Prorating revenue across year

[RyanBartz4]

My invoice data has some annual payments and my requirement is to accrue the revenue monthly for reporting. This is a view of a particular payment made in Oct 2022 with a contract/service period of 7/1/22 to 6/30/23. 

The revenue is prorating nicely by each month in the service period, but I can't get it to show in the totals. 

Revenue Prorated = 
VAR CurrentDate = MAX( 'Date'[Date] )
VAR RevProrated = 
    CALCULATE(
        SUM( 'Invoice'[Rev Prorated] ),
        KEEPFILTERS( 'GL Lookup'[Bill Type] IN{ "Recurring", "Non-Recurring" } ),
        KEEPFILTERS( 'GL Lookup'[Tower] = "MITO" ),
        ALL( 'Date' ),
        'Invoice'[Service Start Date] <= CurrentDate,
        'Invoice'[Service End Date] >= CurrentDate,
        NOT ( ISBLANK( 'Invoice'[Service End Date] ) )
    )
RETURN
    RevProrated

( The two keepfilters arguements just filter my invoice table to the business unit I'm reporting on. )

Any help is greatly appreciated! Thanks in advance!

[RyanBartz4]

Here are the applicable parts of my invoice table: 

I have a calculated column that divides the total contract revenue ( 'Invoice'[Ext Price] ) by the number of months in the contract, as follows: 

Rev Prorated = 
VAR Months = 
    IF(
        DAY( 'Invoice'[Service Start Date] ) = 01,
        DATEDIFF( 'Invoice'[Service Start Date], 'Invoice'[Service End Date], MONTH ) + 1,
        DATEDIFF( 'Invoice'[Service Start Date], 'Invoice'[Service End Date], MONTH )
    )
VAR MonthlyRevenue = 
    IF( 
        Months > 1,
        DIVIDE( 'Invoice'[Ext Price], Months )
    )
RETURN
    IF( 
        'Invoice'[Billing Frequency] IN{ "Annual", "Annually", "Multiple", "Quarterly" },
        MonthlyRevenue,
        BLANK()
    )