Countries in the Five-Tier Global USD Infrastructure
Posted on | September 30, 2026 | No Comments
Citation APA (7th Edition)
Pennings, A.J. (2026, Sep 30) Countries in The Five-Tier Global USD Infrastructure. apennings.com https://apennings.com/artificial-intelligence/countries-in-the-five-tier-global-usd-infrastructure/
Introduction
Here I further develop the tiers of countries in the global USD infrastructure as an analytical framework rather than an official classification. The countries below are illustrative examples selected to fit the characteristics in my chart, not yet a formal IMF or World Bank taxonomy. The World Bank’s current income groups and the IMF’s emerging/developing-economy framework provide useful reference points, but neither defines these five tiers or how they fit as an issuer, intermediator, surplus recycler, constrained borrower, or excluded user of USD.
The Five-Tier USD Economy
Together, they define the USD infrastructure as both a global liquidity system and a hierarchical access system. The key point of the chart is liquidity access, not income.The benefits, however, are distributed unevenly.
At Tier 1, the United States sits at the center. It has direct access to Federal Reserve liquidity, Treasury markets, domestic dollar funding, and the institutions that regulate the core system.
At Tier 2, global financial hubs have deep access to dollar and Eurodollar markets. Their banks and financial institutions can “intermediate” international capital and trade, although they remain exposed to changes in global dollar funding conditions.
At Tier 3, major surplus exporters such as China and the Gulf states can accumulate reserves, purchase Treasuries, and finance substantial international activity. They have enough financial capacity to pursue monetary diversification without giving up the benefits of dollar liquidity.
At Tier 4, emerging economies receive significant benefits from dollars through trade, investment, remittances, mobile finance, and foreign borrowing, but are more vulnerable to capital reversals, currency depreciation, sudden stops, and higher external financing costs.
At Tier 5, the paradox becomes most severe. The countries that may need international liquidity most desperately are often those perceived as too risky to receive it cheaply. Weak institutions, shallow financial markets, limited collateral, political instability, and correspondent-bank de-risking are all situations that can prevent abundant global dollar liquidity from reaching the places where it might have the greatest developmental impact.
Revised text with countries added
At Tier 1, the United States sits at the center. New York is the top Tier 1 city. It has direct access to Federal Reserve liquidity, Treasury markets, domestic dollar funding, and the institutions that regulate the core system. That monetary privilege now sits beside the world’s densest cluster of financial, cloud, and AI infrastructure.
At Tier 2, global financial hubs intermediate dollar and Eurodollar markets—the United Kingdom, Hong Kong, Singapore, Switzerland, and Japan, with Dubai as the Gulf node. Their banks can move international capital and trade, and their centers supply FX, data, and asset management. These economies remain exposed to changes in international dollar-funding conditions. They still fund in dollars they do not issue, so a tightening of global dollar conditions hits them as a price and quantity shock. The current Global Financial Centres Index, for example, continues to identify London, Singapore, Zurich, Tokyo and Dubai among the major global financial centers.
At Tier 3, major surplus exporters accumulate reserves, buy Treasuries, and finance large overseas activity—China, Saudi Arabia, Kuwait, Norway, and the UAE as a sovereign recycler. Their accumulated foreign-exchange resources give them greater capacity to absorb external shocks and pursue some degree of monetary and financial diversification while retaining access to the liquidity advantages of the dollar system. This gives them room to absorb shocks and to experiment with diversification without leaving the dollar’s liquidity.
Hub and surplus can coexist in one state; the tier names the dominant buffer, not the only role. The IMF’s international-reserves data infrastructure specifically tracks the foreign-currency assets and liquidity positions of monetary authorities, while its 2026 External Sector Report documents substantial reserve holdings among major surplus and advanced economies.
At Tier 4, large emerging economies—India, Brazil, Mexico, Indonesia, Türkiye—get dollars through trade, investment, remittances, mobile finance, and foreign borrowing, but live closer to reversal: depreciation, sudden stops, and dearer external finance than the hubs in Tier 2. These are large emerging and developing economies with substantial participation in international markets but greater sensitivity to exchange-rate and global financing conditions than the financial centers at Tier 2.
At Tier 5 the paradox is sharpest. Economies that most need external liquidity are often priced as too risky to receive it cheaply. Fragile and conflict-affected cases include Afghanistan, Chad, the Democratic Republic of the Congo, Ethiopia, Haiti, Malawi, Sierra Leone, and Yemen. A second cluster includes Kiribati, Solomon Islands, Tuvalu, Vanuatu, Timor-Leste. These are middle income island countries that experience the same dollar rationing through smallness, distance, and thin correspondent networks rather than only through war. Weak market depth, limited collateral, de-risking by correspondent banks, and thin digital rails can keep abundant global dollar liquidity from the places where its developmental return would be highest.
Afghanistan, Chad, Democratic Republic of the Congo, Ethiopia, Haiti, Malawi, Sierra Leone, Yemen, as well as island countries like Kiribati, Solomon Islands, Tuvalu, Vanuatu, Timor-Leste are middle income countries that may have the greatest need for international liquidity but frequently have the least-developed domestic financial and digital infrastructure through which that liquidity can be efficiently transmitted. Weak institutional and financial capacity, limited market depth, inadequate digital infrastructure and restricted international financial connectivity can all raise the cost of accessing external capital.
Thus the dollar is at once a global liquidity system and a hierarchical access system.
Notes
[] At Tier 5, the paradox becomes most severe (Afghanistan, Yemen, DRC, Chad, Haiti, Ethiopia are access + fragility cases (conflict, sanctions, correspondent de-risking)
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Not to be considered financial advice. AI is often used, and results are thoroughly interrogated. Links are used for some citations.
Anthony J. Pennings, PhD is a Professor at the Department of Technology and Society, State University of New York, Korea and a Research Professor for Stony Brook University. He teaches AI and broadband policy. From 2002-2012 he taught digital economics and information systems management at New York University. He also taught in the Digital Media MBA at St. Edwards University in Austin, Texas, where he lives when not in Korea.
Tags: USD infrastructure > USD-liquidity tiers
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Professor (full) at State University of New York (SUNY) Korea since 2016. Research Professor for Stony Brook University. Moved to Austin, Texas in August 2012 to join the Digital Media Management program at St. Edwards University. Spent the previous decade on the faculty at New York University teaching and researching information systems, digital economics, and global political economy
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