For Attorneys & CPAs · Estate & Inheritance
By Brad Caponigro · Founder, Pointer Petroleum LLC · Reservoir engineer
Published · Updated
A charitable remainder trust under IRC § 664 (CRAT, CRUT, or NIMCRUT) lets a donor contribute appreciated property, retain a lifetime (or term-of-years) income stream, take a current-year charitable income-tax deduction equal to the present value of the remainder interest, and ultimately benefit a qualified charity at termination. The CRT itself is generally tax-exempt, so the trust can sell the contributed property without recognizing gain at the trust level — the gain is recognized incrementally as it flows out to the income beneficiary under the four-tier system in § 664(b).
For a mineral interest holder with low basis and high FMV — a Permian royalty inherited decades ago at $10,000 basis now worth $4M, for example — the appeal is straightforward: contribute the interest to a CRT, the CRT sells it tax-free to a buyer, the buyer’s purchase price funds the CRT corpus, and the donor receives an income stream while charity receives the remainder. The donor avoids the immediate $1M+ federal capital-gains liability.
The mineral-specific trap is that the strategy works cleanly for royalty interests but breaks for working interests, because of how § 512(b) treats the underlying income.
IRC § 664(c)(2), added by the Pension Protection Act of 2006 (effective for years beginning after December 31, 2006), provides that if a CRT has any unrelated business taxable income for a tax year, the trust is subject to a 100% excise tax on that UBTI. Pre-2006 law treated CRT UBTI more leniently — the CRT lost its exempt status entirely and was taxed as a complex trust on all its income for the year (former § 664(c)(1)). The 2006 amendment moved to a 100% excise tax on the UBTI itself, leaving the CRT’s general exempt status intact for non-UBTI income.
Both the pre- and post-2006 regimes have the same practical effect from the donor’s perspective: any UBTI is destructive. Under current law, a CRT that generates $50,000 of UBTI in a year owes $50,000 in federal excise tax — wiping out the income to the trust beneficiary on that slice. Multiplied across multiple years, this destroys the economics of the strategy.
The practitioner-side lesson at intake is that a CRT must be screened for UBTI exposure before any mineral interest is contributed, because the structure of the contributed asset is fixed once the contribution is made. Restructuring after the fact is difficult; a CRT sale of a UBTI-tainted asset back to the donor is a self-dealing event under § 4941. Plan ahead, not after.
IRC § 512(b) provides modifications to the general UBTI definition. Two are central for mineral interests:
— § 512(b)(2): "all royalties (including overriding royalties) whether measured by production or by gross or taxable income from the property" are excluded from UBTI computation, except to the extent of § 514 debt-financing.
— § 512(b)(3): rents from real property are excluded (with carve-outs for personal property and services), again subject to § 514.
The royalty exclusion is the foundation for using CRTs with mineral interests: a contributed lessor’s royalty, ORRI, or NPI generates royalty income that is excluded from UBTI under § 512(b)(2). The CRT receives the income stream tax-free and pays it out to the beneficiary under the four-tier rules.
What counts as a royalty for this purpose: a payment for the right to use or extract a natural resource, computed by reference to production or revenue, where the recipient bears no operating costs and has no right to participate in management of the extraction. The classic mineral lessor’s royalty squarely qualifies; ORRIs (carved from the lessee’s working interest) qualify; NPIs qualify if structured as a true profits interest with no management rights.
What does not count: working interests (the recipient bears operating costs, holds the lease, and has the management right), interests subject to debt financing (separately addressed by § 514), and arrangements where the recipient provides services beyond mineral access. The royalty character is a substance test, not just a label — an "ORRI" that includes management rights or cost obligations may be re-characterized.
A working interest in oil and gas property held by a CRT generates UBTI for two reinforcing reasons:
1. The income is from an unrelated trade or business under § 513. Operating an oil and gas well — even passively as a non-operating WI billed by JIB — is a trade or business of mineral extraction, regularly carried on, unrelated to any tax-exempt purpose. The CRT’s share of that gross income is unrelated business gross income.
2. The royalty exclusion under § 512(b)(2) does not apply. The CRT is receiving the working-interest share, not a royalty share. The IRS has consistently treated working-interest income as outside the § 512(b) modifications.
The practical consequence: a CRT that holds a working interest — whether contributed as a direct WI, contributed as a partnership interest in a WI-holding LLC or LP, or acquired by the CRT through reinvestment — will recognize UBTI on the WI’s share of net income each year. Under § 664(c)(2), the 100% excise tax applies. The strategy fails.
A related trap: the CRT sells a contributed WI shortly after contribution. The gain on the sale is also UBTI to the extent the WI is debt-financed or carries the trade-or-business taint at sale. Even a clean sale of an unencumbered WI by a CRT raises the question of whether the gain itself is UBTI under the trade-or-business analysis; conservative practice has been to treat it as such for properties producing UBTI in the year of sale.
For a donor whose only oil-and-gas asset is a WI, the CRT strategy is generally not workable as-structured. Three pre-contribution restructuring options exist (next section).
IRC § 514 modifies the § 512(b) royalty/rent exclusions: to the extent the income-producing property is debt-financed, the otherwise-excluded income becomes UBTI in proportion to the debt-finance ratio. For mineral CRTs, two debt-financing scenarios arise:
1. Acquisition indebtedness on the contributed mineral interest. If the donor contributes a mineral interest subject to a mortgage, lien, or other indebtedness incurred to acquire the interest, the contribution is treated as a sale-or-exchange to the extent of the debt under § 1011(b) (bargain sale rules) and the debt-financed portion of the income going forward is UBTI under § 514. Donors should clear any encumbrance on the mineral interest before contribution.
2. JOA cash calls and partnership-level borrowing. For an interest contributed as a partnership interest where the partnership has borrowed to fund development or to meet operator cash calls, the partnership-level debt may flow through to the CRT as acquisition indebtedness. The analysis is fact-specific (see Treas. Reg. § 1.514(c)-1) and depends on the timing of the borrowing relative to the contribution, the use of the proceeds, and the partner’s relationship to the debt.
The practical screen at intake: confirm that the contributed interest is unencumbered at contribution, and confirm that the entity (if held through one) does not have material outstanding acquisition-related debt. For royalty interests held directly with no debt, the § 514 modification typically does not bite.
A donor whose mineral asset is a working interest and who wants to use a CRT has three structural options, each with limitations:
1. Convert the WI to a royalty position before contribution. The donor sells the WI in an arms-length transaction, recognizes gain (defeating part of the CRT premise), and uses the proceeds for a different contribution. Or the donor exchanges the WI for an ORRI carved out of the same property (a partial conversion) and contributes the ORRI; the carved-out ORRI is a royalty-character interest excluded from UBTI under § 512(b)(2). Practical complications: the exchange is taxable to the extent gain is recognized; the operator must agree.
2. Lease the WI to a third-party operator before contribution, converting the donor’s position from active WI to lessor-of-leasehold. If the donor was an operating WI and assigns the leasehold to a third-party operator while retaining a royalty, the retained royalty is contribution-eligible; the operator now bears the costs. Practical complications: the assignment may trigger gain recognition, the lease terms are negotiated arms-length, and the original lease may have anti-assignment provisions.
3. Use a different vehicle. A flip CRUT (which becomes income-only-then-flips on a triggering event) or a NIMCRUT (net income with makeup) does not solve the UBTI problem — the underlying income character is still UBTI. The alternative vehicles to consider include a charitable lead trust (CLT), a private foundation (also subject to UBTI but at potentially lower-impact rates), or an outright deferred gift through a donor-advised fund (where the asset is sold by the DAF’s sponsor; the sponsor as a public charity has more flexibility than a CRT).
The planner’s job is to surface the WI-vs-royalty distinction at intake, before the donor commits to any specific structure. Drafting a CRT instrument and contributing a WI without the UBTI analysis is a recurring planning failure that surfaces only when the first 990-T is prepared.
Generally yes. § 512(b)(2) excludes "all royalties (including overriding royalties)" from UBTI computation. An ORRI carved from the lessee’s working interest is a cost-free production share that meets the royalty character test — the holder bears no operating costs and has no operating role. The exclusion is subject to the § 514 debt-financing modification. As long as the ORRI is unencumbered at contribution and the underlying lease has no debt-financing taint, the income stream to the CRT is excluded from UBTI.
The CRT receives a flow-through of the partnership’s items under subchapter K. The royalty share of partnership income retains its royalty character at the CRT level and is excluded under § 512(b)(2); the working-interest share retains its trade-or-business character and is UBTI. Under § 664(c)(2), any amount of UBTI triggers the 100% excise tax on that UBTI. A blended LLC interest is therefore not a clean fit; the partnership would need to either separate the royalty and WI assets into different vehicles before contribution or convert the WI assets to a royalty position before contribution.
For a clean royalty interest with no debt financing, yes — the CRT can sell the royalty to a third-party buyer, the gain is excluded from UBTI as a sale of investment property, and the proceeds become CRT corpus invested in marketable securities. For a working interest, the immediate sale does not eliminate the UBTI exposure: any income recognized between contribution and sale is UBTI from operation, and the gain on sale itself is potentially UBTI under the trade-or-business and debt-financing analyses. Conservative planning has the WI restructured before contribution rather than relying on a quick sale to cure the issue.
The deduction itself is computed under § 170 based on the FMV of the contributed property and the present value of the remainder interest — not on whether the CRT will recognize UBTI going forward. So the deduction is not directly reduced. But the practical value of the strategy collapses if the CRT pays the 100% UBTI excise tax annually — the income stream to the donor-beneficiary shrinks to zero on the UBTI portion, and the remainder to charity is reduced. The economic case for the structure depends on the income flowing to the beneficiary tax-efficiently; UBTI breaks that.
A private foundation is also subject to UBTI under § 511, with the royalty exclusion under § 512(b)(2) applying. A foundation does not have the § 664(c)(2) 100% excise tax; UBTI is taxed at the regular trust or corporate rates depending on the foundation’s form. A foundation can hold a working interest and pay UBTI on the income annually without losing its exempt status, which gives more flexibility than a CRT. But foundations are subject to the excess-business-holdings rule under § 4943 (which limits ownership of operating businesses) and self-dealing rules under § 4941; the structure has its own constraints. For a donor whose only mineral asset is a WI, a private foundation is sometimes the better-fit vehicle than a CRT — the analysis turns on the specific facts and the donor’s long-term charitable intent.
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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