A working example
Company ABC import goods from the US, and needs to pay USD 1,000,000 in six months time to its supplier. The forward rate for six months is 1.5500.
The company needs to protect itself against adverse movements in the exchange rate, but also wants to benefit from any favourable exchange rate moves as this would help improve its profit margins. However, it’s reluctant to pay a premium for this benefit.
The company tells us it’s prepared to accept a worst-case rate (or ‘protected rate’) of 1.5300. Based on this, we allow it to participate in any favourable moves up to 1.6000 (the best-case rate).
When the Zero-Cost Collar expires, one of three things could happen:
Scenario 1
The GBP/USD rate weakens and at maturity the exchange rate is 1.4300. The company exercises the right to buy USD 1,000,000 at 1.5300.
Scenario 2
The GBP/USD rate strengthens and at maturity the exchange rate is 1.6600. In this case, the company will have to buy dollars at 1.6000, the agreed best rate that is still much better than the market rate at the time of dealing.
Scenario 3
The GBP/USD rate at maturity is between the best-case and worst-case rates. That leaves the company free to buy any amount at the prevailing spot rate.