The Inflation Reduction Act (IRA) of 2022 aims to accelerate electric vehicle (EV) sales in the US by allocating $370 billion to climate and clean energy investments. The IRA will increase tax credits and incentives for clean vehicles, including commercial ones, while supporting domestic EV supply chains and charging infrastructure. The transportation sector provisions will accelerate the shift to zero-emission vehicles (ZEVs) by combining consumer and manufacturing policies. The IRA clean transportation provisions will speed progress towards the Biden administration's EV and climate goals. A study assesses the future impact of the IRA on electrification rates for LDV and HDV sales in the US through 2035. The study finds that on average, the IRA tax credits will reduce light-duty EV purchase costs by $3,400 to $9,050 over the period 2023-2032.