Remaining Forecast / Allocation

Actual & Forecast =
VAR _LatestDate =
CALCULATE(MAX(Dates[LatestMTD]), REMOVEFILTERS())
VAR _Forecast =
CALCULATE([Measure Forecast], KEEPFILTERS(Dates[Date] >= _LatestDate ))
VAR _Actuals = [Measure YTD]
VAR Result = _Actuals + _Forecast
RETURN
     Result