Adult daughter (24) living at home. Earns about 28K. What sort of contribution would you expect towards household expenses? Our house is so expensive to run, and our household budget is strained - I'm only working part time as I'm a carer for my adult son, and we have an 18 year old at university who we're supporting. My husband's income is keeping us all afloat. We don't charge our daughter rent and she doesn't save any money at all. In fact she has debts. She works full time, and is also studying for a degree with the OU.