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The Telegraph
Poland’s prime minister got one thing wrong about Britain
Polish prime minister Donald Tusk promises that by 2030 Poles will be better off than Britons
Polish prime minister Donald Tusk promises that by 2030 Poles will be better off than Britons - Anadolu

“Il sorpasso” (the overtaking), Donald Tusk, the prime minister of Poland, seemed to proclaim in promising that as measured by GDP per capita, Poles will be richer than their British counterparts by 2030.

This was the triumphant term used by the Italian press in 1987 when thanks largely to exchange rate movements, Italian GDP briefly surpassed the UK.

It didn’t last long. Using US dollars as the measure, the Italian economy is today 34pc smaller than its UK counterpart. The comparison looks slightly better in per capita terms, but at around 20pc below Britain, not much.

So what to make of Tusk’s claim, made last week to coincide with the 20th anniversary of Poland’s accession to the European Union, and intended to make the point that Poles are much better off inside the EU than Britain is outside it?

The claim is not new. Similar projections were used last year by the Labour leader, Sir Keir Starmer, to highlight supposed Tory failure.

“The British people are falling behind while our European neighbours get richer, in the east as well as in countries like France and Germany,” Starmer said. “I’m not comfortable with that. Not comfortable with a trajectory that will soon see Britain overtaken by Poland.”

Can Poland really be as close as claimed to catching Britain up? And could it actually be true, as Tusk implied, that things would have been so much better for the UK had it remained in the EU?

Tusk’s claims, like those of Starmer, are based on long term World Bank forecasts for economic growth. These do indeed seem to imply that Poland will overtake the UK in per capita terms round about the turn of the decade, with continued stagnation in the UK progressively outstripped by strong growth in Poland.

Yet all such comparisons depend vitally not just on the inexact science of economic forecasting, but on what parameters are used, and particularly what happens to exchange rates.

For instance, in US dollar terms, national income per head in Poland is still only $23,000 (£18,000), or less than half that of the UK. It would take economic growth of well in excess of 3pc per annum for Poland to catch up with Britain on that measure. According to separate International Monetary Fund projections, it will not.

In current dollar terms, Polish GDP per head rises to only $29,300 by 2029, according to the IMF – still less than half that projected for the UK.

If we instead take purchasing power parity as the measure, which attempts to adjust for the fact that the cost of living is substantially lower in Poland than Britain, then Poland is already richer than the UK – $49,000 per capita against $47,000. That gap is forecast by the IMF to widen further over the next five years to $63,500 against the UK’s $50,000.