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mtthplysr's avatar
mtthplysr
Copper Contributor
Mar 24, 2022
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How to calculate amount needed to get to max percentage

Hi everyone,   So I am working on an excel sheet for my investments. What I would like to calculate is how many assets I need to buy to have the transaction costs be max. 2% of the total sum.   I...
  • Riny_van_Eekelen's avatar
    Mar 24, 2022

    mtthplysr Not sure about your maths as a transaction cost of 4 on a purchase of 50 equals 8%. Not 29%. But perhaps I have misunderstood.

     

    If you now want to limit the cost %, you can use a formula like:

     

    Y / max % / X = n

     

    Used in your example that would be 4 / 0.02 / 50 = 4.

    To check it, buy 4 at 50 = 200. Cost % = 4 / 200 = 2%

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