In 2023, South Korea’s total fertility rate fell to 0.72, the lowest on record. In 2024, it rose to 0.75, still far below replacement.
Over the same period, governments kept expanding financial incentives for births. South Korea’s own policy debate references cumulative low-birth-response spending in the hundreds of trillions of won over roughly two decades, while fertility stayed far below replacement (Yonhap, Korea Herald).
The puzzle is not that policymakers ignore the demographic trend. The puzzle is that they repeatedly choose interventions that preserve the current cost structure of family formation.
The working hypothesis: wealthy countries systematically prefer pronatalist tools that run through tax and transfer architecture because those tools avoid the politically costly interventions that would lower housing costs and expand universal childcare at scale.
The consensus view deserves to be steel-manned. Cash support does matter for families at the margin. A better child allowance can reduce stress, improve household liquidity, and change timing decisions.
But timing support is not the same as constraint removal.
When the binding constraint is childcare access, a tax credit paid later cannot create a daycare seat now. When the binding constraint is housing cost, a transfer layered on top of high rents does not fix household balance sheets.
Bulgaria’s policy mix is useful because it targets operating constraints directly: public nursery and kindergarten fees were removed in 2022, with implementation grounded in amended preschool legislation and state-gazette action (Bulgarian State Gazette notice, Natlex legal text).
By contrast, many high-income pronatalist packages remain heavily transfer-first. Hungary’s family policy stack has centered tax exemptions, allowances, and transfer architecture rather than direct universal childcare transformation.
The U.S. version follows the same route. The Child Tax Credit is delivered through tax filing infrastructure, which is efficient for households with stable formal earnings and clean filing continuity. Under current law, refundability still phases in with earned income, which limits full-value access for some lower-income households (CRS overview, IRS CTC guidance).
The same structural pattern appears in immigration finance.
The American Immigration Council estimates immigrants paid $382.9 billion in federal taxes in 2022, while undocumented immigrants paid an estimated $21.5 billion in federal and $13.6 billion in state and local taxes. That labor supports fiscal capacity while fertility remains below replacement.
Housing links the story together. In South Korea, elevated housing affordability pressure and deposit-heavy rental structures raise the capital hurdle before family formation (OECD housing affordability indicators, Seoul jeonse reporting).
When policy avoids housing and childcare supply, it effectively subsidizes demand inside a constrained system.
That is why the same policy family keeps getting chosen.
What would change my mind
- If a high-cost OECD country raises fertility by at least 0.2 over five years through transfer-only policy, without major childcare expansion or housing-cost intervention, this mechanism weakens.
- If microdata shows transfer-heavy programs consistently produce the largest fertility response in lower-income households facing direct cost constraints, the routing argument is overstated.
- If countries that expanded low-cost childcare access do not outperform transfer-first peers on sustained fertility stabilization over a full decade, the central comparative claim fails.
Related: The Intervention That Isn’t Getting Built — Part II of this series: the same mechanism applied to housing affordability policy, and why the intervention that works keeps not getting chosen.
If you found this useful, the best thing you can do is forward it to one person who would push back on it. I’d rather be wrong in public than right in private.