The Section 59(e) election lets you capitalize certain expenditures and deduct them ratably over a set number of years instead of writing them off all at once. It covers five categories of costs — circulation, domestic research and experimental, intangible drilling and development, mine development, and mining exploration — and taxpayers use it mainly to reduce alternative minimum tax exposure or to keep a large one-time expense from creating a net operating loss.
What Qualifies and Over How Long
Section 59(e)(2) defines five categories of “qualified expenditures,” and the statute assigns each a fixed amortization period. Deductions are spread ratably in equal annual amounts across that period.
- Circulation expenditures under Section 173 — costs a newspaper, magazine, or periodical publisher pays to establish, maintain, or grow its readership (not including land, depreciable property, or a purchased subscriber base). Amortized over 3 years, starting with the taxable year the cost was paid or incurred.
- Domestic research or experimental expenditures under Section 174A(a) — costs of developing or improving a product, process, formula, invention, or software within the United States. Amortized over 10 years, starting with the taxable year.
- Intangible drilling and development costs under Section 263(c) — non-equipment costs of drilling oil, gas, or geothermal wells, such as labor, fuel, supplies, and ground preparation. Amortized over 60 months, starting with the month the cost was paid or incurred (not the beginning of the year).
- Mine development expenditures under Section 616(a) — costs of developing a mine or other natural deposit, other than oil and gas, after commercially marketable quantities have been confirmed. Amortized over 10 years.
- Mining exploration expenditures under Section 617(a) — costs of determining whether a mineral deposit exists, and its location, size, or quality. Amortized over 10 years.
Each of these costs would otherwise be immediately deductible under its own Code section. The 59(e) election overrides that default and replaces it with the ratable write-off above. A taxpayer who elects to amortize $100,000 in mining exploration costs, for example, deducts $10,000 per year for ten years.
Why Anyone Would Choose a Slower Deduction
Cutting AMT Exposure
The original reason for the election is alternative minimum tax. Intangible drilling costs, mining exploration costs, and research costs, when deducted immediately, can trigger AMT adjustments or be treated as items of tax preference. That drives up alternative minimum taxable income and can push a taxpayer into owing AMT.
Section 59(e)(6) removes that problem. Any portion of a qualified expenditure covered by a 59(e) election is not treated as a tax preference item under Section 57(a), and the Section 56 AMT adjustments do not apply to it. Whatever you run through the election drops out of the AMT calculation. The price is a slower regular-tax deduction.
Smoothing Income and Preserving NOLs
The election also works as an income-smoothing tool. A business with a large one-off cost — a major drilling program, a spike in research spending — might generate a net operating loss if it deducts the whole amount at once. Spreading the deduction keeps more taxable income in the current year, which can help absorb existing NOL carryforwards, stay under income thresholds, or avoid producing losses that might go unused. Because the election can be made on only part of an expenditure, you can fine-tune how much current-year income you keep.
How Research Expenditures Changed for 2025
The practical value of the election for research costs shifted with the One Big Beautiful Bill Act. That legislation created new Section 174A, which permanently restores immediate expensing for domestic research and experimental expenditures for tax years beginning after December 31, 2024.
For 2026, a taxpayer with domestic R&E costs has three federal options:
- Deduct the full amount immediately under Section 174A(a).
- Elect to amortize over at least 60 months under Section 174A(c). This election is more permanent in nature.
- Elect to amortize over 10 years under Section 59(e). This election is made on an annual basis, so it is more flexible than the 174A(c) route.
One boundary worth flagging: foreign R&E expenditures remain subject to mandatory 15-year amortization under Section 174 and cannot be expensed immediately. The 59(e) election does not apply to foreign research costs, because the statute limits the R&E category to domestic expenditures under Section 174A(a).
How to Make the Election
The election is made by attaching a statement to your income tax return for the year the qualified expenditures were paid or incurred. The statement must include your name, address, taxpayer identification number, and the type and amount of qualified expenditures you are electing to amortize. Amortization is also reported on Form 4562 (Depreciation and Amortization); research and experimental expenditures go on line 43.
The deadline is the due date of your original return, including extensions. If you miss it, the IRS can grant a reasonable extension under its relief procedures when you show you acted reasonably and in good faith and that granting relief would not harm the government’s interests.
Partial Elections
You do not have to elect the full amount. The statute allows the election for “any portion” of a qualified expenditure. Spent $500,000 on intangible drilling costs? You could elect to amortize $200,000 over 60 months and deduct the remaining $300,000 immediately. The election must specify an exact dollar figure. A formula or a percentage will not do.
Partnerships and S Corporations
For pass-throughs, the election is made separately by each partner or shareholder on their own share of the qualified expenditure. The entity does not elect at the entity level. Two partners in the same partnership can make opposite choices on their shares of the same drilling costs.
The Election Is Effectively Permanent
Once filed, the 59(e) election can be revoked only with the consent of the Commissioner. The Treasury Regulations say consent is granted only in “rare and unusual circumstances.” Treat the decision as final when you make it.
Basis and Recapture When You Sell
Any amount capitalized under Section 59(e) is chargeable to a capital account and becomes part of your adjusted basis in the property. Basis then rises by the capitalized amount and falls as you claim amortization deductions.
Selling property tied to those expenditures can trigger ordinary income recapture under Section 1254. The statute treats 59(e) amortization deductions allocable to Section 1254 property the same as deductions that would have been taken under Section 263(c), 616(a), or 617(a). The IRS treats those amortization amounts as “Section 1254 costs” on disposition.
On sale, the gain treated as ordinary income equals the lesser of the total Section 1254 costs associated with the property or the gain on the sale. If you elected to amortize $300,000 in drilling costs over 60 months and have claimed $200,000 in deductions by the time you sell, that $200,000 is exposed to ordinary income treatment instead of the capital gains rate. The recapture applies to dispositions of oil, gas, geothermal, and mining properties, which are the same assets that generate the qualified expenditures in the first place.