What it means
The moment a business earns, spends or borrows outside its home country, ordinary finance acquires extra layers. The same investment appraisal now has to deal with a second currency, a different tax regime, possible restrictions on moving cash out, and the risk that a government changes the rules partway through.
Currency risk is the layer most people meet first. It comes in three flavours: transaction exposure on specific invoices, translation exposure when overseas subsidiaries are converted into the parent's reporting currency, and economic exposure where a sustained currency move changes a company's competitive position.
Funding decisions change too. A company with euro revenue might deliberately borrow in euros so that debt payments and income move together, which is a natural hedge that costs nothing and often works better than a financial instrument.
Pricing money across borders relies on the relationship between interest rates and exchange rates. Interest rate parity says the forward exchange rate should offset the interest rate difference between two currencies, otherwise a trader could borrow cheaply in one currency, invest in the other and take a risk-free profit.
Beyond the mathematics sits country risk, which is harder to model. Capital controls, expropriation, weak contract enforcement and political instability are usually handled by adding a premium to the required return, insuring the exposure or structuring the investment through a joint venture with a local partner.
In practice
Real-world examples.
Example
A German machinery maker builds a plant in Mexico and funds it with peso borrowing rather than euro borrowing, so that if the peso weakens, both the revenue and the debt service shrink together. The natural hedge removes most of the translation volatility from group results.
Example
An Indian pharmaceutical group lists depositary receipts on a US exchange to reach dollar investors and lower its cost of capital. It accepts the extra reporting burden of a second regulator in exchange for a deeper pool of capital.
Example
A Kenyan agricultural exporter sells in dollars but pays wages in shillings and adds a country risk premium of three percentage points to its required return when appraising a new packhouse. The project still clears the hurdle, but only just.
Formula
Calculation
Forward rate = Spot rate x (1 + Home interest rate) / (1 + Foreign interest rate)
A US company expects to receive GBP 1,000,000 in one year. The spot rate is 1.2500 US dollars per pound, the one-year US interest rate is 4% and the one-year UK rate is 6%. The forward rate is 1.2500 x (1.04 / 1.06) = 1.2264. Selling the pounds forward locks in GBP 1,000,000 x 1.2264 = $1,226,400, which is $1,250,000 - $1,226,400 = $23,600 less than today's spot value, and that gap is the cost of the interest rate difference rather than a prediction that sterling will fall.Case study
Seen in the real world.
Brightwater Marine is an invented boatbuilder used purely for this illustrative case. Based in the United States, it opened an assembly yard in Poland to cut labour costs, funding the $6,000,000 build entirely with dollar debt at 5%, or $300,000 a year in interest.
The savings were real: assembly costs fell by around $900,000 a year. What the board had not modelled was the currency mismatch, because costs were now in zloty while the debt stayed in dollars, and a 12% move in the currency pair swung the dollar cost of the Polish operation by roughly $340,000 a year with no change in activity.
After two noisy years the treasurer refinanced $4,000,000 of the debt into local currency and hedged a rolling twelve months of expected zloty costs with forward contracts. Reported results became far steadier, though the underlying business had not changed at all. The illustrative lesson is that international expansion is a financing decision as much as an operational one.
Watch out
Common mistakes.
- Appraising an overseas project in the local currency and then converting the answer at today's rate, instead of forecasting the cash flows and rates together.
- Treating hedging as a way to make money, when its purpose is to reduce uncertainty and it will sometimes look expensive after the event.
- Ignoring the difference between cash a subsidiary has earned and cash the parent can actually receive, since dividends, taxes and capital controls all sit in between.
Questions
People also ask.
What is a natural hedge?
Matching the currency of your costs or borrowing to the currency of your revenue, so the two move together without buying an instrument.
Why do companies borrow in foreign currencies?
Usually to match income, to access cheaper or deeper capital markets, or to fund a local operation without moving money across borders.
How is country risk usually handled?
Through a higher required return, political risk insurance, local partners, or structuring the deal so less capital is exposed at any one time.
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