Relating to requiring a man determined by adjudication or acknowledgment to be a child's father to pay retroactive child support beginning on the first day of the calendar month in which the child's conception occurred.

HB 187 requires courts to order fathers legally determined to be a child's parent (through court judgment or written acknowledgment) to pay retroactive child support beginning the first day of the calendar month when the child was conceived. It also mandates reimbursement for the mother's pregnancy-related expenses, including medical costs, essential baby items (diapers, car seats, cribs, clothing, formula), and lost wages during pregnancy and delivery. The bill amends Texas Family Code to establish these requirements for paternity cases, applying standard child support guidelines for retroactive payments while delaying interest accrual until one year after the paternity order. This affects fathers whose legal paternity is established and mothers seeking financial support for pregnancy-related costs.