Migration and Its Impact on the Public Purse: Contributions to Taxes and Growth

When debates about migration heat up, the focus often shifts to culture, identity, or security. But the quiet, data-driven story is an economic one. Every working migrant who pays GST on groceries, files an income tax return, or contributes to provident fund is putting money into the public purse, the pool of revenue governments use to build roads, run hospitals, and pay pensions. Research from the OECD, IMF, and India’s own Economic Survey consistently shows that migrants, especially those of working age, give more to public finances than they take out, and that they actively expand the economic pie of host regions and countries.

What exactly is the “public purse”? 🔗

The public purse is shorthand for a government’s net financial position: the taxes and social contributions flowing in, minus the spending on benefits, healthcare, education, pensions, and public services flowing out. Whenever someone asks whether migrants are a “drain” or a “boost”, they are really asking about the net fiscal impact of migration, which is the difference between what migrants contribute and what they consume in public resources.

According to the Migration Observatory at the University of Oxford, this calculation includes direct taxes like income tax, indirect taxes like VAT or GST, and social security contributions on the revenue side, weighed against welfare benefits, healthcare costs, and education spending on the expenditure side. A positive net fiscal impact means migrants are net contributors. A negative one means they are net beneficiaries.

Migrants’ contribution to taxes and social benefits 🔗

The headline finding from cross-country research is striking. A landmark OECD study found that migrants contribute more in taxes and social contributions than they receive in benefits, with labour migrants having the most positive impact on the public purse. Employment, not nationality, turns out to be the single biggest determinant of whether a migrant is a net contributor.

Why working-age migrants are fiscal assets 🔗

Migrants who arrive between roughly 20 and 40 years of age bring a hidden gift to the host country: their childhood education, healthcare, and upbringing were paid for by someone else, usually their state or country of origin. The host economy gets the productive years without having paid the cost of raising them. A comparative OECD analysis across 25 countries from 2006 to 2018 identified prime working age, 25 to 54, as the single most important factor explaining the gap between migrant and native-born fiscal contributions, mainly because people in this age band are most likely to be employed.

Skills, earnings, and the size of the contribution 🔗

The fiscal benefit also scales with skill. The OECD found that migrants in high-skilled, well-paid jobs pay significantly more taxes on average than those in low-wage roles. This is intuitive: a software engineer on an H-1B visa or a doctor in the NHS pays more income tax than a construction worker, even though both may be net contributors. The UK’s Office for Budget Responsibility similarly concluded that lifetime earnings are a crucial determinant of whether a migrant is a fiscal positive over their entire stay.

An important nuance often missed in public debate: even when migrants appear less favourable on paper than natives, the gap is usually explained by lower wages rather than higher benefit claims. Analysis of EU migrants in Austria, Germany, the Netherlands, and the UK found that gaps were driven mainly by lower taxes paid, not by heavier reliance on welfare. In fact, recent EU migrants to the UK were 59 per cent less likely than natives to claim state benefits or tax credits.

The Indian internal migration story 🔗

India’s most relevant migration story is internal rather than international. The 2011 Census recorded around 45.36 crore internal migrants, roughly 37 per cent of the population. The Economic Survey 2016-17 used railway passenger data to estimate that close to 9 million people undertook inter-state migration each year after 2011, far higher than earlier estimates suggested.

These workers, mostly young men moving from Bihar, Uttar Pradesh, Odisha, and West Bengal toward Maharashtra, Delhi, Gujarat, Karnataka, and Tamil Nadu, pay GST on everything they consume, contribute to EPFO and ESIC when employed in the formal sector, and pay rent, fuel taxes, and stamp duties. They are an invisible engine of state revenue in destination states while simultaneously sending remittances that support consumption and tax collection back home.

Migration’s role in economic growth 🔗

Beyond direct taxes, migration shapes the deeper structure of an economy. Three channels matter most: the working-age population, human capital, and innovation.

Refilling the working-age population 🔗

In ageing societies, migration is the most direct way to slow the shrinkage of the labour force. The IMF notes that a larger share of immigrants than natives are of working age, so each new arrival pushes up the labour-force-to-population ratio. In the European Union, close to two-thirds of the 4.2 million jobs created between 2019 and 2023 were filled by non-EU citizens, while unemployment among EU citizens stayed at historic lows. Migrants were not displacing native workers; they were filling gaps that natives could not.

India is in a different position. With a median age in the late twenties, it is still enjoying its demographic dividend. Research published in Humanities and Social Sciences Communications estimates that India’s demographic dividend has added about 1.9 percentage points per year to growth between 1981 and 2021. But that dividend is unevenly distributed: southern states like Kerala and Tamil Nadu are ageing faster, while Bihar and UP still have very young populations. Internal migration is silently rebalancing this map, sending young workers to states whose own workforces are shrinking.

Human capital and skills transfer 🔗

Migrants do not just add bodies to the workforce; they often bring skills the destination economy lacks. An ORF analysis observes that professional migrants bring knowledge and special skills that a city lacked, adding to the quality and variety of production. Bengaluru’s IT cluster, Hyderabad’s pharma corridor, and Surat’s diamond industry all depend on talent that originally migrated from elsewhere in India or returned from abroad.

Innovation and productivity 🔗

Skilled migrants are also disproportionately involved in entrepreneurship, patenting, and research. The IMF’s G20 background note on aging and migration finds that immigrants raise total factor productivity growth through faster innovation, especially in skilled-migration contexts, and that diaspora networks and return migrants also benefit the countries of origin through remittances and knowledge transfer. Remittances alone account for about 3.3 per cent of GDP in India, money that flows into education, housing, and small business in sending regions.

Why fiscal benefits are not automatic 🔗

The positive story comes with conditions. The fiscal gains depend almost entirely on whether migrants find decent work and integrate into formal labour markets. When migrants are pushed into informal, low-paid jobs, their tax contribution shrinks and their need for public support rises.

India’s informal sector employs about 88.8 per cent of workers, with migrant earnings averaging well below the national average. This means the bulk of India’s internal migrants contribute primarily through indirect taxes like GST rather than income tax, and they often lack access to portable benefits like ration cards or health insurance in their destination states. The pandemic-era reverse migration laid bare the cost of this invisibility, both human and economic.

Policy implications: turning movement into fiscal gain 🔗

If migration is to deliver its full fiscal and economic potential, policy has to do active work. The Centre for Economic Policy Research argues that the size of inflows needed to fully offset ageing in advanced economies is often politically unrealistic, so the focus has to shift to integration and productivity of the migrants who do arrive.

Portable rights and recognition 🔗

For India, the most pressing reform is portability of welfare entitlements, ration cards, health coverage under Ayushman Bharat, and access to government schools, so that migrants are not penalised for moving. The One Nation One Ration Card initiative is a step in this direction, but coverage and awareness remain uneven across destination states.

Formalisation and skilling 🔗

Bringing more migrants into formal employment expands the tax base in two ways: through income tax and through employer-employee social security contributions. Investments in skilling, especially through programmes targeting circular and seasonal migrants, can lift earnings and therefore tax contributions, while also reducing vulnerability.

Data and governance 🔗

India still lacks granular, real-time data on migration flows. Without it, destination cities cannot plan housing, water, schools, or hospitals for the populations they actually serve, and the fiscal calculus tilts negative in the short run because services are strained while contributions are undercounted. Better registration systems and inter-state coordination would let governments capture migration’s full fiscal upside.

Pragmatic international policy 🔗

For countries facing severe ageing, the IMF cautions that restrictive migration policies may relieve short-term pressure on services but reduce labour supply, productivity gains, and capital accumulation in the long run. Coordinated, well-designed inflows of working-age migrants, combined with strong integration policies, deliver the largest fiscal and growth dividends.

The bigger picture 🔗

The evidence is consistent across very different countries: migrants, particularly those of working age and in formal employment, are net contributors to the public purse and a structural boost to growth. They cushion ageing populations, fill labour gaps, drive innovation, and expand consumer markets. The fiscal case for migration is not ideological; it is arithmetic.

The real policy question is therefore not whether to allow migration, but how to design the conditions, formal jobs, portable rights, decent housing, recognised skills, that let migrants make the maximum contribution they are capable of. When those conditions are met, both migrants and host economies win.

What do you think? If migrants are clearly net contributors to public finances, why does the political conversation around migration so often treat them as a burden? And in the Indian context, what would it take for destination states like Maharashtra or Karnataka to fully recognise the fiscal value of the inter-state migrants who power their cities?

References

1. https://migrationobservatory.ox.ac.uk/resources/briefings/the-fiscal-impact-of-immigration-in-the-uk/
2. https://www.oecd.org/content/dam/oecd/en/publications/reports/2014/05/is-migration-good-for-the-economy_82387ff9/ee27eb0d-en.pdf
3. https://migrationobservatory.ox.ac.uk/wp-content/uploads/2024/11/2024-Briefing-The-fiscal-impact-of-immigration-to-the-UK.pdf
4. https://ecas.org/wp-content/uploads/2022/10/Fiscal-Impact-of-EU-Migrants-in-Austria-Germau-the-Netherlands-and-the-UK_ECAS-2-2.pdf
5. https://www.drishtiias.com/daily-updates/daily-news-analysis/india-s-internal-migration
6. https://www.indiabudget.gov.in/budget2017-2018/es2016-17/echap12.pdf
7. https://www.imf.org/en/publications/fandd/issues/2020/03/can-immigration-solve-the-demographic-dilemma-peri
8. https://www.elibrary.imf.org/view/journals/001/2024/211/article-A001-en.xml
9. https://www.nature.com/articles/s41599-025-05042-0
10. https://www.orfonline.org/expert-speak/the-role-of-migration-in-india-s-urban-growth-story
11. https://www.imf.org/-/media/files/research/imf-and-g20/2025/g20-background-note-on-aging-and-migration.pdf
12. https://www.cdpp.co.in/articles/migration-and-economic-inequality-in-india-insights-into-sdg-10-7
13. https://cepr.org/voxeu/columns/scale-and-limits-migration-offsetting-population-ageing
14. https://www.imf.org/en/blogs/articles/2025/04/15/migration-and-refugee-policies-steer-people-and-economies-in-new-directions