FIRE method: Could it help you retire early?

Wealth planning
Insights

Find out what the FIRE movement is, what you can learn from it, and some of the potential pitfalls to be aware of.

24 December 2025 | 3 minute read

FIRE – ‘Financial Independence, Retire Early’ – is a movement where people save aggressively with the aim of retiring decades earlier than traditional retirement age. Quitting work at age 40 might seem like the dream, but it’s a tough goal that might not be right for everyone.

Here, we explain what FIRE is, what you can learn from it, and some of the potential pitfalls to be aware of. 

   


 
     
Download: A guide to saving for retirement

Jam-packed with essential information on how to save for a more comfortable life after work.

Download now


     
     

What is FIRE?

The FIRE movement was inspired by the book Your Money or Your Life, written by Vicki Robin and Joe Dominguez in the early 1990s, which aims to help people gain control of their money and “make a life, rather than just make a living”1. The book contains a nine-step programme to achieving financial independence, which is defined as having an income sufficient for your basic needs and comforts from a source other than paid employment2. It has since spawned a multitude of websites, blogs and books focusing on how people can reach financial independence and retire early. 

Financial independence doesn’t necessarily mean giving up work entirely. While many FIRE followers have quit the nine-to-five, they have then gone on to earn money in other ways. 

As the website Playing With Fire states3: “When we say that someone is retired, what we are really saying is that they have the option to not work. Instead of retiring FROM something, many people within the FIRE community choose to retire TO something.”

How does FIRE work?

According to most FIRE how-to guides, you need to save up around 25 times your annual expenses to achieve financial independence. This is known as your ‘FIRE number’. So, if you expect to spend £20,000 a year when you retire, you’d need to save around £500,000. This calculation is based on the assumption that you withdraw 4% of your savings each year in retirement – a withdrawal rate that the FIRE method believes is sustainable if you invest. 

To build up a large savings pot quickly, FIRE followers will often save 50% to 75% of their income, drastically cutting their expenses in order to do so. The FIRE movement also encourages people to build up emergency savings to cover three to six months’ worth of essential expenditure; grow their savings by investing; increase their income through freelance work or a side hustle; and pay off their mortgage. 

What are the benefits of the FIRE method?

The FIRE method encourages people to fully engage with their money and their goals. So, if you’re someone who has historically taken a ‘head in the sand’ approach to saving and investing, it may be worth trying to learn from the movement’s principles. 

Some of the steps involved in working towards financial independence could also help you to improve your financial wellbeing. For example, holding six months’ worth of essential expenditure in an easy-access savings account is one of the cornerstones of financial planning. It could help you pay for unexpected emergencies, such as your boiler or car breaking down, without having to resort to loans or overdrafts.

Saving for your future is also wise, as you might not be able to entirely rely on the state to fund your desired retirement. Meanwhile, investing helps to mitigate the impact of inflation on your long-term savings, giving your money the opportunity for real growth over time and helping you reach your goals more quickly.

What are the potential pitfalls?

The FIRE method does come with some potential pitfalls. The biggest risk is that you retire early and discover your savings pot isn’t sufficient to fund what could be an extremely long retirement. Official figures show a 40-year-old UK woman has an average life expectancy of 87 and has a one in four chance of living to 964. If you retire at age 40, your money might need to last for another 50 years. 

It’s worth noting that the 4% withdrawal rule was developed using U.S. market performance data from 1926 to 1992 and targeted at retirees with a 30-year time horizon. For a UK investor in the 2020s, with a 50-year time horizon, there’s a real risk that relying on the 4% rule results in savings being depleted too quickly.

Bear in mind that you can’t access money inside personal pensions until age 55 (rising to 57 from April 2028). If you’re planning to retire at 40, you would need to have saved a large chunk of money in Individual Savings Accounts (ISAs). While ISAs are a really tax-efficient way of saving and investing, they don’t have quite as many perks as pensions. Without a pension, you’ll miss out on employer pension contributions and tax relief on personal pension contributions, both of which can supercharge how much money you have in retirement.

In the more immediate term, it’s important to consider the sacrifices you might have to make in order to achieve what is a very aggressive savings rate. Treating yourself occasionally, whether that’s through eating out, going on holiday or heading to the spa, is by no means a bad thing. After all, life is for living and the FIRE method could make for a rather dull decade or so. It’s also worth thinking about the impact it could have on your other goals; if you have or are planning to have children, for example, it might not be possible to achieve financial independence while also saving for their future.

Next steps

If retiring early is an important goal for you, your best bet is to speak to a wealth manager. By understanding your financial circumstances and commitments, and taking into account expected investment returns and inflation, they’ll be able to determine whether your target retirement date is achievable. They’ll also be able to advise on whether it makes sense to pay off your mortgage or invest, how much investment risk you should be taking on, and how to balance your dreams of an early retirement with your other goals.

Find out more from our dedicated support team by calling us on 020 7246 1111. Opening hours are Monday to Friday 9am to 5pm.

https://vickirobin.com/books/your-money-or-your-life/
https://yourmoneyoryourlife.com/book-summary/
https://www.playingwithfire.co/whatisfire
https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare…
 


The value of investments, and any income from them, can fall and you may get back less than you invested. Tax treatment depends on the individual circumstances of each client and may be subject to change in the future. You should always check the tax implications with an accountant or tax specialist. Information is provided only as an example and is not a recommendation to pursue a particular strategy. Information contained in this document is believed to be reliable and accurate, but without further investigation cannot be warranted as to accuracy or completeness.  


This publication has been issued by RBC’s Wealth Management international division in the United Kingdom and the Channel Islands which is comprised of an international network of RBC® companies located in these jurisdictions and includes RBC Europe Limited and Royal Bank of Canada (Channel Islands) Limited. You should carefully read any risk warnings or regulatory disclosures in this publication or in any other literature accompanying this publication or transmitted to you by RBC’s Wealth Management international division.

This publication has been compiled from sources believed to be reliable, but no representation or warranty, express or implied is made to its accuracy, completeness or correctness. All opinions and estimates contained in this report are judgements as of the date of this report, are subject to change without notice and are provided in good faith but without legal responsibility. This report is not an offer to sell or a solicitation of an offer to buy any securities. Past performance is not a guide to future performance, the value of investments and income arising can go down, future returns are not guaranteed, and an investor may not get back the amount originally invested. Countries throughout the world have their own laws regulating the types of securities and other investment products and services which may be offered to their residents, as well as the process for doing so. As a result, any securities or services discussed in this report may not be eligible for sale in some jurisdictions. This report is not, and under no circumstances should be construed as, a solicitation to act as a securities broker or dealer in any jurisdiction by any person or company that is not legally permitted to carry on the business of a securities broker or dealer in that jurisdiction. Nothing in this report constitutes legal, accounting or tax advice or individually tailored investment advice.

This material is prepared for general circulation and does not have regard to the particular circumstances or needs of any specific person who may read it. The investments or services contained in this report may not be suitable for you and it is recommended that you consult an independent investment advisor if you are in doubt about the suitability of such investments or services. To the full extent permitted by law none of the entities which comprise the international division of RBC Wealth Management nor any of their affiliates, nor any other person, accepts any liability whatsoever for any direct or consequential loss arising from any use of this report or the information contained herein. No matter contained in this document may be reproduced or copied by any means without the prior consent of RBC Wealth Management.

Clients of RBC Europe Limited may be entitled to compensation from the UK Financial Services Compensation Scheme (FSCS) if it cannot meet its obligations. This depends on the type of business and the circumstances of the claim. For further information about the compensation provided by the FSCS scheme (including the amounts covered and eligibility to claim) please refer to the FSCS website FSCS.org.uk. Please note only compensation related queries should be directed to the FSCS. Royal Bank of Canada (Channel Islands) Limited is not covered by the UK Financial Services Compensation Scheme.
RBC Europe Limited is registered in England and Wales with company number 995939. Its registered office is 100 Bishopsgate, London EC2N 4AA. RBC Europe Limited is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority.

Royal Bank of Canada (Channel Islands) Limited (“the Bank”) is regulated by the Jersey Financial Services Commission in the conduct of deposit taking, fund services and investment business in Jersey. The Bank’s general terms and conditions are updated from time to time and can be found at https://www.rbcwealthmanagement.com/en-uk/terms-and-conditions. Registered office: Gaspé House, 66-72 Esplanade, St. Helier, Jersey JE2 3QT, Channel Islands. Deposits made with Royal Bank of Canada (Channel Islands) Limited in Jersey are not covered by the UK Financial Services Compensation Scheme. Royal Bank of Canada (Channel Islands) Limited is a participant in the Jersey Bank Depositors Compensation Scheme (the Scheme). The Scheme aims to provide protection for eligible depositors of up to £50,000. For further information about the Scheme and to understand your eligibility, please refer to www.jrdca.org.je/jdcs.

Investment services offered by the Bank are not covered by an investor compensation scheme as there is currently no such scheme operating in Jersey, however ‘eligible deposits’ held pursuant to investment services may be protected under the Bank Depositors Compensation Scheme described above – for more information see the Bank’s general terms and conditions. Some of the products that the Bank might recommend to you could be registered overseas and may be covered by a local compensation scheme. Your investment counsellor will provide you with the details of any overseas compensation schemes (where applicable) at the time of making an investment recommendation.

Copies of the latest audited accounts are available upon request from the registered office.
® / ™ Trademark(s) of Royal Bank of Canada. Used under licence.


Are you on track for a secure financial future?

request-a-callback-cta

Start talking to us today about your future financial plan and we can help you make sure it is a resilient one.

Book free consultation

More on this topic

Related articles

How to avoid an inheritance tax shock

Wealth planning 3 min read
How to avoid an inheritance tax shock

Inheritance tax is changing: Are you ready?

Wealth planning 9 min read
Inheritance tax is changing: Are you ready?

Financial planning tips for entrepreneurs

Wealth planning 3 min read
Financial planning tips for entrepreneurs