By The Income Tracker · Updated 8 September 2026 · 5 min read
The short answer
The common guideline is 20% of take-home pay, from the 50/30/20 rule. The more useful answer is an order: first £1,000 in instant-access savings, then three to six months of essential outgoings as an emergency fund, then the percentage. Around three in ten UK adults have under £1,000 saved, so the first milestone is a real one.
The guideline and where it comes from
The 50/30/20 rule, popularised by Elizabeth Warren and Amelia Warren Tyagi in All Your Worth (2005), puts 50% of take-home pay on needs, 30% on wants and 20% on savings and debt repayment. Twenty percent is a good long-run target. It is also more than many people can manage this month, which is where the order below comes in.
Save in this order
A £1,000 starter fund in an instant-access account. Enough to absorb a boiler part or a car repair without a credit card. The FCA's 2024 Financial Lives survey found 10% of UK adults had no cash savings and another 21% had under £1,000, so getting here already puts you ahead of a large share of the country.
Clear expensive debt. Anything on a credit card or overdraft at 20% or more costs far more than savings earn; the snowball versus avalanche calculator shows the order.
An emergency fund of three to six months of essential outgoings. MoneyHelper's rule of thumb. Essential means rent, bills, food and transport, not your full spending.
Then the percentage. Push towards 20% of take-home pay, split between long-term savings, a pension top-up if you have one, and specific goals.
Work out your own number
Import last month's bank CSV into The Income Tracker and read two figures: your surplus (income minus spending) and your essential outgoings (Housing, Bills, Groceries, Transport, Health). The surplus is what you can save now. The essentials, multiplied by three to six, is your emergency fund target. The emergency fund calculator turns those into a monthly amount and a date.
A note on where to keep it
Emergency money belongs in an instant-access account, not investments. The Personal Savings Allowance lets basic-rate taxpayers earn £1,000 of interest a year tax-free (£500 for higher-rate), and a cash ISA shelters interest beyond that. The overall ISA allowance is £20,000 for 2026/27; from April 2027 the cash portion for under-65s is due to be capped at £12,000 within that total.
The Income TrackerTrack it free. No account, no bank login.
The common guideline is 20% of take-home pay. If that is out of reach, start with whatever your surplus allows and build a £1,000 starter fund first.
How big should an emergency fund be in the UK?
MoneyHelper suggests three to six months of essential outgoings in an instant-access account. Essential means rent, bills, food and transport.
Should I save or pay off debt first?
Build a small starter fund, then clear expensive debt, then build the full emergency fund. Interest on cards and overdrafts is usually far higher than savings rates.
How do I know what I can afford to save?
Import your bank CSV into The Income Tracker and read the surplus. That figure, month after month, is your real saving capacity.
Sources and checking
Facts on this page were last checked on 2026-09-08 against: