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Emergency Fund Calculator: How Much Should You Save?

Free UK emergency fund calculator: work out how many months of essential outgoings to hold, the pound target for your circumstances, and how long it takes to get there at your monthly saving rate.

By the Abel team · Updated 2026

An emergency fund is not a round number, it is a number of months: enough of your essential outgoings set aside that a broken boiler or a gap between jobs does not go on a credit card. The usual guidance is three to six months, but a self-employed income or a household leaning on one salary needs more. Tell the calculator what you actually spend and how steady your income is, and it works out your target in pounds, and how long it takes to reach it.

Size your emergency fund

£
Rent or mortgage, bills, food, transport and minimum debt payments. Leave out the nice-to-haves.
The less predictable your income, the bigger the buffer you want.
£
What you could reach in a day or two without penalty.
£
Add this and we work out how long the fund takes to build.

Guidance only. Three to six months of essentials is the common rule of thumb for a steady income; a variable income or a sole earner usually wants more. Keep an emergency fund in easy-access savings, not investments, so it is there the day you need it. This is not financial advice.

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