Hmmm strange, if I worked this out personally I get it to be 0.5points!
I was always told to round to the nearest 20 (i.e 20, 40, 60etc) so 43cals I would round down to 40cals and according to my points calculator if it contains 0.5g of Saturated Fat and 40cals then it is half a point. Was just wondering how we are getting different results???
But I am using the Points Calculator you get with your pack, not an online one so maybe that is where the difference comes from???