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## Average of 12 months plus last month of previous year

Hey guys,

I want to calculate an average of monthly values of GAV for a year. But instead of starting at January, start at December of the previous year and include all months of year (and for ongoing year all months to date) + december last year. It was so simple in excel, and I can't figure out a solution on PBI.
Here is a simple example of what I am trying to do:

Any ideas how to set up the time inteligence for this?

2 ACCEPTED SOLUTIONS  Solution Sage

Do you have Year column in your table, or you use a Date table? I am using the same to show you one way ``````Ave =
VAR CurY=MAX(factTable[Year])
RETURN
AVERAGEX(FILTER(ALL('factTable'),factTable[Data]>=DATE(CurY-1,12,1)&&factTable[Data]<=DATE(CurY,12,31)),[GAV])``````  Solution Sage

Yes, your case is different from the simple Excel sample, so modified a little bit ``````Average GAV =
VAR CurY=MAX(Dates[Year])
RETURN
AVERAGEX(FILTER(T1,[EndOfMonth]>=DATE(CurY-1,12,1)&&[EndOfMonth]<=DATE(CurY,12,31)),[TEST])``````

4 REPLIES 4  Solution Sage

Do you have Year column in your table, or you use a Date table? I am using the same to show you one way ``````Ave =
VAR CurY=MAX(factTable[Year])
RETURN
AVERAGEX(FILTER(ALL('factTable'),factTable[Data]>=DATE(CurY-1,12,1)&&factTable[Data]<=DATE(CurY,12,31)),[GAV])``````  Helper I

Hey, thank you a lot it does seem to work with the excel data, but my PBI model has a few extra details and for some reason it does not include the december of last year it seams. I am attaching an example file:
https://www.dropbox.com/s/a006u6lay2mnsvl/Example7.pbix?dl=0
In this case the expected value for 2021 would be 27176766,83.  Solution Sage

Yes, your case is different from the simple Excel sample, so modified a little bit ``````Average GAV =
VAR CurY=MAX(Dates[Year])
RETURN
AVERAGEX(FILTER(T1,[EndOfMonth]>=DATE(CurY-1,12,1)&&[EndOfMonth]<=DATE(CurY,12,31)),[TEST])``````  Helper I

Worked like a charm, thank you 🙂 Announcements #### Microsoft named a Leader in The Forrester Wave

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