Practitioner Tool

Royalty Income Tax Estimator

A practitioner-side estimator for the federal tax treatment of royalty income from oil & gas mineral, royalty, NPRI, and ORRI interests. Models cost vs. percentage depletion under IRC § 613A, the 65%-of-taxable-income cap, NIIT exposure, and Medicare IRMAA bracket flagging.

For use by attorneys and CPAs preparing client returns. Not a consumer tax filing tool. Outputs are estimates only and do not substitute for the practitioner’s independent judgment.

Last updated: April 27, 2026

Inputs

Gross royalty receipts

From 1099-MISC Box 2 / Schedule E

Post-production deductions

Operator-charged gathering, treating, marketing

Severance / production tax withheld

State tax already netted on royalty checks

Adjusted basis of interest

DoD FMV (§ 1014 step-up) less prior depletion

Estimated recoverable units

Reserves estimate (Mcfe / BOE)

Production this tax year

Units produced in this tax year

Other taxable income

All taxable income excluding this royalty

Filing status

Percentage depletion eligible. Confirm the owner qualifies under the § 613A(c) independent producer / royalty owner exemption (1,000 BOE/day cap on average daily production attributable to the taxpayer).Owner is on Medicare. Flags IRMAA Part B / D bracket impact when MAGI exceeds the base threshold.

Estimated treatment

Net royalty before depletion$49,600

Depletion (§ 611, § 613A)

Cost depletion$15,600

Percentage depletion (15%)$9,000

65%-of-taxable-income cap$149,240

Allowable depletion$15,600

Cost depletion exceeds percentage — using cost. Worth re-checking next year as basis is reduced and percentage may overtake.

Net taxable royalty$34,000

Federal tax (estimate on incremental royalty)

Marginal rate at this stack24%

Federal income tax on royalty$7,626

NIIT (3.8%, § 1411 threshold $250,000)—

Total federal tax on royalty$7,626

Effective rate on net taxable royalty22.4%

Limitations. Estimator covers federal ordinary-income tax on the incremental royalty plus NIIT and IRMAA flagging. State income tax, AMT (full computation), self-employment tax (only relevant to working interests), and full-return interactions (QBI, itemized deductions, capital-gain stacking) are out of scope. Use as a directional check, not a return-preparation substitute.

Authority. IRC § 611 (cost depletion); § 613A (percentage depletion for oil & gas, 15% rate, 1,000 BOE/day independent-producer cap, 65%-of-taxable-income limit); § 1014 (basis step-up at death); § 1411 (NIIT); § 57(a)(1) (AMT preference); 42 U.S.C. § 1395r(i) (IRMAA). Brackets reflect 2025 federal ordinary-income tables; verify annually as IRS adjusts.