Spain registers one of the lowest fertility rates in the European Union. The latest definitive data from the National Institute of Statistics (INE) records an average of 1.10 children per woman, almost half of the reference value that Eurostat identifies as necessary in developed countries for a population to remain stable in the absence of migrations: 2.1 children per woman.
There is no fixed number of babies that must be born each year. This calculation depends on how many women are of childbearing age and the age structure of the population.
In 2024 318,005 children were born in Spain, 25.6% less than a decade earlier, when 427,595 births were recorded. The average number of children per woman fell to 1.10, down from 1.32 in 2014. Only Malta reported a lower fertility rate in 2024 within the EU, with 1.01. The European average was 1.34.
The provisional advance for 2025 slightly breaks that trajectory: the INE estimates 321,164 births, 1% more than the previous year. These are still provisional figures pending confirmation when the definitive data is published.
To what extent would that figure need to increase?
A simple proportional equivalence between the approximately 321,000 births in 2025 and a fertility rate of 1.10 children per woman would raise the aforementioned rate of 2.1 per woman to 610,000 annual births. That is, an additional 290,000 births would be needed.
However, the approximation is simply indicative. It is not an estimate from the INE or Eurostat. But it does allow us to verify that Spain needs to significantly raise its fertility to approach 2.1 children per woman to ensure replacement solely through births.
And the INE does not foresee it
The latest projections from the National Institute of Statistics, published in June 2026, outline a scenario quite far from that threshold.
The INE contemplates a slight recovery of births from 2026 to 2042. Between 2026 and 2040, around 5.3 million children would be born, but that amount would still be 6.2% lower than that recorded during the previous 15 years.
The central hypothesis also does not foresee a significant jump in fertility. The average number of children per woman would rise from 1.10 in 2024 to 1.16 in 2040. That is, even after that recovery, Spain would still be far from the replacement level.
The result is that births would remain below deaths throughout the projection horizon. The vegetative balance —the difference between births and deaths— would continue to be negative.
Do Spaniards not want to have children?
Low fertility does not necessarily mean that Spaniards do not want to have children.
The latest specific Fertility Survey conducted by the INE, corresponding to 2018, detected a gap between the desired number of children and the number actually had. Among women who had fewer children than they wanted, especially work-related reasons, difficulties in reconciling, and economic reasons gained weight from the age of 35.
The survey is eight years old and, therefore, cannot be a faithful reflection of today. However, it is the latest specific statistical operation by the INE to identify what factors condition fertility and shows a reality existing in Spanish society.
The OECD reaches similar conclusions in its international analyses. Its studies find a negative relationship between fertility and factors such as unemployment and high housing costs.
In contrast, the possibility of reconciling work and family, early childhood education, and parental leave appear positively associated with birth rates. The organization itself warns that no isolated policy constitutes an automatic solution.
In its specific report on Spain, the OECD already pointed out that many young people delayed the arrival of the first child due to difficulties in finding stable employment, accessing housing, facing economic costs, and achieving a satisfactory balance between work and family.
Housing: emancipation, then family
It appears as one of the main obstacles even before considering having children. Spain is one of the EU countries with the latest emancipation.
Spanish young people left their parents' home in 2024 at an average age of 30 years, compared to the 26.2 years average in the European Union.
The average price of free housing in Spain rose from €1,463/m² in 2014, the minimum of the recent series, to €2,230/m² in 2025. This is an increase of 52.4% in eleven years, according to data from the Ministry of Housing and Urban Agenda.
In rental, the annual rates published by the INE imply a cumulative increase of approximately 24% in rental prices between 2015 and 2024. The situation is especially serious for those who are entering the market now. While the rents of existing contracts increased by 2.8%, those of new contracts rose by 8.8% in just one year
Reconciliation: from 16 to 19 weeks per parent
Another of the recent changes has occurred in the permits to care for children. Since the reform approved in July 2025, each parent has 19 weeks of leave for birth and care, compared to the previous 16. In single-parent families, the period rises to 32 weeks.
Of the 19 weeks, six must be taken immediately after birth; another eleven can be distributed during the first year of life and two additional weeks can be used until the child turns eight years old.
Reconciliation does not end, however, with the initial leave. The OECD points out that systems with greater continuity between paid leave, affordable early childhood education, and reconciliation measures better reduce the cost of balancing employment with parenting. And even so, it warns, family policies alone do not guarantee a return to rates close to 2.1.
Support for families
Spain also has economic instruments linked to parenting, although the system combines conditional aids, deductions, and specific benefits instead of a universal state benefit per child.
One of the main mechanisms is the Child Support Complement (CAPI), linked to the Minimum Vital Income system but with broader income limits. Currently, it establishes 115 euros per month for each child under three years old, 80.50 euros between three and six, and 57.50 euros between six and eighteen years old. In April, 586,118 households were receiving it.
There is also a benefit of 1,000 euros for birth or adoption for certain households, including large families, single-parent families, and parents with disabilities, subject to the requirements established by Social Security.
The Family Bill, currently being processed in Congress, includes a range of aids but is far from being approved.
Youth employment
The labor situation closes the circle. The formation of a family usually comes after entering the labor market, professional stabilization, and emancipation.
Spain has made an important leap in the stabilization of employment, by reducing its temporary employment rate by more than ten points following the last labor reform: it went from 25.6% in 2021 to 15.1% recorded in the second quarter of 2026.
The transformation is especially noticeable in the composition of salaried employment. In the last twelve months up to June 2026, the number of permanent employees increased by 571,900, while temporary workers grew by 34,900: practically all the net growth of salaried employment during that period corresponded to permanent workers.
Contractual precariousness has been greatly reduced, but it does not allow us to conclude on its own that economic insecurity among young people has disappeared. Temporality is just one dimension of labor stability, which involves other factors such as salary, distribution of working hours, or access to employment itself.
Positive balance of 3.4 million in ten years
There is a second variable that completely changes the reading of the generational shift: immigration.
Spain does not necessarily need to achieve a fertility rate of 2.1 to maintain or increase its population if the arrival of people from abroad compensates for the birth deficit. And that is precisely what has happened for much of the last decade.
Between 2015 and 2024, Spain accumulated a positive external migration balance of approximately 3.44 million people, summing the annual data published by the INE. The period began practically in equilibrium, with a balance of -1,761 people in 2015, and ended with 626,268 net entries in 2024.
The evolution has not been linear. The balance was 87,422 people in 2016, 163,272 in 2017, 334,158 in 2018, and 454,232 in 2019. It then decreased during the pandemic to 219,357 in 2020 and 191,094 in 2021. Subsequently, it reached 727,005 people in 2022, the maximum of the decade, and remained at high levels: 642,296 in 2023 and 626,268 in 2024.
The figure for 2024 is the third largest external migration balance in the last ten years. That year, 1,288,562 people arrived from abroad and 662,294 left the country.
Immigration is also having a direct effect on birth rates. In 2024, 33.3% of births corresponded to mothers born outside of Spain. If nationality is used instead of the country of birth, 25.6% of babies had a mother of foreign nationality.
Six million more by 2040
The demographic projections of the INE grant immigration an even greater role during the coming decades. The central scenario starts from the fact that the migratory balance of 2026 will be similar to that observed in 2024 and will slightly decrease afterwards, although it will remain positive throughout the entire analyzed period.
The accumulated result would be considerable: 2.7 million additional inhabitants due to migrations during the first five years of the projection and 6.3 million by 2040. If the horizon is extended to 2075, the accumulated net migratory balance would reach 15.5 million people.
This helps to understand an apparent contradiction. Spain can gain population while recording more deaths than births. The INE projects that the resident population will increase from about 49 million inhabitants in 2025 to approximately 53.7 million in 2040, driven mainly by migratory movements.
The projections are not closed predictions. The INE defines them as simulations built from hypotheses about fertility, mortality, and migrations. Their usefulness lies in showing what would happen if those trends evolved according to the proposed scenario.
Generational replacement is not maintaining the population
Generational replacement and maintaining the total number of inhabitants are not exactly the same. A fertility rate of approximately 2.1 would allow one generation to replace the previous one without resorting to migrations. But a society with a lower fertility rate can maintain and even increase its population through immigration.
Spain currently represents that second scenario: few births, more deaths than births, and at the same time, population growth thanks to the positive migratory balance.
The OECD precisely suggests that countries with persistently low fertility must work in two directions. One is to facilitate that those who want to have children can do so through affordable housing, job stability, work-life balance, early childhood education, and economic support. The other consists of adapting to a low-fertility society by also resorting to immigration, greater labor participation, and productivity improvements.