International Finance & Exchange Rates — Quick Review

Overview: why exchange rates matter

  • International business adds complexity due to currency fluctuations and policy actions by governments.

  • Governments can influence exchange rates and financial conditions; policy shifts can alter trade dynamics.

Gold Standard, Bretton Woods, and fiat currencies

  • Gold standard: currency value tied to gold; limited inflation but inflexibility during shocks. Allegory: moving from gold to silver to fiat; gold scarcity can drive currency value up while prices fall for borrowers.

  • Fiat currency: currency with value because the government says so; has no intrinsic value but is accepted for transactions.

  • Bretton Woods 1945–1971: fixed-but-adjustable system; currencies pegged to the USD, USD backed by gold; IMF and SDR created to support cooperation.

  • End of Bretton Woods (1971): shift to floating exchange rates; currencies determined by market forces.

  • Triffin paradox: as the reserve-currency issuer, a country’s deficits may undermine confidence in its currency over time.

Exchange rate systems: types and purposes

  • No separate legal tender (currency boards/arrangements): use another country’s currency; example: Ecuador uses USD; minimal local currency management.

  • Currency board arrangements: hold foreign reserves to back domestic currency; aim to stabilize value (e.g., Hong Kong, Bosnia).

  • Conventional fixed peg arrangement: fixed par value with small allowable fluctuations.

  • Stabilized arrangement: minor fluctuations around a target rate.

  • Crawling peg: gradual, periodic adjustments to align with inflation/differences.

  • Peg within horizontal bands: rates allowed to move within a defined band around a central value (wider bands than fixed pegs).

  • Free-floating: supply and demand determine value with wide fluctuations.

  • China example: moved from a fixed peg to a crawl-like arrangement; previously pegged below the USD to keep price advantages. Current rule: rate stays within a ±2% band around a trend for six months.

Demand, supply, and the currency value intuition

  • Value of a currency is driven by supply and demand for that currency in foreign exchange markets.

  • Cross-border shopping and travel affect demand for currencies; e.g., Canada: more demand for CAD when buying Canadian goods, CAD appreciates; reduced demand leads to depreciation.

  • Policy actions (e.g., tariffs, monetary expansion) can shift demand/supply and thus the exchange rate.

Special topics: reserve currency, IMF tools, and currency manipulation

  • USD as the world’s primary reserve currency; central banks hold USD reserves; over time this can create Triffin-like pressures if deficits grow.

  • IMF Special Drawing Rights (SDRs): a notional unit of account to supplement reserves.

  • Currency manipulation concerns: pegged or semi-pegged regimes can be used to gain trade advantages; e.g., China’s past peg to USD led to persistent price advantages for its exports.

  • Country examples show both benefits and risks of pegs: stability vs. vulnerability during shocks (e.g., Greece’s euro integration, Mexico in the 1990s, etc.).

Digital money, stablecoins, and central bank digital currencies (CBDCs)

  • Fiat currency dominates; commodity money (gold) largely obsolete in modern systems.

  • Stablecoins: pegged to a fiat currency or commodity to reduce volatility.

  • CBDCs: digital form of a nation’s official currency; governments debate adoption; current stance varies by leader/administration.

  • Note: discussions about stablecoins and CBDCs are evolving; stay aware of policy shifts and their potential impact on cross-border trade.

Quick exam-ready takeaways

  • Floating vs fixed pegs: floating exchange rates move with supply and demand; pegs provide stability but can be destabilizing if the anchor is under stress.

  • Gold standard vs fiat: gold limits inflation but reduces flexibility; fiat allows flexible monetary policy.

  • Bretton Woods gave the USD a central role and created SDRs; crisis led to a move to floating rates.

  • The Triffin paradox highlights tension between a reserve-currency role and sustainable external finances.

  • Currency manipulation and reserve-currency dynamics matter for trade balances and geopolitical relations.

  • Digital money (stablecoins, CBDCs) may reshape international payments but depend on policy and adoption.

Key terms to remember

  • Fixed peg, conventional fixed peg, crawling peg, pegged within bands, free floating, currency board, SDR, fiat currency, intrinsic value, Triffin paradox, stablecoins, CBDC