PolicyBrief
S. 4033
119th CongressMar 10th 2026
Critical Minerals Investment Tax Modernization Act of 2026
IN COMMITTEE

This bill increases the tax depletion rate for rare earth elements and scandium to 22 percent to incentivize domestic critical mineral production.

Jon Husted
R

Jon Husted

Senator

OH

LEGISLATION

Critical Minerals Tax Break: New 22 Percent Depletion Rate Aims to Boost Domestic Tech Mining

The Critical Minerals Investment Tax Modernization Act of 2026 targets a very specific corner of the tax code to make it cheaper for companies to dig up the raw materials that power our smartphones, EV batteries, and defense systems. Specifically, the bill amends Section 613(b)(1)(B) of the Internal Revenue Code to raise the 'percentage depletion rate' to 22 percent for rare earth elements and scandium. In plain English, this allows mining companies to deduct a larger portion of their gross income from their taxes to account for the fact that they are gradually using up the mineral deposits in the ground.

Digging Into the Tax Breaks Think of percentage depletion like the depreciation you might claim on a work truck, but for the earth itself. Currently, different minerals have different rates; by bumping rare earths and scandium up to 22 percent, the government is essentially putting them in the highest 'priority' bracket of the tax code. If you’re an investor or a project manager at a mining site in a place like Nevada or Wyoming, this change effectively lowers your tax bill once you start selling what you find. It’s a financial nudge designed to make expensive, risky mining projects more attractive to private capital by letting them keep more of their revenue.

From the Mine to the Mainframe While most of us aren't out there mining scandium on the weekends, the ripple effects are meant to hit our pockets and our gadgets. For a software engineer or a construction foreman, the long-term goal is a more stable supply chain. If these minerals are mined domestically rather than imported from overseas, it could eventually lead to more predictable pricing for the high-tech components found in everything from MRI machines to the sensors in a new F-150. The bill applies to any taxable year beginning after the date it is enacted, meaning companies could see these benefits on their next major tax filing.

The Cost of Doing Business There is no such thing as a free lunch in the federal budget. By allowing mining companies to keep a larger slice of the pie, the federal government is opting to collect less tax revenue from these specific operations. The trade-off is clear: the government is betting that the lost tax dollars will be worth the increase in national security and industrial independence. For the average taxpayer, the challenge will be ensuring that companies are actually extracting these specific critical minerals and not just rebranding standard mining activities to snag the higher 22 percent deduction rate.