The Dollar's Dominance Is Being Challenged. It Won't Fall Quickly.

The dollar's role as the global reserve currency is described by its critics as a form of economic imperialism and by its defenders as a neutral technical convenience. It is neither. The dollar's dominance creates specific advantages for the United States — lower borrowing costs, the ability to sanction adversaries by cutting off dollar access — and specific costs for countries that must hold large dollar reserves while absorbing the monetary policy decisions of the Federal Reserve regardless of their own economic conditions.

What Dollar Dominance Actually Means

Around 60% of global foreign exchange reserves are held in dollars. Approximately 50% of global trade invoicing uses dollars. The dollar is one side of 88% of all foreign exchange transactions. The US government can borrow at lower rates than any other sovereign because dollar-denominated assets are in universal demand. When the Federal Reserve raises rates to control US inflation, it tightens monetary conditions globally — capital flows to dollar assets, emerging market currencies depreciate, dollar-denominated debt becomes more expensive to service. This is not a hypothetical; it happens with every Fed tightening cycle.

The sanctions mechanism is perhaps the most consequential aspect of dollar dominance. Cutting a country or entity off from the dollar-based correspondent banking system — the SWIFT system and the correspondent banking relationships that underlie it — effectively excludes it from a significant portion of global trade finance. Russia's exclusion following the 2022 invasion of Ukraine, and Iran's long-standing exclusion, demonstrate both the power of the instrument and its limits: it accelerates the search for alternatives.

The Alternatives and Their Limitations

China has pushed yuan internationalisation through its Cross-Border Interbank Payment System (CIPS), bilateral swap agreements with 40+ central banks, and the requirement that some Belt and Road lending be denominated in yuan. The results are modest: the yuan accounts for roughly 2.5% of global foreign exchange reserves and about 3% of SWIFT transaction values. The fundamental problem is that yuan internationalisation requires capital account liberalisation — the free movement of capital in and out of China — which conflicts with the financial stability and political control priorities of the Chinese Communist Party. A currency that cannot be freely converted cannot be a true reserve currency.

BRICS payment systems, bilateral agreements to trade in local currencies (India-UAE, Russia-India), and the proposed "BRICS currency" are all responses to the same political frustration with dollar dominance. None are close to providing the depth of liquidity, legal infrastructure, and institutional trustworthiness that would be required for widespread adoption as a reserve currency. The euro is the only currency that has historically made a credible bid for reserve status, and it accounts for roughly 20% of reserves — significant, but not dominant.

The Honest Assessment

Dollar dominance will erode gradually rather than collapse suddenly. The structural forces driving the erosion are real: weaponisation of the dollar through sanctions accelerates diversification; China's economic size creates political pressure for yuan use; digital currencies (including a potential digital dollar, digital yuan, and private stablecoins) may shift settlement infrastructure over the long term. None of these forces are likely to produce a non-dollar reserve system within a decade. The dollar has structural advantages — liquid capital markets, rule of law, deep institutional infrastructure — that take generations to build, and no competitor has them in comparable depth.