DH has an 11yo son who lives a couple of hours away & will be starting at secondary school in Sept. He pays £300 child support each month to his XP (on an unofficial basis) which is more than he would be required to pay through CSA based on his income but because she previously said she was struggling, he increased the amount a couple of years ago to try to help out.
After DH's XP left him a few years ago for her current partner (at least a couple of years before I met him), she also took a large lump sum of equity from the house (in the housing boom years) that DH had to borrow from his parents to buy her out. She was able to use this for a deposit on a new house and has told us that her current partner pays the mortgage and she is responsible for the bills and anything for DSS. Grandparents help with child care when needed.
However, she has come to us again saying that as DSS will be starting secondary school soon she will need more money from us to cover the additional expenses eg uniforms, bus fares, a laptop, broadband etc. DH really doesn't have much spare money and whilst he is willing to try to help with the one off expenditures (eg pay half towards new uniform), we don't feel he should have to increase the monthly child support as she would like to cover bus fares etc (especially as she has chosen not to send him to the nearest school where he would have qualified for free travel).
DH wants to ask her for a breakdown of how she is spending the £300 as he can't understand why she needs more money from him, i think this is unreasonable, however do not think we should pay an increased amount regularly, just contribute to specific one off items if needed.
I would appreciate any views.