Birth rates are falling because our economy is built to chase GDP growth, and that goal works against the family - becuase a family is an investment in a future and isn’t counted.
A population needs about 2.1 children per woman to replace itself. Most rich countries now sit well below that: roughly 1.5 across the EU, about 1.6 in the US, and around 0.7 in South Korea, the lowest in the world.
The usual explanations keep piling up: housing costs, student debt, career pressure, dating apps, changing values. Governments respond with a patchwork of fixes, from baby bonuses to longer parental leave.
Each of these explanations is real, but each is treated as a separate problem. They are not separate.
They are symptoms of one design choice: making GDP growth the master goal that everything else serves. To see why, start with what GDP actually rewards.
The growth engine
GDP measures the market value of goods and services bought and sold. It does not measure whether those purchases make life better, or whether a society’s most valuable work is being done at all. A system scored this way rewards three things that work against families.
It rewards rising prices. Growth-focused policy treats mild inflation as healthy, because it encourages people to spend now rather than save. After 2008, near-zero interest rates and quantitative easing were used to revive growth, and they also pushed up the prices of homes and shares. Rising asset prices are read as a sign of a strong economy; falling ones are treated as a crisis to prevent.
It rewards turning unpaid work into paid work. A parent caring for their own child adds nothing to GDP. Pay a nursery to do the same job and GDP rises. Economists have an old joke about this: if a man marries his housekeeper, GDP falls, because her work is now unpaid.
It rewards splitting households. Two people living apart need two rents, two fridges, two broadband contracts and often two cars. A couple sharing one home buys half of most of these. Every split household is a small win for measured output.
None of this needs a conspiracy. It is simply what the scoreboard rewards, and governments, businesses and markets all play to the scoreboard. A minister who presides over rising house prices and booming spending gets credit; cheaper homes and more parents at home would show up as weaker growth.
A world where prices fall, and people save money and don’t spend it, thats bad for GDP growth and the economy looks worse, in the short term.
Pricing out the family
Housing shows the incentive most clearly. Rising home values make owners feel wealthier, so they spend more. They also feed mortgage lending, bank profits, construction and property taxes. So governments tend to boost demand rather than let prices fall.
Rising house prices are good for the economy but obviously not for new families who can’t afford to buy them and have to live in smaller houses.
England’s Help to Buy scheme, which ran from 2013 to 2023, is a good example. It lent buyers part of the price of a new-build home. Critics argued that much of the help was absorbed into higher prices, benefiting developers more than young families.
The results show up in the numbers. In England, a typical home cost under four years of full-time earnings in the late 1990s; in recent years it has been around eight. Canada, Australia and much of the US have seen similar shifts.
A family needs space, and space is exactly what has become most expensive. A young couple can often afford a one-bedroom flat, but not the extra bedrooms a family needs. So they wait, and the average age of mothers at first birth has passed 30 in much of Europe.
Housing is only the start. Full-time childcare in the UK can cost as much as a second rent, and in many US states it costs more than a year of public university tuition. Add rising costs for food, energy, transport and education, and a child starts to look like a luxury good.
People respond to prices. When something becomes harder to afford, they have less of it, or delay it until it is too late. Surveys in many countries find people want more children than they actually have, with cost among the most common reasons for the gap.
Reshaping the culture
The incentive does not stop at prices; it shapes how we live. Each of the cultural shifts usually blamed for low birth rates has an economic logic behind it.
Dual incomes. When banks lend against two salaries, house prices rise to match two salaries. A family that wants to live on one income must then outbid two-income households, and usually cannot. Elizabeth Warren and Amelia Warren Tyagi called this the two-income trap: the second wage was meant to give families more, but much of it was absorbed into housing costs. What began as a choice became a requirement.
Career as identity. A growth economy needs workers who give their best years to paid work. Status and respect increasingly come from career, while raising children earns little public recognition. The late 20s and early 30s, when having children is biologically easiest, are the same years careers demand the most.
Feminism. The women’s movement won real gains: the freedom to study, work and choose. But those gains arrived inside an economy that counts paid work and ignores care. Governments and consultancies now routinely pitch women’s employment as a growth strategy worth trillions in added GDP. By the same arithmetic, motherhood shows up as lost output, so the choice to have children was not removed, but it was made to look like the costly option.
Dating. Dating apps make money from engagement, not from users who settle down and delete the app. Their design presents an endless supply of options and rewards continued searching. Finding a partner gets framed as a consumer choice to be optimised.
So does spending on yourself. Its funny to see childcare closing and plastic surgery and high end fashion shops opening in their place, but it’s what the economy incentivises.
Divorce. When one household splits into two, spending on housing, furniture, cars and legal fees rises, and GDP counts every transaction. Nothing on the scoreboard records the cost of a broken family - because its not even measured. Lawyers fees, counsellors and therapists are much better for the economy. Some tax and benefit systems even give couples more money if they live apart, through so-called couple penalties.
Individualisation. Underneath all of this is a broader shift. Markets sell more to individuals than to families, so advertising tells each person to invest in themselves, treat themselves and keep their options open. One-person households now make up roughly a quarter to two-fifths of all households in many rich countries.
Even social media is incentivised to do that by getting your attention to sell you ads to incentivise you to be more individualistic.
A culture that tells each person to optimise their own life and put themselves first will struggle to ask anyone for the long, shared commitment that raising children demands. Children require sacrifices of time, money, freedom and career. The reward cannot be bought, measured or easily explained in the language of the market.
Fixing the master incentive
If the cause is the incentive, the fix is to change the incentive. Baby bonuses and tax credits that leave the growth target untouched are like bailing water without fixing the leak.
Hungary shows the limits of that approach. Since 2010 it has spent heavily on family support, including loans that are partly or fully written off as more children are born. Fertility rose from about 1.2 in 2011 to nearly 1.6 a decade later, then slipped back. Money helps at the margin, but the wider system keeps pulling the other way.
A deeper fix starts with what governments measure. New Zealand took a step in this direction with its 2019 Wellbeing Budget, which set priorities beyond GDP. A family-centred scorecard could track:
household formation and the share of young adults living as couples
the cost of a family-sized home relative to income
the cost of raising a child as a share of a typical wage
time parents spend with their children
the strength of local communities and support networks
What gets measured gets managed. Policy would then favour affordable homes over rising home values, for example by building far more family housing or taxing land rather than work. It would favour wages that support a family on reasonable hours, and tax and benefit systems that stop penalising couples and treat care as real work.
Culture matters just as much. Economics sets the price of family; culture sets its meaning. Israel is a striking example: it is wealthy and expensive, yet its fertility rate is close to 3, the highest in the OECD. Even secular Israelis have more children than most Europeans, which points to a culture that treats family as central.
A society that honours commitment, parenthood and duty to the next generation gives people a reason to have children that no subsidy can buy. That means real status for parents, workplaces that make room for family life, and public stories that treat raising children as an achievement rather than a lost opportunity.
Something bigger than ourselves
The birth rate is a verdict on what a society values. For decades we have treated rising GDP as proof that life is improving, while the most basic sign of hope, the willingness to raise the next generation, has kept falling.
The irony is that the growth model is undermining itself. Fewer children mean fewer future workers supporting more retirees, strained pensions and health systems, and shrinking towns. An economy that sacrifices families for growth eventually runs out of the people that growth depends on.
Most of the things we want come indirectly - you make money not directly, but by providing a great service. You can’t make yourself happy or chase happiness but it comes from making others happy. You get friends by being a good friend.
The same with the economy, and birth rates. We chase economic growth, and our population shrinks and economy shrinks in the short term. We invest in the future and next generation and invest in it and we get a growing population and long term economic growth.
The answer is not another programme. It is a different aim: an economy and a culture built around something bigger than individual consumption and next quarter’s growth figures.