flowchart LR GS[Classical Gold<br/>Standard<br/>1816-1914] --> IW[Inter-war<br/>Period<br/>1914-1944] IW --> BW[Bretton Woods<br/>System<br/>1944-1971] BW --> SM[Smithsonian<br/>Agreement<br/>1971] SM --> FL[Floating<br/>Rates<br/>1973 onwards] style GS fill:#FFF8E1,stroke:#F9A825 style BW fill:#E3F2FD,stroke:#1565C0 style FL fill:#E8F5E9,stroke:#2E7D32
33 International Monetary System
33.1 Meaning
The International Monetary System (IMS) is the set of internationally agreed rules, conventions, institutions and supporting mechanisms that govern cross-border payments, exchange-rate arrangements, and the management of international liquidity (vij2021?; apte2020?; cherunilam2020?).
Three working questions define the system at any moment:
- How are exchange rates determined? Fixed, floating or hybrid?
- What serves as international reserves? Gold, USD, SDR, multiple reserve currencies?
- Who provides international liquidity in a crisis? IMF, central banks, swap lines?
TipThree Functions of the International Monetary System
| Function | Working content |
|---|---|
| Means of payment | A widely-accepted medium for cross-border settlement |
| Adjustment mechanism | Tools to correct balance-of-payments disequilibrium |
| International liquidity | Adequate stock of reserve assets to support trade and finance |
33.2 Evolution of the International Monetary System
The IMS has gone through five distinct phases since 1816 (salvatore2019?; krugman2018?).
33.2.1 Classical Gold Standard (1816–1914)
Each currency was defined in terms of a fixed weight of gold; central banks stood ready to convert their currency into gold at the official rate. Exchange rates between two currencies were therefore fixed by their gold content. The system was self-adjusting through David Hume’s price-specie flow mechanism (1752): a country with a BoP deficit lost gold, the money supply contracted, prices fell, exports became competitive, the deficit corrected itself.
33.2.2 Inter-war Period (1914–1944)
World War I forced governments off gold to finance the war. Attempts to restore the gold standard in the 1920s collapsed in the Great Depression. The 1930s saw competitive devaluations, exchange controls and protectionism — the textbook beggar-thy-neighbour policies that the Bretton Woods architects later sought to prevent.
33.2.3 Bretton Woods System (1944–1971)
In July 1944, delegates from 44 nations met at Bretton Woods, New Hampshire, and designed a gold-exchange standard anchored on the US dollar:
- The US dollar was convertible into gold at USD 35 per ounce.
- Other currencies were pegged to the dollar within a ±1 per cent band.
- Devaluations beyond the band required IMF approval.
- The International Monetary Fund (IMF) provided short-term BoP support.
- The International Bank for Reconstruction and Development (IBRD) — later the World Bank — financed long-term reconstruction.
The system imploded in 1971. The US ran persistent BoP deficits (in part to finance Vietnam War and Great Society); foreign holdings of dollars exceeded US gold reserves several times over (the Triffin dilemma); on 15 August 1971, President Richard Nixon “closed the gold window” — suspending USD-gold convertibility. The Smithsonian Agreement of December 1971 attempted to restore fixed rates with a wider band (±2.25 per cent) but failed within fifteen months.
33.2.4 Floating Exchange-Rate System (1973 onward)
By March 1973 the major currencies were floating against the dollar. The Jamaica Accord (1976) — formalised by the Second Amendment to the IMF Articles (1978) — legalised the floating regime: each country was free to choose its own exchange-rate arrangement. The system has now operated for half a century and is the de facto international monetary order.
33.2.5 European Monetary Integration
A regional thread runs in parallel: the European Monetary System (EMS, 1979) tied European currencies in an Exchange Rate Mechanism (ERM); the Maastricht Treaty (1992) committed members to a single currency; the euro was launched in non-cash form in 1999 and as physical currency in 2002. The euro is now the second most-held reserve currency after the US dollar.
33.3 Exchange-Rate Regimes — A Spectrum
Modern exchange-rate arrangements form a spectrum from hard pegs to free floats (salvatore2019?; vij2021?).
TipThe Spectrum of Exchange-Rate Regimes
| Regime | Working content | Example |
|---|---|---|
| Dollarisation / Currency union | Country adopts another country’s currency or shares one | Ecuador (USD), Eurozone |
| Currency board | Domestic currency 100 % backed by foreign reserves | Hong Kong (HKD/USD board) |
| Conventional fixed peg | Pegged to a single currency or basket within a narrow band | Saudi Arabia (SAR/USD) |
| Pegged with bands / horizontal bands | Fixed central rate; permitted deviation within bands | Past ERM-II countries |
| Crawling peg | Peg adjusted at a pre-announced rate | Past Latin American crawling pegs |
| Crawling band | Pegged with bands that crawl over time | Hungary (early 2000s) |
| Managed float / Dirty float | Floating rate with central-bank intervention | India, China, Singapore |
| Free float | Rate determined entirely by market forces | USD, EUR, JPY, GBP |
The impossible trinity (or trilemma) — articulated by Robert Mundell — states that a country can simultaneously achieve only two of the following three: (i) fixed exchange rate, (ii) free capital movement, (iii) independent monetary policy. Choosing all three is impossible.
flowchart TB T[The Impossible<br/>Trinity] --> FX[Fixed Exchange<br/>Rate] T --> FC[Free Capital<br/>Mobility] T --> IM[Independent<br/>Monetary Policy] N[Pick any<br/>two] N -.-> FX N -.-> FC N -.-> IM style T fill:#E8F0FE,stroke:#1A73E8 style N fill:#E8F5E9,stroke:#2E7D32
33.4 Special Drawing Rights (SDR)
The Special Drawing Right (SDR) was created by the IMF in 1969 as an international reserve asset to supplement member countries’ official reserves. The SDR is not a currency; it is a potential claim on the freely usable currencies of IMF members.
TipSDR — Key Features
| Feature | Content |
|---|---|
| Year introduced | 1969 |
| Issuer | IMF |
| Nature | International reserve asset; not a currency |
| Valuation basis | A basket of major currencies |
| Current basket (since 2016) | USD, EUR, RMB, JPY, GBP |
| Use | Allocations to member countries; transactions among IMF members; unit of account |
| Major allocation events | 2009 (post-GFC), 2021 (post-COVID, USD 650 bn) |
The Chinese renminbi was added to the basket in October 2016 — recognising China’s rising trade weight.
33.5 Currency Convertibility
Convertibility is the ability to exchange domestic currency for foreign currency — and vice versa — freely, without restriction. The IMF distinguishes between two strands (cherunilam2020?):
TipTwo Kinds of Convertibility
| Kind | Coverage |
|---|---|
| Current Account Convertibility (Article VIII) | Free conversion for current-account transactions — exports, imports, services, remittances, dividend |
| Capital Account Convertibility (CAC) | Free conversion for capital-account transactions — investments, loans, asset purchases |
India achieved full current-account convertibility in 1994. Capital-account convertibility remains partial — controlled and gradual. The Tarapore Committee (1997, second report 2006) outlined a phased roadmap to fuller CAC subject to pre-conditions on fiscal deficit, inflation, banking-system health and external strength.
33.6 India’s Exchange-Rate Regime — Evolution
India’s regime has shifted significantly since independence (vij2021?).
TipIndia’s Exchange-Rate Regime Over Time
| Period | Regime |
|---|---|
| 1947–71 | Par-value system under Bretton Woods; pegged to GBP, then USD |
| 1975–92 | Pegged to a basket of currencies of major trading partners |
| 1992–93 | LERMS — Liberalised Exchange Rate Management System; partial dual-rate market |
| 1993 | Unified market exchange rate; managed float |
| 1994 | Current-account convertibility under IMF Article VIII |
| 1997, 2006 | Tarapore Committees outlined phased capital-account convertibility |
| Today | Managed-float with RBI intervention; FX reserves used to stabilise |
33.7 Reserve Currency System
A reserve currency is a foreign currency held in significant quantities by central banks for international transactions, intervention and reserve. The current order is multi-polar.
TipMajor Reserve Currencies (Approximate Shares of Allocated Reserves)
| Currency | Approximate share | Note |
|---|---|---|
| US Dollar (USD) | ≈ 58 % | Dominant since Bretton Woods |
| Euro (EUR) | ≈ 20 % | Second largest |
| Japanese Yen (JPY) | ≈ 5 % | Long-standing reserve currency |
| Pound Sterling (GBP) | ≈ 5 % | Historic reserve currency |
| Chinese Renminbi (CNY) | ≈ 2–3 % | In SDR basket since 2016 |
| Other (CHF, CAD, AUD) | Remainder | Niche reserve currencies |
(Shares are illustrative; IMF COFER data fluctuates over time.)
33.8 Triffin Dilemma
Robert Triffin (1960) pointed out a deep contradiction in any system in which a single national currency serves as the world’s reserve currency: the issuing country must run persistent BoP deficits to supply the world with reserves, but those deficits eventually undermine confidence in the very currency that backs the system. The Triffin dilemma explains the inevitable tension at the heart of the dollar-based system — and the case for a more diversified reserve system, perhaps centred on the SDR.
33.9 Exam-Pattern MCQs
Q 01
Which of the following is not a recognised function of the International Monetary System?
View solution
Correct Option: D
Personal-tax rates are sovereign domestic decisions, not the remit of the IMS.
Q 02
Match each phase of the IMS with its key feature:
| Phase | Key feature | ||
| (i) | Classical Gold Standard | (a) | USD pegged to gold at $35 per ounce; other currencies to USD |
| (ii) | Bretton Woods | (b) | Currencies defined in fixed weights of gold |
| (iii) | Smithsonian | (c) | Major currencies float against the USD |
| (iv) | Post-1973 | (d) | Wider band, attempted restoration of fixed rates after Nixon shock |
View solution
Correct Option: A
Q 03
The Triffin dilemma refers to:
View solution
Correct Option: B
Triffin (1960) identified the inherent contradiction of the dollar-based reserve system.
Q 04
Match each exchange-rate regime with its example:
| Regime | Example | ||
| (i) | Currency board | (a) | India |
| (ii) | Managed float | (b) | Hong Kong (HKD/USD) |
| (iii) | Free float | (c) | Eurozone |
| (iv) | Currency union | (d) | USD, JPY, GBP |
View solution
Correct Option: A
Q 05
The impossible trinity (Mundellian trilemma) states that a country can simultaneously achieve only two of the following three. Identify the three:
View solution
Correct Option: A
Fixed FX rate + Free capital mobility + Independent monetary policy → choose any two.
Q 06
Which of the following is not a currency in the current SDR basket?
View solution
Correct Option: C
The current SDR basket is USD, EUR, RMB, JPY, GBP. The Indian rupee is not in the basket.
Q 07
Arrange the following events in the evolution of the IMS in chronological order: (i) Suspension of USD-gold convertibility (Nixon shock) (ii) Bretton Woods Conference (iii) Launch of the euro as physical currency (iv) Creation of SDR by IMF
View solution
Correct Option: A
Bretton Woods (1944) → SDR created (1969) → Nixon shock (1971) → Euro physical currency (2002).
Q 08
Match each Indian milestone with its content:
| Milestone | Content | ||
| (i) | LERMS (1992–93) | (a) | Phased roadmap to capital-account convertibility |
| (ii) | Article VIII status (1994) | (b) | Liberalised Exchange Rate Management System |
| (iii) | Tarapore Committee | (c) | Full current-account convertibility |
| (iv) | Today's regime | (d) | Managed float with RBI intervention |
View solution
Correct Option: A
ImportantQuick recall
- IMS = rules and institutions for cross-border payments, exchange-rate arrangements, international liquidity.
- Three functions: means of payment, adjustment mechanism, international liquidity.
- Five phases: Gold Standard (1816-1914) → Inter-war → Bretton Woods (1944-71) → Smithsonian (1971) → Floating (1973-).
- Bretton Woods: USD-gold at $35/oz, other currencies pegged to USD ±1 %, IMF + IBRD created.
- Nixon shock 15 Aug 1971 — closed the gold window. Smithsonian (Dec 1971) failed; floating from March 1973; Jamaica Accord 1976 legalised floats.
- Euro: created via Maastricht 1992, electronic 1999, physical 2002.
- Exchange-rate spectrum: dollarisation, currency board, fixed peg, crawling peg/band, managed float, free float.
- Mundell trilemma / impossible trinity: pick two of {fixed FX, free capital mobility, independent monetary policy}.
- SDR (1969) by IMF; basket since 2016: USD, EUR, RMB, JPY, GBP.
- Triffin dilemma: contradiction at the heart of single-national-currency reserve system.
- India: LERMS 1992–93 → unified rate 1993 → Article VIII 1994 (current-account convertibility) → Tarapore Committee roadmap to CAC.
- Reserve currencies: USD ≈ 58 %, EUR ≈ 20 %, JPY ≈ 5 %, GBP ≈ 5 %, CNY rising.
- Convertibility: Current account (full in India) vs Capital account (partial, gradual).