What it means
Every hedge starts with an exposure. A company that will pay a supplier in euros in six months, or that has borrowed at a floating interest rate, or that will buy 400 tonnes of coffee next spring, has a position whose cost is unknown today.
A hedge introduces a second position that moves in the opposite direction, so the two largely cancel out. The instruments are fairly standard.
Forward contracts and futures lock in a price for a future date, options give the right but not the obligation to transact at a set price in exchange for a premium, and swaps exchange one form of payment stream for another, most commonly floating interest for fixed. Natural hedging, which means matching the currency of costs to the currency of revenue, is often the cheapest approach of all.
The trade-off is the point people most often miss. If the market moves in your favour, the hedge takes that gain away, so a company that hedged its euro purchases and then watched the euro weaken will have paid more than it needed to.
That is not a failed hedge; it is the price of certainty, and judging hedges by hindsight is the fastest way to abandon a sound policy. Hedges are rarely all-or-nothing.
The hedge ratio is the proportion of an exposure that is covered, and many treasury policies specify a sliding scale, covering perhaps 80% of exposures within three months and 40% of those between six and twelve months. Partial hedging reflects the reality that forecasts further out are less reliable.
There is an important line between hedging and speculating. A hedge is sized against a real, identified exposure; a position taken because someone believes a price will move is a bet, whatever it is called internally.
The distinction also matters for accounting, since only positions formally designated and documented as hedges qualify for hedge accounting treatment that keeps the offsetting movements in the same reporting period.
In practice
Real-world examples.
Example
An airline buys fuel futures covering 60% of its expected consumption for the next twelve months. When crude prices rise sharply, its fuel bill still increases, but by far less than competitors who left the exposure open.
Example
A property developer with a $12,000,000 floating rate loan enters an interest rate swap that converts the rate to fixed for five years. Its monthly payment becomes predictable, which is what the project's lenders and investors required.
Example
An exporter with costs in its home currency and revenue in dollars opens a dollar-denominated supplier account and starts sourcing components in dollars. This natural hedge removes part of the exposure without any financial instrument or bank fee.
Formula
Calculation
Hedge ratio = Value of exposure hedged / Total exposure. Effective cost with a forward = Exposure in foreign currency x Forward rate. Hedge gain or loss = Cost without the hedge - Cost with the hedge.
An importer knows it must pay EUR 2,000,000 to a supplier in six months. The current spot rate is $1.10 per euro, so at today's rate the bill would be 2,000,000 x $1.10 = $2,200,000. The bank quotes a six-month forward rate of $1.12, which locks the cost at 2,000,000 x $1.12 = $2,240,000, an insurance cost of $40,000 against today's rate.
Now consider two outcomes. If the euro strengthens to $1.20, the unhedged cost would have been 2,000,000 x $1.20 = $2,400,000, so the hedge saves $2,400,000 - $2,240,000 = $160,000. If instead the euro weakens to $1.05, the unhedged cost would have been $2,100,000, so the hedge costs an extra $2,240,000 - $2,100,000 = $140,000. Had the treasurer hedged only EUR 1,500,000, the hedge ratio would be 1,500,000 / 2,000,000 = 75%, and both the saving and the extra cost would have been three quarters as large.Case study
Seen in the real world.
This case is illustrative and the company is fictional. Copperbend Coffee Roasters, an invented speciality roaster, bought green coffee priced in dollars while selling roasted product on twelve-month fixed price contracts in its domestic market. When the domestic currency weakened by 14% over a single quarter, its input cost rose while its selling prices could not move, and gross margin fell from 41% to 29%.
The board's first instinct was to hedge everything, and the treasurer argued against it. Full hedging of an eighteen-month forecast would have committed the business to volumes it could not confidently predict, and any shortfall would have left it holding speculative currency positions rather than protection.
In this illustrative example the company adopted a layered policy instead: hedge 90% of exposures inside three months, 60% of those from three to six months, and 30% of those from six to twelve, reviewed monthly. It also shortened customer contracts from twelve months to six and added a clause allowing a price review if the exchange rate moved more than 8%. Margin volatility over the following two years fell markedly, and the business never again had to explain a quarter lost entirely to currency.
Watch out
Common mistakes.
- Judging a hedge by whether it made money. A hedge that lost money because the market moved favourably has done exactly its job, which is to remove uncertainty rather than generate profit.
- Hedging a forecast rather than a commitment. If the underlying sale or purchase does not happen, what remains is an open speculative position with no exposure behind it.
- Assuming a hedge removes all risk. Basis risk, timing mismatches, credit risk on the counterparty and imperfect correlation all mean protection is rarely complete.
Questions
People also ask.
What is the difference between hedging and insurance?
They are conceptually close, but insurance is bought from an insurer against a defined event for a premium, while a hedge is a market position that offsets a price movement.
Does hedging cost money?
Usually yes, either as an explicit option premium, as the difference between the spot and forward rate, or as the upside given up when prices move in your favour.
How much of an exposure should be hedged?
Most treasury policies scale the hedge ratio to forecast confidence, covering a high proportion of near-term committed amounts and progressively less of uncertain longer-dated exposures.
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