Form 6765 Project-Level Reporting: How to Complete the Redesigned R&D Credit Form in 2026

The IRS fundamentally redesigned Form 6765 — the Credit for Increasing Research Activities — for tax years ending on or after January 10, 2025. Two new sections, E and F, require taxpayers to identify individual business components and report project-level data that the IRS will use to verify the four-part qualification test (IRC §41(d)) without launching a full examination. For CPAs whose clients claim the R&D credit, the old approach of aggregating qualified research expenses into a single credit calculation is no longer sufficient. Contemporaneous documentation organized around discrete business components must exist before the return is filed — not reconstructed after an inquiry arrives.

This guide walks through each section of the redesigned form, the documentation you need to assemble before you open the return, and the transition rules that determine how many business components your client must report.

Prerequisites

• Completed Form 6765 (January 2025 revision or later) and current instructions
• Client's qualified research expense (QRE) ledger broken down by project, business component, or initiative — not just by expense category
• HR records showing employee names, job titles, and estimated percentage of time devoted to qualified research activities for the tax year
• Contracts with third-party researchers and associated payments (for IRC §41(b)(3) contract research expenses)
• Prior-year Form 6765 if the client is using the Alternative Simplified Credit (ASC) method — needed to establish the base amount
• Documentation showing the four-part test is met for each business component you intend to include
• Confirmation of the client's entity type and controlled group composition, if applicable under IRC §41(f)

Step 1: Gather Business Component Documentation Before Opening the Form

The most important change in the redesigned Form 6765 is that it now requires reporting at the business component level. A business component is any product, process, computer software, technique, formula, or invention that the taxpayer holds for sale, lease, license, or use in its trade or business — as defined in IRC §41(d)(2)(B).

Before filling out a single line on the form, prepare a business component inventory for the tax year. For each component your client intends to include in the credit base:

1. Assign a descriptive name (used in Section E, Line 1)
2. Write a one-to-two sentence description of what the component is and what improvement or development was pursued
3. Document the information sought: what specific technical uncertainty the research was designed to resolve
4. Document the uncertainty itself: why the capability or method to achieve the desired result was not known or readily determinable at the outset
5. Document the process of experimentation: the systematic trial-and-error, modeling, simulation, or hypothesis-testing approach used — not just the conclusion

This documentation does not appear on the form itself, but it is the factual predicate for every answer in Section E. IRS examiners use Section E answers to identify which business components to probe — and they will ask for the underlying records. If the description in Section E does not match contemporaneous project documentation, the credit for that component is at risk.

Business component caps under transition rules (IRS Notice 2024-12 and Notice 2025-1):

First applicable tax year	Maximum business components to report in Section E
Tax year ending on or after Jan 10, 2025 (first year of required reporting)	5
Second required-reporting year	10
Third required-reporting year and after	Up to 50 (or all, if fewer than 50)

For most small and mid-size businesses, 5–10 components will cover the vast majority of QREs. Select the components that collectively account for the highest dollar value of qualified expenses.

Step 2: Complete Section A or B — Credit Calculation

The credit calculation itself is unchanged by the 2025 redesign. Complete Section A (Regular Research Credit) or Section B (Alternative Simplified Credit) as you did in prior years. Key points:

Section A — Regular Credit (20% rate):

• Compute base amount: fixed-base percentage × average annual gross receipts for the prior four years
• Fixed-base percentage is locked at the average ratio of QREs to gross receipts from 1984–1988 (or a startup formula for businesses that did not exist then)
• Credit = 20% × (current-year QREs − base amount)
• Minimum base amount is 50% of current-year QREs (IRC §41(c)(2))

Section B — Alternative Simplified Credit (14% rate):

• No historical gross receipts calculation required
• Base = 50% of average QREs for the three preceding years
• Credit = 14% × (current-year QREs − base)
• For startups without three prior years of QREs: credit = 6% of current-year QREs
• Once elected, ASC applies to all subsequent years — it cannot be changed without IRS consent

Most CPAs advise smaller businesses to use ASC for its simplicity. The regular method generally produces a higher credit only when fixed-base percentages are very low — typically early-stage businesses with modest historical R&D relative to gross receipts. Run both calculations if you are unsure which produces the better result for the first filing year.

Step 3: Complete Section D — Payroll Tax Election (Qualified Small Businesses Only)

If the client is a qualified small business (IRC §41(h)) — fewer than five years of gross receipts and current-year gross receipts under $5 million — it may elect to apply up to $500,000 of the credit against FICA payroll taxes instead of income tax liability.

The Inflation Reduction Act of 2022 doubled the annual cap from $250,000 to $500,000 for tax years beginning after December 31, 2022.

Section D election mechanics:

• Complete Lines 36–39 on Form 6765 to specify the elected amount
• The elected amount is then claimed on Form 941 (quarterly payroll tax return) after the income tax return is filed
• The election is irrevocable for the tax year once made
• The credit cannot exceed the employer's share of FICA taxes for the quarter it is applied against

Startups that cannot use the income tax credit — because they have no income tax liability — should always evaluate the payroll tax election. It is one of the few provisions that delivers real cash savings to pre-revenue or early-revenue businesses. See our guide to R&D Tax Credit (Section 41) for Small Businesses for the full four-part test and qualifying industry analysis.

Step 4: Complete New Section E — Business Component Information

Section E is the core addition to the 2025-revision form. For each business component you are reporting (subject to the caps in Step 1), complete the following fields:

Column (a) — Business Component Name: Use the internal project or product name. Be consistent with how this appears in the client's project management, time-tracking, or accounting system — discrepancies between the form and records are audit red flags.

Column (b) — Business Component Type: Select from the five categories in IRC §41(d)(2)(B): Product, Process, Computer Software, Technique, Formula, or Invention. Most manufacturing or product development clients choose "Product" or "Process." SaaS and software companies typically use "Computer Software" — though note that internal-use software faces the additional "high threshold of innovation" test under Treas. Reg. §1.41-4(c)(6).

Column (c) — Information Sought: Describe the specific technical question the research was attempting to answer. Example: "Whether a novel extrusion die geometry could reduce material waste by 15% without degrading tensile strength." This should match language in project kick-off documentation, engineering logs, or lab notebooks — not be drafted retroactively in response to the form.

Column (d) — Nature of Uncertainty: Describe why the answer to the technical question was not known or readily ascertainable. The uncertainty must be technological in nature (IRC §41(d)(1)(B)(i)) — cost uncertainty or market uncertainty alone does not qualify. Example: "The optimal die geometry and operating temperature range could not be determined from existing engineering literature; iterative physical testing was required."

Column (e) — Process of Experimentation: Describe the method used to evaluate alternatives. The IRS looks for a systematic approach — not trial-and-error without a hypothesis. Example: "Prototypes were fabricated using three candidate geometries; tensile testing per ASTM D638 was conducted on 20 samples per variant across three temperature settings; results were compared against the performance baseline before selecting the final design."

Practical tip for CPAs: Draft Section E entries collaboratively with the client's engineering or product development team — not the finance department. The technical staff best understand the uncertainty and process of experimentation in terms that satisfy the regulatory standard. Review for legal risk before filing; vague or inaccurate entries invite deeper scrutiny.

Step 5: Complete New Section F — Qualified Research Information

Section F collects employee and contractor data at the business component level. For each component reported in Section E, the form requires:

Employee information (Lines within Section F):

• Number of employees engaged in qualified research for the component
• Employee job categories (as defined in the instructions: research director, scientist/engineer, technician, support staff)
• Estimated total wages paid to each employee category for qualified research activities under the component

Contractor information:

• Whether qualified research was performed under contract
• Name and total contract research expenses paid for the component
• Confirmation that the contractor does not retain substantial rights to the research results (IRC §41(b)(3)(A)(ii) requirement)

Wage allocation approaches: The IRS accepts two methods for allocating wages to qualified activities:

1. Time-tracking method: Employees track actual hours on qualified vs. non-qualified activities; wages are allocated proportionally. This is the most defensible approach and should be the default for clients with mixed-function technical staff.

2. Project-based estimation: For employees who worked 80% or more of their time on a single qualified business component, 100% of wages may be allocated to that component without time records (based on the principle from Neonatology Associates, P.A. v. Commissioner, T.C. Memo 2000-410, and subsequent guidance). Employees below the 80% threshold require documented time estimates.

Implement time-tracking in the client's project management system before the tax year closes — retroactive reconstruction is both difficult and easily challenged.

Step 6: Apply the §280C Wage Reduction (or Make the Reduced-Credit Election)

Under IRC §280C(c), the regular deduction for qualified wages and supply costs must be reduced by the amount of the IRC §41 credit claimed. For most businesses, this means the effective benefit of the credit is slightly reduced by the lost deduction.

Alternative: the §280C(c)(2) election. If the client elects on a timely filed return (including extensions), they may take a reduced credit equal to the regular credit multiplied by (1 − highest corporate tax rate) — currently (1 − 0.21) = 79% of the full credit — while retaining the full wage deduction. For C-Corps, the election is generally neutral. For pass-through entities where the owner's marginal rate exceeds 21%, the election may produce a slightly worse outcome; run the numbers.

The election is made on a timely filed return and is irrevocable for the year. Indicate the election in the space provided in Section A or B of Form 6765.

§174A interaction: If the same wages and supplies underlying the credit were also expensed under the new IRC §174A (restored by OBBBA for 2025 and later), the §280C reduction still applies to the credit-related portion. The client can expense R&E costs under §174A and claim the §41 credit — but the deduction is reduced by the credit amount unless the §280C election is made. See the full discussion in our guide to Section 174A R&D Expensing.

Step 7: File and Retain Supporting Documentation

File Form 6765 with the taxpayer's income tax return (or amended return for prior-year claims). Key filing points:

• For C-Corps: attach to Form 1120
• For S-Corps and partnerships: the credit is a separately stated item passing through on Schedule K (Form 1120-S or 1065) — attach Form 6765 at the entity level
• For amended returns: use Form 1120-X, 1040-X, or superseding return as appropriate; follow the procedural rules in Rev. Proc. 2024-34 and IRS Notice 2025-1 for §174A retroactive elections, which interact with §41 claims

Documentation retention: The IRS requires records to be maintained for as long as they are material to administering the tax law — in practice, at least three years from the due date of the return (the general statute of limitations under IRC §6501(a)) and up to six years if there is a material understatement. For credits as large as §41 claims can be, retain:

• Project documentation for each business component: engineering logs, lab notebooks, design specs, test results
• Time records or allocation workpapers linking employee wages to each business component
• Contractor agreements confirming the business retains rights to results
• Base amount calculations and prior-year QRE workpapers (for ASC users, three years of prior data; for regular credit users, 1984–1988 historical data)
• Software development logs for computer software components, including version control history and sprint documentation

Inadequate documentation is the most common reason IRS examiners disallow §41 credits on examination. Our guide to IRS Audit Triggers and Defense covers documentation practices for business clients more broadly — the same principles apply with heightened stakes for credit claims.

Common Mistakes

Treating Section E as a summary exercise. Section E entries written from memory or reconstructed from invoices and W-2s do not satisfy the IRS's expectations. The form was designed to function as a disclosure document — entries that are inconsistent with contemporaneous project records create a factual conflict that survives even strong technical documentation.

Including internal-use software without applying the high threshold of innovation test. Software developed primarily for internal use faces an additional qualification hurdle under Treas. Reg. §1.41-4(c)(6): the software must be innovative, involve significant economic risk, and not be commercially available. Applying the standard four-part test without the additional IUS test overstates QREs and is a common examination target.

Allocating CEO and founder time at 100%. Many founders believe that because they spend all their time on "the product," 100% of their compensation qualifies. The IRS scrutinizes owner-level allocations carefully — particularly in service businesses. Allocation must be defensible on an activity-by-activity basis, not a role-level basis.

Missing the payroll tax election for eligible startups. Businesses with fewer than five years of gross receipts and under $5 million in revenue routinely leave the $500,000 payroll tax election unclaimed. Run this analysis before filing — the election cannot be made on an amended return.

Confusing the filing deadline for retroactive §174A claims with the §41 credit filing deadline. The statute of limitations for claiming a refund under §41 on an amended return follows standard IRC §6511 rules (generally three years from original filing or two years from payment of tax, whichever is later). Confirm which window applies before advising on retroactive credit claims.

FAQ

What is a "business component" for Form 6765 purposes?

A business component is any product, process, computer software, technique, formula, or invention that the taxpayer holds for sale, lease, license, or use in its trade or business (IRC §41(d)(2)(B)). It is the unit at which the four-part qualification test is applied. A single client may have dozens of business components in a tax year — for example, a software company's individual product features, modules, or platform upgrades. Section E now requires identification and description of the most significant components (up to the applicable cap).

When did the new Form 6765 Sections E and F become mandatory?

IRS Notice 2024-12 made the new Sections E and F mandatory for tax years ending on or after January 10, 2025. For the first two required-reporting years, transition relief caps the number of business components that must be reported in Section E at 5 and 10, respectively. Full reporting applies from the third year forward.

Can a CPA complete Section E without involvement from the client's technical team?

Not effectively. The information sought, nature of uncertainty, and process of experimentation fields in Section E require accurate technical characterization of the research activities. A CPA who drafts these entries without input from the engineers, scientists, or developers performing the work risks completing the form inaccurately — which creates audit exposure. Build a process that involves the technical team at the beginning of the tax year, not at filing time.

How does the new Section E change audit risk?

It lowers the bar for the IRS to open a targeted inquiry. Before the redesign, Form 6765 provided no project-level visibility — examiners had to request documentation to understand what research was conducted. Now, Section E tells the IRS exactly which business components are claimed, what information was sought, and how experimentation was conducted. Entries that don't hold up to scrutiny, or that conflict with the client's own project records, will draw inquiries on their face. Accurate, well-substantiated entries reduce audit risk compared to the prior form — but only if the documentation actually supports them.

What happens if a client claimed the §41 credit in prior years but doesn't have Section E-level documentation?

For prior years (before the new form requirements), the standard documentation rules apply and Section E is not retroactively required. Going forward, the client should implement contemporaneous project-level documentation as part of the credit qualification workflow. If the prior-year documentation is thin and the returns are still within the statute of limitations, assess whether amended returns are appropriate or whether the current documentation is sufficient to defend an exam.

How does the §41 credit interact with the §174A R&D expensing deduction?

They are separate and generally stackable. A client can both deduct qualified R&E expenditures under §174A and claim the §41 credit on the same spending. The §280C(c) adjustment reduces the wage and supply deduction by the amount of the credit — unless the client makes the reduced-credit election. See Section 174A R&D Expensing for the full interaction analysis.

Can partnerships and S-Corps claim the §41 credit?

Yes. The credit is computed at the entity level on Form 6765 and allocated to partners or shareholders as a separately stated item on Schedule K. Each owner then claims the credit on their individual or entity income tax return. Controlled group rules under IRC §41(f) may aggregate QREs and credit across commonly controlled entities — which can affect both the base amount calculation and the maximum credit available to each entity in the group.

Where can I find the updated Form 6765 and instructions?

The current Form 6765 (January 2025 revision) and its instructions are available at IRS.gov. The instructions include examples of how to complete Sections E and F and describe the business component caps under the transition rules.

Arvori helps CPAs identify client R&D credit opportunities and build sustainable documentation workflows. Learn more about how we support tax planning and compliance engagements.