Yes, that's correct. Noncustodial parent is disabled and receives SSDI. His children also receive SSDI payments due to his disability. These payments go directly from the Social Security Administration to the custodial parent for the benefit of the children. The Supreme Court of Arkansas has determined that these payments are to be considered income to the noncustodial parent for purposes of determining a net income for child support purposes.

Here's the link...
Arkansas Child Support Enforcement v. Jason Hearst