For Attorneys & CPAs · Estate & Inheritance
By Brad Caponigro · Founder, Pointer Petroleum LLC · Reservoir engineer
Published
IRC § 170(h) governs qualified conservation contributions. The deduction is available for a contribution of a qualified real-property interest to a qualified organization, exclusively for conservation purposes, with the conservation purpose protected in perpetuity. For a typical agricultural or open-space easement on intact fee simple, the § 170(h) analysis is well-trodden.
Mineral severance complicates two of the qualification gates:
1. § 170(h)(5)(A) requires the conservation purpose to be protected in perpetuity. Subsurface mineral development that disturbs the surface defeats perpetuity. If the donor does not control the minerals, the donor cannot guarantee perpetual surface protection.
2. § 170(h)(5)(B)(i) provides a specific carve-out / qualification rule for the case where the donor retains a qualified mineral interest, or where the minerals are owned by a third party. The rule: the deduction is allowed only if the probability of surface mining is "so remote as to be negligible." This is the operative test for any easement on land where someone other than the easement-encumbered owner controls the minerals.
Mineral severance is the norm in much of the U.S. — substantial portions of TX, OK, NM, ND, WY, KS, OH, PA, WV land has minerals severed from the surface decades ago. The default assumption that an easement donor owns the minerals is wrong in those jurisdictions. The intake step is a title search before the easement is even drafted.
The "so remote as to be negligible" language traces to Treas. Reg. § 1.170A-14(g)(4)(ii) and the legislative history of § 170(h). The standard is interpreted to require that any reasonable possibility of surface mining or surface-disturbing extraction be effectively zero based on the geological, economic, and operational facts at the time of contribution.
Factors the IRS and courts have weighed:
— Whether the mineral estate has any commercially recoverable resource (e.g., the area has no identified oil/gas reservoir, no coal seam, no minable mineral deposit). Negative geology pushes toward "remote."
— Whether there is any current or recent leasing activity in the immediate area. Active leasing with bonus payments and recorded leases pushes against "remote."
— Whether there are nearby producing wells or mines. Production within a few miles pushes against "remote."
— Whether the operator (if any) has surface-use rights. A severed mineral estate with reasonable surface-use rights under state law (the dominant-estate doctrine in most western states) is not "remote" merely because no operations are currently underway — the right to operate is the inquiry, not the present exercise.
— The terms of any existing lease and the terms of the surface-protection covenants the donor proposes to impose by easement. A severed mineral lease that grants reasonable surface use cannot be overridden by a later easement; the easement does not bind the lessee.
The IRS’s posture in audit practice has been skeptical when the mineral estate is severed and active in the basin. A "remote and negligible" finding requires affirmative documentation — typically a geological opinion plus a title and leasing review at the time of contribution. The donor’s appraisal and legal opinions should both speak to the standard explicitly.
Separate from the "remote and negligible" probability test, Treas. Reg. § 1.170A-14(g)(4)(i) imposes a categorical surface-mining prohibition. A conservation contribution is not deductible "if at the time of the gift the use of the property for the extraction of minerals by any surface mining method is permitted."
The regulation provides an exception under § 1.170A-14(g)(4)(ii) for cases where (a) the surface and mineral estates were separated before June 13, 1976, (b) the present surface owner is not related to any party that owns or has owned a mineral interest in the property, and (c) the probability of surface mining is "so remote as to be negligible." Both the date-of-separation requirement and the unrelated-parties requirement must be satisfied; the combination is sometimes called the "post-1976 separation" carve-out and is the practical avenue for many post-1976 deeds with severed minerals.
For easements where the mineral estate was severed after June 13, 1976 and the surface owner is in any way related to the mineral owner (common in family-ownership settings where parents conveyed minerals to children before the easement contribution), the categorical surface-mining prohibition cannot be cured by the "remote and negligible" finding. The easement does not qualify under § 170(h).
The oil-and-gas wrinkle: the surface-mining prohibition is targeted at mining (coal, hard rock, aggregate), not conventional oil-and-gas production. But the perpetuity test under § 170(h)(5)(A) still applies, and the "remote and negligible" probability test under § 170(h)(5)(B)(i) still applies, to oil-and-gas surface disturbance from drilling. Practitioners in oil-and-gas-producing regions routinely structure around the categorical surface-mining language but cannot escape the more general perpetuity and probability tests.
A "surface-only" conservation easement — where the donor owns only the surface and the minerals are owned by an unrelated third party — must navigate the qualification rules from a position of weakness: the donor cannot bind the mineral owner to surface protection.
The analysis at intake:
1. Title search for the mineral severance. Identify the mineral owner of record and the chain of severance.
2. Date-of-severance check against the June 13, 1976 cutoff in Treas. Reg. § 1.170A-14(g)(4)(ii). Pre-1976 severances have one analytical path; post-1976 severances have another.
3. Relationship analysis between the surface owner and the mineral owner. Family relationships, commonly-owned entity relationships, and other affiliations potentially defeat the carve-out under (g)(4)(ii)(B).
4. Geological and operational probability assessment. A geologist’s opinion (or a defensible internal documentation if no operations are remotely possible — e.g., a high-elevation rocky tract with no resource potential) supporting "remote and negligible" surface mineral activity. For oil-and-gas, the parallel is a petroleum-engineering or geologist opinion regarding drilling probability.
5. State-law analysis of mineral-owner surface-use rights. Most western mineral-producing states give the mineral estate dominance with reasonable surface-use rights; the donor should understand what surface activity the mineral owner could compel even over the donor’s objection.
6. Coordination with any existing mineral lessee. If the minerals are leased, the lessee’s surface-use rights under the lease are independent of the easement; the easement cannot subordinate them. If the minerals are unleased, future leases will encounter the easement-encumbered surface and may negotiate surface-use accommodations; this has commercial implications but does not retroactively cure the qualification problem if the surface-use rights existed at the time of contribution.
The documentation package supporting a surface-only easement on minerally-affected land should include the title search, the geological/petroleum-engineering opinion, the legal opinion addressing § 170(h)(5) qualification, the appraisal addressing FMV and the diminution-in-value analysis, and the easement instrument itself with whatever surface-use accommodations the parties negotiated.
Two strands of enforcement have tightened the conservation-easement landscape materially since 2017:
1. Notice 2017-10 listed syndicated conservation easement transactions as listed transactions for purposes of § 6011 and the reportable-transaction rules. A "syndicated" easement is one where investors are offered the opportunity to contribute capital to a partnership that holds property and donates an easement, with the resulting deduction allocated among investors at a high multiple of their cash contribution. Listed-transaction status carries reporting obligations under Treas. Reg. § 1.6011-4 and exposes participants to substantial penalties under § 6707A. Although Notice 2017-10 was vacated in November 2022 by the Sixth Circuit in Mann Construction v. United States for procedural-compliance reasons, the IRS issued proposed regulations (REG-106134-22) re-listing syndicated easements and continues to litigate the underlying transactions aggressively. Any easement structured as a syndicated investment vehicle should be screened against the listed-transaction analysis.
2. The perpetuity-clause cases. Hewitt v. Commissioner (11th Cir. 2021), Oakbrook Land Holdings v. Commissioner (6th Cir. 2022), and an extensive Tax Court line have invalidated easement deductions where the deed’s "judicial extinguishment" or "proceeds" clause did not strictly comply with Treas. Reg. § 1.170A-14(g)(6)(ii). The required language guarantees the donee organization a proportional share of any post-extinguishment proceeds in perpetuity. Easements drafted before the regulation was clearly enforced commonly contain non-compliant clauses; many have been disallowed in their entirety on this technical ground.
The practitioner-side lesson: every conservation-easement deed contributed under § 170(h) must be reviewed for the § 1.170A-14(g)(6)(ii) language, and any mineral-affected easement must additionally satisfy the § 170(h)(5)(B)(i) probability test and the § 1.170A-14(g)(4) surface-mining gate. A failure on any of these defeats the deduction in full.
The recurring intake workflow that produces a defensible easement contribution where mineral severance is in play:
1. Title and severance review at the outset. Do not draft easement language before the chain-of-title minerals analysis is complete. Identify the mineral owner, the date of severance, and any active leases.
2. Geological and operational probability assessment. Engage a credentialed geologist or petroleum engineer to opine on the probability of surface-disturbing mineral activity given the geology, the leasing history of the area, and the operational economics. The opinion should address the "remote and negligible" standard explicitly.
3. State-law surface-use analysis. Determine what the mineral owner could compel over the donor’s objection under state law and any existing lease.
4. Coordinate with any existing mineral lessee. If a lease is in place, document the lessee’s surface-use rights and any negotiated accommodations. Update the lease (with lessee consent) if surface-protection language can be strengthened.
5. Draft the easement deed with the § 1.170A-14(g)(6)(ii) extinguishment-and-proceeds language compliant with the post-Hewitt / post-Oakbrook standard.
6. Engage a qualified appraiser meeting USPAP Standards 9 and 10 to value the easement contribution. The appraisal must address the diminution-in-value of the encumbered property, the comparable-easement transaction record, and the donor’s pre- vs post-contribution position. See /resources/qualified-mineral-appraiser-standards for the appraiser-qualification analysis.
7. Document the legal opinion supporting § 170(h) qualification, including the mineral-related elements.
8. File Form 8283 with the donor’s return, including the appraisal summary and the qualified appraiser’s declaration.
9. Retain workpapers for at least seven years.
The practitioner who skips any step — particularly the title search at the outset — risks a complete deduction disallowance years later when the IRS examines the contribution. The cost of the upfront diligence is small relative to the eight- or nine-figure deductions sometimes claimed; the cost of disallowance plus accuracy penalties is large.
The categorical surface-mining prohibition is targeted at mining (coal, hard rock, aggregate). Conventional oil-and-gas drilling is generally not "mining" within the regulation’s usage. But the more general perpetuity requirement under § 170(h)(5)(A) and the "remote and negligible" probability standard under § 170(h)(5)(B)(i) still apply to oil-and-gas surface disturbance. An easement on land in an active oil-and-gas play with severed minerals will struggle to satisfy the probability standard regardless of whether the surface-mining categorical bar is implicated.
Affirmative documentation that the geological, economic, and operational facts at the time of contribution make the probability of surface-disturbing mineral activity effectively zero. Typically: a credentialed geologist or petroleum engineer’s written opinion addressing the resource potential and the operational probability; a leasing-history review of the immediate area; an analysis of any existing lease terms and the mineral owner’s state-law surface-use rights; and the legal opinion tying these elements to the regulatory standard. The donor’s self-assessment alone is not sufficient; the IRS expects independent professional opinions.
No. Treas. Reg. § 1.170A-14(g)(4)(ii) limits the carve-out from the categorical surface-mining prohibition to cases where the surface and mineral estates were separated before June 13, 1976. A post-1976 severance does not qualify regardless of the relationship of the parties or the probability of mining. For post-1976 severances, the easement either must not be subject to the categorical prohibition (no surface-mining potential whatsoever, including hard rock and aggregate) or the deduction does not qualify.
Notice 2017-10 and the proposed re-listing target syndicated transactions — partnerships marketed to investors with a deduction-to-investment ratio at the threshold defined in the notice. A single-donor easement on family land, even where minerals are severed, is not within the listed-transaction definition unless the deduction is being passed through a partnership to multiple non-family investors at the prohibited ratio. The qualification analysis under § 170(h) and the perpetuity requirements still apply, but the listed-transaction reporting and penalty regime is generally not implicated for a true single-donor contribution.
No. The two requirements are independent. Hewitt and Oakbrook addressed the perpetuity-clause language under Treas. Reg. § 1.170A-14(g)(6)(ii), which is one specific element of the perpetuity requirement. Compliance with that element does not cure a failure under § 170(h)(5)(B)(i) (the mineral probability standard) or § 1.170A-14(g)(4) (the surface-mining categorical prohibition). A complete qualification opinion must address every element; failure on any one element disallows the deduction.
Primary sources used in writing this article. These are not legal or tax advice — they are the public statutes, regulations, and authoritative materials the article draws from. Consult a qualified attorney or CPA before acting on any of them.
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