The Swiss are voting on a radical plan to cap their population at 10 million. While the direct democracy of our Alpine friends may seem quaint to Westminster mandarins, this referendum should send a chill down the spine of every British chancellor. It is a stark reminder that when immigration runs unchecked, the native population eventually revolts. And the fiscal consequences of that revolt are rarely pretty.
The initiative, put forward by the anti-immigration Swiss People's Party, would trigger automatic deportation if the population threshold is breached. Polls suggest the measure is likely to fail, but the fact that it is even being debated signals a deep unease about the strains on infrastructure, housing, and public services.
Let me translate this into language the Treasury understands. Immigration is not just a cultural issue; it is a balance sheet issue. Every new arrival requires housing, healthcare, and education. If the state cannot keep up with supply, costs rise. And as we have seen in the UK, rents and property prices have become a national obsession precisely because they are being driven by demand that outstrips supply.
The parallel with Britain is unavoidable. Since the turn of the century, the UK population has surged by nearly 9 million, largely due to net migration. The Office for National Statistics projects it will hit 70 million by 2030. Yet our housing stock has not kept pace. The result? A housing crisis that keeps young people locked out of the market and fuels generational resentment.
This is where the market punishes political failure. When a country fails to invest in infrastructure to match population growth, productivity suffers. And when productivity falters, the tax base shrinks relative to spending. The UK's fiscal deficit is already at 4.4% of GDP. A growing population without commensurate investment is a recipe for higher borrowing costs.
Look at the gilt market. The yield on 10-year UK government bonds has been volatile, reflecting investor anxiety about the UK's long-run fiscal sustainability. If the population debate turns toxic, as it has in Switzerland, expect capital to look for safer harbours. Capital flight is the ultimate hedge fund: it moves faster than any government can react.
The Swiss know this. They have a referendum on EU free movement already on ice, and their central bank has been fighting deflation for years. But they also have a closely watched public finance record. Their debt-to-GDP ratio is around 40%, half the UK's. They can afford to be choosy about who crosses the border.
Britain cannot. Since Brexit, we have designed a points-based system that prioritises skills, but the numbers are still high. Net migration was over 600,000 in 2022. That is a staggering figure for a country struggling to build enough hospitals, roads, and houses.
The Bank of England has its hands full with inflation, but the migration-fiscal nexus is the elephant in the room. When the labour market is flooded with new workers, it can suppress wages in low-skill sectors. That might sound good for the inflation target, but it does nothing for the social cohesion that underpins stable capital markets.
Let me be clear: I am not arguing for closed borders. Free movement of labour is an economic efficiency booster in theory. But in practice, it requires the state to invest ahead of demand. British governments of all stripes have failed to do that. The result is a nation that feels overcrowded in its cities and under-resourced in its public services.
The Swiss referendum is a canary in the coal mine. If it passes, it will embolden every populist party in Europe. If it fails, the unease will remain. Either way, the message for Downing Street is that fiscal responsibility means getting a grip on migration. Not for cultural reasons, but because the maths does not add up.
Markets abhor uncertainty. A chaotic debate about population caps is not the kind of uncertainty that attracts foreign capital. The UK risks being seen as a country that cannot manage its own borders, its own budget, or its own destiny. And that is a risk no amount of yield curve manipulation can offset.
The bottom line is this: Switzerland is voting on a cap. Britain is having an argument. Neither is a solution. But the Swiss at least are confronting the issue head-on. We, on the other hand, are pretending that 600,000 new people a year can be absorbed without breaking the fiscal bank. That is a fantasy. And as any seasoned investor knows, fantasies are always punished.
