In this guide
What depletion actually is
When a factory owner's machine wears out, the tax code lets them deduct its cost over time as depreciation. When a mineral owner's reserves flow out of the ground and get sold, the same logic applies: the asset producing the income — the oil and gas in place — is being consumed. Depletion, authorized by IRC §611, is the deduction that recognizes this. Anyone with an economic interest in producing minerals can claim it: royalty owners, mineral owners, and working-interest owners alike.
Depletion is one of the three layers of the oil and gas tax benefits, and for royalty owners it is the layer that matters most: unlike the IDC deduction, which belongs only to those who pay drilling costs, depletion shelters the income of every producing interest, every year it produces.
The two methods, compared
| Cost depletion (§612) | Percentage depletion (§613A) | |
|---|---|---|
| How it's computed | Basis × (units sold ÷ total recoverable units) | 15% × gross income from the property |
| Requires cost basis | Yes — recovers it | No — independent of basis |
| Stops when basis is recovered | Yes | No — continues for the life of the well |
| Who can use it | Anyone with an economic interest | Independent producers & royalty owners only |
| Typical winner for small owners | Rarely | Usually |
The rule each year is simple: compute both, take the larger. Cost depletion can win early for a recently purchased or inherited interest with a high (or stepped-up) basis and strong production. But because percentage depletion keeps running after basis hits zero — a feature no other cost-recovery deduction in the code shares — it wins for most owners, most years.
Percentage depletion: the 15% rule
The headline benefit sits in IRC §613A(c), the independent producer and royalty owner exemption: qualifying taxpayers deduct 15% of gross income from the property each year. "Gross income from the property" means your share of production revenue at the wellhead — before the severance taxes and post-production costs that get netted out of your check, which is one reason owners routinely under-claim it.
The deduction that can exceed what you paid. Because percentage depletion is untethered from basis, a long-lived royalty can generate cumulative depletion deductions several times the owner's original investment. That is not a loophole you are exploiting by accident — it is the deliberate design of §613A, and it is why depletion is the single most valuable line on most royalty owners' Schedule E.
The three limits that cap it
- The barrel limit. The 15% rate applies to average daily production up to the taxpayer's depletable oil quantity — 1,000 barrels per day — or its gas equivalent, 6 million cubic feet per day (6,000 cf per barrel). Production above that is proportionally excluded. Individual investors essentially never hit this ceiling; it exists to keep the benefit with small producers and royalty owners.
- The property income limit. The deduction cannot exceed 100% of the taxable income from the property for the year — depletion can zero out a property's income but not drive it negative.
- The 65% overall limit. Total percentage depletion cannot exceed 65% of your overall taxable income; any excess carries forward to future years.
One further exclusion matters to every mineral owner who signs a lease: under §613A(d)(5), percentage depletion does not apply to lease bonuses, advance royalties, or any amount payable without regard to production. The bonus is fully taxable ordinary income; only the production royalty that follows gets the 15% shield. The details, including state-tax interaction, are in how royalties are taxed.
Who qualifies — and who doesn't
- Qualify: individual royalty and mineral owners (including heirs), working-interest owners, and independent producers — anyone with an economic interest who is not excluded below. This is the group the royalty-investing routes put you in when you own interests directly or through most partnerships (your K-1 passes depletion through).
- Don't qualify for percentage depletion: integrated oil companies, and taxpayers who retail oil or gas or refine more than a threshold volume of crude (§613A(d)(2), (4)). They may still claim cost depletion.
- Don't get it at all: owners of public oil stocks or ETFs — a shareholder owns the company, not an economic interest in the minerals, so no depletion flows through. This is one of the structural tax differences laid out in ways to invest in oil and gas.
A worked example
Suppose your royalty interest produces $20,000 of gross royalty income this year. The operator withheld $1,200 of severance tax and you paid $300 of county ad valorem tax. Percentage depletion is 15% × $20,000 = $3,000. On Schedule E you report the $20,000 gross, then deduct the $1,200 severance tax, $300 property tax, and $3,000 depletion — taxable royalty income of $15,500. At an illustrative 32% marginal rate, the depletion line alone saves $960 of tax this year — and a similar amount every producing year, forever, without ever exhausting.
Figures are illustrative. Your rate, your state, the 65%-of-income cap and the property-income cap all modify the result, and cost depletion should be checked in any year it might exceed 15%. Run the numbers with a tax professional — but make sure the depletion line actually appears on the return.
How to claim it
For royalty owners, depletion is claimed on Schedule E, line 18, against the royalty income reported from your 1099-MISC. Working-interest owners claim it on Schedule C alongside their other well deductions. Partnerships report each partner's share of gross income so the partner computes depletion individually on the K-1 figures. No election is required for percentage depletion — you simply compute both methods and deduct the larger — but you must track cumulative depletion claimed, because it reduces your basis and is recaptured as ordinary income under §1254 when you sell, as covered in selling mineral rights.
Why it's controversial
The depletion allowance dates to 1913, and percentage depletion — enacted in 1926 at 27.5% — spent decades as the most argued-over provision in the tax code, precisely because it can exceed invested cost. Congress cut the rate to 22% and then, in 1975, repealed percentage depletion for the majors entirely while preserving it at 15% for independent producers and royalty owners — the compromise that still stands in §613A. Critics call it a subsidy; defenders note it mirrors how every extractive industry recovers a wasting asset and that it now benefits mainly small owners, not integrated giants. For an investor, the debate matters only as a risk flag: the allowance has been trimmed repeatedly over a century, so model the benefit at current law and revisit it when the law changes — the same annual-refresh discipline this site applies to every tax figure.
Educational, not tax advice. Depletion depends on your specific facts — method, basis, income limits, entity structure — and the rules can change. Confirm the computation with a qualified tax professional. This page explains the mechanics; it is not personalized tax advice.