Why US-EU Trade Spats Are Boosting the Euro

Recent trade friction between the United States and Europe is creating a paradoxical dynamic for the EUR/USD currency pair, providing unexpected support for the euro even as risks to European growth persist.

While the immediate threat of a new 10% US tariff on imports from eight European nations has subsided, the episode serves as a stark reminder that trade and political uncertainty are back on the agenda. This has left investors on high alert for any further escalation.

The Dollar's Dilemma: How Trade Threats Weaken the USD

According to analysis from Bank of America, the EUR/USD exchange rate is caught between two powerful, opposing economic forces.

• On one hand, escalating bilateral trade disputes threaten to slow European growth, which would typically be a negative factor for the euro.

• On the other hand, Europe is a critical source of funding for the US current account deficit. Renewed stress on this relationship can therefore undermine the dollar instead.

Recent market movements confirm this dollar-negative effect. During the most recent tariff scare, US equities declined, US interest rates rose, and volatility increased—yet the EUR/USD pair moved higher.

Bank of America notes that this reaction was less pronounced than a similar event in April 2025, likely due to lower shock value and widespread expectations of an eventual de-escalation. Nevertheless, the direction of the market's response was consistent.

Market Reaction Contradicts Traditional Logic

Historically, the euro has shown a tendency to strengthen following surprise tariff escalations involving the European Union. Analysis from Bank of America estimates that the average excess gain for the currency against its trend has been nearly 1% in the week following such announcements.

This trend highlights a significant shift in market dynamics.

The Disconnect Between US Yields and the Dollar

A key change is that higher real yields in the United States are no longer automatically translating into a stronger dollar against the euro. The traditional relationship appears to be breaking down, allowing the euro to gain ground even when US rates are rising.

Gauging the Economic Impact and Future Outlook

Should the threatened tariffs be reinstated, their direct economic impact would likely be limited unless they were expanded to cover the entire EU. The eight countries originally targeted represent only about 11% of US imports. Furthermore, since most are within the EU single market, trade flows could adjust to mitigate the damage.

The more significant cost would arise from a sustained increase in uncertainty, which could depress investment across Europe if the situation remains tense for a prolonged period.

Looking ahead, medium-term factors could also play a crucial role. Bank of America points out that growing political momentum for fiscal spending in Europe has been a supportive factor for EUR/USD. This contrasts with continued US investment focused on artificial intelligence. A coordinated EU response to trade pressure, particularly one centered on services rather than goods, could provide further strength to the euro, assuming the conflict remains contained.