> I have a drop down list where a user can select the month (cell I6).
> I also have a data set on another sheet like this:
>
> jul;aug;sep;oct;nov...Total;YTD Total
> 100;250;350;420;530...Total;YTD Total
>
> Assume date range starts in A1 and figures start in A2. Also, the fiscal
> year starts in July, not January.
>
> What I'd like to have happen is that depending on the month selected
> from the list - for that selection to drive a YTD sum
> calculation/function, i.e. If the user selects October from dropdown
> list - then the YTD total sum will only include months upto and
> including October only (i.e. July, Aug, Sep, Oct).
Try this for the YTD total:
=SUM(OFFSET($A$2,0,0,1,MATCH(I6,A1:L1,0)))
This assumes that the same month name spellings are used in I6 and A1:L1.
Modify as needed.