What Is Currency Risk?
Currency risk (also called foreign exchange risk or FX risk) is the possibility that changes in exchange rates will affect the value of your international transactions. If you buy from, sell to, or pay anyone in a foreign currency, you are exposed to currency risk whether you realise it or not.
How It Affects Businesses
Imagine you're a UK-based retailer importing goods from the United States. You agree to pay a US supplier $100,000 for inventory. At the time you negotiate the deal, GBP/USD is trading at 1.25, meaning your cost in sterling is £80,000.
By the time you actually make the payment two months later, GBP/USD has dropped to 1.15. That same $100,000 now costs you £86,957, an increase of nearly £7,000 on a single invoice. Your margins have just been eroded by a currency move you didn't plan for.
The rates here are illustrative. For businesses with thin margins, moves of this size can turn a profitable contract into a loss-making one.
What Drives Currency Movements?
Exchange rates are influenced by a complex web of factors:
Interest rate differentials: When a central bank raises interest rates, its currency tends to strengthen as investors seek higher yields. The Bank of England, Federal Reserve, and European Central Bank decisions are closely watched by currency markets.
Inflation expectations: Higher inflation typically weakens a currency over time. If UK inflation is running above US inflation, GBP may depreciate against USD.
Political events: Elections, referendums, trade disputes, and geopolitical tensions can cause sharp, sudden moves.
Economic data: GDP growth, employment figures, trade balances, and manufacturing data all feed into currency valuations.
Market sentiment: Sometimes currencies move simply because traders expect them to. Fear, uncertainty, and speculation can amplify movements beyond what fundamentals would suggest.
Who Is At Risk?
Any business or individual with cross-border financial flows is exposed:
The Hidden Cost of Doing Nothing
Many businesses treat FX risk as an unavoidable cost of doing business. They convert currency when they need to and accept whatever rate the market gives them. This reactive approach is effectively a bet that exchange rates will remain stable.
As a hypothetical illustration: on £1 million of annual foreign payments, a 5% rate move is £50,000 (£1,000,000 × 5%) and a 10% move is £100,000 (£1,000,000 × 10%). Hedging is one way to take some or all of that variance out of the year.
Key takeaway: Currency risk isn't theoretical. It's a real, measurable cost that affects your margins, your cash flow, and your ability to price with confidence, and understanding it is the first step toward managing it.