filled my S.A in in May unsure wether id done it right as it was my first one and i was hearing all diff things about what to declare and what not too..being that end of Sept they all have to be in i rang IR yesterday to check they had actually received it as have heard NOTHING from them in the four months, after many phone calls i find out my SA was recieved but they are 'behind' getting them sorted out and at minute, only working through the ones they received 16th April!!!!!!!!
Soooo..if i DO owe them anything which is doubtful, am i able to 'add' it onto next years tax code(ive been told this by another s.e person) or would i have to pay up straightaway?