Currency Risk, Forward Contracts, and When to Exchange Money: A Practical Guide

Currency risk is something most travellers and businesses encounter without knowing what to call it

You book a hotel in Paris in February for a July trip. The room is €200 per night. When you booked, €1 = £0.85, so you budgeted £170 per night. By July, €1 = £0.92. The room now costs you £184 — you're paying £14 per night more than you expected. That's currency risk.

For a holidaymaker, this is an inconvenience. For a UK business importing €500,000 of goods from Germany, a 5% adverse exchange rate movement is a £25,000 loss on the transaction. Managing this risk — or deliberately choosing not to — is one of the more consequential financial decisions international businesses make.

Floating vs. pegged currencies

Not all currencies move freely. Understanding the distinction explains why some exchange rates are volatile and others are stable.

Floating currencies: determined by supply and demand in foreign exchange markets. GBP, USD, EUR, JPY, AUD, and most major currencies float. Their value changes continuously during trading hours. The Bank of England, Federal Reserve, ECB, and other central banks may intervene occasionally to stabilise markets, but the rate is fundamentally market-determined.

Pegged currencies (fixed exchange rates): a country's central bank fixes its currency's value against another currency (typically USD or a basket of currencies). The central bank buys and sells its own currency to maintain the peg.

Examples:

• Hong Kong Dollar: pegged to USD since 1983 (7.75–7.85 range)
• Saudi Riyal: pegged to USD at 3.75 SAR per USD since 1986
• Danish Krone: pegged to EUR within ±2.25% (ERM II agreement)

Advantages of pegs: stability for trade and investment; predictable exchange rates; reduces currency risk for exporters.

Risks of pegs: require large foreign reserves to defend; if the peg becomes unsustainable, abandonment is often sudden and dramatic. When speculative pressure overwhelmed the Bank of England's reserves on "Black Wednesday" (1992), the UK was forced to abandon its ERM (European Exchange Rate Mechanism) peg — the pound fell 15% in one day.

The carry trade: borrowing cheap to invest in higher rates

The carry trade is a currency strategy that exploits differences in interest rates between countries. An investor borrows in a low-interest-rate currency (e.g., Japanese yen at 0.1%) and invests in a high-interest-rate currency (e.g., New Zealand dollar at 5.5%). The 5.4% interest rate differential is the carry.

Carry trades are profitable during stable periods — and can unwind catastrophically when volatility spikes. In August 2024, when the Bank of Japan raised interest rates unexpectedly, carry trades that had borrowed yen faced margin calls as the yen strengthened sharply. Global equity markets fell as the trade unwound across multiple days.

Forward contracts: locking in a rate

A forward contract allows a business (or individual) to lock in an exchange rate today for a transaction that will happen in the future. This eliminates currency risk but also eliminates the potential benefit if rates move in your favour.

How it works: A UK company invoices a US client $100,000 due in 90 days. Today's rate: £1 = $1.28 → the invoice is worth approximately £78,125. If the pound strengthens to $1.35 in 90 days, the invoice is only worth £74,074 — a £4,051 loss.

With a 90-day forward contract, the company locks in today's rate (approximately $1.29 including the cost of the forward). They know exactly what they'll receive regardless of how rates move.

Forward contract users:

• Exporters who invoice in foreign currencies
• Importers purchasing goods in foreign currencies
• Companies with overseas payroll (e.g., a UK company with US employees paid in USD)
• Investors protecting international investment returns

When to exchange money: the practical guide

For travellers, the question "when should I exchange currency?" has a practical answer based on transaction costs:

Best rates (lowest cost):

1. Local ATM withdrawals at the destination — typically mid-market rate minus ~1-2% bank fee
2. Wise / Revolut / similar fintechs — near mid-market rates with small flat fees
3. Post office or specialist travel money services — typically 1-3% off mid-market

Worst rates (highest cost):

1. Airport exchange bureaux — typically 5-10% below mid-market
2. Hotel exchanges — similar to airport
3. Dynamic Currency Conversion (DCC) at card terminals — when a card terminal asks "pay in GBP or EUR?" — always choose the local currency (EUR); paying in your home currency applies a DCC conversion at unfavourable rates

The general rule: the more "convenient" the exchange service, the worse the rate. Planning ahead and using a low-fee card or pre-loaded travel card produces meaningfully better outcomes for any significant amount.

Cryptocurrency and currency exchange

Stablecoins (USDC, USDT, EURC) are cryptocurrencies pegged to fiat currencies. They enable near-instant cross-border transfers at near-zero cost but come with counterparty risk (the issuer holding the reserves must remain solvent and maintain the peg).

USDC and similar regulated stablecoins have been used for genuine currency risk reduction:

• A contractor in Nigeria receiving USDC instead of Nigerian Naira protects against naira devaluation
• Businesses in countries with capital controls can hold USD exposure via USDC outside the banking system

These uses represent genuine utility rather than speculation — but they carry their own risks (regulatory, custodial, smart contract).

How to use the Currency Exchange tool on sadiqbd.com

1. Enter the amount and source currency
2. Select target currency — see the conversion at current mid-market rates
3. Use as a reference point — compare against the rate offered by your bank or exchange service to calculate the spread you're paying
4. Monitor trends — repeated checks help identify patterns in a currency pair you're watching

Frequently Asked Questions

What moves exchange rates day-to-day? Interest rate expectations (central bank policy), inflation differentials, trade balance data, political events, and risk sentiment all affect exchange rates. Major economic data releases (US CPI, Fed announcements, UK GDP) can move GBP/USD by 0.5–1% in minutes.

Is it better to exchange money before travelling or at the destination? For major currency pairs (GBP, EUR, USD), the difference between pre-travel and destination exchange is usually small if using a competitive provider. Using an ATM at the destination typically gives a good rate. Avoid airport exchanges and hotel desks regardless of timing.

Is the Currency Exchange tool free? Yes — completely free, no sign-up required.

Currency exchange is a transaction where the visible rate and the real cost are often different. Understanding the spread, forward markets, and practical strategies for minimising conversion costs applies whether you're a traveller comparing airport rates or a business managing a £500,000 import invoice.

Try the Currency Exchange Calculator free at sadiqbd.com — see live mid-market rates for any currency pair and use as a reference against the rates you're being offered.