IRC § 1014 Stepped-Up Basis for Inherited Mineral Interests

IRC § 1014(a) provides that the basis of property acquired from a decedent is the fair market value of the property at the date of the decedent’s death (or the alternate valuation date elected under § 2032). The purpose is to relieve heirs from capital-gains tax on appreciation that occurred during the decedent’s lifetime.

For most assets — publicly traded securities, the family home, a brokerage account — the step-up is mechanical: the closing price on DoD or the appraisal of comparable sales is the new basis. For oil and gas mineral interests, three features make the analysis less mechanical:

1. Mineral interests rarely have a quoted market value. Establishing FMV requires an appraisal that bridges the income approach (decline-curve forecast × forward-strip price) and the comparable-sales approach (recent transactions in the same play). The appraisal is itself a load-bearing document on later audit.

2. Royalty income accrues at production-month-end and is paid 60-90 days later. A decedent who dies on June 15 typically has accrued but unpaid May royalty (paid in late June or July) and accrued but unpaid early-June royalty (paid in late July or August). Some of those receivables are subject to step-up; some are income in respect of decedent (IRD) and not subject to step-up.

3. The interest itself may be in suspense — division-order changes pending, title disputes, unrecorded conveyances. The step-up still applies, but the operator may not realize new ownership exists for months after death.

For Form 706 estates (gross estate above the filing threshold), the IRS Estate and Gift Tax Examiners’ Handbook and the Service’s mineral-valuation guidance expect a written appraisal supporting the reported value. The appraisal should:

— Be performed by a credentialed mineral appraiser (AAPL CMM, ASA business valuation with mineral specialty, MAI with mineral-property training, or analogous credentialing).

— Effective as of the date of death (or alternate valuation date if § 2032 is elected).

— Use the income approach, comparable-sales approach, or both, with documented inputs (forward strip, regional differential, decline-curve fit, comparable-transaction documentation).

— Comply with USPAP Standards 9 and 10 (or the analogous standard of the appraiser’s credentialing body).

— Retain workpapers for not less than seven years.

For non-706 estates (gross estate below the filing threshold), the formal-appraisal expectation is lower in practice, but the consistent-basis ceiling under § 1014(f) does not apply (because no Schedule A was issued to the heir), giving the heir flexibility to establish a defensible basis on first disposition. A reasoned valuation memo from a qualified appraiser is far better than an heir’s self-estimated number when the eventual sale is examined.

The Pointer Minerals resource hub publishes an engagement-letter template for retaining a mineral appraiser specifically for this purpose; see /resources/templates/appraiser-engagement-letter.

IRC § 691 governs IRD: gross income earned by a decedent that was not includible in income before death because of the decedent’s method of accounting. IRD does not receive a basis step-up; it is taxed to the recipient at ordinary rates when received, with a deduction under § 691(c) for the federal estate tax attributable to the IRD.

For mineral-interest decedents, IRD is the right characterization for royalty production that was severed (i.e., produced from the well) before death but for which payment had not yet been received. The economic substance is that the royalty was earned by the decedent through production; the deferral until payment is a function of operator pay-cycle timing, not a transfer of value at death.

The practical rule of thumb at intake:

— Royalty checks received after death for production months ending before the decedent’s date of death = IRD. Ordinary income to the heir, no step-up.

— Royalty checks received after death for production months ending after the decedent’s date of death = post-death income to the heir as the new owner of the interest. Ordinary income, but governed by the heir’s own facts (depletion, etc.).

— The mineral interest itself = real property subject to § 1014 step-up to FMV at DoD. The future royalty income stream is part of what the appraiser values.

The trap: practitioners sometimes treat the entire post-death payment as IRD on the theory that production accrued to a now-deceased owner. This double-counts — the post-DoD-month production is not IRD; it is earned by the heir as the new owner. Splitting the payment by production month is the correct method.

In community-property states (TX, NM, LA, CA, AZ, ID, NV, WA, WI, and quasi-community in other contexts — plus AK, TN, FL, SD, and KY by community-property-trust election under those states’ statutes), § 1014(b)(6) provides that on the death of one spouse, both halves of community property receive a basis step-up to FMV at DoD — not just the decedent’s half.

For mineral-interest practitioners in TX/NM/LA, this is one of the highest-leverage planning points in the entire estate-tax code. Consider a Wolfcamp Permian royalty held as community property by a married couple, with low or zero original basis (acquired by inheritance or purchase decades ago) and a current FMV of $4M. On the death of the first spouse, the surviving spouse’s basis in the entire $4M interest is $4M. A subsequent sale by the survivor recognizes no gain. Compare to common-law states (PA, NY, OK, OH, etc.), where only the decedent’s half receives the step-up; the surviving spouse’s half retains its original low basis, and a subsequent sale recognizes gain on that half.

The § 1014(b)(6) treatment requires the property to actually be community at DoD. Two issues recur:

1. Inherited mineral interests are presumptively separate property under most community-property regimes. To qualify for the full community step-up, the spouses must have converted the interest by partition agreement or by transmutation into community property. Texas has a robust partition / community-property-with-right-of-survivorship statute (Tex. Fam. Code Ch. 4) that mineral practitioners use to engineer this result.

2. Mineral interests located in non-community states owned by a community-state-domiciled couple. The community-property characterization follows the law of the situs for real property (lex rei sitae), which for mineral interests means situs-state law. A TX-domiciled couple owning OK royalties: the OK royalties are presumptively separate-property unless OK law recognizes the community character. OK does not (it’s a common-law state), so the full § 1014(b)(6) step-up is unavailable for the OK interests. This is a planning-leverage point: titling matters.

IRC § 2032 permits the executor to elect to value the gross estate as of six months after DoD instead of DoD itself. The election is available only if it both decreases the gross estate value and decreases the federal estate tax. For mineral interests in falling-price environments (e.g., a 30% drop in WTI in the six months after DoD), the alternate valuation date can produce material estate-tax savings.

For stepped-up basis purposes, the basis is the alternate valuation date FMV when § 2032 is elected (§ 1014(a)(2)). The election is all-or-nothing for the gross estate; it cannot be elected for some assets and not others.

If any property is sold between DoD and the alternate valuation date, that property is valued at the disposition date (§ 2032(a)(1)). For a mineral interest sold between DoD and AVD, the basis is the disposition-date FMV (effectively the sale price), which produces zero gain on the disposition. The election should be evaluated against the timing of any expected mineral-asset sales.

The interaction with falling/rising commodity prices is meaningful. A DoD in late summer 2014 (peak WTI $107) followed by the price collapse to $44 by the AVD in early 2015 produced 60%+ basis reductions on Permian mineral packages — attractive for estate-tax purposes but with the consequence that the heirs’ basis on those interests is now far lower than the recovery price would have suggested. The § 2032 election is a tradeoff the executor signs up for in writing; the heirs live with the basis consequences for decades.

For decedents dying after July 31, 2015, § 1014(f) (added by the Surface Transportation and Veterans Health Care Choice Improvement Act of 2015) provides that the heir’s basis cannot exceed the value of the property as finally determined for federal estate-tax purposes. The procedural mechanism is Form 8971 / Schedule A, which the executor furnishes to the IRS and to each beneficiary.

For mineral practitioners, the consistent-basis regime means:

— The DoD appraisal value reported on Form 706 is the basis ceiling for every heir who receives the interest, going forward.

— An heir who later argues for a higher basis on disposition (e.g., because the appraisal was conservative) cannot succeed unless the underlying 706 value is reopened.

— The 8971/Schedule A workflow is the audit-trail anchor that makes this enforceable. See the dedicated post at /resources/form-8971-schedule-a-mineral-estates for the procedural mechanics.

The consistent-basis rule changed planning posture: pre-2015, executors had an incentive to report a low DoD value (lower estate tax) and heirs had an incentive to argue for a high basis on later sale (lower capital gain). Post-2015, the same value is binding on both sides. Mineral appraisals submitted with Form 706 should be defensible at both the estate-tax and the heir-disposition stage — they are now the same number.

Five § 1014 mineral-interest issues recur on practitioner files:

1. No DoD appraisal at all. The heirs sell years later, the IRS examines the basis on the Schedule D, and the only support is a back-of-the-envelope estimate. Audit posture is weak; the IRS’s alternative valuation will generally produce a lower basis (higher gain) than a contemporaneous appraisal would have.

2. Misclassifying post-DoD royalty receipts as IRD. Royalty paid in July for production-month June, where the decedent died on June 15, is split: half is IRD (production through June 15), half is post-death income to the heir (production June 16-30). Treating the full payment as IRD overstates the heir’s basis recovery and understates current-year ordinary income.

3. Missing the community-property step-up in TX/NM/LA. Inherited or pre-marital separate-property mineral interests do not automatically receive the full § 1014(b)(6) step-up. Affirmative partition or community-property agreements (where state law permits) are needed to engineer the result.

4. Electing alternate valuation without considering basis consequences. The estate-tax savings can be material in falling-price environments, but the basis reduction binds heirs for decades. Evaluate both sides before electing.

5. Failing to file Form 8971 / Schedule A for a 706-filing estate. The penalty (§ 6721 / § 6722) per heir is now meaningful, and the heir’s basis ceiling is exposed to IRS adjustment without the protection of a filed Schedule A.