How $175,000 of a $250,000 Drilling Investment Becomes a Year-One Deduction

A drilling program's subscription packet usually has one number circled: the share of your check that comes back as a first-year deduction. That number is the program's estimate of intangible drilling costs, and the regulation behind it decides which dollars qualify and which wait for depreciation or depletion.

The split is worth understanding before you sign, because it is the one part of the deduction the sponsor controls. You also get one choice of your own, and it is easy to miss.

1. What the regulation counts as intangible

Reg. §1.612-4(a) covers "wages, fuel, repairs, hauling, supplies, etc., incident to and necessary for the drilling of wells and the preparation of wells for the production of oil or gas." The option belongs to an "operator," which the regulation defines as anyone holding a working or operating interest, so a royalty owner gets none of it. Its examples are the amounts paid for labor, fuel, repairs, hauling and supplies used in three kinds of work: drilling, shooting and cleaning the well; clearing ground, draining, road making, surveying and geological work done to prepare for drilling; and building the derricks, tanks, pipelines and other structures needed to drill. The materials in those structures are not part of it.

The working test is salvage value. In the regulation's words, the option generally "applies only to expenditures for those drilling and developing items which in themselves do not have a salvage value." Labor never has salvage value, so the crew's wages for running casing are intangible even though the casing itself is not.

2. What waits for depreciation instead

Reg. §1.612-4(c)(1) carves out tangible property "ordinarily considered as having a salvage value." Its examples are the actual materials built into the well and on the lease, plus "drilling tools, pipe, casing, tubing, tanks, engines, boilers, machines." Structures for storing or treating oil and gas are excluded too, even the labor that goes into them.

That equipment is depreciated from the year the wells go into service. The IRS asset tables put well equipment in the 7-year class, and anything the program acquires after January 19, 2025 is eligible for 100% bonus depreciation, so the deduction usually lands in the in-service year rather than the year you paid.

3. The program makes the election, not you

Deducting IDC is optional. Under Reg. §1.612-4(d), the option is exercised by claiming the costs "as a deduction on the taxpayer's return for the first taxable year in which the taxpayer pays or incurs such costs," with no formal statement. Miss that return and the costs are treated as capitalized.

When you invest through a partnership, the partnership makes that call. Reg. §1.703-1(b)(1) lists "the option to deduct as expenses intangible drilling and development costs" among the elections "made by the partnership and not by the partners separately." Your K-1 reports the result. Ask the sponsor to confirm in writing that the program will expense IDC on its first return.

4. A $250,000 check, line by line

A single filer earns $500,000 in wages and claims the standard deduction. They buy $250,000 of general partner units in December 2026 in a program that budgets 70% to IDC, 25% to equipment and 5% to the lease. Drilling starts in February 2027.

For a single filer in 2026, the 35% bracket runs from $256,225 to $640,600 of taxable income. $483,900 and $308,900 both fall in it, so the whole $175,000 comes off at 35%. The $175,000 is also under the $256,000 excess business loss threshold for single filers, so the cap does not touch it.

The December payment counts in 2026 only because the program qualifies for the 90-day drilling rule, the rig starts by March 31, 2027, and the investor paid cash rather than a sponsor-arranged loan. The pillar guide below covers that rule and the other limits on the deduction.

5. The one choice you do get

Section 59(e) lets you give up the immediate deduction and amortize IDC over 60 months instead, starting with the month it was paid. Under §59(e)(4), the election can cover "any portion" of the expenditure, and in a partnership "shall be made separately by each partner with respect to the partner's allocable share." It can be revoked only with IRS consent.

For most investors, the full deduction wins. A loss the excess business loss cap pushes out of this year becomes a net operating loss you can use next year, which is faster than 60 months. Spreading pays off in a narrower case, the alternative minimum tax. Section 57(a)(2) treats excess IDC above 65% of your net oil and gas income as a preference item, and §57(a)(2)(E) switches that off for investors outside the integrated oil companies, but the relief is capped at 40% of alternative minimum taxable income. IDC amortized under §59(e) is not a preference at all; §59(e)(6) says so directly. An investor whose IDC is very large relative to income can elect §59(e) on just the slice that would breach the 40% limit.

6. Dry holes and carried interests

A dry well does not cost you the IDC deduction. The election covers all intangible costs, productive or not, so a duster's drilling costs are deducted the same way. What a dry hole does cost you is the production that was supposed to pay back the other 65 cents of each dollar.

A sponsor's promoted share can shrink your number. When drilling is done in exchange for a fraction of the operating rights, Reg. §1.612-4(a) says the costs "allocable to fractions of the operating rights held by others, must be capitalized." If a program's 70% figure ignores the sponsor's carry, the deduction you see on the K-1 can come in lower.

7. What to check in the subscription documents

• The IDC percentage and what it assumes. Ask whether it is calculated on your share after the sponsor's carry.
• The expensing commitment. Get written confirmation that the program will deduct IDC on its first return.
• The equipment schedule. Know which year the wells are expected to go into service, because that is when the equipment deduction lands.
• Your alternative minimum tax position. If the IDC is large next to your income, model whether a partial §59(e) election saves more than it defers.
• The exit. Deducted IDC is recaptured as ordinary income under §1254 when you sell, and amounts amortized under §59(e) are treated the same way.

We go through the budget and partnership agreement before you commit, model the deduction for each year, including whether a §59(e) election helps, and file your return once the K-1 arrives. Book a call, and have the subscription packet, the drilling budget and last year's return ready.

General information, not tax advice for your situation. Figures are federal and current as of November 2026; the IDC share in any program is that sponsor's estimate.