Why the Dollar System Still Matters
Synopsis
Headlines often treat one reserve share or payment announcement as proof the dollar is finished. This opening TGGR essay argues that the dollar is not one thing: it does six different jobs in the world economy (invoicing, settlement, funding, reserves, exchange-rate anchor, and safe-haven/collateral). A rival can look strong in one job and still fail others. Using IMF COFER, BIS FX turnover, and SWIFT payments — and separating FX valuation from real reallocation — it shows why a single “dollar share” misleads. The bounded reading: pressure on the system is real, but no full substitute yet clears liquidity, convertibility, legal enforceability, and scale across those jobs. The likely path is slow loss of exclusivity at the edges, not sudden replacement. Later posts take history, plumbing, and rivals one piece at a time.
Every morning, headlines warn that the dollar system is ending. The same morning, a treasurer still prices an invoice in dollars, hedges that invoice in dollars, and posts dollar collateral when markets turn rough. Why does the news cycle and the balance sheet disagree?
Series note: This is the opening essay in the TGGR Research series on The Great Global Re-balancing. It sets a practical benchmark — what the dollar system does — so later posts can test history, plumbing, rivals, and alternatives one piece at a time.
Observed Fact: Public debate often treats one number — a reserve share, a sanctions episode, or a bilateral payment announcement — as proof that the whole system is unravelling. Interpretation: That move is premature unless we first say what the dollar system does. This post sets that benchmark.
The short thesis: the dollar is not one thing. It performs six different jobs in the world economy. A rival can gain ground in one and remain marginal in another. So the useful question is not whether “de-dollarisation” is happening, but where, in which function, and at what scale.
Six jobs, not one “dominance”
An international currency is a currency used by people who are not domestic residents of the issuing country. In practice, international currency use can be separated into six overlapping functions. They come in private / official pairs.
1. Invoicing / unit of account — the currency in which the contract is written. Desk example: A textile exporter in Dhaka sells to a buyer in São Paulo. Neither side is American, yet both may still prefer a dollar price because it is easy to check and cheap to hedge.
2. Settlement / vehicle currency — the currency used to clear payment, including between two other currencies. Desk example: A palm-oil exporter in Jakarta paid by a buyer in Nairobi may see the payment routed through dollars, because the direct rupiah–shilling market is thin.
3. Funding / borrowing currency — the currency in which firms and governments choose to issue debt. Desk example: A Korean manufacturer issues a five-year dollar bond to reach a deeper investor pool — and accepts a currency mismatch if revenues are mostly in won.
4. Investment / reserve asset — the currency in which savers and central banks hold liquid wealth. Desk example: A reserve manager cares less about yield than about whether the market will still be open on a bad day.
5. Exchange-rate anchor — the currency many governments manage against. Desk example: A firm in a dollar-anchored economy can mistake a long-stable peg for a guarantee. Pegs can hold for years and break in an afternoon.
6. Safe-haven / collateral currency — the currency capital flees to in stress, and the assets most widely accepted as collateral. Desk example: In a freeze, dollar liquidity can become the lifeline — or the squeeze — depending on whether the treasury is long or short dollars.
Interpretation: These jobs are separable. The euro can be important in European invoicing and still matter less as a global safe haven. The Swiss franc can be a safe haven and still be a small vehicle currency. So “the dollar is losing ground” is not a usable claim until someone names which job.
Four tests (named, not scored)
To do several of these jobs at global scale, a challenger needs more than a press release. For the limited purpose of this opening essay, four practical tests provide a useful starting point:
- Liquidity — deep markets that can absorb large trades without freezing.
- Convertibility — the ability to enter and exit without heavy capital-account friction.
- Legal enforceability — contracts and collateral that hold under predictable law (including in stress).
- Scale — an economy and market big enough to supply safe, liquid assets in volume.
Observed Fact / boundary: This post does not score the euro, renminbi, gold, or stablecoins against those tests. That scorecard belongs to a later Topic Head ( and related work). Naming the tests here only sets the standard.
One number cannot settle the argument
If the six jobs differ, the data series must differ too. Three official series are enough to show the trap.
Small data box — three different jobs
| Series | What it mainly measures | Latest reading used here | Period | |
|---|---|---|---|---|
| IMF COFER | Official FX reserves (stock) | USD 57.13% of FX reserves (EUR 20.03%, CNY 1.99%) | 2026Q1 | |
| BIS Triennial Survey | FX turnover (flow; vehicle use) | Global FX $9.6 trillion/day; USD on one side of 89.2% of trades | April 2025 | |
| SWIFT Global Currency Tracker | Payment messages on SWIFT (value shares) | USD 50.10% global payment value (EUR 21.88%, CNY 3.10%); 58.63% excluding intra-eurozone; trade finance USD 81.16% | June 2026 (July 2026 tracker) |
Sources: IMF Data Brief, 1 Jul 2026 (https://data.imf.org/en/news/imf%20data%20brief%20july%201); BIS, OTC FX turnover in April 2025 (https://www.bis.org/statistics/rpfx25_fx.htm). SWIFT figures from Global Currency Tracker, July 2026 edition (data for June 2026): global payment value USD 50.10%, EUR 21.88%, CNY 3.10%; excluding intra-eurozone payments USD 58.63%, EUR 13.46%; trade finance (MT 400/700) USD 81.16% (https://www.swift.com/products/global-currency-tracker).
Observed Fact: These are not three estimates of the same thing. COFER is a stock of official reserves. The BIS survey is average daily trading. SWIFT is the currency of messages on one major network — and SWIFT itself warns that its tracker is not complete market statistics.
Interpretation: Averaging them, or treating a move in one as proof about the others, is a method error. A fall in a payments share does not automatically mean central banks sold dollars. A rise in a reserve share does not automatically mean the private vehicle role changed.
TGGR Research Rule
A practical reading habit follows from the data box. When someone says “the dollar’s share fell”, ask:
- Which job? Reserves, FX turnover, payments messaging, invoicing, or debt issuance?
- Which population? Central banks, dealers, SWIFT users, or customs invoices?
- Valuation or flow? Did exchange rates move the stock, or did someone actually buy and sell?
If those cannot be answered, the number is not yet sufficient evidence of systemic change. It is a prompt for better measurement. That habit is the main craft this opening post is meant to leave with the reader — more than any single percentage point.
Reserves: valuation can look like “exit”
COFER is the series most often quoted in “de-dollarisation” headlines. It needs one extra filter.
Observed Fact: In 2026Q1, the dollar’s share of foreign-exchange reserves rose to 57.13% from 56.42% in 2025Q4. The IMF notes that mild dollar appreciation against major currencies was a key driver, with exchange-rate valuation effects accounting for around half of the increase in the dollar share that quarter. The euro share was 20.03%; the renminbi 1.99%.
Interpretation: Headline reserve shares move when exchange rates move, even if no reserve manager buys or sells. The useful question is not only “did the share change?” but “how much was valuation, and how much was active reallocation?”
Observed Fact: From 2025Q3, the IMF also changed how COFER is presented so currency shares cover essentially all FX reserves (with some imputation). Readers comparing today’s shares to older “allocated-only” prints should check they are using the revised series.
A second discipline matters just as much: announcement ≠ launch ≠ operating volume. A memorandum of understanding to settle in local currency is a real political signal. It is not yet proof that the six-job loop has broken.
Why the jobs reinforce each other (in plain language)
Cause: Deep markets, a large stock of usable safe assets, and enforceable contracts already exist in dollars.
Action (private): An exporter, importer, or borrower with no loyalty to any flag often still chooses the deep currency because hedging and funding are cheaper there.
Action (official): If a country’s trade and corporate debts are dollar-heavy, its central bank needs dollar liquidity for bad days — so it holds dollar reserves partly as a mechanical hedge, not only as a “vote.”
Effect: More use deepens markets further, which strengthens the original private incentive.
Interpretation: This self-reinforcing pattern is a standard finding in the international-currency literature: vehicle-currency use rests on network effects and market depth, and once private trade and funding run through a currency, official reserve demand tends to follow. Because the loop is fed by many decentralised choices, one government announcement cannot switch it off. The same logic cuts the other way: the system can still lose exclusivity at the edges — corridor by corridor, function by function — without a cinematic “replacement.”
One example: why separating the jobs matters
Return to the treasurer issuing a five-year bond outside the United States.
Interpretation: Dollar markets are deep. Issuing in dollars can mean a lower coupon than a thin local market can offer, and dollar paper is easier for global funds to hold and reuse as collateral. That saving is not free. If revenues arrive in local currency, the firm carries a structural mismatch. When the local currency weakens, the real burden of dollar debt rises — often in the same week refinancing gets harder.
So the funding job can be both a privilege and a risk channel at once. That is why “dollar dominance” is not only a reserve-share story — and why one job’s strength does not settle the argument for the other five. Later posts on offshore funding and crisis liquidity will go deeper; here the point is only structural.
A light map, not a grand theory
This series uses a simple checklist called the Adaptive Polycentric Framework (APF): monetary, financial, institutional, physical infrastructure, energy, strategic resources, and geopolitics. Middle powers often act as connectors across several of those layers.
Interpretation: APF is a checklist, not a law of history. This post stays on the monetary and financial layers. Energy pricing, corridors, institutions, and full system feedback are later Topics — not smuggled in as slogans here.
Working hypothesis — and what would prove it wrong
Working hypothesis: Dollar exclusivity may keep eroding function-by-function without wholesale replacement — especially where official reserve managers diversify — while private vehicle and funding depth stay dollar-centred unless alternatives show sustained operating volume.
Evidence that would challenge this view: A large, persistent drop in FX-adjusted reserve shares together with clear, multi-year declines in BIS FX turnover, SWIFT payment-value shares, and funding-depth indicators would suggest erosion had moved beyond the reserve silo.
This is a labelled working hypothesis for the series, not a prediction. The useful public question is not “Is the dollar finished?” It is “Which job is changing, for whom, and by how much?”
References
- International Monetary Fund. “IMF Data Brief: Currency Composition of Official Foreign Exchange Reserves,” 1 July 2026 (data for 2026Q1). https://data.imf.org/en/news/imf%20data%20brief%20july%201
- Bank for International Settlements. “OTC foreign exchange turnover in April 2025,” Triennial Central Bank Survey, 30 September 2025. https://www.bis.org/statistics/rpfx25_fx.htm
- SWIFT. Global Currency Tracker, July 2026 (statistics for June 2026). https://www.swift.com/products/global-currency-tracker
- International Monetary Fund. “Improving the Analytical Usefulness of the IMF’s COFER Data,” Technical Notes and Manuals TNM/2025/14, November 2025. https://www.imf.org/en/publications/tnm/issues/2025/11/26/improving-the-analytical-usefulness-of-the-imfs-cofer-data-571706
- Paul Krugman. “Vehicle Currencies and the Structure of International Exchange,” Journal of Money, Credit and Banking 12, no. 3 (1980): 513–526. https://doi.org/10.2307/1991721
- Gita Gopinath and Jeremy C. Stein. “Banking, Trade, and the Making of a Dominant Currency,” Quarterly Journal of Economics 136, no. 2 (2021): 783–830. https://doi.org/10.1093/qje/qjaa036
What comes next in this series
Later posts take the pieces this opening leaves alone: how reserve systems transition, Triffin and dollar supply, why dominance survived the end of gold convertibility, energy recycling, payments plumbing, offshore funding, fiscal and Treasury depth, and a proper rival scorecard. Settlement corridors and operating volumes belong in the settlement Topics — with data, not announcements alone.
Disclaimer
The core concepts, intellectual frameworks, and primary conclusions presented in this post—whether exploring macroeconomics, technology, governance, or philosophical inquiry—are the result of extensive synthesis, wide-ranging study, and the author’s personal observations of global developments and literature. In alignment with modern digital workflows, advanced generative AI were utilized as a collaborative tool to assist in refining prose, structuring editorial layouts, and drafting supporting conceptual imagery. All final content is personally curated, reviewed, and approved by the author.
