Supplemental Security Income (SSI) is for low income elderly people who do not qualify for Social Security Disability (SDD). If you are receiving Supplemental Security Income your child support payments will not be automatically withdrew from your award. If however, you are receiving SSD, your child support obligation can be automatically withdrawn from this benefit.
If you have a minor child and you are receiving SSD, it is likely that the Social Security Administration will award a benefit to the minor child as well as yourself. If the Social Security Administration also pays a benefit to the minor child or the custodial parent, then this benefit may replace or contribute to your child support obligation.