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purchase power parity and interest rate parity

Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA FM Exams › purchase power parity and interest rate parity

  • This topic has 1 reply, 2 voices, and was last updated 4 years ago by John Moffat.
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    Posts
  • April 1, 2021 at 8:52 pm #615713
    HamzaYusuf
    Participant
    • Topics: 45
    • Replies: 23
    • ☆☆

    Sir, I am having trouble with the following example. Please Correct me where I’m mistaken!

    [Example]
    The $100m is received from US Customer. The current Foreign Exchange rate is $/£ 1.543. The Local Inflation rate is 4% and Foreign Inflation rate is 3%.

    [Answer]
    Purchase Power Parity formula is used:
    S1 = $1.543 x (1.03 / 1.04) = $1.528
    [If we convert $100m Cashflow today for Cash in one year’s time, we will result in £65.45 round off]

    If there is an increase in Inflation rate of £ to 5%
    S1 = $1.543 x (1.03 / 1.05) = $1.513
    [$1.513 as compared to $1.528 is less which means if we convert $100m Cashflow it will result in £66.10m round off in one year’s time – which means we are getting more money]

    If there is a decrease in Inflation rate of £ to 2%
    S1 = $1.543 x (1.03 / 1.02) = $1.558
    [$1.558 as compared to $1.528 is more which means if we convert $100m Cashflow it will result in £64.19m round off in one year’s time – which means we are getting less money]

    If exchange rate is lower that mean we are getting more? [Correct?]

    Same goes with the Interest Rate Parity.

    April 2, 2021 at 9:12 am #615742
    John Moffat
    Keymaster
    • Topics: 57
    • Replies: 54701
    • ☆☆☆☆☆

    What you have written is all correct.

    If the UK inflation rate increases then the $/Pound exchange rate will fall. This means that the Pound has depreciated (1 pound will buy fewer $’s) and the $ has appreciated (1 dollar buys more pounds). So when the dollars are converted we end up receiving more Pounds.

    The opposite happens if the UK inflation rate falls 🙂

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