More of a moral dilemma than a money question per se.
We have two DC, the younger of whom will turn 3 at the end of the year and is in nursery full time. To help with nursery fees, we use Tax Free Childcare and 15 free hours and were looking forward to 30 free hours from January. It's a considerable saving.
DH and I have separate bank accounts which our respective salaries are paid into. Since moving in together 15 years ago we've always split all bills and household expenses 50/50 and then the remaining money is ours to do what we want with.
When we first lived together DH earnt a lot less than I did but still insisted on 50/50. For the last 5 years or so we've had roughly equal salaries, however DH has just got a big (very well-deserved and long overdue) promotion which has taken his salary over the threshold for all the childcare benefits. So instead of going down as planned, our payments will go up. The difference between what I thought we'd be paying from January and what we'll actually be paying is about £500 a month.
So, my question - should we split the increase 50/50 as we do with everything else, or should I ask DH to cover all/more of it as he is the one who's gone over the threshold?
(Yes I am aware that this is a first world problem and I'm not disputing the threshold itself, I just want people's views on what the right thing to do is in my situation.)