The interest rate differential between the two currencies.
The time to maturity of the forward contract.
Although the spot exchange rate is part of the forward rate calculation, changes in the spot rate generally do not materially affect the forward points, except when:
The movement in the spot rate is very large, and
The contract has a longer maturity.
A. Never ❌
Incorrect. Spot rate changes can have some effect in certain circumstances.
B. Only for very large movements and longer terms ✅ Correct
This is the accepted market practice and exam answer.
Under normal conditions, forward points are driven mainly by interest rate differentials, not spot rate fluctuations.
C. Spot is the principal influence ❌
Incorrect. The principal influence on forward points is the interest rate differential, not the spot rate.
D. Always ❌
Incorrect. Spot rate changes do not always materially affect forward points.
Remember:
Forward Rate = Spot Rate ± Forward Points
Forward Points ≈ Interest Rate Differential × Time
Spot rate movements usually have little effect on forward points unless they are very large and over longer maturities.
✅ Correct Answer: B. Only for very large movements and longer terms.
| Option | Quote | Ask (Offer) Rate |
|---|---|---|
| A | 1.4320–25 | 1.4325 |
| B | 1.4318–23 | 1.4323 |
| C | 1.4315–20 | 1.4320 ✅ |
| D | 1.4323–26 | 1.4326 |