The Treasury Department’s recent report on tax expenditures has brought to light the escalating fiscal cost of the Inflation Reduction Act (IRA) tax credits. Over the next decade, the IRA’s energy tax credits, particularly those for electric vehicles (EVs) and charging infrastructure, are projected to cost over $1 trillion. This is a significant addition to the federal government’s budgetary challenges and burgeoning debt.
Before the IRA, the electric vehicle tax credit offered a maximum credit of $7,500 per electric vehicle. However, the IRA made several changes to EV credits, removing the per-manufacturer limit but introducing new restrictions related to critical minerals and battery components. The IRA also introduced two new EV-related credits: a credit for used EVs and a credit for commercial EVs.
Despite the IRA being a year and a half old, the cost of the IRA EV credits remains highly uncertain. Various cost estimates for the EV program have fluctuated due to several reasons, including changes in IRS restrictions and the Environment Protection Agency’s (EPA) tailpipe emissions regulation.
A new report from several energy and environmental research groups showed that while electric vehicle adoption in 2023 reached the high end of their original range of projections, the costs have been dramatically higher. Unfortunately, the IRA has underperformed in generating more clean electricity production, with new electricity production falling below projections.
As the United States faces elevated budget deficits, and with the major individual tax cuts from the Tax Cuts and Jobs Act (TCJA) expiring in 2025, policymakers should consider reforms to the IRA’s most expensive and less efficient provisions. Options could include reducing the generosity of the EV credits, re-introducing the per-manufacturer limit, or applying a specific annual dollar cap on the credits.
A more aggressive reform would involve repealing a large portion of the tax subsidies and replacing them with a carbon tax. This approach would directly target carbon emissions, making it more effective than green tax subsidies in reducing emissions. Furthermore, moving to a carbon tax would turn green tax policy from a fiscal sinkhole to a revenue generator, potentially helping to retain certain tax cuts from the TCJA or reducing the deficit.
In conclusion, while the goal of reducing carbon emissions is a legitimate one, the current approach via the IRA has proven to be costly and less efficient than anticipated. It is crucial for policymakers to consider reforms that would ensure the fiscal sustainability of green tax policies while effectively addressing carbon emissions. [source]

