how can i find out how much back child support is owed to me?

Simply request a printout from child support enforcement. Both parents should do this yearly as CSE has very poor accounting practices.

Is there a court order for your ex to pay support? If so, then call the prosecutors office in your county and ask for the Child Support Division. Or you can just go to the Clerk's Office at the county court house and ask for a child support print out.

Verify whether the court where you got your divorce ordered support (it's very rare they there would not be a support order), and contact child support enforcement. Many states now use private agencies for this, I'd start with a divorce attorney to find out who the agencies are you'd need to talk to.

Child support enforcement office.

Through your child support case manager..contact the local child support office that has your case, ask for the case manager who handles it and they also have a web site that you can check out your case information on.

if you file a complaint with your local child support enforcement agency they will do all the work for you and get the money if they can. otherwise you wld need to go back through bank records and compare them to when the order was filed.

Office of Recovery services in your state (or the state the child lives in). Are you sure you had an order for it? It isn't automatic in some states.

IVE BEEN SEPERATED FOR 20 YEARS HOWEVER MY EX HUSBAND GAVE ME CHILD SUPPORT FOR ABOUT 4 YEARS ONLY..HOW DO I FIND OUT IF I HAVE BACKED PAYMENT