I’ve name changed as I’m writing this on behalf of a family member. I will answer any questions as best as I can.
A and B are a married couple with DC. They have completely separate finances and pay a percentage of bills equivalent to their income. They both work full time, incase that’s relevant. A and B are looking to sell their house and move somewhere bigger as they would like more room since their family has grown. Below are the amounts that A and B would be left with after paying their share of the household bills (mortgage, council tax, gas, electric, water, broadband, TV, home insurance and food) and childcare, if they moved to a particular house that they have seen and quite like.
A - £3800 leftover
B - £600 leftover
From the remainder that they have left each month, they both pay 50% of any additional child or household related costs and holidays, eating out and days out, Christmas and birthday presents. They then also pay for their own hobbies, cars (fuel, insurance, MOT, servicing, repairs etc), clothes, haircuts etc, anything else they might need.
They do not have family savings and do not have access to each others money. They transfer their own share of bills into the joint account each month and anything else is paid for by one person and the other bank transfers them half, if required.
B already has a much lower ability to save than A living in their current home, but their main issue with the potential house move is that it would make it even harder and the discrepancy would grow. They also worry that they will become somewhat of a bore within the family as they can’t match the lifestyle that A has and will want to continue to have, and that the DC will notice this.
If you were B, would you go ahead with this move? B is only considering it because their DC would benefit hugely due to the extra space, better schools, nicer area in general. B does not want to hold their family back.
Before anyone suggests it, A would not pay more. This is not something that A would want to do.