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Asked: 2026-05-24T04:58:31+00:00

I have a Excel spreadsheet that has two tabs, I have data on the

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I have a Excel spreadsheet that has two tabs, I have data on the DATA tab and the results of the data on the RESULTS tab. On the RESULTS tab I need to create a vlookup that will look for data on the DATA tab and subtract Column A from Column B. Is this possible with vlookup?

I have a before and after with the same clientID but data being copied/pasted will change.

Before 
A        B      C
1021    102    125.00
1022    102    150.00
1023    105    100.00

After
A       B        C
1021   102   125.00
1022   102   
1023   105   100.00

So each day I take the AFTER number and paste them over the before number, and get my new AFTER numbers from another tab.But if the pasted AFTER number does not have data for that specific account (in this case 1022), and the new AFTER number I get from another tab does not have data for 1022, my comparision will be off an account and will not notify me that this account is missing. I’m sorry, i know that is probably confusing.

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1 Answer

  1. Editorial Team

    I don’t actually get why you need to use VLOOKUP to substract two columns…

    In the results tab, you could just type 

    =IF(AND(DATA!B1<>"",DATA!A1<>""),DATA!B1-DATA!A1,"")

    And copy the formula down the whole column.

    The IF condition checks if both DATA!B1 and DATA!A1 are not empty, in which case it means they both have data and it will substract it. If one of the two columns is empty, it won’t do anything, which is what you want.

    If I didn’t understand your question correctly, feel free to comment and clarify and I will propose something else.

    Edit for VLOOKUP solution: I’m assuming that the client IDs are in column A in both tabs and you have to substract B from C in the same row as the ID in the DATA tab.

    In RESULTS, use the following formula (put this one in row number 1 and copy it down):

    =VLOOKUP(A1,DATA!A:C,3,FALSE)-VLOOKUP(A1,DATA!A:C,2,FALSE)

    This will return 0 if both fields are empty, C if only B is empty and -B if only C is empty.

    I can modify this if you need a different behavior depending on which columns are empty.

    Hope this helps!

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