Currency Hedging Explained: How an FX Hedge Works

A British firm will collect $1,000,000 from a U.S. customer in 12 months. Today that money is worth GBP 781,250. By payday it could be worth GBP 710,227 or GBP 822,368, with no change in the sale at all.

That swing is currency risk, and a hedge is the tool that fixes it in place. This guide walks through exposure, the hedge ratio, forward rates versus spot, and how a hedge gain offsets a currency loss.

Where Currency Exposure Comes From

Exposure starts when a deal is priced in a currency that is not your own. The price is fixed in that currency, but its value at home keeps moving until the money is converted.

The U.S. International Trade Administration gives a simple case. A buyer agrees to pay 500,000 euros, and the euro is worth $0.85. The exporter expects $425,000. When the euro slips to $0.84, the same payment brings only $420,000, a $5,000 loss.

Direction matters, so read the quote first. The Federal Reserve lists most currencies as units per U.S. dollar. The pound and the euro are marked as U.S. dollars per unit instead. A GBP/USD rate of 1.2800 means one pound buys 1.28 dollars.

For a pound-based firm owed dollars, a higher rate hurts. At 1.2800, $1,000,000 is GBP 781,250. At 1.4080, it shrinks to GBP 710,227, because each pound now costs more dollars.

How Does a Forward Hedge Lock In a Rate?

A forward contract sets the exchange rate today for a fixed amount delivered on a future date. The ITA calls it the most popular way to hedge currency risk, with delivery dates from three days to one year out.

Here is the default example on our calculator, followed step by step.

1. Size the exposure. The firm is owed $1,000,000 in 12 months. Its home currency is the pound.
2. Read the spot rate. Spot is 1.2800 dollars per pound, so the payment is worth GBP 781,250 today.
3. Get the forward quote. The 12-month forward rate is 1.2950. The gap of 0.0150 is 150 forward points, or pips.
4. Pick the hedge ratio. At 100 percent, the whole $1,000,000 goes into the forward contract.
5. Lock the result. Divide $1,000,000 by 1.2950. The firm will receive GBP 772,201, whatever spot does.

The locked amount is GBP 9,049 below today’s spot value. That gap comes from the forward rate, not from a fee. Our calculator’s “Cost of Hedge” box shows 11,719, which is the same gap measured in dollars: $1,000,000 x 0.015 / 1.28.

Why the Forward Rate Differs From Spot

A forward rate is not a forecast. It reflects the gap in interest rates between the two currencies over the contract period.

The Bank for International Settlements calls this covered interest parity. It holds that the interest rate gap between two currencies should equal the gap between forward and spot rates. Otherwise, traders could earn a riskless profit by borrowing in one currency and swapping.

The BIS also notes that the rule has not held exactly since the 2007 crisis. A small “cross-currency basis” now sits between the two gaps. For everyday hedging, the forward still tracks the interest gap closely.

In our example, the forward sits 150 points above spot. As a percentage change, that is 0.0150 / 1.2800, or about 1.17 percent. Our guide to percentage difference vs percentage change shows why the starting value goes on the bottom.

Forward points only tell you the locked rate. They do not predict where spot will land in 12 months.

What Does the Hedge Ratio Change?

The hedge ratio sets how much of the exposure is locked. The rest stays open to spot. The CFTC glossary defines it as the value of the hedging contracts divided by the value of the position being hedged.

This is where the offset shows. Say the dollar weakens 10 percent and spot rises to 1.4080. Unhedged, the firm gets GBP 710,227. Fully hedged, it still gets GBP 772,201. The forward adds GBP 61,973, which cancels the currency loss beyond the locked rate.

Now say the dollar strengthens 5 percent, to 1.2160. Unhedged, the firm gets GBP 822,368. Fully hedged, it gets GBP 772,201 and gives up GBP 50,168. That forgone gain is the price of certainty.

A 50 percent hedge splits the difference. It keeps half the upside and takes half the downside.

How Do Options and Natural Hedges Compare?

A forward is an obligation, while an option is a right. The ITA describes an FX option as insurance against a falling foreign currency.

The option buyer pays a premium up front. The CFTC glossary defines that premium as the payment an option buyer makes to the option writer. When the currency falls, the option protects the rate. When it rises, the buyer walks away and converts at the better spot rate.

That flexibility costs more. The ITA guide states that options are more costly than forwards. With our calculator’s default option inputs, a 2.5 percent premium at a 1.3000 strike, the premium is GBP 19,231.

A natural hedge needs no contract. The firm matches foreign receipts with foreign spending, such as paying suppliers in the same currency. The ITA notes the risk shrinks further when those matched payments happen regularly.

The payment still has to travel between banks. Our comparison of wire transfer vs ACH speed and cost covers that side.

Try it with your own deal. Enter the exposure and rates in the currency hedge calculator and compare hedge ratios side by side.

Currency Hedging: Frequently Asked Questions

Sources and Further Reading

This article explains how currency hedges work for general education and is not financial advice. Real quotes, fees and contract terms come from your bank or provider. Reviewed for accuracy by Prof. Dr. Khalil Mudassar, PhD. Last updated September 27, 2026.