11/1/26

Mexico Is Ageing on an Income It Cannot Retire On, and the Budget Already Shows It

Why a fertility rate of 1.2 and a pension bill above 6% of GDP measure the same problem, and the two indicators that could prove this wrong

AsiaPresswire – Mexico’s fertility rate was 1.9 children per woman in 2019. In 2024 it was 1.2. Replacement is 2.1. In five years the country moved from a fertility profile that roughly holds a population steady to one where each generation is 43% smaller than the one before it, and it did so at a income level where the state has not finished building the systems that older people need.

That is the whole argument, and it can be falsified in two places. Either fertility recovers toward replacement, or the formal labour market expands fast enough to fund the pension promises already written. If neither happens by 2028, the arithmetic below is not a forecast, it is a schedule.

The Number That Turned

The 2025 inter-census survey, reported by INEGI and relayed through Mexican statistical coverage in 2025-26, put the population at 130.4 million with 19.2 million people aged 60 or over. That is 14.7%. The median age is 32. The ageing index, which counts people aged 60 and over per 100 children aged 0 to 14, reached 68.2, against 47.7 in 2020. Life expectancy at birth is 75.5 years.

None of those numbers is unusual for a middle-income country in isolation. What is unusual is the speed and the sequencing. A fertility rate that falls 37% in five years is not a slow demographic drift; it is a behavioural break, and it arrives before the institutions that amortise it.

Table 1: Six demography indicators, and what each one implies

Indicator Value Year What it changes
Total population 130.4 million 2025 Denominator for every per-capita claim
Population aged 60 and over 19.2 million 2025 14.7% of the total
Median age 32 years 2025 Labour supply still growing, briefly
Ageing index 68.2 per 100 children 2025 Was 47.7 in 2020
Fertility rate 1.2 children per woman 2024 Was 1.9 in 2019
Life expectancy at birth 75.5 years 2025 Duration of the payout

Read the median age and the fertility rate together and the trap appears. A median age of 32 means Mexico still has a large working-age cohort, which is why the fiscal problem does not feel urgent in 2026. A fertility rate of 1.2 means that cohort is the last large one. The two facts are consistent, and they point in opposite directions for about fifteen years.

Three Variables, Not One

Most commentary on Mexican ageing collapses into a single variable, usually the dependency ratio, and then argues about projections. The dependency ratio is a consequence. Three variables drive it, and only three matter for the next decade.

Fertility. At 1.2, Mexico is below every OECD member except Korea and Italy, and it got there faster than either. Fertility is the slowest variable to reverse and the fastest to move; it responds to housing costs, female labour participation and contraceptive access, none of which a pension reform touches.

The contributory and non-contributory split. Mexico runs two pension systems that behave in opposite ways. Contributory pensions, financed by worker and employer contributions through IMSS and ISSSTE, are contractually fixed and growing with the number of retirees. Non-contributory transfers, financed from the budget, are discretionary and politically expandable. In 2026 the budget froze the first and expanded the second, and that is the decision that matters.

Coverage. The share of the population covered by public health insurance fell from 77.1% in 2020 to 72.5% in 2025. Coverage is the variable that determines whether an ageing population shows up as fiscal cost or as household cost. When coverage falls while the old population grows, the cost does not disappear. It moves to the family, and then to the private clinic.

What the 2026 Budget Actually Did

The 2026 expenditure budget allocates 2.3 trillion pesos to pensions, an increase of 3.7% overall. That headline number hides the structure.

Contributory pensions, the ones that depend on contributions from workers, employers and the state, rise by 0.05%. The IMSS pension budget falls 2.5%. The ISSSTE budget falls 2.3%. The number of pensioners grows about 3% a year. Meanwhile the non-contributory old-age pension rises 5.2%, the disability pension 20.8%, and the new pension for women aged 60 to 64 rises 266%, expanding to three million beneficiaries.

Table 2: The 2026 pension budget, by line

Line 2026 change Beneficiaries Political status
Total pension spending +3.7% — 2.3 trillion pesos
Contributory pensions +0.05% about 3% more each year Contractual
IMSS pension budget -2.5% largest block of retirees Contractual
ISSSTE pension budget -2.3% public-sector retirees Contractual
Old-age pension, 65 and over +5.2% 13.7 million Discretionary
Disability pension +20.8% 2.0 million Discretionary
Pension for women aged 60-64 +266% 2.8 million registered Discretionary
Total social programme beneficiaries — 42.8 million —

Two things follow, and they are not ideological.

First, the contributory system is being asked to deliver a 3% larger caseload on a budget that grows by five hundredths of one percent. That is arithmetically a cut in the real value of each pension, before inflation. Divide 1.0005 by 1.03 and the real value per beneficiary falls 2.9%. Add 4% inflation and the fall is 6.6% in a single year.

Second, the non-contributory system is becoming the larger growth engine. Thirteen point seven million people receive 6,400 pesos every two months, which is 3,200 pesos a month, about US$171 at 18.7 pesos to the dollar. The women’s pension pays 3,100 pesos every two months, 1,550 a month, about US$83. Multiply by beneficiaries and the two transfers cost roughly 578 billion pesos a year, or 25% of the entire pension budget.

That 25% is the number to hold onto. A quarter of Mexico’s pension money now moves through programmes that a future government can change with a budget line, and three quarters moves through contracts that a future government cannot. The fiscal risk is not that pensions are too generous. It is that the rigid part is frozen while the flexible part expands, and the flexible part is the one that reaches the poorest old people.

The Arithmetic of a Frozen Line

Here is where an ageing population becomes a budget problem rather than a demographic one.

The pension bill passed 6% of GDP in the 2026 budget and approaches a quarter of net public spending, according to the Centre for Economic and Budgetary Research. Six percent of GDP is not remarkable against the OECD, whose public pension spending sits in the region of 8%. What is remarkable is the ratio to the old-age share.

Divide 6% by 14.7% and Mexico spends about 0.41 percentage points of GDP for every percentage point of population aged 60 and over. Do the same for an OECD average of roughly 8% of GDP and roughly 24% of population aged 65 and over, and the figure is 0.33. Mexico is spending about a quarter more per old person, relative to its output, than the rich-country average.

The comparison has an obvious flaw and it runs in one direction. Mexico’s 14.7% counts people aged 60 and over, while the OECD’s 24% counts 65 and over. Using the higher threshold for Mexico would shrink the denominator and raise the ratio further, so the flaw makes Mexico look cheaper than it is, not more expensive. The conclusion survives the correction.

Table 3: Pension spending against old-age share

Measure Mexico, 2026 OECD reference Ratio
Public pension spending, % of GDP 6.0 about 8.0 0.75
Population above the threshold, % 14.7 (60+) about 24 (65+) 0.61
Spending per point of old-age share 0.41 0.33 1.23
Share of net public spending about 25% — —

A country that spends like a rich country on pensions while collecting taxes like a middle-income one has three options, and it is worth naming them plainly because every Mexican budget since 2020 has chosen among them implicitly.

  • Raise contributions or taxes, which hits the formal sector that is already paying.
  • Cut the real value of contributory pensions, which is what a 0.05% increase against 3% more pensioners does by default.
  • Expand non-contributory transfers and accept that the fiscal cost grows with the elderly population rather than with the wage bill.

The 2026 budget chose the second and the third at the same time. That is a coherent political strategy and an incoherent fiscal one, because the two choices have different growth rates.

The ratio has a clock on it, and the clock is easy to read. If the number of pensioners grows 3% a year while the number of registered workers grows 1%, the ratio of contributors to retirees falls 1.9% a year, and 17.8% over a decade. That is not a crisis scenario; it is the current trend extended. To hold the ratio flat, registered employment has to grow at the same 3% as the pensioner count, which in a country where informal work still accounts for a majority of employment is a labour-formalisation target rather than a growth target. Framed that way, the pension debate and the informality debate are one debate, and the 2026 budget treated them as two.

Who Is Hit First: Women Aged 60 to 64

The distributional answer is unusually clear, and it comes from the design of the new programme rather than from advocacy.

A woman who turns 60 in Mexico in 2026 and who spent her working life in the informal economy has no contributory pension, because she never had an employer contributing on her behalf. She becomes eligible for the women’s pension at 60, four years before the universal old-age pension at 65, and she receives 1,550 pesos a month, about US$83.

Two point eight million women are registered. The budget for that line rose 266% in one year, which is the largest percentage increase in the entire pension bill and the clearest statement of political priority in the 2026 budget. It is also a recognition of a real gap: Mexican women have lower formal labour participation, more interrupted contribution histories, and a longer life expectancy than men, which means they draw a smaller pension for more years.

The programme is means-tested by age and gender, not by contribution history, so it reaches exactly the group the contributory system never covered. That is its strength. Its weakness is that 1,550 pesos a month is not a pension. It is a transfer that covers part of a household’s food bill, and it will be paid for as long as the budget line exists.

The second cohort is less visible. Workers hired before July 1997 fall under the 1973 pension law, which calculates the benefit from the average salary of the last five years rather than from an individual account. That group had a legal route to raise its own pension by making voluntary contributions at a higher declared salary, known as Modalidad 40.

On 22 October 2026 that route narrowed. New entrants can only contribute on the last salary registered with the institute plus one unit of measurement, with the UMA set at 117.31 pesos a day for 2026. Retroactive payments from before the application date are no longer possible, and self-employed workers registered under Modalidad 10 cannot also take Modalidad 40. For a worker who was planning to spend five years raising his declared salary before retiring, the option closed on a specific date, and the difference between the pension he expected and the one he will receive is not a projection. It is a subtraction.

Two Indicators That Are Actually Independent

Forecasts about ageing are cheap. What is expensive is knowing which number to watch, and the two numbers below are chosen because they move for different reasons.

The first is the ratio of IMSS-registered workers to the population aged 60 and over. This is the contributory base divided by the people it must support, and it is published monthly. If the ratio rises, formal employment is outrunning ageing and the contributory system can hold. If it falls, every promise in the 1973 and 1997 laws becomes a claim on general revenue.

The second is private spending on geriatric care. IMARC put Mexico’s geriatric healthcare market at US$20.58 billion in 2025. This indicator measures the cost that has already been pushed out of the public system into households. It is independent of the first because it responds to coverage, not to employment: when public health coverage falls from 77.1% to 72.5%, the private market grows whether or not more people have formal jobs.

Table 4: The two indicators, and what each one is measuring

Indicator Source Frequency What a move means
IMSS-registered workers per person aged 60+ IMSS Monthly Contributory solvency
Private geriatric care spending IMARC and clinic filings Annual Cost shifted to households
Public health coverage share INEGI Annual Whether the shift accelerates
Ageing index INEGI Annual Speed of the demographic turn

Watch the first two together. If registered workers per old person is stable and private geriatric spending is growing at double digits, Mexico is not facing a pension crisis; it is facing a care crisis, and the money is already leaving households to pay for it. If both deteriorate, the pension problem and the care problem arrive in the same fiscal year, which is the scenario that the 2026 budget’s structure makes likely.

What Would Prove This Wrong

Three observations would break the argument, and each is measurable within two years.

  • Fertility recovers above 1.6. A rebound of that size would require either a large-scale childcare expansion or a change in housing costs that no current policy implies. If it happens, the 2045 dependency ratio is materially better than the schedule above.
  • Formal employment grows faster than the old population for three consecutive years. IMSS registrations have grown in most years since 2010, but rarely faster than 3% net. Three years above 5% would mean the contributory base is winning.
  • Remittances to households headed by someone over 65 rise sharply. Mexico received record remittances through the 2020s. If those flows are increasingly directed at elderly households, the household sector is absorbing the coverage gap and the fiscal crisis is deferred, not solved.

Put a number on the second observation. Registered employment growing 5% a year against a pensioner count growing 3% raises the contributor-to-retiree ratio 19.4% over ten years, which is enough to carry the 1973 cohort through its peak drawdown without a real cut. That is the size of the move required, and it is why the formalisation rate rather than the fertility rate is the variable to argue about in the next two budgets.

Two of the three are about the labour market, which is the variable that Mexican pension debates consistently underweight. The demographic schedule is set. What is not set is how many people are paying into the system while the schedule unfolds.

Data Basis, Two Limits, and the Number I Could Not Find

The demographic figures come from INEGI’s 2025 inter-census survey as reported in Mexican statistical coverage, and the ageing index comparison uses the 2020 census as the base.

  • Population 130,392,389, aged 60 and over 19,204,670, median age 32, ageing index 68.2, life expectancy 75.5 and public health coverage 72.5% are 2025 INEGI figures, with the 2020 comparators of 47.7 for the ageing index and 77.1% for coverage stated in the same releases.
  • Fertility of 1.2 in 2024 against 1.9 in 2019 is INEGI data reported through Mexico News Daily.
  • The 2.3 trillion peso pension total, the 3.7% overall increase, the 0.05% contributory increase, the 2.5% and 2.3% cuts to IMSS and ISSSTE, and the 6% of GDP and quarter-of-net-spending ratios are from the Centre for Economic and Budgetary Research’s analysis of the 2026 expenditure budget.
  • The 13.7 million old-age beneficiaries at 6,400 pesos bimonthly, the 2.8 million women registered at 3,100 pesos bimonthly, the 266% increase and the 42.8 million total social programme beneficiaries are from the Welfare Ministry’s 2026 briefing.
  • The Modalidad 40 changes, the one-UMA limit and the 117.31 peso daily UMA for 2026 are from the IMSS decree of 21 October 2026 as reported by El Pais on 22 October 2026.
  • The US$20.58 billion geriatric healthcare market is IMARC Group’s 2025 estimate.

Two limits deserve stating. The first is that INEGI’s 2025 figures come from an inter-census survey rather than a census, so the denominators carry sampling error that the published tables do not fully express; the ageing index in particular is sensitive to the estimate of the 0-14 population, which is the hardest group to count. The second is that the OECD comparator uses a 65-and-over threshold against Mexico’s 60-and-over, which I have flagged rather than corrected, because correcting it properly requires age-specific spending data that neither the OECD nor the Mexican finance ministry publishes at that granularity.

One number I could not find is the one that would settle the care question: the share of Mexican households with at least one member over 65 that report out-of-pocket health spending above 30% of household income. The national health and nutrition survey collects the components but not in a form that is published annually at that threshold. Until it is, the private geriatric market size is the best available proxy, and a market size is a weaker instrument than a household survey.

Sources

This article was prepared by the expert team at Global Infinity Labs, drawing on insights and data provided through its MCP data services.

About Global Infinity Labs

Global Infinity Labs is an AI innovation company specializing in MCP data services.

Email: support@globalinfinitylabs.com



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