The Inflation Reduction Act of 2022 offers a historic investment in the clean energy economy, U.S. manufacturing, and family sustaining jobs. Core to the law is a set of tax credits to spur deployment of clean energy projects. The law also establishes several bonus credits that can be layered on top of these base credits for projects that meet certain requirements. This guide is focused on one particular bonus credit: the 10% domestic content bonus credit. The U.S. Treasury Department released interim guidance on this bonus credit in May 2023. To access this domestic content bonus credit, developers can rely on U.S.-made iron and steel and an array of solar, wind, and battery components that are already domestically produced. Additional domestic capacity, including for segments where U.S. capacity is limited or still in its nascency, is expected to come online swiftly thanks to the Inflation Reduction Act’s more than $40 billion in direct investments in domestic clean tech manufacturing.