This is an explainer, not financial advice.

A striking share of young adults are building their retirement plans around a blunt assumption: the state pension may not be there for them — or not in a form worth counting on, the BBC reports. It sounds fatalistic. It's also a rational response to real math.

Why the doubt is grounded

The pressure on public pensions is demographic. People are living longer and having fewer children, so the ratio of workers to retirees keeps shrinking — and state pensions are largely "pay-as-you-go," funded by today's workers to pay today's retirees. As that dependency ratio worsens, governments have one main lever: make people work longer. In the UK, the state pension age is already set to rise to 67 by 2028 and 68 in the 2030s, with official bodies warning it may need to climb further toward 70+ over the coming decades to keep the system affordable.

There's a cost pressure too. The UK's "triple lock" — which raises the state pension each year by the highest of inflation, wage growth or 2.5% — is popular but expensive, adding billions a year to the bill and, the Institute for Fiscal Studies notes, making the long-run cost hard to sustain. Young people reading those headlines draw the obvious conclusion: less generous, later.

It's not just Britain

This is a global story. In the United States, the trustees of Social Security project the program's main trust fund will be depleted in the early-to-mid 2030s — after which incoming taxes would cover only about 80% of scheduled benefits unless Congress acts. Across the rich world, the OECD warns that ageing will keep straining pension systems for decades, with far more over-65s per worker by 2050 than today. The common thread: the risk of funding retirement is quietly shifting from the state and employers onto individuals — a move toward what you might call DIY retirement.

What young savers are doing

The response is to start early and self-fund. In the UK, auto-enrolment helps: most employees are automatically signed up to a workplace pension, with the employer contributing on top of the worker's own payments (a combined minimum of 8% of qualifying pay), and the government is weighing widening it to younger workers. Beyond that, young savers lean on private pensions and tax-advantaged accounts.

The powerful ally here is compounding — earning returns on your past returns, so money invested in your 20s has decades to grow. Start early and even modest contributions can snowball; start late and you must save far more to catch up. (That's the mechanism, not a recommendation — Boursel gives no investment advice, and how much anyone should save depends on their circumstances.)

The nuance that matters

It would be wrong to say the state pension is vanishing. The more accurate picture: it is likely to endure, but arrive later and cover less of what people need — a foundation, not a full income. That's a meaningful change from the deal earlier generations expected, and it explains why so many young people are planning around it rather than on it.

Why it matters

For young households, it reframes retirement as something you build yourself, earlier than your parents did — reinforcing the affordability and wealth-building anxieties Boursel has tracked among Gen Z. For economies, a shift to individual saving affects everything from consumer spending to how much risk ordinary people carry into old age. And for policymakers, the challenge is stark: keep public pensions credible and affordable as societies age, or watch trust in them erode further. Boursel takes no side on pension policy; the takeaway is that "when can I retire, and on what?" is becoming a question each person increasingly has to answer for themselves — and today's young workers already know it.