FIRE Guide – Financial Independence, Retire Early UK

Financial Independence, Retire Early - FIRE - is built around one idea: if your investments generate enough income to cover your living costs, work becomes optional. It is not about becoming a millionaire or never spending money. It is about building enough of a financial cushion that you are no longer dependent on a salary to live the way you want.

This section covers the full FIRE picture: how the maths works, what different approaches look like (from LeanFIRE to CoastFIRE), how to calculate your own number, and what building toward it looks like from a UK perspective - including ISAs, SIPPs, and tax-efficient investing.

Whether you are just curious about the concept or actively planning for it, the goal is to give you an honest, grounded view of what FIRE actually involves. Start with the FIRE Calculator to find your number and project your timeline.