This bill, titled the "Protecting Circuit Boards and Substrates Act," amends the Internal Revenue Code to establish a new tax credit aimed at incentivizing the domestic production of printed circuit boards. It introduces a printed circuit board credit , allowing taxpayers to claim 25 percent of the amounts paid or incurred for purchasing or acquiring printed circuit boards fabricated in the United States. This credit will be part of the general business credit and applies to expenses incurred after December 31, 2025. The legislation defines "fabricated" as manufacturing a connected composite structure using raw materials, and a "printed circuit board" as a layered composite providing electrical interconnections, including embedded components. The Secretary of the Treasury, in consultation with the Secretaries of Commerce and Labor, is tasked with promulgating necessary regulations and guidance for its implementation.