Foreign Exchange Risk

Foreign exchange risk, also called currency risk or FX risk, is the risk that a change in exchange rates reduces the value of cash flows, assets, liabilities or profits when they are measured in a home currency. It affects importers and exporters, multinational groups, investors holding foreign assets, banks, and payment firms that hold money in several currencies at once. Any business that agrees a price in one currency and settles or reports in another carries it.

FX risk is a form of market risk. It exists because most major currencies have a floating exchange rate, and even pegged currencies can be devalued. It is usually divided into transaction, translation and economic exposure, and it is managed by a firm's corporate treasury through business choices and hedging instruments. Accounting standards such as IAS 21 and US GAAP's ASC 830 decide how currency gains and losses appear in financial statements.

Imagine agreeing to buy a bicycle from a shop abroad, paying when it arrives next month. The price is fixed in the shop's currency, but your wages are in yours. If your currency weakens before you pay, the same bicycle costs you more, even though the shop has not changed its price.

Businesses face the same problem on a larger scale. A company that buys goods abroad, sells to foreign customers or owns a factory in another country never knows exactly what those amounts will be worth at home. Exchange rates move every day, so a profitable deal can become a loss. Managing foreign exchange risk means deciding which of these swings to accept and which to lock in or offset in advance.

• Transaction exposure. The risk on specific contracted amounts not yet settled, such as a payable in euros or a receivable in yen. It hits cash directly.
• Translation exposure. The risk that the reported value of a foreign subsidiary's assets, liabilities and earnings changes when its accounts are converted into the parent's reporting currency. It affects reported equity and profit, not cash.
• Economic exposure. The longer-term risk that exchange-rate shifts change a firm's competitive position, for example when a rival's home currency weakens and its exports become cheaper.

A related problem is currency mismatch, where a borrower earns in one currency but owes foreign currency debt; a sharp devaluation can then make the debt unpayable.

For a single transaction, the gain or loss in home currency is:

• $A$ is the amount in foreign currency, positive for a receivable and negative for a payable.
• $S_0$ is the exchange rate (home currency per unit of foreign currency) when the amount was agreed.
• $S_1$ is the exchange rate when it is settled.

Example: a US importer owes €1,000,000 in 90 days. When the order is placed the rate is $1.08 per euro, so the expected cost is $1,080,000. At payment the rate is $1.12. With $A = -1{,}000{,}000$, the result is $-1{,}000{,}000 \times (1.12 - 1.08) = -40{,}000$: the importer pays $1,120,000, a loss of $40,000 against the original expectation. Across a whole portfolio, banks and large firms estimate potential losses with statistical measures such as value at risk.

Firms use a mix of operational choices and financial instruments:

• Invoicing and pricing. Pricing contracts in the home currency shifts the risk to the counterparty; price-adjustment clauses share it.
• Natural hedges. Matching revenues and costs in the same currency, such as borrowing in the currency an asset earns, creates a natural hedge. Holding a multi-currency account lets a firm pay foreign bills from foreign receipts without converting.
• Forwards. A forward contract fixes the rate for a future date at the forward exchange rate; where a currency cannot be delivered offshore, a non-deliverable forward settles the difference in dollars.
• Swaps and options. An FX swap rolls a position from one date to another, a currency swap hedges long-term debt, and an option protects against adverse moves while keeping some upside, at the cost of a premium.

Hedging has costs and is rarely complete. Many firms set a policy, for example hedging a fixed share of forecast foreign cash flows for the next twelve months, rather than trying to predict rates.

Under IAS 21 and ASC 830, monetary items such as receivables and payables in foreign currency are remeasured at the closing rate, with differences taken to profit or loss. Results of foreign operations are translated into the reporting currency, with translation differences recorded in other comprehensive income. Firms that want hedge gains and losses to land in the same period as the hedged item apply hedge accounting under IFRS 9 or ASC 815, which requires documentation and effectiveness testing.

Payment and remittance firms face FX risk every day. A provider in a remittance network may quote a customer rate in the morning but buy the payout currency in the afternoon, or hold prefunded balances abroad that lose value if the local currency falls. They manage this by covering positions quickly, setting quote validity windows and building a margin into the FX spread. FX risk sits within a firm's wider risk management framework, alongside the settlement risk that arises when the two legs of a currency trade settle at different times.

• IFRS Foundation – IAS 21 The Effects of Changes in Foreign Exchange Rates
• Bank for International Settlements – Triennial Central Bank Survey of foreign exchange markets