topic Previous Year DAX Calculation in DAX Commands and Tips

Previous Year DAX Calculation

Pawan — Mon, 05 Dec 2022 13:55:21 GMT

Hi Team

Please can you help me on below issue. I have created a table like below in power bi.

By default current month selection is applied and calculated CY and PY measures like below

CY= CALCULATE( Sum(SalesNetAmountGBP]),Date'[CurrentDayOffset]<=0)

PY = CALCULATE([CY], SAMEPERIODLASTYEAR('Date'[Date]))

Issue: When i have selected 2022 full year PY measure is showing data upto 2021 december 31st instead of 2021 december 5th (today). Please can you help to write DAX for PY measure to show last year today date data dynamically .

Thanks in advance

v-janeyg-msft

Re: Previous Year DAX Calculation

amitchandak — Mon, 05 Dec 2022 15:19:12 GMT

Pawan ,

PY = CALCULATE([CY], SAMEPERIODLASTYEAR('Date'[Date]), format([Date],"MMDD") <= format(today() ,"MMDD") )

Re: Previous Year DAX Calculation

Pawan — Mon, 05 Dec 2022 15:54:06 GMT

amitchandak thank you for your reply. The above solution works only for complete year(2022) selection. But is breaking when we select month or quarter. The measure should be dynamic based on Date selection.

Re: Previous Year DAX Calculation

tamerj1 — Mon, 05 Dec 2022 16:35:10 GMT

Hi Pawan

please try

PY =
CALCULATE (
[CY],
FILTER (
SAMEPERIODLASTYEAR ( 'Date'[Date] ),
FORMAT ( [Date], "MMDD" ) <= FORMAT ( TODAY (), "MMDD" )
)
)

Re: Previous Year DAX Calculation

Pawan — Tue, 06 Dec 2022 11:59:24 GMT

Hi tamerj1

Tha above solution is working for both month and year selection.

Thanks

Pawan