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How to build an emergency fund when money is tight

Three months of costs is the destination. Starting there is why most people never start at all. Here is the version that works on a tight budget.

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The short answer

Set the first target at £500 rather than three months of costs, because a reachable number gets reached. Find the money from one cancelled subscription or one switched bill, then move exactly that amount by standing order on payday into an easy access account at a different bank.

£500The first target
£50A month reaches it in ten months
3 monthsOf core costs, employed
£120,000FSCS protection per person, per bank
What is on this page
  1. Pick a target you will actually reach
  2. Where the money comes from
  3. Keeping it there
  4. When you get there

Pick a target you will actually reach

Three months of costs is the right destination and the wrong starting point. For most households it is a number so large it produces nothing but guilt.

Start at £500. It covers most single unexpected bills, and it is close enough to feel possible.

Monthly amount Time to £500 Time to £3,000
£25 20 months 10 years
£50 10 months 5 years
£100 5 months 2 years 6 months
£200 3 months 1 year 3 months

Before any interest. The point is the shape, not the precision.

Where the money comes from

  • One subscription you have not used in three months
  • Switching energy or insurance rather than auto-renewing
  • A water meter, if you use less than the rateable value assumes
  • Checking benefit entitlement, because a large amount goes unclaimed each year
  • The marriage allowance, if one of you earns under the personal allowance
  • Anything with an annual price rise you have never questioned

The rule that makes this work: whatever you save, move exactly that amount by standing order the same week. Otherwise it disappears into the current account.

Keeping it there

Separate bank, not just a separate potIf it shows in the app you check daily, it is spending money with a label on it.
No card attachedA transfer that takes a day is enough friction to stop most impulse raids.
Name the accountCalling it Boiler and Car works better than calling it Savings.
Replace what you useUsing it is not failure. Not refilling it is. Restart the standing order the next payday.

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When you get there

At £500, keep going but change the target. Work out your core monthly costs and multiply by three.

Once that is in place, the next pound is usually better used elsewhere. Clearing expensive debt, taking an employer pension match, or covering the household properly with income protection.

Where you stand

Start here if
  • You have no savings at all
  • An unexpected bill would go on a credit card
  • You have cleared debt before and it came back
  • Your hours or income are not guaranteed
Deal with something else first if
  • You are behind on rent, council tax or energy
  • You are paying over 30% interest on anything
  • You are missing an employer pension match
  • A creditor has mentioned court action

Check broadband before you make an offer

Broadband speeds can vary street by street, so check the exact address before you commit. Ofcom's free checker shows which broadband speeds and mobile coverage are available at any UK property.

Want all your bills in one?

We can introduce you to a specialist who can combine your mobile, broadband and utilities into one bill. There's no fee for the introduction.

We don't provide these services ourselves. Switching household bills is not a regulated financial service, so FCA protections and the Financial Ombudsman do not apply. We'll only pass your details to the specialist if you ask us to. See our privacy notice.

Questions people actually ask

How do I build an emergency fund with no spare money?
Start at £25 a month and find it from one cancelled subscription or one switched bill. The amount matters less than starting, because the standing order builds the habit.
How long should it take to save three months of costs?
For many households this takes years, so start with the £500 target. Reaching £500 in the first year is the milestone that matters, because it stops the credit card cycle.
Should I stop pension contributions to build savings?
Not if your employer matches them. Losing a match to build savings costs you more than it gains. Reduce discretionary spending first.
Where should the money go?
An easy access savings account with a different bank from your current account. Not investments, not a fixed term you cannot break.
Is it worth saving while I have debt?
Build a small buffer first even with debt, then prioritise the most expensive debts. Without a buffer the next emergency rebuilds the debt you cleared.
How do I check broadband speed at a property?
Use Ofcom's free broadband and mobile checker at checker.ofcom.org.uk. Enter the property's postcode and choose the address to see which broadband speeds and mobile coverage are available before you make an offer.

Where to go next

Emergency savings explainedHow much and where.Budgeting and debtThe four numbers to start with.Cutting household billsWhere to find the money.Income protectionFor what savings cannot cover.Irregular incomeA different approach.Cash ISAsTax-free savings accounts.
Where these figures come from

Figures checked on 1 September 2026 and correct for the 2026/27 tax year. Rates change, so check the source before you act on a number.

Written by Ben Tomlin. We do not give regulated debt advice and we are not paid to refer you anywhere for it. The charities named on this page are free.

Last reviewed September 2026.

Savings buy you weeks. What buys you a year?

If a long illness would break the household budget, that is something we advise on and arrange directly.

Start a conversation

Prefer WhatsApp? Message us there. We are open Monday to Saturday, 9am to 8pm.

We advise on and arrange life cover, critical illness cover and income protection ourselves. There is no fee to you for our advice. If you take out a policy, the insurer may pay us a commission.

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