The Deficit Reduction Act of 2005 includes incentives for states to increase the amount of child support that is "passed through" to families on welfare, rather than retained to offset welfare expenditures. Beginning October 1, 2008, the federal government will share in the costs of a $100 per month pass-through for families with one child and a $200 per month pass-through for families with two or more children. This brief discusses the potential benefits and costs to families, states, and the federal government if all states implemented a $100/$200 pass-through and disregard.