I can't get my head around people who come onto threads and add comments that are completely unhelpful and judgemental and yet here we are. Let me break it down for you:
A person earning over 100k gets 67k post tax. Bear in mind most people earning over 100k are going to living in london. you have two kids. I am going with suburb amounts cos thats where i live but imagine in london proper would be waaay more.
Nursery fees full time for two kids here would be - £37,000 a year round here (and that's not one of the expensive things). That's more than half your take home pay!
A three bed house minimum would be £2000pcm for either rent or mortgage so call that £24k a year. Council tax is an additional £2k a year, gas and electric and water etc say another £3k, commuting into central london = £3k a year.
So that adds up to £69k a year and that's before the cost of a car, clothes, food, going out. that is just the basic necessities.
Someone earning £99k gets £600 a YEAR less but saves approx £22k on their childcare cost. PLUS they get the tax free childcare so that saves an addition £4k per year.
So the difference in earning £600 a year net could cost you £26k a year. You have to be earning i think £153k to get back to the same disposable income as you had at £99k
Seeing the problem here for those earning £100-150k? oh and between £100k-£125k you also start losing your personal allowance and at £125k start paying additional tax.
when things end on a cliff edge you make parents need to give up their careers just to pay for their childcare.