Can anyone advise, when working out net earnings, do I deduct childcare vouchers from gross income (as it's classed as salary sacrifice) and therefore reduces overall gross annual income. I am hoping so as they have asked for new wage slips and wife's child tax credit amounts in response to me advising them of the addition of our second child! It now looks like my assessment will in fact go up rather than down as I've not provided updated wage details for a couple of years!!!