My ExP owns his home outright, receives in excess of £1,200/month in disability benefits and works cash in hand. His only outgoings are food and utility bills for himself. Is it fair that he only pays £7.00/week maintenance for our DD10? For context, I am a lone parent and own a mortgaged home. I slightly exceed the threshold for universal credit. My disposable household income after mortgage and bills equates to half his, but with two people to support. Is the system broke? Should disposable income be considered by CMS when paying parent is in receipt of benefits?