What lifestyle creep actually looks like on a £70k+ household income

Most of us assume that earning more will eventually take care of money worries on its own. It's an understandable belief, but it doesn't tend to hold up, because when income goes up, spending usually finds a way to follow it without anyone deciding that it should.

If you've had a promotion, a bonus or a return to full time work and still don't feel any further ahead, you're far from alone. This post looks at why that happens, what it really costs over time, and a straightforward way to make sure your next pay rise actually changes something.

What lifestyle creep actually is, and why earning more doesn't fix it

Lifestyle creep is what happens when spending rises in step with income, so a pay rise, a bonus or a promotion gets absorbed into a slightly better version of the life you already had, rather than into savings, investments or paying something down. The upgrade rarely feels reckless in the moment. It's a nicer car, a few more takeaways, a holiday that used to feel like a stretch and now feels like the minimum.

It's tempting to assume this stops mattering once you're earning well, but the opposite tends to be true. Almost 30% of people earning £100,000 said they didn't have enough money for essential things like bills and groceries, according to a 2024 Starling Bank survey of 2,300 UK adults (Starling Bank, 2024). A household income of £70,000 or more already sits well above the UK median, £39,039 for full-time employees in April 2025 (ONS, 2025). Earning more buys more room for lifestyle creep to operate in, not automatic protection from it.

What a pay rise actually costs you if lifestyle creep absorbs all of it

If a £4,000 pay rise disappears entirely into higher spending, the household doesn't just lose that £4,000 this year. It loses the years of growth that money could otherwise have had. Put half of it, £2,000 a year or roughly £167 a month, into a pension or a stocks and shares ISA instead, and at the long-run average real return for UK equities of 5.3%, calculated by the investment website Monevator from over 150 years of UK market data, that alone could grow to around £25,500 after 10 years and £68,000 after 20 (Monevator, 2026).

The figure assumes markets behave broadly as they have done historically, doesn't account for charges, and isn't a promise, since investments can fall as well as rise. It shows that the real cost of a pay rise disappearing isn't just what it was spent on, but what it would otherwise have had time to become.

Why this catches out women managing the household finances in particular

Lifestyle creep tends to hit hardest for the person who allocates the household's money, because a pay rise usually gets absorbed into collective spending before anyone has actually decided what's optional. If you're the one who notices the car needs replacing, books the holiday and signs off on the bigger food shop, a raise often gets spent by momentum rather than choice.

There's also a catching up instinct worth naming honestly. Many women reach a higher income later than expected, after a promotion or a return to full-time work, and the pay rise can feel like permission to finally stop counting the cost of things. That's exactly the moment lifestyle creep tends to take hold, because the spending feels earned rather than automatic, which makes it harder to question.

A simple way to stop a pay rise disappearing without you noticing

The most reliable fix is deciding what happens to a pay rise before it lands, rather than working it out once the money's already sitting in your current account. Splitting it, so roughly half becomes a fixed increase to saving, investing or a pension contribution and the rest becomes new spending money, works better than any specific rule about how much to keep.

The easiest place to make that split automatic is your pension. Many workplace schemes let you increase your own contribution by a percentage rather than a fixed cash amount, so the proportion going towards retirement rises with your pay instead of quietly falling every time you earn more. Set that up the same day your salary changes, before the extra money becomes part of your normal spending.

From Lucy, co-founder of Welleness

I can point to the exact year my own lifestyle crept. It followed a promotion I'd worked towards for a long time, and I remember feeling like I'd earned the right to stop thinking quite so hard about money. The car changed and the holidays got a bit more ambitious, and none of it felt like a decision so much as a natural next step.

It took me a while to notice my savings rate hadn't moved at all, even though my income clearly had. Nothing about that felt reckless at the time. It just felt like keeping pace with a life that had genuinely changed, and that's exactly what made it easy to miss.

What actually shifted things wasn't cutting anything back. It was deciding, the next time my pay went up, that a fixed part of it would go somewhere before I got used to having it. That one change did more than any amount of guilt about the previous few years ever could.

What you can do now

Work out what percentage of your income you're currently saving or investing, then compare it with the percentage from two pay rises ago. If income has risen and that figure hasn't, that's your answer.

The next time your salary increases, ask your payroll or pension provider whether your contribution can rise as a percentage rather than stay fixed in cash, and set the change for the same day your pay does.

Frequently asked questions

Is lifestyle creep the same as normal spending going up?
Not quite. Ordinary costs rise with inflation and family size regardless of income. Lifestyle creep specifically means discretionary spending rising to match a pay rise, so you end up no further ahead than before it arrived.

How much of a pay rise should I actually save?
There's no fixed rule, but deciding on a proportion before the money lands, half is a reasonable starting point, works better than deciding case by case once it's already in your account.

Does lifestyle creep affect my pension too?
Yes, often more than people realise. If your contribution stays a fixed cash amount while pay rises, the proportion of your income actually going towards retirement quietly falls each time you're paid more.

Here is what one Welleness member said after completing her financial health check.

"If Welleness didn't exist I'd have done absolutely nothing. I feel like this has really helped me sort some stuff out. Having this experience has definitely made me feel like I should just ask the questions, get that advice, get myself into a better position." Brona, Welleness user

If reading this has made you wonder where your own pay rises have actually gone, our free financial health check takes less than five minutes and gives you a clear picture across six areas of your financial life. No judgement, no jargon, just clarity, at insights.welleness.ai.

This post is for informational purposes only and does not constitute financial advice. For guidance specific to your situation, speak to a regulated financial adviser.