Donald Trump’s sweeping tariffs and rush to downsize the federal government will slow US economic growth and accelerate inflation, leading academic economists have warned in a survey by the Financial Times.

Economists also flagged up concerns about the quality of the country’s economic statistics — vital information for investors in the world’s biggest economy — following the Trump administration’s decision to disband an influential council of advisers.

The FT-Chicago Booth poll follows two weeks of selling in US equities, triggered by Donald Trump’s tariffs on US trading partners and his administration’s efforts to sharply slim down the federal government. It also comes ahead of Wednesday’s Federal Reserve decision, in which officials will provide their economic forecasts.