It is generally understood that Gross Domestic Product (GDP) does not include the value of imports. It is, however, less well appreciated that in the System of National Accounts tariffs are treated as domestic value added. That is, customs duties are included in GDP.
From the first to the second quarter of this year customs duties surged $170.7 billion, from $97 billion at an annual rate to $267.7 billion -- an annualized growth rate of 5700%! -- as new tariffs imposed by the Trump Administration took effect. All else equal, if that increase in tariffs had immediately passed through to prices faced by final demanders of domestic product, the annualized rate of change in the GDP price index would have spiked nearly 3 percentage points in the second quarter. As it happened, GDP inflation in the second quarter was tame at 2.1%. Obviously, there were tariff slips twixt cup and lip.


Global