Deutsche Bank Research takes a closer look at the practical challenges of implementing a soft US dollar policy in light of the potential policies of a second Trump administration. Analysts highlight the obstacles and limitations of such a strategy and argue that tariffs and the associated strong impact on the US dollar are likely to determine market outcomes.
Theoretical Implications of a Weak Dollar Policy
A soft US dollar policy seeks to weaken the dollar through intervention and/or capital controls. To achieve this would require very large-scale financial market interventions, possibly in the trillions of US dollars, or the implementation of costly capital controls. The analysis notes that a significant dollar devaluation of up to 40% would be required to eliminate the trade deficit.
Challenges of unilateral foreign exchange intervention
Proposals to weaken the dollar include the creation of a foreign exchange reserve fund of up to $2 trillion. This approach would require significant additional financial debt, creating a fiscal burden and potentially causing net interest expenditures of more than $40 billion per year. Such an intervention would likely face significant political and practical obstacles, especially given the sheer scale of the effort required. The recent experience of the Japanese Ministry of Finance, which disbursed $63 billion in just two days, highlights the enormity of the challenge. To scale this up and impact the US dollar would require at least $1 trillion, which is not feasible.
Constraints on multilateral intervention
Multilateral intervention is constrained by the G7 commitment to market-determined exchange rates and the limited foreign exchange reserves of the major economies. Central banks in the G10, except Japan, do not have sufficient reserves to intervene effectively. Past examples, such as the Plaza Accord, had significantly larger reserves and smaller capital markets compared to today’s situation.
Potential capital flight
Encouraging capital outflows from the United States could be another approach to weakening the dollar. Past attempts, such as those by Switzerland in the 1970s, have met with limited success. Measures such as taxes on foreign deposits or the imposition of residency-based requirements could be considered, but broad capital controls could be at odds with President Trump’s stated policy of maintaining the dollar’s status as the global reserve currency.
The collapse of the Federal Reserve’s independence
Violating the independence of the Federal Reserve Board would be the most effective way to weaken the dollar, but it is unlikely. Past examples, such as the 2022 UK crisis, have shown that undermining central bank independence can lead to higher inflation risk premiums and higher long-term yields. However, with only a few Federal Reserve Board appointments up for renewal and subject to Senate confirmation, this scenario seems unlikely.
While the Trump Administration may apply rhetorical pressure on the dollar, implementing a weaker dollar policy would require significant monetary intervention, capital controls, or loss of Fed independence. Analysts suggest that tariffs and their effect on a stronger dollar are a more likely outcome.
