income: before or after

Hi

when putting income in to the calculator, should you put in the amounts before or after seperation in particular, should i add in likely tax credits, child maintenence from one to other etc??

ie if net income is say £1300pm wife £2500pm husband before seperation, but after taking account of tax credits, child maintenence etc it is say £2000pm each, which goes in to the calculator??

I am coming from this as someone who is not yet seperated but trying to weigh up the potential finacial outcome.

I think it should be put in as 'Currant'. Regardless of your living arrangements. That's what's meant by full, frank, honest disclosure!

Not trying to hide anything, but here's what I'm getting at:-

I Put everything in and estimated pretty much equal outgoings.

calculator says husband pays wife £1150 (per month!!??) on one method and £750 on another.

Now here's the question:-

does the above amount(s) include any CM payable (approx £500pm)or is this in addition to CM at estimated 20% of net income??

Also, would it be reduced by any tax credits which would become payable?? (which obviously aren't at the moment as we still live together and have a "joint income" above the threshold??