If you have an order for child support for those ten years, the court should have taken the court-ordered arrearage into account. If you are saying there wasn't an order, but he just never paid, then you have to get an order for that back support. That should have been done during the hearing(s) on your current support, but it's not automatic. You would have had to file and serve your own petition for that to happen.
Answered on Mar 22nd, 2020 at 8:42 AM