The Family Income Supplemental Credit Act (FISC Act) establishes a new federal program to provide direct monthly payments to eligible pregnant women and parents, aiming to enhance families' ability to provide for their children. This initiative replaces the existing Child Tax Credit with a system of ongoing financial support. Under the bill, pregnant women can apply for $800 monthly payments once their pregnancy reaches 20 weeks. For eligible children, qualified caregivers can receive $400 per month for children under six years old and $250 per month for children aged six to seventeen. A marriage bonus increases the total payment by 20 percent for married beneficiaries. Payments are subject to an income phase-out , reducing by $16.67 for every $1,000 of adjusted gross income exceeding $125,000 for single filers or $250,000 for joint filers. Additionally, total monthly payments cannot exceed one-twelfth of the beneficiary's annual adjusted gross income. An eligible child is defined as an individual under 18 who is not primarily self-supporting and is a U.S. citizen, national, or permanent resident. The Commissioner of Social Security will administer the program, including establishing a new Bureau of Family Statistics to gather necessary data. This legislation also repeals the existing Child Tax Credit (Section 24 of the Internal Revenue Code of 1986) and makes conforming amendments to the tax code, effectively replacing the credit with the new monthly payment system.