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Pal26's avatar
Pal26
Copper Contributor
Apr 16, 2025

Sliding scale Commission calculation

Hello ,

I am trying to create a formula in Excel to calculate interpolated commission rates based on a given loss ratio using a predefined table of loss ratios and corresponding commission rates.

Here’s the structure of my data:

  • Loss Ratios are in the range B29 to B42.
  • Corresponding Commission Rates are in the range D29 to D42.
  • I want to input a specific loss ratio in cell F1 and calculate the interpolated commission rate in cell F3.
  • Additionally, I want to calculate the final commission amount based on a total premium input in cell F2.
Loss ratio(B) Commission(D)
   
25.00% 42.50%
30.00% 41.25%
35.00% 40.00%
40.00% 38.75%
45.00% 37.50%
50.00% 36.25%
55.00% 35.00%
60.00% 33.75%
65.00% 32.50%
70.00% 31.25%
75.00% 30.00%
79.00% 29.00%

I attempted to use the INDEX and MATCH functions for interpolation, but I’m having trouble getting the formula to work correctly.

 

So , if my loss ratio is 45.7346, I want a formula to  calculate the commission % .  

Could someone please provide a concise formula or guidance on how to achieve this? Any help would be greatly appreciated!

Thank you!

3 Replies

  • Could you attach a small sample workbook demonstrating the problem (without sensitive data), or if that is not possible, make it available through OneDrive, Google Drive, Dropbox or similar?

    • Pal26's avatar
      Pal26
      Copper Contributor

      Thank you for the above reply . I need to use this on multiple worksheets so I need a dynamic formula . 

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