+ years. Hence a target of 25× spending.

Is the 4% rule safe?

It is a widely used starting point, not a promise. Long retirements, poor early returns or high inflation can require a more cautious withdrawal rate.