Volume I · Gold · Money Research

08 — Why Dollar Use Survived Official Gold Conversion

The short answer

The dollar became a major international currency through several reinforcing conditions. First, at the moment the post-war system was designed (1944) the United States held a large share of official gold and had a strong post-war economic position, so the dollar was a particularly important currency for the post-war arrangement. Second, as dollar holdings and trading expanded, the network effect took over: a currency is useful in proportion to how many others use it, and the euro, yuan and gold currently have different roles and do not match the dollar's depth, liquidity and legal infrastructure. Third, and most fundamentally, a fiat currency can do things gold cannot: it can expand with the economy, be created in a crisis, earn interest, and support electronic lending, clearing and settlement, with associated costs. Those features help explain the transition, alongside geopolitics and changes in international monetary rules.

Step one: the dollar becomes gold's proxy (1944–1971)

Bretton Woods centered official gold conversion on the dollar and established adjustable parities for participating currencies. Dollar assets such as US Treasury bills could pay interest, while gold did not; some foreign monetary authorities also had an official dollar-to-gold conversion right. The former precise comparison of 1971 foreign official dollar claims with US gold stock is withheld until a matched primary series identifies the holders, gold stock boundary and valuation date. When the US suspended that official conversion in 1971, foreign monetary authorities could continue to hold dollars for reserve, payment, trade and financial-market uses. IMF, *Financial Organization and Operations*, sixth ed., ch. III p. 91; IMF history, ch. 25.

Step two: oil and the petrodollar (1974 onward)

The dollar was already widely used to quote oil before the June 1974 US–Saudi Joint Commission on Economic Cooperation. Federal Reserve History, “Oil Shock of 1973–74”. A US government audit describes the commission as promoting economic cooperation, Saudi development and petrodollar recycling; it does not establish an exclusive oil-pricing or dollar-for-oil redemption clause. A 1975 Federal Reserve staff memo says oil prices were denominated in dollars or sterling, with the dollar the principal transaction currency. Dollar invoicing and investment of some exporter surpluses supported dollar use, but an importer could buy dollars on an exchange market, and neither practice guaranteed permanent demand for dollar balances. The dollar's wider role also depends on trade, banking and deep financial markets, not oil alone. GAO, 1979, pp. 1–2; Federal Reserve staff memorandum, 1975, pp. 1–2.

Step three: the infrastructure of dollar dominance

The Treasury market. US government debt has a deep outstanding stock and active secondary market, which supports dollar reserve use. Large transactions are possible, though their market effect depends on conditions and instruments. A “largest, most liquid market in the world” ranking requires a dated, comparable market-depth measure and is withheld here. An above-ground-gold-stock valuation or traded-float comparison likewise needs a stock definition, price date and matched liquidity data; outright physical gold pays no interest and requires custody.

Eurodollars and offshore banking. From the 1960s, banks outside the US took dollar deposits and made dollar loans, extending dollar credit across borders. The relative size of this system, and dollar shares of international lending, bond issuance and trade invoicing, need datasets with dates and matching denominators; they are not ranked here.

Clearing and legal reach. Dollar payments clear through US banks and the SWIFT/CHIPS systems, making US intermediaries and applicable law relevant to many transactions. This is a strength (everyone is on one system) and, since 2022, a visible weakness (see below).

Stability and rule of law. Contract enforcement, policy credibility and market depth support reserve use, but trust and inflation outcomes vary over time.

Step four: why gold could not do the job

Gold convertibility constrained a central bank's ability to expand its own liabilities without risking redemption at the promised parity. It did not mean that all money was metal or that banks could not create redeemable deposits through lending. The scope for emergency lending, fiscal policy and changes to parity depended on each historical system's rules and politics; neither the classical standard, the interwar restoration nor Bretton Woods was a single universal design. Deflation and debt stress were important costs in some episodes, but cannot be attributed to metal supply alone. How deposits, reserves, bonds and asset purchases differ gives the modern balance-sheet contrast; see also Bank of England, “Money creation in the modern economy,” pp. 16–20.

Gold also does not earn a return. A central bank holding $100 billion in Treasuries earns interest; one holding $100 billion in gold pays storage and insurance. Gold is expensive to verify and transport at scale, cannot be used to settle a payment in milliseconds, and its price in terms of goods is volatile over months even if stable over centuries. And, decisively, states also value policy flexibility, but their motives differ by period and institution.

Finally, gold is not the dominant contemporary unit of account: most invoices, wages, contracts and debts are written in national currencies, with the dollar especially important across borders. That is a statement about prevalent use, not a claim that no one can state a price in gold or that official gold reserves have no monetary role.

What replaced gold's function, precisely

Under the classical gold standard, participating currencies had fixed gold definitions, and gold served as an official reserve and settlement asset. Since the end of dollar–gold conversion, the dollar has remained central to reserve portfolios, trade invoicing, banking and cross-border payments, while gold has continued as an official reserve asset. The IMF's 1978 reform removed gold as the common denominator of the international par-value system; it did not make every later national currency identical. Zimbabwe's 2024 ZiG, for example, was introduced with a stated reserve basket including gold, while its exchange-rate arrangement is classified by the IMF as de jure floating and de facto other managed. Reserve backing, fixed-weight gold redemption and the use of gold as an official asset are distinct claims.

Is the dollar's position weakening?

The answer depends on the measure. IMF COFER puts the dollar at 57.13% of foreign-exchange reserves in 2026 Q1. COFER excludes monetary gold, SDRs and IMF reserve positions; since its 2025 Q3 methodological revision it no longer reports the old “allocated” subset, and the historical series was revised. IMF COFER dataset and methodology; IMF 2026 Q1 data brief. The ECB's separate, broader measure puts gold at 27% of official reserves including gold at end-2025, above the euro (15%) and US Treasuries (22%) in that same measure. The ECB says gold's higher market price explains most of that increase: at the end-2023 gold price, gold and the euro would each be about 16%, and Treasuries 26%. Gold cannot receive a “share” inside COFER's foreign-exchange denominator, so its rise must not be subtracted from the dollar's COFER share. ECB, *The international role of the euro*, June 2026, chart 7.

The 2022 freeze of Russian central-bank assets gave reserve managers another reason to examine custody and sanctions exposure. Some central banks also bought gold, but the precise flows, their funding assets and managers' motives need separately sourced country-level evidence. A higher market-value gold share cannot distinguish purchases from price appreciation; the ECB found price appreciation explained most of the share gain through end-2025. Nor does the IMF's COFER dollar share, which excludes gold, establish a one-for-one shift from dollars into metal. ECB, June 2026, chart 7; IMF COFER.

The dollar remains important in trade invoicing, bank lending, foreign-exchange turnover and bond issuance because those are networked uses with deep markets. A shipment can in principle be invoiced in gold, and a bank can lend under a gold-linked system; neither is a common substitute for the dollar's present market infrastructure. The dollar's international functions and gold's official-reserve role should be assessed with separate measures rather than treated as an all-or-nothing transfer.

Key takeaways

The dollar's international role rests on trade invoicing, liquid Treasury and bank markets, and network effects, not on a promise to redeem dollars for oil or gold. Gold's market-value share of the ECB's broad official-reserves measure exceeded the euro's and Treasuries' at end-2025, largely because gold's price rose. That share cannot be compared directly with the dollar's share of COFER foreign-exchange reserves, which excludes gold. The timing and amount of active reserve purchases require separate flow data; a higher gold share alone does not prove dollar assets were sold. ECB, June 2026, chart 7; IMF COFER.