Tax cuts are being promised by several Conservative party leadership hopefuls, but a top official at the International Monetary Fund has warned it might be better to raise them instead.
"I think debt-financed tax cuts at this point would be a mistake," said Mark Flanagan, who leads the Fund's UK team, speaking to BBC News.
The leadership contest has reignited the fierce debate over tax cuts.
Calls to tackle the soaring cost of living are growing louder.
While the former Chancellor, Rishi Sunak, has argued against cutting taxes, other candidates have touted promises including cuts to the basic rate of income tax and further cuts in fuel duty.
Tax breaks could offer some relief for households struggling to cope with the steepest increase in food and energy bills in decades.
The IMF is among the groups predicting the UK could see the slowest growth and most painful inflation of any G7 nation in 2023, thanks, in part, to reliance on fossil fuels, a big driver of inflation.
However, Mr Flanagan said tax cuts could be misguided and might even boost inflation by strengthening spending.
Money raised through tax, he argued, could instead be used to invest in the country's long-term future
Many economists believe the UK's challenges are very deep-rooted - with economic growth lagging behind many competitors since the 2007 financial crisis.
Torsten Bell, from the Resolution Foundation think tank, said this lag had "widened inequality" ever since.
The poorest households in France are now 25% richer than their UK counterparts, he said, meaning that UK households have been left less resilient to cope with the current cost of living shock.
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