Critical Minerals Investment Tax Modernization Act of 2026
Summary
SB4033, titled the Critical Minerals Investment Tax Modernization Act of 2026, would amend the Internal Revenue Code to change the percentage depletion rules for certain rare earth minerals. Specifically, it adds rare earths—defined in the bill as the 15 lanthanide elements—and scandium to the category of minerals eligible for a 22 percent depletion rate, placing them alongside other listed minerals such as tantalum. The change is intended to update tax treatment for domestic extraction of these critical minerals.
The bill applies the new depletion rate to taxable years beginning after enactment, so it would affect future tax filings rather than retroactively changing prior years. In practical terms, it would alter federal tax law governing mineral producers by increasing the depletion allowance available for qualifying rare earth and scandium extraction, which could improve the economics of mining and processing these materials in the United States.
Impact
The bill would amend section 613(b)(1)(B) of the Internal Revenue Code of 1986, expanding the list of minerals eligible for a 22 percent percentage depletion rate to include rare earths and scandium. This would directly affect mining companies and other taxpayers engaged in extracting these critical minerals by allowing a larger deduction tied to mineral production. Because the bill is tax-focused and limited in scope, its legal impact is confined to federal income tax treatment of specified mineral resources.
Sentiment
There is no recorded committee transcript or vote history in the provided materials, so no formal debate or bipartisan sentiment can be measured from the record here. Based on the bill’s title and structure, it appears to be framed as a pro-investment, pro-supply-chain measure aimed at strengthening domestic critical minerals production. The absence of opposition statements or votes means the available context suggests neutral-to-supportive treatment at introduction, but not enough evidence to characterize broader legislative sentiment.
Contention
The main policy issue likely to draw attention is whether expanding the depletion allowance for rare earths and scandium is an effective way to encourage domestic mining and reduce reliance on foreign supply chains. Potential concerns could include the revenue cost of the tax preference, whether the benefit would primarily aid mining firms rather than downstream manufacturing, and whether the definition of rare earths is sufficiently precise. No specific objections or supporters are identified in the provided record, so these points are inferred from the bill’s subject matter rather than documented debate.