As a family law attorney in San Antonio, Texas, I've been seeing a lot of issues coming up lately regarding the modification of child support when the parents live in different states. It is amazing to me how confusing this area of the law is to judges and clients, and worse yet, to lawyers.
This post is a short primer on how child support modification works when one parent lives in a state other than the state in which the the child and/or the other parent live(s). There are several different scenarios, but let's start with the most common, and work our way up:
Scenario "A": Two people who live in Texas have a child together (it doesn't matter if they're married or not), and a child custody and support order is later issued in Texas (whether it's a divorce, paternity action, or otherwise just doesn't matter). Mom gets primary custody and Dad has to pay child support. Later, the father moves to another state when he gets a higher paying job, and mom wants to increase the child support due to dad making more money. Mom and child stay in Texas.
Scenario "B": Same scenario as above, except the two people live and have their child in another state. Later on, Dad moves to Texas for a better paying job. Mom and child stay in the original state.
"Scenario "C": Same scenario as above--support order issued in another state, mom and child then move to Texas and Dad moves to some other state, so that no one lives in the original state any longer (Mom and child are in Texas, Dad is somewhere else other than the original state).
There are obviously some variations to these scenarios, but these are the 3 basic scenarios that will determine what laws apply, and how they are applied. Obviously, the same rules would apply regardless of which parent had primary custody of the child.
The body of law that controls interstate child support matters (as opposed to child custody and visitation matters is called the Uniform Interstate Family Support Act (UIFSA). A version of that law has been passed in every state, and it is for the most part the same in every state. Interstate child custody and visitation disputes are governed by another interstate law called the Uniform Child Custody Jurisdiction and Enforcement Act, (UCCJEA) which I have discussed in other blog posts.
Quite simply, the UCCJEA governs child custody cases when interstate elements are present. UIFSA governs child support cases where interstate elements are present. This is the first source of confusion to clients, lawyers and judges. I've seen lawyers--even ones who are board-certified in family law-- file child support modification pleadings based on the jurisdictional requirements of the UCCJEA instead of UIFSA, and I've even seen judges agree with them at first, until they were educated on the law!