Showing current and future months

Alright,

This was way more complicated than i thought. You will need a Financial Year column together with your period column. I have a table reference below the dax:

Calculated column = 
VAR Cm = MONTH(today())
VAR Cy = YEAR(today())
VAR Fp = IF(Cm > 6 ; Cm -6 ; Cm +6)
VAR Fy = IF(Cm > 6 ; Cy ; Cy -1)
VAR Ep = IF(Fp > 6 ; Fp -6 ; Fp +6)
VAR Ey = IF(Fp > 6 ; Fy +1 ; Fy)
Return
IF( 
OR(
AND([PERIOD] >= Fp ; [Financial Year] = Fy) ;
AND([PERIOD] <= Ep ; [Financial Year] = Ey)
) ; 
1 ;
0 )