How to build wealth in the UK

Most writing about building wealth is really writing about products. Which platform, which fund, which account. That is the least important part, and it is the part with the most money behind it being written about.

What actually decides how much someone has at fifty is duller: how much of what they earn they keep, how early they started keeping it, and whether they did things in a sensible order. The order is the part people get wrong, and it is free to fix.

Start by knowing the number

You cannot manage a figure you have never worked out. Most people have a rough sense of their salary and almost none of their net worth, which is odd, because the second one is the actual score.

Net worth is everything you own less everything you owe. For British households it is usually dominated by two things that never appear in a current account: the equity in a house, and a pension. The Office for National Statistics finds that property and private pensions together make up about three quarters of household wealth in Great Britain. If you have been judging your progress by your savings balance, you have been reading a small corner of the page.

Work it out once, properly, then once a year after that. Our net worth calculator is built for British money specifically — it asks about pensions and ISAs separately, treats a final salary scheme differently from a pot, and keeps your student loan out of the total.

The order

There is broad agreement on the sequence, and very little on the products. Here is the sequence.

1. A month of spending, in cash, that you do not touch

Not an investment. A shock absorber. The point of the first thousand pounds is not that it earns anything; it is that a broken boiler stops being a credit card balance that then costs you 20-something per cent for the next two years.

2. Expensive debt, hardest first

Anything above roughly 8 to 10 per cent a year. Credit cards, overdrafts, car finance, buy-now-pay-later that has slid into interest. Clearing a card charging 24 per cent is a guaranteed 24 per cent return, tax free, with no risk. Nothing you can buy will reliably beat that.

Two debts sit outside this rule. A mortgage at a normal rate is usually not worth rushing. And a student loan is not really a debt at all — see below.

3. The employer pension match, in full

If your employer will pay in 5 per cent when you pay in 5 per cent, and you are paying in 3, you are declining part of your salary. It is the only step in this list with an immediate, certain, 100 per cent return, and it is the one most commonly skipped by people who are otherwise careful with money.

Check what your scheme actually matches. It is often more than the auto-enrolment minimum, and almost nobody is told.

4. Three to six months of costs

Now build the cash properly. Three months if you are salaried with stable work and no dependants, closer to six — or more — if you are self-employed, on commission, or the only earner. This money's job is to let you say no to a bad decision. It is not supposed to grow.

5. Fill the tax-sheltered space

This is where the allowances matter. In the 2026 to 2027 tax year you can put £20,000 into ISAs, and up to £60,000 into pensions with tax relief, tapering down for high earners.

The rough rule: a pension wins where the tax relief is highest and you will not need the money until at least your late fifties. An ISA wins where you might need the money sooner. A higher-rate taxpayer getting 40 per cent relief on the way in is being handed a great deal more than a basic-rate taxpayer getting 20. Most people should be using both, in different proportions at different stages of life.

6. Everything else

Property beyond your own home, a general investment account, a business. These can all work. None of them should come before the free money in step 3.

The student loan is not a debt

It is collected through payroll, only on income above a threshold, and it is written off after a fixed period whether or not anything remains. For the 2026 to 2027 tax year the thresholds are £26,900 on Plan 1, £29,385 on Plan 2, £33,795 on Plan 4, £25,000 on Plan 5, each taking 9 per cent of income above the line, and £21,000 on a Postgraduate Loan at 6 per cent.

Earn below the threshold and you repay nothing, and the balance still goes at the end. That is not how a debt behaves. It is how a tax behaves.

The practical consequence is that overpaying it is often a poor use of money that could be clearing a credit card or catching an employer match — and that counting it in your net worth makes you look poorer than you are. Plan 5, with its forty-year term, is the one where most graduates will never clear the balance at all.

There are exceptions. High earners who will clear the loan comfortably within the term are paying real interest on real money, and for them the sums are different.

What actually moves the number

Three things, in this order of effect.

Time. Money compounds, and the early years do the heavy lifting even though they feel like the pointless ones. Someone paying in £200 a month from 25 will usually finish ahead of someone paying in £400 from 40, having paid in less.

Rate of saving. How much of your income you keep is almost entirely within your control, which cannot be said of returns. Going from saving 5 per cent of your income to 15 per cent changes more than any fund choice will.

Cost and tax. A percentage point of annual charges, compounded over thirty years, takes a quarter of the final pot. Tax relief and ISA shelter work the same arithmetic in your favour. This is why the allowances in step 5 matter more than the fund inside them.

Notice what is not on the list: picking the right investment. It matters, but it matters far less than the industry that sells it needs you to believe.

The awkward truth about targets

Round numbers are motivating and slightly dishonest. £100,000 in twenty years is not £100,000 — at 3 per cent inflation it buys roughly what £55,000 buys today.

This is not an argument against targets. It is an argument for setting them in today's money and checking both figures, which is why our time to £100,000 calculator shows the cash number and the real number side by side. The second one is smaller. It is also the one worth planning around.

Where to start, today

Work out your net worth. Find out what your employer actually matches, and match it. Then set one standing order on payday, to an account you have to think about to reach.

That is most of it. The rest is time.