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R&D Tax Credit Compliance & Documentation Guide
A practical guide to understanding the federal R&D tax credit framework, documenting research activities and expenses, reviewing exclusions, organizing Form 6765 information, and preparing records for professional review.
This guide is educational and is not tax, legal, or accounting advice. R&D credit qualification depends on specific facts and circumstances, and filing decisions should be made with professional review.
01
Qualification Framework
Activities generally need to be evaluated under the applicable Section 41 framework rather than by industry label alone. The resources below address the four-part test, business components, and common qualification questions.
What Is Qualified Research?
What Is the Four-Part Test for the R&D Tax Credit?
What Is the Permitted Purpose Test for the R&D Tax Credit?
What Does "Technological in Nature" Mean for the R&D Tax Credit?
What Is Elimination of Uncertainty for the R&D Tax Credit?
What Is a Process of Experimentation for the R&D Tax Credit?
How to Identify Business Components for the R&D Tax Credit
Can Incremental Improvements Qualify for the R&D Tax Credit?
Technical Uncertainty vs. Business Uncertainty for the R&D Tax Credit
Technical Risk vs. Qualified Research: What Is the Difference?
Does R&D Have to Be New to the World?
02
Exclusions & Review Issues
Some activities may resemble development work but are specifically excluded or require closer factual review under Section 41. The resources below address common exclusions and borderline areas.
What Is Research After Commercial Production?
When Is Adapting an Existing Product Excluded From the R&D Tax Credit?
Duplication and Reverse Engineering Under the R&D Tax Credit
Does Research Outside the United States Count for the R&D Tax Credit?
What Is Funded Research for the R&D Tax Credit?
Does Quality Control Testing Count for the R&D Tax Credit?
Do Style, Taste, or Cosmetic Changes Count as R&D?
Internal-Use Software and the R&D Tax Credit
Data Collection vs. Experimentation for the R&D Tax Credit
Troubleshooting vs. Qualified Research: What Is the Difference?
Maintenance vs. R&D Process Improvement: What Is the Difference?
Does Certification Testing Count for the R&D Tax Credit?
Can Regulatory Compliance Testing Be Part of R&D?
Can Cost-Reduction Projects Qualify for the R&D Tax Credit?
How Should Projects With Both U.S. and Foreign Research Be Reviewed?
How to Review Contracts for Funded-Research Issues
03
Qualified Research Expenses
Identifying qualified research activity and identifying potentially includable costs are related but separate analyses. Not every cost in a category is a QRE, and allocations are often required where costs support both qualified research and other work.
Wages
Do Employee Wages Count for the R&D Tax Credit?
How Are Engineer Wages Treated for the R&D Tax Credit?
Can Technician Wages Count Toward the R&D Tax Credit?
Can Software Developer Wages Count Toward the R&D Tax Credit?
Can Manager Wages Count Toward the R&D Tax Credit?
Can Supervisor Wages Count Toward the R&D Tax Credit?
What Is Direct Supervision of Qualified Research?
What Is Direct Support of Qualified Research?
What Is the “Substantially All” Rule for R&D Wages?
Can Founder Wages Count Toward the R&D Tax Credit?
Can a Business Owner's Time Count Toward the R&D Tax Credit?
Contract Research
Do Contractor Costs Count for the R&D Tax Credit?
Can Consulting-Firm Research Costs Count Toward the Credit?
How Are Research Consortium Payments Treated for the R&D Tax Credit?
Can Third-Party Testing Lab Costs Count Toward the R&D Tax Credit?
Can Outside Engineering Firm Costs Count Toward the R&D Tax Credit?
What Are “Substantial Rights” in Funded Research?
Why Economic Risk Matters in Funded Research
Supplies & Other Costs
Do Supplies Count for the R&D Tax Credit?
Do Prototype Costs Count for the R&D Tax Credit?
Do Materials Count for the R&D Tax Credit?
Do Testing Costs Count for the R&D Tax Credit?
Do Tooling Costs Count for the R&D Tax Credit?
Do Equipment Costs Count for the R&D Tax Credit?
How Purchase Records Can Support R&D Expense Documentation
04
Documentation & Evidence
Documentation can help establish what business component was being developed or improved, what technical uncertainty existed, which alternatives were evaluated, what experimentation occurred, who performed or supported the work, what costs relate to the activity, and what happened during the project.
What Documentation Is Needed for the R&D Tax Credit?
What Is Contemporaneous R&D Documentation?
What Is an R&D Experiment Log?
How to Document Technical Uncertainty for the R&D Tax Credit
How to Document Alternatives Considered During R&D
How to Document Failed Prototypes and Experiments
How Engineering Drawings Can Support R&D Tax Credit Documentation
How Test Reports Can Support R&D Tax Credit Documentation
How Photos and Videos Can Support R&D Documentation
How Emails Can Support R&D Tax Credit Documentation
How Technical Meeting Notes Can Support R&D Documentation
How Source Control Can Support Software R&D Documentation
How Prototype Records Can Support R&D Tax Credit Documentation
How Lab Notes Can Support R&D Tax Credit Documentation
How Technical Specifications Can Support R&D Documentation
How to Build an R&D Experiment Timeline
How to Organize R&D Evidence Chronologically
How to Prepare an R&D Tax Credit Project Narrative
How to Build a Supporting-Document Index for R&D Review
No single record type is universally required in every case, and one document by itself does not establish qualification. What matters is whether the records, taken together, help substantiate the activities, costs, and business components involved.
05
Form 6765 & Business Components
Form 6765 reporting has become increasingly business-component focused. The specific lines and reporting requirements can change over time, so the current form and instructions are the authoritative reference for any given tax year.
What Is Form 6765?
Form 6765 Sections Explained: A Current Guide
How Project Documentation Supports Form 6765 Section G
What Employee Information Matters for Form 6765 Section G?
How to Build a Business Component List for Section G
How to Identify Business Components for the R&D Tax Credit
How to Organize Business Components for Form 6765
How to Build an R&D Business-Component Workpaper
06
Credit Calculation & Elections
The R&D credit may be computed under a regular credit method or an alternative simplified credit (ASC) method. The specific computation, base-period rules, and limitations are set out in Section 41 and the current instructions.
How Is the R&D Tax Credit Calculated?
Regular R&D Tax Credit Method: How the Calculation Works
Alternative Simplified Credit (ASC): How the R&D Credit Method Works
ASC vs. Regular R&D Tax Credit Method: What Is the Difference?
How the Regular R&D Credit Calculation Appears on Form 6765
How the ASC Calculation Works on Form 6765
What Is the Fixed-Base Percentage for the R&D Tax Credit?
What Is the Base Amount in the Regular R&D Tax Credit Calculation?
How Do Gross Receipts Affect the R&D Tax Credit Calculation?
How Do Qualified Research Expenses Feed Into the R&D Tax Credit Calculation?
Section 280C and the R&D Tax Credit Election Explained
What Is the R&D Payroll Tax Credit?
What Happens to an R&D Tax Credit You Cannot Use This Year?
How Do Controlled Groups Affect the R&D Tax Credit Calculation?
07
Business & Ownership Issues
Entity type does not by itself determine whether activities are qualified research. The resources below address entity structures, ownership considerations, and real-world business scenarios that may require closer review.
How Does the R&D Tax Credit Work for an LLC?
How Does the R&D Tax Credit Work for an S Corporation?
How Does the R&D Tax Credit Work for a Partnership?
How Does the R&D Tax Credit Work for Pass-Through Businesses?
How Can an R&D Tax Credit Flow Through Schedule K-1?
Can a Business Owner's Time Count Toward the R&D Tax Credit?
Can Founder Wages Count Toward the R&D Tax Credit?
Can Small Businesses Use the R&D Tax Credit?
Can a New Business Claim the R&D Tax Credit?
Can a Business With a Tax Loss Still Benefit From the R&D Tax Credit?
Does the R&D Tax Credit Reduce Taxes Owed?
Can a Company With Outsourced Manufacturing Have R&D Activities?
Can an Importer Perform Qualified Research in the United States?
Can a Distributor Have R&D Activities?
Can Private-Label Product Development Involve Qualified Research?
How Should R&D Activities Across Multiple U.S. Locations Be Reviewed?
How Should Projects With Both U.S. and Foreign Research Be Reviewed?
08
Preparing for CPA Review
The following workflow organizes the preparation process into practical steps, from identifying candidate projects through preparing workpapers for CPA or tax-professional review.
- Step 1. Identify candidate business components and projects.
- Step 2. Review activities against the qualification framework.
- Step 3. Review statutory exclusions and special issues.
- Step 4. Map employees, contractors, supplies, and costs.
- Step 5. Reconcile records to payroll and accounting information.
- Step 6. Organize technical evidence.
- Step 7. Review documentation gaps.
- Step 8. Prepare workpapers for CPA or tax-professional review.
What Should Be Reviewed Before Filing an R&D Tax Credit?
R&D Tax Credit Workpaper Checklist for CPAs
Technical Review vs. Tax Review for an R&D Credit
R&D Expense Reconciliation Checklist
How to Review Contracts for Funded-Research Issues
How to Review Projects for Foreign-Research Issues
R&D Tax Credit Exclusion Review Checklist
How to Perform an R&D Documentation Gap Review
How to Run a Year-End R&D Documentation Review
How to Prepare an R&D Tax Credit Project Narrative
How to Reconcile R&D Wage Expenses to Payroll Records
How to Reconcile R&D Tax Credit Expenses to the General Ledger
How to Reconcile Contract Research Expenses
How to Reconcile R&D Supplies to Accounting Records
R&D Ledger
Looking for a way to organize your R&D documentation?
R&D Ledger provides a structured workspace for organizing projects, technical documentation, costs, evidence, and records for professional review.