Emergency Fund Calculator

Unexpected expenses can happen to anyone. Your car might need an expensive repair, your boiler could break down, or you could suddenly find yourself without an income.

Having an emergency fund gives you a financial safety net when things don't go according to plan.

Use our free Emergency Fund Calculator to work out how much you could aim to keep in savings. Simply enter your monthly expenses, current savings and how much you can afford to save each month.

The calculator will show you your recommended emergency fund, how much you still need to save and approximately how long it could take to reach your target.

How much should I have in my emergency fund?

There isn't one amount that works for everyone.

A common starting point is to have enough money set aside to cover three to six months of essential living expenses.

For example, if your essential monthly expenses are £2,000:

• 3 months would be £6,000
• 6 months would be £12,000
• 9 months would be £18,000
• 12 months would be £24,000

Someone with a stable job and relatively low expenses might feel comfortable with three months of expenses. If your income is less predictable, you have dependants or it would take a long time to find another job, you may prefer a larger emergency fund.

The important thing is to choose a target that makes sense for your own circumstances.

What should I include in my emergency fund calculation?

Your emergency fund is there to cover the things you need, rather than everything you normally spend money on.

Essential expenses could include:

• Rent or mortgage payments
• Council tax
• Gas and electricity
• Water bills
• Food and household essentials
• Insurance
• Essential travel or commuting costs
• Car payments
• Minimum debt repayments
• Essential phone and internet costs
• Childcare
• Other regular bills you couldn't easily stop paying

You don't necessarily need to include things such as holidays, restaurant meals, entertainment or other optional spending.

The idea is to work out the minimum amount you'd need to keep your household running if something unexpected happened.

Should I save three or six months of expenses?

For many people, three months is a useful starting point, while six months can provide a larger safety net.

Think about how secure your income is and how quickly you could replace it.

You might want to aim towards the higher end if:

• You are self-employed
• Your income changes from month to month
• You work in an industry where finding another job could take time
• You have children or other dependants
• You are the main income provider in your household
• You have high essential monthly expenses
• You have relatively little other financial support

On the other hand, if you have a very stable income, low fixed expenses and other financial resources available, you may decide that a smaller emergency fund is appropriate.

There is no magic number. The best emergency fund is one that gives you enough protection without unnecessarily keeping large amounts of money in cash.

How long will it take to build my emergency fund?

That depends on how much you already have saved and how much you can put aside each month.

For example, imagine your target emergency fund is £12,000 and you've already saved £4,000.

You would have £8,000 left to save.

If you can put £400 into your emergency fund every month:

£8,000 ÷ £400 = 20 months

So it would take approximately 20 months to reach your target, assuming you don't withdraw any money along the way.

Our calculator works this out for you automatically.

Don't worry if the result seems like a long time. Building an emergency fund is about creating financial security gradually. Even small, regular contributions can add up.

Where should I keep my emergency fund?

An emergency fund should generally be somewhere that is safe and easy to access.

A savings account can be suitable because you can access the money when you need it while potentially earning interest on your balance.

You may want to look at options such as:

• Easy-access savings accounts
• Cash ISAs
• Other suitable savings accounts

The most important consideration is that you can get to the money when you genuinely need it.

An emergency fund isn't normally intended to be invested in assets that could fall significantly in value just when you need to make a withdrawal.

Should I pay off debt or build an emergency fund first?

This depends on your circumstances.

If you have expensive debt, such as high-interest credit card debt, paying it down can sometimes save you more money than keeping a large amount of cash in savings.

However, having some emergency savings can still be valuable.

Without any cash buffer, an unexpected £500 expense could force you to borrow more money and potentially make your debt situation worse.

One approach is to build a small emergency buffer first, then focus on expensive debt before increasing your emergency fund towards your longer-term target.

The right balance depends on your interest rates, income, expenses and overall financial situation.

What if I can't afford to save much each month?

That's completely fine.

You don't need to build your emergency fund overnight.

Start with an amount that fits comfortably within your budget. It could be £25, £50, £100 or whatever you can realistically afford.

The important thing is consistency.

For example:

• £50 a month = £600 a year
• £100 a month = £1,200 a year
• £200 a month = £2,400 a year
• £300 a month = £3,600 a year

You can always increase your contribution later if your income rises or your expenses fall.

Setting up an automatic transfer shortly after payday can make saving easier because the money is moved before you have a chance to spend it.

Should my emergency fund include my investments?

Your emergency fund and your investments have different jobs.

An emergency fund is designed to provide accessible cash when you need it. Investments are generally intended for longer-term goals and can rise and fall in value.

For that reason, you shouldn't necessarily rely on investments to cover an unexpected expense.

Having a separate cash reserve means you may be less likely to sell investments at an inconvenient time simply because your car broke down or you suddenly lost your income.

What happens if I need to use my emergency fund?

That's exactly what it's there for.

Using your emergency fund doesn't mean you've failed at saving. It means your safety net has done its job.

If you need to spend some of it, you can simply start rebuilding the balance afterwards.

For example, if you had £10,000 saved and needed £2,000 to replace a broken boiler, you would still have £8,000 available. Once the immediate problem is dealt with, you can return to your normal savings routine and work towards rebuilding the fund.

Emergency fund vs savings

It's useful to think of your savings as different pots for different purposes.

Your emergency fund is for unexpected situations.

Your holiday savings might be for your next trip.

Your house deposit could be a longer-term goal.

Your investments and pension are generally designed for longer-term wealth building.

Keeping these goals separate can make it easier to understand what money is actually available to spend.

How much emergency savings do I need?

The answer depends on your personal circumstances.

As a simple guide, you could consider:

3 months: A basic financial safety net.

6 months: A more substantial buffer that may suit many households.

9 months: Useful if your income is less predictable or replacing it could take longer.

12 months: A large safety net that may be appropriate for some people with particularly uncertain circumstances.

You don't have to choose your final target immediately. You could start by aiming for your first £1,000, then build towards three months of essential expenses and increase the target over time.

Emergency Fund Calculator FAQs

What is an emergency fund?

An emergency fund is money you've set aside specifically to cover unexpected expenses or a loss of income. It can help prevent an unexpected event from forcing you to rely on credit cards, loans or other borrowing.

Is three months enough for an emergency fund?

Three months can provide a useful starting point, but it isn't necessarily enough for everyone. Your ideal target depends on your income, expenses, job security and family circumstances.

Is six months of savings enough?

For many people, six months of essential expenses provides a substantial financial buffer. However, some people may prefer a smaller or larger amount depending on their circumstances.

Where should I keep my emergency fund?

Many people choose an easy-access savings account so their money remains relatively safe while still being available when needed. Compare savings rates and account conditions to find an option that suits you.

Should I keep my emergency fund in cash?

Your emergency fund is primarily there for security and accessibility. Keeping at least the money you may need in the short term somewhere readily accessible can reduce the risk of having to sell investments when markets are down.

How much should I save each month?

There is no universal amount. Start with whatever you can comfortably afford without putting your normal household finances under pressure. Even a small amount saved regularly can build into a useful financial buffer.

What is the difference between an emergency fund and an investment?

An emergency fund is designed for short-term financial security and unexpected expenses. Investments are generally intended for longer-term growth and can lose value, so they aren't normally a direct substitute for an emergency cash reserve.

Start building your emergency fund today

You don't need to have everything figured out before you start.

Work out your essential monthly expenses, decide how many months you'd like to cover and see how much you already have saved.

Then choose a monthly savings amount that feels realistic.

Even if your first target seems a long way away, every contribution moves you closer to having a financial cushion when you need it most.

Use the Emergency Fund Calculator above to work out your target and create a savings plan that works for you.

The figures provided by this calculator are estimates for general information and educational purposes. Your ideal emergency fund will depend on your individual circumstances and financial needs.