Child Poverty Rate

What Is the Child Poverty Rate?

The child poverty rate is the percentage of children — typically defined as individuals under the age of 18 — living in households with income below a defined poverty line. It is one of the most closely watched indicators of social well-being, because poverty experienced in childhood carries consequences that extend far beyond the childhood years themselves, shaping educational outcomes, lifetime earnings, health trajectories, and intergenerational mobility.

As with the broader poverty rate, the child poverty rate can be measured against either an absolute or a relative threshold. In most advanced economies, the standard approach uses a relative poverty line set at 50 or 60 percent of the national median equivalised disposable household income. A child is counted as poor if the household in which they live falls below this threshold after adjusting for household size and composition.

Children do not choose the economic circumstances into which they are born, which gives child poverty a particular moral and political salience. It is widely regarded as a failure of public policy when a significant share of children grow up in deprivation, not only because of the immediate suffering involved but because of the long-term economic costs that poverty imposes on the individuals affected and on society at large.

For these reasons, many governments have adopted explicit child-poverty-reduction targets and track progress against them with the seriousness normally reserved for macroeconomic indicators. International organisations rank countries by their child poverty rates, and the comparisons often generate significant political attention.

How It Is Calculated

The child poverty rate follows the same headcount methodology used for the general poverty rate, applied to the population under 18:

$CP = \frac{N_c^p}{N_c} \times 100$

where $N_c^p$ is the number of children living in households with equivalised disposable income below the poverty line and $N_c$ is the total number of children. The result is expressed as a percentage.

Equivalisation and the Unit of Analysis

Because children do not earn income independently, their poverty status is determined by the income of the household in which they live. Household income is equivalised — adjusted for household size and composition — to account for the fact that larger households benefit from economies of scale in housing, utilities, and other shared costs.

The OECD modified equivalence scale, commonly used in international comparisons, assigns a weight of 1.0 to the first adult in the household, 0.5 to each additional adult (aged 14 and over), and 0.3 to each child (under 14). Total household income is divided by the sum of these weights to produce equivalised income:

$y_{\text{eq}} = \frac{Y_h}{1.0 + 0.5(n_a - 1) + 0.3 \cdot n_c}$

where $Y_h$ is total household disposable income, $n_a$ is the number of adults, and $n_c$ is the number of children. Each household member, including each child, is then assigned this equivalised income for the purpose of the poverty calculation.

Poverty Line Definitions

As with the general poverty rate, the relative poverty line is typically set at 50 percent of the national median equivalised disposable income:

$z = 0.50 \times m$

where $m$ is the median. Some countries and organisations use a 60 percent threshold, which produces a higher measured poverty rate. The choice of threshold is consequential — it can shift the child poverty rate by several percentage points — and must be kept constant when tracking trends over time.

Depth and Persistence

The headcount rate measures the prevalence of child poverty but not its depth or duration. The child poverty gap measures the average income shortfall of poor children relative to the poverty line, indicating how far below the threshold they fall.

Persistent child poverty — the share of children who remain in poverty for two or more consecutive years — is a particularly damaging form because sustained deprivation compounds developmental harm. A child who experiences a single year of poverty may recover with relatively little lasting effect; one who spends the majority of childhood below the poverty line faces qualitatively different risks.

Both supplementary measures are increasingly reported alongside the headline rate, providing a more complete picture of the severity and duration of childhood economic disadvantage.

Before- and After-Transfer Rates

As with the general poverty rate, the child poverty rate can be computed both before and after government taxes and transfers. The market-income child poverty rate reflects what poverty would look like in the absence of government intervention. The disposable-income child poverty rate reflects the actual situation after benefits and taxes are taken into account.

The gap between the two measures reveals the effectiveness of the tax-and-transfer system in reducing child poverty. Countries with generous universal child benefits, refundable tax credits for families with children, and robust in-kind supports tend to achieve much larger reductions than those relying primarily on market outcomes.

How to Read the Numbers

The table below provides interpretive context for relative child poverty rates (at the 50 percent of median threshold) in advanced economies.

Child poverty rates are typically higher than adult poverty rates because children are disproportionately found in household types that face greater economic vulnerability: single-parent families, large families, and families where the adults have lower educational attainment or face labour-market barriers. The gap between child and adult poverty rates is itself informative — a large gap suggests that the tax-and-transfer system is less effective at protecting children than at protecting other groups.

Trends in child poverty are driven by the interplay of labour-market conditions, family structure, and social policy. During economic expansions, child poverty tends to fall as parental employment and earnings improve. During recessions, it rises as job losses concentrate among lower-skilled workers who are more likely to have children.

Policy interventions — child benefits, earned-income supplements, childcare subsidies, and in-kind transfers such as school meals and housing assistance — can substantially offset these cyclical forces. The most effective anti-child-poverty systems combine universal transfers with targeted support for the most disadvantaged families.

Economic Significance

Child poverty is not merely a social issue; it is an economic one with consequences that compound across generations. A vast body of research documents the mechanisms through which childhood deprivation undermines future productive capacity. Children who grow up in poverty are more likely to experience food insecurity, housing instability, and inadequate healthcare — all of which impair cognitive and physical development during the critical early years.

They are more likely to attend under-resourced schools, less likely to complete secondary and tertiary education, and more likely to enter the labour market with lower skills and fewer opportunities. The result is a workforce that is less productive than it could be, an economy that grows more slowly, and a society that bears higher costs for remedial services.

The lifetime costs of child poverty are substantial. Studies that attempt to quantify the aggregate economic burden — including lost earnings, reduced tax revenue, increased healthcare and criminal-justice expenditure, and lower productivity — consistently find that the cost of child poverty to a national economy runs into the tens of billions of dollars annually. These estimates imply that well-designed prevention programmes can pay for themselves many times over, even on a narrow fiscal cost-benefit basis.

Intergenerational mobility — the extent to which a child's economic outcomes are independent of their parents' — is strongly correlated with child poverty rates across countries. Societies with high child poverty tend to exhibit low mobility: the economic circumstances of one generation are transmitted to the next through the mediating channels of health, education, and social capital. Breaking this cycle is one of the central objectives of anti-poverty policy, and the child poverty rate serves as a key performance indicator for those efforts.

From a macroeconomic perspective, child poverty constrains the future labour supply and its quality. An economy that allows a significant fraction of its youngest citizens to grow up in deprivation is underinvesting in its own long-term productive capacity. The forgone human capital shows up decades later as lower labour-force participation, lower productivity, and weaker economic growth — costs that are diffuse and delayed but very real.

For fiscal authorities, child poverty creates a tension between short-run spending and long-run returns. Expanding child benefits, investing in early-childhood education, and improving access to healthcare for low-income families all cost money in the current budget. But the evidence strongly suggests that these expenditures reduce future demands on social assistance, healthcare, and criminal-justice systems, producing a positive fiscal return over the medium to long term. The challenge lies in the time horizon: the benefits accrue over decades, while budgets are set annually.

Related Indicators

• Poverty Rate — the broader population-wide measure of income deprivation
• Gini Coefficient — overall income inequality, which shapes the environment in which child poverty occurs
• Education Spending as % of GDP — public investment in education, a critical pathway out of poverty for children
• Government Spending as % of GDP — the fiscal capacity available for child-oriented social programmes