The Fiscal Effects of Immigration

How economists measure whether immigrants pay more in taxes than they receive in public services, and why the answer depends so much on assumptions.

The fiscal impact of immigration refers to its effect on government budgets: the taxes immigrants pay compared with the cost of the public services and benefits they use. A person’s net fiscal contribution is what they pay in minus what they receive. This question comes up often in public debate, and the honest answer from research is that it depends heavily on who migrates, at what age, and how the calculation is done.

Age and the life cycle

The biggest single factor is age, because fiscal contributions follow a life-cycle pattern for everyone, whether native-born or immigrant. Children cost public budgets money through schooling. Working-age adults generally pay more in taxes than they receive. Older people tend to receive more through pensions and health care. Many migrants arrive as young adults, after another country has paid for their childhood education, and start working and paying taxes immediately. This tends to make recent working-age migrants look fiscally favourable, while migrants who arrive older or with dependent children show a different pattern.

Education and earnings

Education matters too. Highly educated migrants in well-paid jobs usually pay much more in tax than they receive. Migrants with less education and lower wages may pay less in taxes, and may be more likely to use certain benefits where they are eligible, so their net contribution can be smaller or negative in a given year. The same is true for native-born workers with similar earnings; the pattern is about income and age, not origin as such.

Two ways to count one family

Imagine an immigrant couple who arrive at age 25 and have two children. In their first decade, they pay about 15,000 dollars a year in combined taxes, while their children's public schooling costs about 25,000 dollars a year. Counted over those ten years alone, the family looks like a net cost of about 10,000 dollars a year. But if you also count the taxes those children pay as working adults for forty years, as one major American study did when assessing the second generation, the picture can reverse. How far into the future you look can change the answer entirely.

Why estimates disagree

Studies can reach different conclusions because of choices researchers make. A static versus dynamic analysis is one key difference: a static analysis looks at one year’s taxes and spending, while a dynamic one follows people over their lifetimes and may include their children. Another choice is how to count public goods, services like national defence whose cost barely changes when population grows. If researchers assign immigrants an equal share of those costs, immigrants look more costly; if they count only the extra cost of adding people, immigrants look less costly.

What the broad evidence says

Large reviews generally find that immigration’s net fiscal effect is modest, either slightly positive or slightly negative as a share of the economy, rather than very large in either direction. The OECD has found that in most of its member countries, immigrants’ fiscal contribution is broadly similar to that of native-born residents. A 2016 United States National Academies report found that first-generation immigrants were, on average, more costly to state and local governments, largely because of the cost of educating their children, while the second generation were among the strongest net fiscal contributors of any group.

Trusting a single headline number

Claims that immigrants are a huge fiscal drain, or a huge fiscal boost, usually rest on particular assumptions about time horizon, public goods, and which groups are counted. Before accepting any single figure, it is worth asking how it was calculated and what was left out.

Key takeaways

Fiscal impact compares taxes paid with public services and benefits received.
Age at arrival is a major factor, because contributions follow a life-cycle pattern.
Education and earnings shape net contributions for immigrants and natives alike.
Static and dynamic analyses, and how public goods are counted, can change results.
Broad reviews generally find modest net fiscal effects, not large ones in either direction.