Section 174A Catch-Up Election GovCon: 2026 Deadline

Two SBIR Phase II awardees carry $300,000 of unamortized 2022-2024 domestic R&D on their balance sheets at the end of TY2024. Same revenue. Same federal customer.

The Section 174A catch-up election GovCon firms now face has a hard deadline. P.L. 119-21, Section 70302 (informally known as the One Big Beautiful Bill Act) lets eligible small federal contractors recover unamortized 2022-2024 domestic R&D expenditures in a single tax year, but the election must be filed by the earlier of July 6, 2026 or the IRC §6511 refund statute of limitations for the affected return [Rev Proc 2025-28 §3.03]. Small business eligibility requires three-year average gross receipts at or below the inflation-adjusted IRC §448(c) threshold (Rev Proc 2024-40 for TY2025; Rev Proc 2025-32 for TY2026).

In April 2026, one files an amended return under Rev Proc 2025-28 and pulls the entire $300,000 forward into TY2025. The other reads a generic tax newsletter, decides to wait, and keeps amortizing on the original five-year schedule. By 2029, both have claimed the same deductions; only one held the working capital for four extra years.

The catch: no general-practice CPA is also fluent in FAR 31.205-18 and DCAA Schedule M-1 reconciliation. That gap is where the Section 174A election goes wrong for any contractor with audited indirect rates.

Most general-practice CPAs handling the §174A election will miss the FAR 31.205-18 step entirely. The §70302(f) method change lands on Schedule M-1 of your tax return and on CAM Chapter 6 reconciliation expectations for IR&D and B&P pool reporting. Amerifusion Bookkeeping recommends a CPA-DCAA review before the filing deadline so the reconciliation memo gets filed alongside the election, not after.

What P.L. 119-21, Section 70302 Actually Changed for Government Contractors

P.L. 119-21, Section 70302 (informally known as the One Big Beautiful Bill Act), signed into law on July 4, 2025, added a new IRC §174A. The new section permanently restores immediate expensing of domestic research and experimental costs for tax years beginning after December 31, 2024. Foreign R&D still amortizes over 15 years under the now-narrowed §174, which covers only foreign research after the P.L. 119-21 amendment.

Between 2022 and 2024, the Tax Cuts and Jobs Act forced federal contractors with R&D activity to capitalize and amortize those expenses over five years for domestic spend or fifteen years for foreign spend. For SBIR Phase II awardees and any small contractor running an IR&D pool, the rule trapped real cash on the balance sheet and raised effective tax rates for three years.

P.L. 119-21 §70302(a) reverses the domestic side prospectively. Section 70302(f) then opens two transition routes for taxpayers caught with capitalized 2022-2024 R&D: a small-business retroactive election back to 2022, and a recovery of unamortized R&D election for all taxpayers (treated as a cut-off basis accounting method change under OBBBA §70302(f)(2)).

Both routes require an active filing. Doing nothing keeps your 2022-2024 R&D on the original TCJA amortization schedule. The next two sections cover eligibility and the decision matrix; if you would rather outsource the analysis, our CPA-managed bookkeeping services include a Section 174A readiness review.

Are You Eligible? The Section 448(c) Small Business Test

Eligibility for the retroactive §174A election back to 2022 turns on the IRC §448(c) gross-receipts test. The base statutory threshold is $25 million, adjusted annually for inflation under §448(c)(4). For tax year 2025, the inflation-adjusted figure is reported in Rev Proc 2024-40; for tax year 2026, in Rev Proc 2025-32.

Three rules disqualify small federal contractors who otherwise meet the gross-receipts test:

• Aggregation. Affiliated entities under §52(a) or §52(b) common control count together. A holding company structure with two operating subsidiaries combines their receipts.
• The tax shelter trap. An entity qualifies as a “syndicate” under IRC §1256(e)(3)(B) if more than 35% of its losses are allocable to limited partners or limited entrepreneurs. A syndicate is a tax shelter under §461(i)(3)(B), and tax shelters are disqualified from the election.
• Calendar timing. Aggregation tests as of January 1, 2025 for calendar-year taxpayers.

If you exceed the threshold for tax year 2025, the retroactive route closes. You still qualify for the recovery-of-unamortized-amount election under OBBBA §70302(f)(2)(A) (100% in TY2025 or 50/50 split), but you cannot amend 2022-2024 returns to claim §174A treatment.

SBIR Phase II awardees with a commercial product in launch year often cross the §448(c) threshold for the first time precisely when their cumulative capitalized R&D is largest. Run the math before the calendar trips you.

The entity structure layer matters too. Pass-through entities flow the deduction to owners differently than C-corporations, which affects who actually captures the value. Read our tax entity structure for government contractors guide for the entity-level analysis.

Section 174A Catch-Up Election GovCon Decision Tree: Three Active Paths

Eligible small contractors choose between three active paths under Rev Proc 2025-28. The decision is irrevocable for any year already closed by IRC §6511. Run the math on all three before the filing window becomes the binding constraint.

Retroactive treatment forces retroactive §280C application [IRC §280C(c)(2)]. If you previously claimed the §41 R&D credit using the §280C reduced-credit election, you might need to recompute and amend Form 6765 for each affected year. Practitioners filing early Rev Proc 2025-28 elections have reported this as a common missed step.

The 50/50 split deserves attention when 2025 income is low. Splitting the deduction protects deduction value when net operating loss limits or §163(j) interest disallowance would otherwise strand the benefit. The full text is on irs.gov if you want the source language.

The GovCon-Only Problem: IR&D and B&P Pool Reconciliation

The §70302(f)(2) recovery-of-unamortized-amount election hits your tax return in TY2025 as a method change on cut-off basis. It does not change your books. Your incurred cost submission uses book numbers, so audited indirect rates should stay clean.

CAM Chapter 6 (Incurred Cost Audit Procedures) auditors reconcile book-to-tax mismatches on Schedule M-1, and a one-year R&D swing without explanation is a question they will raise during the next incurred cost audit.

This is where every generic §174A explainer stops short. FAR 31.205-18 governs IR&D and B&P pool allowability. FAR 31.205-41(b)(1) makes federal income taxes themselves unallowable (“Federal income and excess profits taxes”).

The R&D expense underlying both rules remains allowable when properly classified. Most general-practice CPAs do not know the distinction matters.

Three actions protect your indirect rates after a §174A election:

1. Document the method change on Schedule M-1 of Form 1120, Form 1120-S, or Form 1065. State the adjustment amount, identify it as a P.L. 119-21 §70302(f) method change, and reference Rev Proc 2025-28 in the supporting schedule. (Small-business retroactive elections use a modified §481(a) adjustment; the recovery-of-unamortized-amount paths use a cut-off basis — label it correctly for your path.)
2. Prepare a one-page reconciliation memo for the next ICS filing. The memo names the §70302(f) method change, ties book IR&D and B&P spend to the unchanged DCAA Schedule G amounts, and explains why audited rates do not move.
3. Re-baseline forward pricing if your provisional billing rates were set on prior tax-side IR&D treatment. The §174A election does not change book-side rates, but DCAA might request a forward-pricing rate proposal refresh during the next forward pricing review or floor check. Pull our provisional billing rates guide before the next quarterly reset.

For fully CAS-covered contractors, CAS 420 (48 CFR 9904.420) governs IR&D and B&P pool composition. The §70302(f) method change does not trigger a CAS 420 disclosure statement amendment because book treatment did not change. Document that conclusion in the same reconciliation memo so the auditor does not draw the opposite inference.

Cross-reference our ICS preparation checklist when assembling the supporting schedules. The official FAR 31.205-18 text sits on acquisition.gov for direct citation.

Filing Mechanics and Calendar Through July 6, 2026

Rev Proc 2025-28 §3.03 replaces Form 3115 with a statement-in-lieu titled FILED PURSUANT TO SECTION 3.03 OF REV. PROC. 2025-28. The statement attaches to the amended or original return filed for each applicable taxable year (2022, 2023, or 2024) in which the small business taxpayer paid or incurred domestic R&D. Calendar-year contractors who filed 2024 returns before September 15, 2025 may receive an automatic six-month extension to file a superseding return under Section 8 of Rev Proc 2025-28.

Under Rev Proc 2025-28 §3.03(2), the statement must include seven items:

1. Taxpayer name and taxpayer identification number.
2. A declaration that the taxpayer is not a tax shelter for its first taxable year beginning after December 31, 2024.
3. If applicable: a declaration that the taxpayer will make the §1.448-2(b)(2)(iii)(B) election to avoid tax shelter status for TY2025.
4. A declaration that the taxpayer meets the §448(c) gross receipts test (three-year average at or below $31M for TY2025; Rev Proc 2024-40 §3.31) for its first taxable year beginning after December 31, 2024.
5. Which election path the taxpayer is making: full deduction in the applicable year under §174A(a), or amortization over 60+ months under §174A(c).
6. If amortizing under §174A(c): the number of months selected (not less than 60) for the amortization period.
7. A declaration that the taxpayer will file amended returns (or AARs for partnerships subject to BBA) for all applicable taxable years in which it paid or incurred domestic R&D but filed returns before September 15, 2025. Missing this item invalidates the election for years not yet amended.

Three calendar checkpoints matter for calendar-year filers.

• 90 days out (April 7, 2026): Lock the path. Confirm §448(c) eligibility, run the recovery-of-unamortized-amount math under §70302(f)(2)(A), and identify §41 credit recomputation exposure under §280C(c)(2).
• 60 days out (May 7, 2026): Draft the §3.03 statement and the FAR reconciliation memo together. Schedule a CPA-DCAA consult if your prior ICS used capitalized §174 numbers.
• 30 days out (June 6, 2026): File. The earlier of July 6, 2026 or your §6511 statute of limitations is the hard stop.

These dates assume your §6511 window for tax year 2022 extends to July 6, 2026. Most entity types do not. S corporations and partnerships had March 15, 2023 original due dates. Their §6511 cutoff for 2022 was March 15, 2026, already closed. C corporations had April 15, 2026. Individual filers (sole proprietors on Schedule C) had April 18, 2026. If you have already passed your entity-specific §6511 date for 2022, July 6, 2026 remains the hard stop only for taxable years 2023 and 2024 (where §6511 has not yet run). Fiscal-year taxpayers face separate aggregation and §6511 timing. Recompute against your specific filing dates.

Frequently Asked Questions

Key Takeaways

• The Section 174A catch-up election deadline is July 6, 2026, but the IRC §6511 refund statute of limitations for tax year 2022 closes earlier for most entity types. S corporations and partnerships: March 15, 2026 (already closed). C corporations: April 15, 2026. Individual filers: April 18, 2026. The binding date is entity-specific; run the §6511 math before acting. [Rev Proc 2025-28 §3.03(3)]
• Eligible small contractors choose between three active paths: amend 2022-2024 retroactively (small-business only under IRC §448(c)), recover the unamortized amount 100% in TY2025 under OBBBA §70302(f)(2)(A), or split it 50/50 across TY2025 and TY2026 under the same provision. Note: the 100%/50/50 paths are cut-off basis method changes, not §481(a) adjustments [Rev Proc 2025-28 §2.06(1)(c)].
• The §70302(f) method change does not change book IR&D or B&P spending, so audited indirect rates stay intact. CAM Chapter 6 auditors in practice look for a Schedule M-1 reconciliation memo before the next ICS filing.
• Retroactive §174A election forces retroactive §280C application [IRC §280C(c)(2)]. If you claimed the reduced R&D credit before, you might amend Form 6765 for each affected year.
• The election uses a statement in lieu of Form 3115 titled FILED PURSUANT TO SECTION 3.03 OF REV. PROC. 2025-28, attached to the first return claiming §174A treatment.
• The tax shelter disqualification relies on IRC §1256(e)(3)(B) (35% loss-allocation syndicate definition) incorporated by §461(i)(3)(B), not §461(i)(3) standing alone.

The Section 174A election window closes once the earlier of July 6, 2026 or your §6511 anchor passes. If your firm capitalized domestic R&D under TCJA Section 174 between 2022 and 2024, book a Section 174A readiness call with our CPA-managed team for a 30-minute deadline review.