For the better part of a century, the US dollar has sat atop the global financial system as the undisputed monarch. But ask anyone scanning the headlines in London, Frankfurt, or Paris today, and you will hear a very different story: the king is wounded, challengers are circling, and the long reign of the greenback might finally be entering its twilight. The narrative of "de-dollarization" has become impossible to ignore from the expired petrodollar agreement with Saudi Arabia to the BRICS nations prototyping a gold-backed digital currency, the cracks in dollar hegemony seem to be multiplying by the month. But here is the uncomfortable truth that gets lost in the hype: the USD remains the global king, but its crown is slipping. And for investors and policymakers across the UK and Europe, understanding the gap between the headlines and the hard data is not just academic it is the difference between navigating the next decade with clarity or being blindsided by a slow-motion seismic shift.
Let us start with the cold, hard numbers that define reserve currency status the ultimate measure of global trust. According to the International Monetary Fund's (IMF) COFER data for the third quarter of 2025, the US dollar still accounts for approximately 57% of allocated global foreign exchange reserves. That is a staggering share. To put it in perspective, the euro the world's second-largest reserve currency holds just over 20%, the Japanese yen sits at roughly 5.8%, the British pound at 4.7%, and the Chinese yuan trails at under 2%. The dollar's position is not just dominant; it is more than double the combined share of its next four competitors.
However and this is a critical however that 57% figure masks a steady, grinding decline that central bankers watch with growing alarm. The dollar's share has fallen from approximately 65% a decade ago and 70% in 2000. More strikingly, by the end of 2025, that share had dipped further to 56.77%, marking the lowest level since the IMF began tracking this data. The slide is accelerating. From 2020 to 2026, the dollar's share of global foreign reserves is expected to drop by nearly 14 percentage points, equivalent to central banks collectively offloading roughly $3.2 trillion in dollar-denominated assets. The trend is unmistakable: the dollar is not being dethroned, but it is being diversified away from.
The most symbolic blow to dollar dominance in recent memory has been the quiet expiration of the petrodollar system. In June 2024, the 50-year exclusive agreement between the United States and Saudi Arabia which had required the kingdom to denominate its oil sales exclusively in US dollars and recycle the proceeds into US Treasuries was not renewed. For half a century, this arrangement was the bedrock of dollar hegemony. Oil is the world's most traded commodity, and forcing every barrel to be priced in dollars created artificial, relentless demand for the greenback. With the agreement now expired, Saudi Arabia is free to accept payments in other currencies, including the Chinese yuan a symbolic shift that has resonated across global oil markets.
And the kingdom has not been subtle about it. By September 2025, reports indicated that the share of Saudi Aramco's crude exports to China settled in yuan had surpassed 45%. Meanwhile, China and Saudi Arabia have executed their first crude oil cross-border settlement using the digital yuan, compressing transaction times from the traditional three-to-five days under dollar settlement to under two hours. The infrastructure of the petrodollar is being rewired in real time. That said, let us not get carried away. The sheer inertia of the existing system remains formidable: Saudi Arabia and the UAE together still hold approximately $250 billion in US Treasuries, while Gulf Cooperation Council (GCC) sovereign wealth funds manage more than $6 trillion, much of it still dollar-denominated. Oil may be opening to multi-currency settlement, but the profits are still overwhelmingly recycled into dollar assets. Old habits and deep financial entanglements die hard.
Enter the BRICS bloc, which has become the media's favourite anti-dollar protagonist. The headlines scream of a new gold-backed currency that will shatter US hegemony. The reality, as of 2026, is far more measured but also more dangerous for the dollar in the long run. Russia and China have long been the primary drivers of de-dollarization within the group, but progress has been slower and more fragmented than the hype suggests. Brazil, which holds the rotating presidency of BRICS in 2026, has confirmed that no significant decisions on launching a common currency are imminent. India, perhaps the most pragmatic member of the bloc, has made clear it has no plans to create a single BRICS currency, recognizing the immense logistical and political hurdles involved. What BRICS *has* done is more subtle but potentially more consequential. The bloc has unveiled a working prototype of a gold-backed digital settlement instrument known as the "Unit," developed by the International Research Institute for Advanced Systems (IRIAS).
The Unit is not a currency designed to replace national money; it is a multi-asset settlement framework intended to facilitate trade among member nations without relying on the US dollar or the SWIFT messaging system. India's central bank has gone further, proposing that BRICS nations link their official central bank digital currencies (CBDCs) to simplify cross-border trade and tourism payments a framework that could be tabled at the 2026 BRICS summit later this year. The objective is not to kill the dollar overnight but to build parallel rails so that countries can trade with one another without touching the US financial system. It is a classic hedge, not a revolution. But it is a hedge being built by countries that account for more than 35% of global GDP.
The euro, meanwhile, is quietly staging a comeback that European investors should be paying close attention to. The dollar's decline has been the euro's gain. IMF data shows that the euro's share of global reserves increased from 19.8% to 20.1% in 2025, marking its highest level in years. This is not accidental. The European Central Bank (ECB) is aggressively advancing its payments strategy for 2026, with two flagship projects leading the effort: Pontes, which will deliver central-bank-money settlement for DLT-based wholesale transactions by the end of the third quarter of 2026, and Appia, which will test infrastructure for programmable tokenised assets.
The digital euro is also moving forward, positioned by the ECB as a "public settlement layer to strengthen monetary sovereignty and resilience"—diplomatic language that translates directly to "we want to reduce our dependence on American payment rails". In January 2026, SWIFT itself ran a pilot with Societe Generale and BNP Paribas to settle tokenised bonds using both traditional fiat and a euro stablecoin, demonstrating that European financial infrastructure is becoming more technologically competitive with US systems. For British and European readers, the implication is clear: the euro is not just a passive beneficiary of dollar decline but an active competitor building next-generation payment infrastructure.
And then there is the yuan. China's currency remains the most overhyped and under-delivered challenger to the dollar, but the gap between perception and reality is closing faster than many in the West realise. SWIFT data for March 2026 shows the yuan's share of global payments at 3.1%, ranking it fifth globally a significant increase from 2.73% at the end of 2025. That number looks tiny next to the dollar's 50% share of global payments. But here is where the data misleads. SWIFT primarily tracks traditional offshore payment channels, and a substantial volume of China's cross-border transactions bypass SWIFT entirely, flowing instead through its own Cross-Border Interbank Payment System (CIPS). In March 2026, CIPS daily transaction volume reached 920.5 billion yuan, with 35,740 transactions the highest in 12 months. More tellingly, by March 2026, the yuan's share of China's total cross-border settlements covering trade, services, and financial transactions—reached approximately 53%, up from just 13% in 2010. In other words, China has already de-dollarised much of its own international trade flow. The rest of the world is catching on. Pan-African lender Ecobank is in advanced talks with the Bank of China to set up a direct yuan settlement system for Africa trade by the end of 2026, eliminating the need for the dollar as an intermediary. The yuan is not yet a genuine reserve currency its share remains too small but it is becoming a genuine trade settlement currency, which is the first step toward reserve status.
What UK and EU investors need to understand above all is the long-term geopolitical angle driving all of these shifts. De-dollarization is not primarily an economic phenomenon; it is a political and geopolitical response to the weaponisation of the dollar. When the United States froze Russia's central bank assets in 2022, it sent a message to every other nation: your dollar reserves are not safe if you fall out of Washington's favour. That lesson has not been lost on Beijing, New Delhi, Riyadh, or Brasilia.
A 2025 survey by the World Gold Council found that 73% of central bank respondents expect US dollar holdings to decline moderately or significantly within global reserves over the next five years. Gold's share of global foreign reserves has already risen from around 13% in 2017 to roughly 30% as of late 2025, as central banks diversify out of dollar assets and into the ultimate neutral store of value. The dollar's own performance has reinforced this flight. The US dollar posted its worst annual performance since 2017 in 2025, declining nearly 10% against a basket of major currencies. The Dollar Index (DXY) fell 9.4% in 2025, touching a four-year low in early 2026 before rebounding amid the US-Iran conflict. Tariff wars and policy uncertainty under the Trump administration have accelerated the search for alternatives, even as the dollar's safe-haven status provides occasional relief.
So where does this leave us? The dollar is still the global king, but it is a king presiding over a shrinking empire. The infrastructure of dollar dominance petrodollar recycling, SWIFT messaging, Treasury market depth remains the deepest and most liquid the world has ever seen. But the moats are being filled in, one project at a time. The BRICS "Unit" may never launch. The yuan may never become a true reserve currency. The euro may struggle to consolidate its gains. But the trend towards a more multipolar monetary system is now baked into the long-term geopolitical reality. For investors and businesses in the UK and Europe, the implications are straightforward: expect a weaker, more volatile dollar over the next five to ten years; expect central banks to continue diversifying into gold and other currencies; and expect the global payments infrastructure to become more fragmented, with parallel systems emerging alongside SWIFT. The king is not dead. But for the first time in half a century, his successors no longer look like pretenders.
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