A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Column B contains random dates
E2: =1/1/23
E3: =EDATE(E2,1)
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F2: =SUMIFS($C$2:$C$26,$B$2:$B$26,">="&E2,$B$2:$B$26,"<="&EOMONTH(E2,0))
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Sample file:
https://www.dropbox.com/s/o5f42pk0m0ntp2u/e052c6d7-47ff-4df2-a141-cd7df4a8b706.xlsx?dl=1
If you want more analyses consider to use a Pivot table, so you can group the dates and use slicers to get the month / quarter / year you want and much more. Give me a sign if you need further help.
Create a PivotTable to analyze worksheet data - Office Support
Andreas.