Up to total amount allocated for that year under that category, regardless of how many month's fee is that.

e.g. Tax relief category = RM500
Internet subscription = RM700/year
Can only declare for relief up to RM500

Yeah just an allround example, cos some years gomen split the tax category some years they consolidate into 1.
In this case lifestyle expenses used to be separate (computer purchase 1 item, sports equipment 1 item, journal/magazine subscription 1 item)