TN
My sister left her husband a little over a month ago. They have one child together from the marriage. The husband has not provided any support to the child other than occasionally buying a box of diapers. My sister has been paying all of the bills from the marriage without any help from him as the bills were all in her name. He refuses to help with anything since she left him. (She left him due to his constant infidelity and mental abuse).
He has recently told her that he doesn't have to do anything for the child as they are still legally married. Is this true? Can he get away with not paying for anything for the child? What happens when they go to court, will the judge order child support from the date of filing or the date of separation?
He also recently told her that he would go put himself of child support (I am guessing he means that he will go file so that he pays, since he has not kept the child one night since the separation). Does this have any bearings on the amount or will they just plug in the numbers and determine based on the calculator?
Thanks in advance?

