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Compound Interest

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(@andy_b)
Posts: 22
Eminent Member
Topic starter
 

Hi, I'm looking for some help to set up a compound interest calculation on excel to plan for my children's school fees in the years to come. There are several elements to the calculation. The figures are notional. I have set up the attached spreadsheet

- £10,000 at 5% per year for 20 years.

- There would be different annual fees as these would differ depending on their school year. I have put these as "school fees 1 - 10" at notional amounts at 2024 prices. These annual fees would need to account for annual inflation (let's say 3%). So I'd need a formula that would calculate the fees rate at this inflationary rate for a given selected year.

 
Posted : 30/01/2024 5:05 pm
(@catalinb)
Posts: 1937
Member Admin
 

Hi Andy,
To update the value with an inflation rate, try this formula:

E2*(1+5%)^(F2-YEAR(NOW()))

E2 is your initial value, F2 is the year selected. 

 
Posted : 06/02/2024 8:03 am
(@andy_b)
Posts: 22
Eminent Member
Topic starter
 

Thank you! That's really helpful.

Are you able to look at a similar calculation for the compound interest starting at an initial 10k?

 
Posted : 07/02/2024 4:48 pm
(@catalinb)
Posts: 1937
Member Admin
 

Try this in K2:
=$K$1*(1+3%)^(ROW(A1))

K1 is the initial value

 
Posted : 08/02/2024 1:28 am
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