Current Month Day No Forecast

How about now? Tomorrow it will be 485 😁

Measure = 

SWITCH
	(
		TRUE(),
		AND
			(
                
				SELECTEDVALUE('Date'[Month_no]) < MONTH(TODAY()), 
				SELECTEDVALUE('Date'[Year]) <= YEAR(TODAY())
			),
        SUM('Budget Actual'[Actual Cost]), --Before Active Month
		AND
			(
                
				SELECTEDVALUE('Date'[Month_no]) > MONTH(TODAY()), 
				SELECTEDVALUE('Date'[Year]) >= YEAR(TODAY())
			),
		[Actual and forecast], --After Active Month
		TODAY () < 
			DATE
				(
					YEAR(TODAY()),
					MONTH(TODAY()),
					15
				),
		[Actual and Forecast PM], -- Active Month, Before 15
		SUM('Budget Actual'[Actual Cost]) -- Active Month, After 15
	)