Hi @himanshu56 ,
First, please create a date dimension table Calendar.
Calendar = CALENDARAUTO()
Then create a calculated column as below:
Rolling Sum Last 12 months =
SUM ( 'Table'[YTD] ),
ALL ( 'Table' ),
DATEADD ( LASTDATE ( 'Calendar'[Date] ), -11, MONTH ),
LASTDATE ( 'Calendar'[date] )
Community Support Team _ Rena
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