Balance sheet graph stop at current month

Since you did NOT attach the model, it is tough to get the eaxact DAX.

I kind of wrote the psuedo code, to cut off at the end of the today's month. Hope this helps!

Stock on Hand = 

var _EO_MONTH_today = EOMONTH ( TODAY(), 0)

var _sel_date = EOMONTH ( DATE(SELECTEDVALUE(Years[Year]), Selectedvalue(Months[Fiscal Month]), 1))

var _cut_off_date = IF (_EO_MONTH_today >= _sel_date, _EO_MONTH_today, _sel_date)

RETURN 
	CALCULATE(
		sum(TGLBalsheet[balance]),
		TGLBalsheet[accountid] IN {82,260,232,118},
-- Optional: I would recommend to use cut off date here. It is Okay to use months and year fitler too. 
		all(months),
		Months[Fiscal Month] <= MONTH(_cut_off_date),
		Years[Year] = YEAR(_cut_off_date)
	)