Scroll through the personal finance side of TikTok and you may encounter twentysomethings announcing that they plan to retire at 35, 40 or 45.

Some share ultra-cheap meal plans, no-spend challenges and rapidly growing investment balances. Others calculate exactly how much money they believe they need before they can leave their jobs for good.

It is part of the FIRE movement, which stands for Financial Independence, Retire Early.

The idea is not simply to become rich. FIRE followers aim to save and invest enough money to cover their living costs without depending on a full-time salary. For many, the real prize is not permanent retirement but the freedom to work fewer hours, change careers or take time off without panicking about money.

TikTok makes this look exciting, but also intimidating. Videos featuring six-figure investment pots and enormous savings rates can leave ordinary earners wondering whether FIRE is only available to people with very high salaries or help from their families.

The good news is that you do not have to retire at 40 to benefit from the movement. A more flexible version of FIRE can help almost anyone build greater financial security.

Why is FIRE suddenly all over TikTok?

The cost of living, high housing costs and worries about retirement have made younger people increasingly interested in taking control of their financial futures.

FIRE content also works particularly well on TikTok. Creators can share savings totals, monthly budgets and dramatic “days until retirement” countdowns in short, highly visual videos.

One UK creator attracting attention is Mia McGrath, who posts as @miarosemcgrath. She has shared her ambition to retire at 40, alongside videos about saving, avoiding unnecessary purchases and building investments.

McGrath has explained that her aim is to “soft retire”, giving her greater control over when and how she works rather than necessarily giving up work forever. Her story has attracted both admiration and criticism, particularly because not everybody has the same income, housing situation or ability to save.

TikTok accounts where we have seen FIRE ideas

We have seen financial independence, long-term investing and the debate around FIRE discussed on accounts including:

• @miarosemcgrath: a UK creator documenting saving, investing and her aim to retire at 40.
• @herfirst100k: Tori Dunlap’s account focuses on helping women save, invest and negotiate better pay.
• @delyannethemoneycoach: content about long-term investing and building financial freedom.
• @humphreytalks: short explanations of personal finance concepts, including investing and retirement.
• @mrsdowjones: financial content that has also challenged the extreme deprivation sometimes associated with FIRE.

Not all these creators follow a strict FIRE plan, but their content overlaps with its main themes: investing, increasing income, cutting waste and making work less financially compulsory.

How does the FIRE movement work?

Traditional FIRE followers try to create a large investment portfolio and then withdraw a small proportion of it each year.

One of the movement’s best-known calculations is the rule of 25. Estimate how much you expect to spend each year once financially independent and multiply it by 25.

This is connected to the 4% rule, under which somebody withdraws approximately 4% of their portfolio during the first year of retirement and subsequently adjusts withdrawals for inflation.

However, it is only a rough planning guide, not a promise that money will never run out. Investment performance, inflation, tax, fees and the number of years the money must last can all affect the result. Someone retiring at 40 could need their portfolio to support them for 50 years or longer.

UK followers must also consider where their money is held. Most private pensions cannot currently be accessed until 55, and the normal minimum pension age is due to rise to 57 from 6 April 2028. Someone hoping to stop working earlier may therefore need accessible savings and investments to bridge the gap.

How to make FIRE attainable on an ordinary income

A TikTok creator may be able to put half of their income into investments, but that is not realistic for many households. Rent, childcare, food and energy bills cannot simply be removed from a budget.

The answer is to build a personal version of FIRE rather than copying somebody else’s savings rate.

1. Decide what financial independence means to you

You do not have to aim for complete retirement. Your goal might be to:

• Move to a four-day working week.
• Change to a lower-paid but more enjoyable career.
• Take a three-month break between jobs.
• Pay off your mortgage earlier.
• Become self-employed.
• Build enough investment income to cover one regular bill.
• Retire five years earlier than originally planned.

A specific, meaningful target is easier to stick to than a vague instruction to save more.

2. Work out what you actually spend

Look through at least three months of bank and credit card statements. Separate essential spending from optional purchases and irregular expenses.

Annual costs such as insurance, Christmas and car repairs still count. Ignoring them will make your budget look artificially low.

Once you know what your lifestyle costs, you can calculate an initial FIRE number. Do not worry if it looks enormous. It is a direction of travel, not an invoice that must be paid immediately.

3. Create smaller FIRE milestones

Instead of focusing solely on £500,000 or £1 million, break the journey into stages:

1. Save your first £500.
2. Build one month of essential expenses.
3. Clear expensive consumer debt.
4. Save three to six months of essential outgoings.
5. Increase pension contributions if affordable.
6. Invest an affordable fixed amount regularly.
7. Build enough investments to cover one month of annual spending.
8. Reach the point where working fewer hours becomes possible.

MoneyHelper suggests holding around three to six months of essential expenses in an instant-access savings account. It also advises addressing expensive debts before putting substantial sums into saving or investing.

4. Choose a savings rate you can sustain

Trying to copy an extreme savings rate could leave you miserable or cause you to abandon the plan. Start with a percentage you can maintain, even if it is only 5%, and consider increasing it after a pay rise, cleared debt or reduced bill.

Automating the transfer shortly after payday can prevent saving from becoming an end-of-month afterthought.

The most effective rate is not necessarily the highest one. It is the rate you can continue without neglecting essential costs, relationships, health or everything that makes life enjoyable.

5. Increase income as well as cutting costs

There is a limit to how much anyone can save by giving up coffee. Increasing earnings can make a far bigger difference. Options might include:

• Asking for a pay rise.
• Applying for a better-paid position.
• Selling unused belongings.
• Freelancing with an existing skill.
• Taking occasional overtime.
• Starting a manageable side hustle.
• Renting out a room where suitable and permitted.
• Checking your eligibility for benefits and tax relief.

Be realistic about side hustles promoted online. Some require substantial time, equipment or upfront spending, and very few produce instant passive income.

6. Use UK tax shelters carefully

In the 2026/27 tax year, adults can put up to £20,000 across their ISAs, although most people will save considerably less. Returns within an ISA are generally sheltered from UK Income Tax and Capital Gains Tax.

A workplace pension can also be valuable because it may include employer contributions and tax relief. However, pension money is normally locked away until the minimum access age, so somebody planning very early retirement may need a combination of pensions and accessible savings.

A First Time Buyer ISA may help eligible savers buy a first home or save for later life. You can contribute up to £4,000 a year and receive a 25% government bonus, but restrictions and withdrawal charges mean it is important to understand the rules.

Which version of FIRE could suit you?

• Lean FIRE: living on a deliberately small budget to reach independence sooner.
• Fat FIRE: building a larger portfolio to fund a more expensive lifestyle.
• Coast FIRE: investing enough early that, based on assumptions, it may grow towards a later retirement target without substantial further contributions.
• Barista FIRE: leaving full-time employment but continuing with part-time or flexible work.
• Slow FIRE: building independence gradually while maintaining a comfortable life now.
• Soft retirement: reducing work instead of stopping completely.

For many ordinary UK households, Slow FIRE or Barista FIRE may be more attainable than trying to stop work completely in their thirties.

The TikTok FIRE traps to avoid

Social media does not always show the complete financial picture. A creator may have a high salary, live with family, receive an inheritance or earn money from the account on which they discuss early retirement. That does not invalidate their achievement, but it may make their results difficult to replicate.

Be cautious if somebody:

• Promises guaranteed investment returns.
• Pushes one particular share, cryptocurrency or trading platform.
• Creates pressure to invest immediately.
• Does not explain risks, fees or commercial relationships.
• Sells an expensive course as the only route to financial freedom.
• Suggests borrowing money to invest.
• Makes you feel ashamed for spending money on ordinary pleasures.

The Financial Conduct Authority says social media financial promotions must be fair, clear and not misleading. Check a financial firm on the FCA Register before handing over money.

Is FIRE really achievable?

Complete financial independence at a very young age will not be realistic for everybody. Income, disability, caring responsibilities, housing costs and sheer luck all affect how quickly somebody can build wealth.

But that does not make the whole movement useless.

Saving £25 or £50 a month may not allow you to retire at 40, but it can create choices you did not have before. It could help you manage an emergency, leave a damaging workplace, cut your hours or retire a little earlier.

The most useful lesson from TikTok’s FIRE movement is not that everybody should live on the cheapest possible breakfast or sacrifice their twenties for a seven-figure portfolio.

It is that financial independence can exist on a sliding scale. Every debt cleared, emergency fund built and investment made can reduce the amount of control that money worries have over your life.

TikTok may provide the spark, but your version of FIRE should be built around your income, responsibilities and the life you want to live now as well as in the future.