If are you asking can you get child support that was not paid before the child became 18 then in the UK you should contact the CSA There is too much variation by state to give an all inclusive answer. Suffice it to say your options range from: there is nothing you can do; to, you have until the age of twenty-one to file civil suit to recover what is owed. This is specific to the child. The custodial parent has no right to the money. There is precedent in the states of Florida and Michigan where a child sued her father for back child support in excess of $100K and won. this might be a place to start. Since child support is mandated by federal law, you might want to file it in Federal District court to avoid state hassles.
Yes, up to 18 years retroactive.
See related question below
The parents of a child do not have an obligation to pay child support to whoever the child decides to live with. Only if the court grants custody to another person and orders the parents to pay child support would an obligation arise.
If your child is not living with you, you are not eligible to collect child support. The child support should go to whomever is caring for the child.
Your custodial parent can collect unpaid support that accrued under an order. Support sometimes continues after the child becomes an adult if the child is disabled.
yes
Public assistance recipients assign their rights to child support to the State which, presumably, will attempt to establish/collect support.
Reference to "seventy four percent" is unclear, but it seems unlikely that the child's mother could collect current child support in such a situation. (She can still collect past-due support, if any.)
If you're on SSD, there is a child benefit child. SSI & Retirement have no such provision. SSI cannot be attached for child support.
There is no statute of limitations on collecting support arrearages.
No, child support can only be taken from the birth parents.
To my knowledge, felons are not prohibited from collecting child support.