Help with data between two dates

hi Anonymous 

You could try this simple way

step1:

Use CALENDARAUTO Function to create a dim date table as below:

Date = ADDCOLUMNS(CALENDARAUTO(),"YearMonthNo",YEAR([Date])*100+MONTH([Date]),"Year Month", YEAR ( [Date] )& " " & FORMAT ( [Date], "mmmm" ) )

Step2:

Use this logic to create a new table

New table = 
FILTER (
    GENERATE (
        'Table',
        SUMMARIZE ( 'Date', 'Date'[Year Month], 'Date'[YearMonthNo] )
    ),
    [YearMonthNo]
        >= YEAR ( [Start Date] ) * 100+ MONTH ( [Start Date] )
        && [YearMonthNo]
            <= YEAR ( [end date] ) * 100 + MONTH ( [end date] )
)

Result:

and you could also have a look this post that similar to your case.

https://community.powerbi.com/t5/Quick-Measures-Gallery/Periodic-Billing/m-p/409365

here is my sample pbix file, please try it.

Regards,

Lin