FINS3616 · International Business Finance
MNCs and Exchange Rate Determination
Week 1 of UNSW FINS3616 International Business Finance sets up the whole course: the multinational corporation (MNC) as the unit of analysis, why its cross-border cash flows expose it to exchange-rate risk, and how an exchange rate is actually determined by the supply of and demand for a currency (Shapiro Ch 1–2). It fixes the quoting conventions and the intuition for appreciation versus depreciation that every later chapter reuses. This material sits squarely in the Weeks 1–4 block examined by the 35% mid-term Inspera quiz, where the reciprocal-flip percentage problem is the single most-tested calculation.
What this chapter covers
- 01The MNC: parent + foreign subsidiaries, the objective of maximising shareholder wealth, and the evolution from raw-material seekers → market seekers → cost minimisers
- 02Modes of overseas expansion (exporting → sales subsidiary → licensing → local production) and the theory of comparative advantage (and its limitations)
- 03Why international diversification can make an MNC less risky: earnings variability falls across imperfectly-correlated economies; total risk = systematic + unsystematic (CAPM prices only systematic)
- 04Exchange rate as the price of one currency in another; direct vs indirect quotes as reciprocals; equilibrium spot rate from currency supply and demand
- 05Computing exchange-rate changes: %Δ foreign ccy = (e₁−e₀)/e₀, the reciprocal home-ccy move (e₀−e₁)/e₁, and the asymmetry rule (A falls d ⇒ B rises d/(1−d))
- 06Drivers that move the equilibrium rate: relative inflation, real interest rates, growth/income, productivity/wages, and political/economic risk
- 07The real exchange rate e_real = e_nom × (P_foreign/P_home) and its competitiveness effect; central-bank independence, monetising the deficit, seigniorage
- 08Sterilised vs unsterilised FX intervention; the asset-market view that the spot rate ≈ a random walk driven by long-run prospects, not the trade balance
The reciprocal-flip: depreciation of one currency vs appreciation of the other
- +1Peso depreciation, measured on the peso's USD price: %Δ = (e₁ − e₀)/e₀ = (0.0680 − 0.0800)/0.0800 = −0.0120/0.0800 = −15.0%. The peso lost 15% of its value.
- +1To get the dollar's move you must flip to the dollar's price in pesos: before, 1/0.0800 = 12.50 pesos per USD; after, 1/0.0680 = 14.7059 pesos per USD.
- +1USD appreciation = (14.7059 − 12.50)/12.50 = 2.2059/12.50 = 0.17647 = +17.65%.
- +1The magnitudes differ because each percentage uses a different base. The asymmetry rule confirms it: if A depreciates by fraction d, B appreciates by d/(1−d) = 0.15/0.85 = 0.17647 = 17.65% ✓. A depreciation and the matching appreciation are never simple negatives of each other.
Key terms
- Multinational corporation (MNC)
- A firm that produces and sells in more than one country, run as an integrated whole (parent + foreign subsidiaries), with the objective of maximising shareholder wealth. Its cross-border cash flows are the source of exchange-rate exposure.
- Direct vs indirect quote
- A direct quote is the home-currency price of one unit of foreign currency (e); an indirect quote is foreign-currency units per one unit of home currency. They are reciprocals of each other (indirect = 1/direct).
- Reciprocal-flip asymmetry
- If currency A depreciates against B by fraction d, then B appreciates against A by d/(1−d) — not by d. The two percentages use different bases, so a depreciation and its matching appreciation are never equal in magnitude.
- Real exchange rate
- The nominal rate adjusted for relative price levels: e_real = e_nom × (P_foreign/P_home). A rise is a real depreciation of the home currency, making home goods cheaper relative to foreign, so the home country becomes more competitive in trade and foreign goods become relatively more expensive; a real appreciation (a fall in the rate) makes exports less competitive.
- Sterilised vs unsterilised intervention
- In unsterilised FX intervention the central bank lets its currency trades change the domestic money supply; in sterilised intervention it offsets the money-supply effect with an open-market operation, insulating the domestic money supply.
- Asset-market view of exchange rates
- The spot rate follows approximately a random walk, driven mainly by a nation's long-run economic prospects and expectations rather than by the trade balance; ~95% of FX turnover is capital-flow (asset) related, not trade related.
MNCs and Exchange Rate Determination FAQ
Why isn't a 15% depreciation of one currency the same as a 15% appreciation of the other?
Because the two percentages are computed on different bases. A depreciation is measured on the falling currency's price; the matching appreciation is measured on the other currency's (now different) price. Flip the quote and recompute, and you get d/(1−d) rather than d. This asymmetry is the most heavily tested numerical idea in Weeks 1–3, so it recurs in the mid-term MCQs with the naive equal-and-opposite value planted as a distractor.
What actually determines the equilibrium exchange rate?
The supply of and demand for the currency in the FX market. In the long run the biggest driver is the relative inflation rate (PPP logic — higher domestic inflation depreciates the currency); other drivers are relative real interest rates (higher real rates attract capital and appreciate the currency), relative growth and income, relative productivity and wages, and political/economic risk. The asset-market view holds that the spot rate is driven mainly by long-run prospects and behaves roughly like a random walk.
Are multinational firms riskier than purely domestic firms?
Not necessarily — often the opposite. Operating across economies whose business cycles are imperfectly correlated diversifies away part of any single country's risk, so the variability of the MNC's earnings tends to fall as it becomes more international. The net effect depends on whether the added risks of operating abroad outweigh the diversification benefit. Under the CAPM only systematic (market) risk is priced, but total risk still matters for distress costs and for small and medium firms.
Can AI help me with the Week 1 material in FINS3616?
Yes, as a step-by-step study aid. Sia is an AI tutor built to mirror how FINS3616 is taught and assessed at UNSW Sydney: it can drill you on fresh reciprocal-flip percentage problems, walk through direct/indirect quote conversions, and explain how each driver (inflation, real rates, growth, risk) shifts currency supply and demand. It checks your reasoning as you go but does not do graded work for you, and UNSW academic-integrity rules apply — use it to master the method before the mid-term.
Exam move
Make the reciprocal-flip calculation automatic first — it is the highest-frequency mid-term item. Practise the drill: measure the given move on its own quote, flip to the other currency's price, recompute on the new base, and confirm with d/(1−d). Then build a one-line map of the drivers that move a currency (inflation, real interest rates, growth/income, productivity/wages, political risk) and be able to give the direction and a one-sentence supply/demand reason for each — the exam asks for exactly that. Keep the direct-vs-indirect quote convention straight, because getting it backwards cascades into every later parity calculation. Remember the real-exchange-rate formula and its competitiveness reading, and be able to explain central-bank independence, seigniorage, and sterilised vs unsterilised intervention in a sentence each. These conceptual points and the flip calculation are exactly the Weeks 1–4 territory of the 35% closed-book Inspera mid-term, so rehearse them on the recorded tutorial questions under timed conditions. When a step won't click, ask Sia to re-explain it and set you a fresh problem in the same style.
Working through MNCs and Exchange Rate Determination in FINS3616? Sia is AskSia’s AI Business and Economics tutor — ask any FINS3616 MNCs and Exchange Rate Determination question and get a clear, step-by-step explanation grounded in how FINS3616 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.
