Ireland spent most of the 20th century watching its young people leave for work in London and Boston — and 40 years later, their descendants started coming home to work at the European operations of Apple, Google, and Pfizer, in a country whose GDP per capita now ranks higher than Germany's

For most of the last century, the defining fact of Irish economic life was departure. People left in the 1880s, in the 1950s, and again in the 1980s, boarding boats and later planes for Britain and the United States because the work was there and not at home. In the twenty six counties, population fell from about 3.9 million in 1881 to around 2.8 million by the early 1960s, a slow demographic drain with few parallels in Europe.

Four decades on from the last great wave, the direction of travel has reversed. Ireland now hosts the European operations of Apple, Google and Pfizer, its population has climbed past five million, and on the standard measure its output per head sits well above Germany’s. Migration is the settled part of that story, and the more interesting one. Its economic headline needs more careful handling, and we will come to it.

A century of leaving

Twentieth century Irish emigration is easy to state and hard to absorb. In its account of Ireland’s long transition from origin country to destination, the Migration Policy Institute records major peaks of departure in the 1880s, the 1950s and the 1980s. A separate report on the re-emergence of Irish emigration, published by the same institute, put the loss in the 1950s alone at close to fifteen per cent of the population. In the 1980s the annual outflow peaked at more than 70,000 people in 1989.

Britain, not America, was the main destination for most of the century. London and the industrial cities of England absorbed generations of Irish workers, with Boston, New York and Chicago taking the older transatlantic share.

Cumulatively, that produced a diaspora the Irish government estimated in 2017 at around 70 million people of Irish descent, against a resident population then of well under five million. For a long time the country’s most reliable export was its own young.

When the flow turned

Then, in the mid 1990s, the flow turned around.

During the growth years known as the Celtic Tiger, inflows began to exceed outflows on a sustained basis for the first time, after a brief exception during a 1970s boom. Many of the first movers were returning Irish nationals rather than foreign arrivals. State agencies actively courted them: a scheme run through the national training body FÁS set out to bring skilled emigrants home, and those who returned often brought children born in Britain or the United States.

A demographic milestone came later. In 2022 the Republic’s population passed five million for the first time since 1851, before the worst of the Famine had fully registered in the census. A country that had spent a century shrinking had started to fill up again.

Momentum stalled more than once.

After the 2008 financial crash, emigration returned sharply, with more than 80,000 people leaving in 2013, a sign that the new prosperity still sat on foundations that could shift.

The companies, and the people who came back

Those companies are real and long established in Ireland. Apple opened its first facility outside the United States in Cork in 1980, a manufacturing plant with 60 staff. By its own account the Cork campus now serves as the company’s European headquarters and employs around 6,000 people drawn from more than 90 nationalities, a figure Apple set out when it marked forty years in Ireland. Google runs its EMEA operations from Dublin’s docklands with a workforce in the thousands, and Pfizer is among the pharmaceutical multinationals with large Irish manufacturing operations.

Scale matters more than any single logo. American multinationals account for about a tenth of all private sector employment in Ireland, according to reporting on the sector’s weight in the economy. A 2023 analysis by the economist John FitzGerald for the Economic and Social Research Institute found that multinationals of all nationalities paid about 37 billion euro in wages, close to a third of the national wage bill of 111 billion euro. US-owned firms accounted for roughly half of that sum. On those figures, American companies alone pay something closer to a sixth of all wages in the Republic, still a heavy share to rest on foreign ownership.

What the GDP figure actually counts

Ireland’s gross domestic product per head is now about double Germany’s. That looks like a plain statement of relative wealth, but Irish GDP measures something unusual.

Much of the number reflects the accounting activity of foreign multinationals rather than production or income reaching Irish residents. When Apple relocated intellectual property assets worth around 300 billion euro to Ireland, the country’s reported GDP jumped by 26.3 per cent in a single year, prompting the economist Paul Krugman to coin the phrase leprechaun economics in 2016. The distortion was so pronounced that the Central Statistics Office and the Central Bank developed a separate measure, modified gross national income, or GNI*, designed to strip out the depreciation of foreign owned intellectual property, aircraft leasing and the profits of redomiciled companies.

In 2024 the CSO put Irish GDP at about 533 billion euro, while the Department of Finance estimated GNI* at roughly 312 billion euro, as the Irish Times set out in its account of the return of leprechaun economics. That is a gap of more than 200 billion euro, reported output that never really reached the domestic economy. On GNI* per head, Ireland is a prosperous country, but not the outlier the GDP ranking implies.

The dependence underneath

That same concentration is now the main source of risk. A tenth of private employment resting on foreign multinationals is a narrow base, and the corporate tax receipts that fund much of Irish public spending come from a small number of very large companies.

Brussels made that concrete: the European Commission’s finding that Ireland had granted Apple unlawful tax advantages, upheld by the EU’s Court of Justice in 2024, required the recovery of about 13 billion euro, and it turned on the Cork operation at the centre of this story. More recently, the prospect of United States tariff and tax changes has raised a question Irish economists have circled for years: how much of the model would survive a decision in Washington to make onshoring profits in Ireland less attractive.

Domestically, the pressure shows up in housing. Well paid multinational employment, concentrated in Dublin and Cork, has pushed accommodation costs to levels that returning workers and locals alike now find hard to meet, a strange complaint for a country that spent the twentieth century worried about people leaving.

Return migration is genuine, and so is the wealth it brought to households that would once have had to leave. That balance holds only while the accounting behind the headline figure stays worth the trouble, and tax or trade decisions abroad could change it. Families came home for the jobs. Whether the jobs stay is decided in Washington and Brussels, not in Dublin.