14.8 §174 Research & Experimental Expenditures
Key Takeaways
- OBBBA fully restored immediate expensing for DOMESTIC §174 R&E expenditures starting tax year 2025.
- Foreign R&E still capitalized and amortized over 15 years (no change).
- Catch-up election for 2022–2024 capitalized domestic R&E: deduct all unamortized balance in 2025, OR over 2 years (2025 and 2026).
- Software development costs are explicitly §174 R&E (TCJA codification, retained by OBBBA).
- Method change to adopt immediate expensing is automatic (Form 3115, no user fee).
- Small-business retroactive election: businesses with average gross receipts ≤ $31M (§448(c)) may also amend 2022–2024 returns to claim immediate expensing retroactively (OBBBA-specific relief).
Why This Matters for the Exam
§174 R&E treatment is one of the most prominent OBBBA changes. For Tax Year 2025, domestic research expenditures are once again immediately deductible — a return to the pre-TCJA regime. Foreign R&E remains on a 15-year capitalization schedule. The catch-up election for 2022–2024 deferred R&E is a high-yield testable mechanism.
Expect 2-3 questions on §174 for 2025.
§174 Treatment by Period
| Tax Year(s) | Domestic R&E | Foreign R&E |
|---|---|---|
| Pre-2022 (long history) | Immediate deduction (election) | Immediate deduction (election) |
| 2022–2024 (TCJA mandate) | 5-year straight-line amortization (mid-year convention) | 15-year amortization |
| 2025 forward (OBBBA permanent) | Immediate expensing | 15-year amortization (unchanged) |
OBBBA was signed July 4, 2025 and the §174 restoration is effective for tax years beginning after December 31, 2024, so it applies to the 2025 tax year in full.
What Qualifies as §174 R&E
| Includes | Excludes |
|---|---|
| Wages and supplies of R&D personnel | Routine product testing / quality control |
| Software development costs (codified TCJA, retained) | Market research / consumer surveys |
| Allocable overhead and rent | Land or depreciable property (separately recovered) |
| Contract research (taxpayer at risk) | Funded research (other party at risk) |
| Patent-related legal costs | Advertising / promotion |
Domestic vs. foreign is determined by where the research activity occurs, not where the result is used.
Catch-Up Election for 2022–2024 Unamortized Domestic R&E (Critical 2025 Provision)
Taxpayers that capitalized domestic R&E in 2022, 2023, and/or 2024 under the TCJA regime have a remaining unamortized balance at the start of 2025. OBBBA provides a choice:
| Catch-Up Option | Mechanics |
|---|---|
| Option A — Full deduction in 2025 | Deduct the entire remaining unamortized balance in the 2025 tax year |
| Option B — 2-year ratable | Deduct half in 2025 and half in 2026 |
The election is made on a timely-filed return (including extensions) for the first tax year beginning after December 31, 2024. It is implemented as an automatic-consent accounting method change (Form 3115, no user fee). Foreign R&E is not eligible for catch-up; it continues its 15-year amortization schedule on schedule.
Small-Business Retroactive Election (OBBBA-Specific)
Businesses meeting the §448(c) small-business gross-receipts test — $31M for 2025, applied on a look-back basis — may go further and amend their 2022, 2023, and 2024 returns to claim immediate expensing retroactively (treating those years as if the TCJA 5-year rule had never applied to them). This is a separate, taxpayer-favorable choice in addition to the catch-up election.
Worked Example — Catch-Up Election
Facts: Domestic software company spent $3,000,000 on domestic R&E in 2023 (capitalized under TCJA). Under the 5-year, mid-year convention, the company had been amortizing $600,000 per year (with half-year in 2023 of $300,000 and full $600,000 in 2024).
| Year | Amortization Taken (TCJA) |
|---|---|
| 2023 | $300,000 (half-year) |
| 2024 | $600,000 |
| Balance at start of 2025 | $2,100,000 |
Option A (full 2025 deduction): Deduct the entire $2,100,000 in 2025. No further §174 amortization for that pool.
Option B (split 2 years): Deduct $1,050,000 in 2025 and $1,050,000 in 2026.
Plus 2025 new spending: Whatever the company spends on new domestic R&E in 2025 is fully and immediately deductible under the restored §174 rule (no capitalization at all).
Form 3115 Implementation
Adopting the restored immediate-expensing method for 2025 is treated as a change in accounting method. The IRS designated the change as automatic-consent, so:
- File Form 3115 with the 2025 return, with a duplicate to the IRS Ogden office.
- No user fee.
- The §481(a) adjustment (the catch-up amount under Option A or Option B) is implemented through the choice above rather than the usual 4-year spread.
Interaction with Other Rules (2025)
| Rule | Interaction with restored §174 |
|---|---|
| Research credit (§41) | Still available; the credit-reducing rule of §280C(c) continues (taxpayer reduces deduction OR takes reduced credit) |
| UNICAP (§263A) | R&E remains EXCLUDED from UNICAP (no change) |
| §163(j) ATI | Domestic R&E expensed in 2025 reduces ATI directly (no amortization add-back, because there's no amortization) |
| Bonus depreciation | Independent regime (§168(k)) — not affected |
On the Exam
Expect 2-3 questions, typically:
- Treatment questions: "How is domestic R&E handled in 2025?" (Immediate expensing — OBBBA permanent.)
- Foreign vs. domestic: "Foreign R&E in 2025?" (Still 15-year amortization.)
- Catch-up questions: "How may a taxpayer treat unamortized 2022–2024 R&E in 2025?" (Full deduction in 2025 OR split over 2025–2026.)
The key is to remember: Domestic R&E = immediate expense (2025 forward, OBBBA permanent). Foreign R&E = 15-year amortization (unchanged). Catch-up for 2022–2024 = full 2025 OR 2025/2026 split. Form 3115 automatic (no fee). Small businesses (≤$31M) may also retroactively amend 2022–2024.
Under OBBBA, how are DOMESTIC §174 research and experimental expenditures treated for Tax Year 2025?
How are FOREIGN §174 R&E expenditures treated for Tax Year 2025?
Taxpayer has $2,100,000 of unamortized 2022–2024 domestic R&E remaining at the start of 2025. Which catch-up options does OBBBA provide?