Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Vote for your favorite vizzies from the Power BI Dataviz World Championship submissions. Vote now!

Reply
Anonymous
Not applicable

DAX - DATESADD FUNCTION (MTD AVerage of Previous Month)

Hi, I need help in this really bad.

I am trying to obtain Current MTD Average & Previous MTD Average of selected dates through a filter.

I have used the Following measure for the current MTD average:

Avg_DAILYBASE_CM =
CALCULATE(
    AVERAGE('DB'[DAILY_ACTIVE])
    , DATESMTD('DB'[DATA_DATE]
    ))
and used the Following measure for previous MTD average:
Avg_DAILYBASE_LM =
CALCULATE(
    AVERAGE('DB'[DAILY_ACTIVE]),
    DATEADD('DB'[DATA_DATE], -1, MONTH)
)
The data is calculated accurately (as attached in picture), but the total average is incorrect for the previous month's MTD. Can anyone please help out in this? Would really appreciate123.png

5 REPLIES 5
tamerj1
Community Champion
Community Champion

Hi @Anonymous 

please try

Avg_DAILYBASE_LM =
AVERAGEX (
VALUES ( 'DB'[DATA_DATE] ),
CALCULATE (
AVERAGE ( 'DB'[DAILY_ACTIVE] ),
DATEADD ( 'DB'[DATA_DATE], -1, MONTH )
)
)

Anonymous
Not applicable

@Mahesh0016 Hi thankyou for your reply, but unfortunately the issue still presists. after doing the recommended change the averages in days values have further become incorrect.

Plus the total average of the selected date range is of CM.

Hashmi_0-1686390023769.png

 

@Anonymous Please Try this

@Anonymous I hope this helps you!!THANK YOU!!
Avg_DAILYBASE_LM =
var MX_Month = MAX('DB'[DATA_DATE])-1
RETURN

CALCULATE(
    AVERAGE('DB'[DAILY_ACTIVE]),
    DATESINPERIOD('DB'[DATA_DATE], MX_Month,-1, MONTH)
)
Mahesh0016
Super User
Super User

@Anonymous I hope this helps you!!THANK YOU!!
var MX_Month = MAX('DB'[DATA_DATE])-1

Avg_DAILYBASE_LM =
CALCULATE(
    AVERAGE('DB'[DAILY_ACTIVE]),
    DATESINPERIOD('DB'[DATA_DATE], MX_Month,-1, MONTH)
)

@Anonymous Please share your ENDOUTPUT in table for better understanding.

Helpful resources

Announcements
Power BI DataViz World Championships

Power BI Dataviz World Championships

Vote for your favorite vizzies from the Power BI World Championship submissions!

Sticker Challenge 2026 Carousel

Join our Community Sticker Challenge 2026

If you love stickers, then you will definitely want to check out our Community Sticker Challenge!

January Power BI Update Carousel

Power BI Monthly Update - January 2026

Check out the January 2026 Power BI update to learn about new features.

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.