Some observers have attributed the decline in GDP to a surge in imports, arguing that firms and households brought forward purchases of foreign goods in anticipation of new tariffs, and that without this shift, GDP would not have declined. While this explanation may seem plausible at first glance, it reflects a misunderstanding of how GDP is measured in the national accounts.
The role of imports in GDP accounting
It is useful to start by considering how GDP is measured. Real GDP captures the value of domestic goods and services produced and sold. These goods and services are purchased by households (personal consumption), by businesses (investment), by the government, and by foreign buyers (exports). However, domestic consumers and firms also purchase goods and services from abroad. Since the data on consumption and investment does not distinguish between goods and services bought from abroad, imports must be subtracted.
This subtraction does not imply that imports reduce economic activity. Instead, it corrects for the fact that imported goods are already included in the consumption and investment data. Without the adjustment, GDP would overstate domestic production by including foreign output.
Imports and front-loaded demand
Consider, for example, a household purchasing European wine ahead of expected tariffs. The purchase raises consumption expenditure, contributing positively to GDP. But because the wine is imported, it also raises imports, which are subtracted. These two effects cancel out, leaving GDP unchanged. The same logic applies to a firm increasing its imports of vehicles or equipment for inventory purposes: the purchase boosts investment, but this is offset by the corresponding import entry.
In both cases, imports enter the GDP calculation with a negative sign, but only to remove the foreign-produced component of domestic spending. The increase in imports does not exert an independent, negative impact on measured output.
The broader picture
Imports themselves do not directly reduce GDP. For imports to weigh on economic output, they must displace spending on domestically produced goods and services. This dynamic may have been at play in Q1, when final sales of domestic product declined by 2.5% even as final sales to domestic purchasers rose by 2.3%. One possible explanation is that firms and consumers diverted spending towards imported goods, leaving less room in their budgets for domestic purchases.
Another possibility is that the announcement of new tariffs introduced a wave of uncertainty, prompting households and businesses to hold back on most forms of spending - except for imports expected to rise sharply in price. This interpretation reconciles the strong import demand with the drop in domestic output and is consistent with the collapse in consumer sentiment observed during the quarter. That said, it is too early to draw firm conclusions, and subsequent data may shed further light on the underlying dynamics.
