The ESA 'Harm' Rule: $521 Million Verified, $10 Billion Claimed

The U.S. Fish and Wildlife Service and NOAA's National Marine Fisheries Service⧉ have finalized a rule that removes the word "harm" from their Endangered Species Act (ESA) regulations — eliminating the 45-year-old reading that habitat modification alone can count as an illegal "take" of a listed species, effective September 14, 2026.▸ The rule contains two competing dollar figures for what that change is worth. The Services' own Regulatory Impact Analysis puts the annualized savings at $361.3 million to $521.0 million⧉, depending on the discount rate used. Industry commenters, in the same document, put the market the rule unwinds at close to $10 billion and 53,000 jobs⧉ — a figure the Services decline to certify, calling its magnitude "not amenable to reliable monetization."

The ESA prohibits the "take" of a listed species, and Congress defined "take" broadly — to harass, harm, pursue, hunt, shoot, wound, kill, trap, capture or collect.▸ In 1975, FWS defined "harm" to include habitat modification that disrupts breeding, feeding or sheltering, and in 1981 narrowed that to habitat modification that "actually kills or injures wildlife"⧉ — the version the Supreme Court upheld 6–3 in Babbitt v. Sweet Home (1995). That reading made habitat modification alone enough to trigger the ESA's permitting regime: landowners and developers whose projects might disturb a listed species' habitat needed an incidental-take permit under section 10(a), typically backed by a Habitat Conservation Plan (HCP).

This rule rescinds that regulatory definition outright⧉, leaving "harm" undefined and reverting to the narrower dissent Justice Scalia wrote in Sweet Home — that "take" requires an act "directed immediately and intentionally against a particular animal," not indirect habitat effects.▸ The change is prospective only: HCPs and permits already granted stay in force.

The Services conducted a formal Regulatory Impact Analysis and estimated annualized quantified cost savings of $361.3 million at a 3 percent discount rate and $521.0 million at a 7 percent discount rate⧉, attributing the savings to reduced planning, negotiation, mitigation and implementation costs for HCPs that will no longer be required.▸ The Services themselves said the scale of those savings was determined to be "economically significant"⧉, and separately, the Office of Information and Regulatory Affairs determined the rule is a "significant" regulatory action under Executive Order 12866, the threshold that triggers the White House's own review of significant rules. It is, in other words, the one number in this document built on a stated method — discount rate, cost categories, the works — and the agencies use it to justify the rule's economic footing.

Set against that is a very different kind of figure.▸ Commenters — the mitigation-banking and conservation-financing industry that grew up around section 10(a) permitting — told the Services that roughly $483 million has been spent to date on species habitat mitigation, with another $300 million in planned investment already "chilled" by the proposal⧉, and that the broader habitat-restoration market runs to nearly $10 billion and supports more than 53,000 jobs. The Services' written response does not attempt to verify or rebut those numbers. Instead it reframes the market itself: "the services sold in these markets are essentially regulatory rents," and "the magnitude of many potential effects...is unknown and not amenable to reliable monetization with current data."⧉ That is a legal argument about legitimacy, not an accounting one — and it leaves the $10 billion, 53,000-job figure standing in the record as an unaudited claim, next to a $521 million agency estimate built with a stated methodology.

Read side by side, the two figures aren't actually comparable: $521 million is an annual, recurring savings estimate; $10 billion is commenters' figure for the total size of a market, not an annual flow.▸ Five years of the agencies' high-end savings estimate — a little over $2.6 billion — would equal roughly a quarter of industry's claimed market value, a rough gut-check that at least keeps the two numbers in the same universe rather than confirming either one. What the record actually supports: the Services' $361–521 million figure rests on a named methodology (a Regulatory Impact Analysis with disclosed discount rates) that a reader can audit; industry's $483 million, $300 million, $10 billion and 53,000-job figures rest on commenter assertion alone, with no study, survey or methodology cited in the final rule, and the agencies say as much rather than disputing the totals directly.

Nothing changes for permits or HCPs already in effect — the rule is prospective only⧉.▸ Going forward, developers, timber operators, farmers and other landowners whose activity might disturb habitat but not directly kill or capture a listed animal no longer need a section 10(a) incidental-take permit for that habitat effect alone; other ESA tools — section 7 consultations for federal actions, section 5 land acquisition, critical habitat designations — remain untouched. Several tribes, including the Yakama Nation, Quinault Indian Nation and Cheyenne River Sioux Tribe, requested government-to-government consultation on the rule; the Services concluded it has no "tribal implications" requiring formal consultation because it is general in nature and does not target specific tribal lands or trust resources.