But tax credits are for supporting THE FAMILY, what is he exactly investing IN?? a pension pot for himself? A new car and holiday for himself?
As a minimum the child tax credits should be coming to you.
If your eldest child is now working, do they still live at home? If so are they contributing at all? You better make damn sure that if they are its coming to you.
Who's home is it, who is on the tenancy. Is it private rent or housing association?
You are not crap with money, how sare he say that. You had a small amount of debt.
Call his bluff on the work thing and list all the stuff he is going to need to do. he would need to step up to all the things you are currently doing - take an equal role in parenting - that means school runs, meal planning and packing school lunches, paying for childcare, doing homework and after school clubs pick ups, bathtimes and friends parties, as well as remembering to buy presents. Plus splitting the inevitable time off needed for kids medical/dental appointments and sick days, and using his annual leave to help cover school holidays, as would you.
Then with the house, he should be doing an equal amount of laundry, cleaning, cooking, ironing, shopping, gardening, DIY, meal planning, organising holidays, organising the childcare/clothes shopping, making sure all relatives birthdays are remembered and presents bought.