In Texas, child support is principally a percentage of the noncustodial parent's income, and that percentage is calculated using both parents income. Even if a parent is not working, the court may impute income to him (usually minimum wage) if he is physically capable of working and determined to be voluntarily unemployed. The resulting amount he would have to pay, or risk fines and jail.
Generally, though, the court will not look at his spouse's income. However, there are some exceptions. For example, the court may consider a spouse's income if one of the following occurs: (1) The parent paying the child support claims that he is unable to pay because of marital debts
. (2) The unemployment is intentional arrangement by the spouses in order to avoid paying child support. (3) The parent paying child support is using the marital regime to hiding assets. (4) Or, the child is in dire need of support. Absent those circumstances, a spouse's income is not typically factored in.
Marital assets may be at risk of seizure to cover arrears, however based on the information provided there shouldn't be any arrears at this point.