A Weaker Dollar Is Not a Dethroned Dollar: Reading the Tariff Shock Correctly

For a few days in April, markets behaved in a way the textbooks say they should not. After Washington unveiled sweeping tariffs at the start of the month, the dollar fell against most major currencies while yields on long-dated Treasury bonds rose. In a normal crisis, investors run toward the dollar and into Treasuries. This time a meaningful slice of them seemed to be running away from both. Commentators who have predicted the end of dollar dominance for two decades suddenly had a chart to point to.

The episode deserves to be taken seriously, but it also deserves to be read precisely. A currency can lose value, and even lose some of its safe-haven reputation, without losing its role as the core of the international monetary system. Confusing the two leads to bad analysis and, for investors, to bad decisions. The more useful question is not whether the dollar is weaker this spring. It is whether anything has changed in the machinery that makes the dollar central.

What actually moved

The April sell-off combined three forces. First, a growth scare: broad tariffs are a tax on American consumers and firms, and markets priced a slower US economy. Second, a policy-credibility discount: abrupt announcements, reversals and pauses made US economic policy look less predictable, and investors demand compensation for unpredictability. Third, positioning: foreign investors had piled into US equities and bonds for years, and even a modest reduction in that overweight produces large flows.

None of these is trivial. The credibility point in particular goes to the heart of why the dollar is trusted. Reserve status rests on the rule of law, open capital markets, deep and liquid government debt, and institutions that behave consistently. When any of those pillars wobbles, the premium investors pay to hold dollars shrinks. That premium is sometimes called the "exorbitant privilege", and it is a real economic benefit for the United States: cheaper borrowing and a constant foreign appetite for its assets.

The long campaign against the dollar

The tariff shock landed on top of a slower, older trend. Since the 2014 annexation of Crimea, and far more intensely after 2022, when Western governments froze a large portion of Russia's central bank reserves, a group of countries has worked to reduce exposure to dollar-based finance. China has expanded yuan trade settlement and its CIPS payment system. Russia and India have experimented with settling oil trade in rupees and other currencies. The BRICS summit in Kazan last October discussed cross-border payment initiatives, and central banks, above all in emerging markets, have been buying gold at a record pace.

There was also a telling institutional exit. Project mBridge, a platform linking central bank digital currencies of China, Hong Kong, Thailand, the UAE and later Saudi Arabia, was incubated by the Bank for International Settlements. In October 2024 the BIS stepped back from the project, leaving it to the participating central banks. Many read that as the BIS avoiding a platform that could become a sanctions-resistant channel.

Every previous obituary for the dollar confused a bad year for America with a good alternative for everyone else.

Why displacement is so hard

To replace the dollar, a rival needs more than political motivation. It needs a currency that foreign savers want to hold in size, which requires open capital accounts, a large supply of safe assets, and legal predictability. The euro has the legal system but a fragmented bond market. The yuan has scale in trade but tight capital controls. Gold has no counterparty risk but pays no interest and cannot run a payment system on its own.

• Invoicing: a large share of world trade, including much trade that never touches the US, is still priced in dollars.
• Funding: banks outside America borrow and lend in dollars on a huge scale, which creates constant dollar demand.
• Reserves: according to IMF data, roughly 57-58% of disclosed global reserves remain in dollars, down from above 70% around 2000 but far ahead of the euro.
• Foreign exchange: the dollar sits on one side of close to 90% of currency trades, as measured by BIS surveys.

These are network effects. Each user of dollars makes the dollar more useful for the next one, and escaping requires coordinated movement by many actors at once. That coordination is exactly what BRICS has found difficult, because its members have divergent interests. India in particular has little appetite for replacing dollar dependence with yuan dependence. Washington, meanwhile, has signaled that it would answer any BRICS currency project with punitive tariffs, raising the cost of moving first.

Digital money enters the argument

A newer layer complicates the picture. In January, the US administration issued an executive order that, among other things, prohibits federal agencies from pursuing a US central bank digital currency, while expressing support for dollar-backed stablecoins. Congress is working on stablecoin legislation that would regulate issuers and require reserves in cash and short-term Treasuries. The logic is strategic: if private dollar tokens circulate globally on public blockchains, they extend dollar reach into places banks never served.

China has taken the opposite route. The e-CNY is a state-issued digital currency tested in pilots across many cities, and Beijing sees multi-CBDC platforms as a way to settle cross-border payments outside correspondent banking. Europe, for its part, is in the preparation phase of a digital euro, partly motivated by fear of dependence on US card networks and dollar stablecoins. The contest over the dollar is increasingly a contest over rails, not just over currencies.

What April really told us

The April turbulence was a warning about the policy premium, not a regime change. The dollar's dominance rests on institutions and networks that alternative systems still cannot match, and the most credible challengers are building parallel pipes rather than a replacement currency. The real risk for the United States is slow erosion driven by its own unpredictability, which would make those parallel pipes more attractive at the margin. For investors, the lesson is to separate currency cycles from structural shifts, and to remember that this is analysis, not investment advice.