A completed Form 6765 example centers on two choices and one detail schedule: pick either Section A (Regular Credit) or Section B (Alternative Simplified Credit), itemize your qualified research expenses in Section D at the bottom of the form, and let the totals flow up into whichever section you chose. The December 2024 revision of Form 6765 reorganized the line numbers and folded the reduced-credit election directly into the credit computation, so any walkthrough written before that revision will not match the form in front of you.
Before entering anything, confirm your research activities meet the Section 41 four-part test (permitted purpose, technological in nature, elimination of uncertainty, process of experimentation) applied separately to each business component.1Internal Revenue Service. Audit Techniques Guide: Credit for Increasing Research Activities – Qualified Research Activities Section D asks you to identify those components and total the associated expenses, so the eligibility analysis has to be done before you can fill in a single number.
What Goes into Your Qualified Research Expense Total
Section D asks for three expense categories, and each has its own rules for what counts.
Wages. Salaries and wages paid to employees who directly perform, directly supervise, or directly support qualified research. A lab scientist running experiments qualifies. The manager overseeing that team qualifies. A technician maintaining specialized research equipment can qualify for the portion of compensation tied to qualified activities. Because most employees split time between qualifying and non-qualifying work, you need time-tracking records that support the percentage you claim.
Supplies. Tangible materials used or consumed during qualified research: raw materials for prototypes, chemicals for testing, components consumed during experimentation. Land, improvements to land, and depreciable property are out. Materials that end up in a product you ship to customers are out as well; those are production costs.
Contract research. When you pay an outside party to conduct qualified research on your behalf, only 65% of the payment counts as a qualified research expense.2Office of the Law Revision Counsel. 26 U.S. Code 41 – Credit for Increasing Research Activities Two exceptions raise the inclusion rate: payments to a qualified research consortium count at 75%, and payments to eligible small businesses, universities, or federal labs for energy research count at 100%. You must retain substantial rights to the results, and the contract needs to say so. Enter only the qualifying portion in Section D; the haircut is applied there, not later.
Regular Credit or Alternative Simplified Credit
You complete one section, not both. Run the math both ways before deciding, because the choice can swing the credit meaningfully.
The Regular Credit equals 20% of current-year qualified research expenses that exceed a base amount.3Internal Revenue Service. Audit Techniques Guide: Credit for Increasing Research Activities – Research Credit Computation The base amount is your fixed-base percentage (the ratio of aggregate QREs to gross receipts during 1984–1988, capped at 16%) multiplied by average gross receipts over the four preceding tax years.2Office of the Law Revision Counsel. 26 U.S. Code 41 – Credit for Increasing Research Activities The 20% rate is attractive, but the lookback data requirement is punishing for companies without decades of clean records.
The Alternative Simplified Credit equals 14% of current-year QREs exceeding 50% of your average QREs for the three preceding tax years.2Office of the Law Revision Counsel. 26 U.S. Code 41 – Credit for Increasing Research Activities If you had no QREs in any of the three preceding years, you instead get a flat 6% of current-year QREs. Once elected, the ASC applies to that year and all future years, and you cannot revoke it without IRS consent.
Section D: The Expense Detail That Feeds Everything
Section D sits at the bottom of Form 6765, but you fill it out first. It’s where you itemize wages, supplies, and contract research across business components. The 65% (or 75%, or 100%) inclusion rate for contract research is applied here, so only the qualifying portion of contractor payments should appear.4Internal Revenue Service. Form 6765 – Credit for Increasing Research Activities
The total of your qualified research expenses lands on Line 48 of Section D. That single number is the input for whichever main section you’re completing: Line 5 in Section A, or Line 20 in Section B.
Section A Walkthrough: Regular Credit
Lines 1 through 4 capture specific amounts for energy research paid to eligible small businesses, universities, federal labs, and qualified research consortia. If you have none of those payments, leave these lines blank.
Line 5. Enter your total current-year qualified research expenses. This is Line 48 from Section D.4Internal Revenue Service. Form 6765 – Credit for Increasing Research Activities
Line 6. Your fixed-base percentage, capped at 16%. Startups without 1984–1988 history use the special start-up rules to assign a proxy percentage.
Line 7. Average annual gross receipts for the four preceding tax years.
Line 8. Line 7 multiplied by Line 6. This is your base amount.
Line 9. Line 5 minus Line 8. If the result is zero or negative, you have no Regular Credit for the year.
Line 10. 50% of Line 5. This is a floor built into the statute.
Line 11. The smaller of Line 9 or Line 10.
Line 12. Line 11 plus any energy research amounts from Lines 1 and 4.
Line 13. Your credit. If you are electing the reduced credit under Section 280C(c)(2), multiply Line 12 by 15.8%. If not, multiply by 20%. The 15.8% figure is 20% × 79%, so the reduced-credit arithmetic is built directly into the line rather than calculated separately.
Section B Walkthrough: Alternative Simplified Credit
Lines 14 through 19 handle energy research payments and their credit calculation. Most filers skip them.
Line 20. Total current-year qualified research expenses, again pulled from Line 48 of Section D.
Line 21. Total qualified research expenses for the three preceding tax years (a single sum, not three separate figures).
Line 22. Line 21 divided by 6. Dividing the three-year total by 6 gives you 50% of the three-year average in one step.
Line 23. Line 20 minus Line 22. If the result is zero or negative, the ASC produces no credit from this path.
Line 24. Line 23 multiplied by 14%. Special case: if you had no QREs in any of the three preceding years, skip Lines 22 and 23 and instead multiply Line 20 by 6% on Line 24.
Line 25. Line 24 plus any energy research credit from Line 19.
Line 26. Apply the Section 280C(c)(2) election here. If you are taking the reduced credit, multiply Line 25 by 79%. If not, carry over the full amount from Line 25.
The 280C Reduced-Credit Election
Section 280C(c)(1) requires that you reduce your otherwise deductible research expenses by the full amount of the credit you claim; you can’t deduct the same dollars and take the credit on them.5Office of the Law Revision Counsel. 26 U.S. Code 280C – Certain Expenses for Which Credits Are Allowable Section 280C(c)(2) offers an alternative: reduce the credit itself by the maximum corporate rate (currently 21%), and keep the full deduction. The net credit is 79% of the unreduced amount, which for many taxpayers produces a better overall result once the deduction’s value is considered.
The election is made on your timely filed return, including extensions, and is irrevocable for that year. On the current form, you make it by using the reduced-credit multiplier on Line 13 (Section A) or Line 26 (Section B) rather than by completing a separate section.
Where the Credit Goes After Form 6765
The final credit amount from Line 13 or Line 26 transfers to Form 3800, General Business Credit, and from there to your main return. C corporations attach Form 6765 to Form 1120. S corporations attach it to Form 1120-S and partnerships to Form 1065; in both cases, the credit passes through to owners on Schedule K-1 rather than being used at the entity level. Sole proprietors and individuals claim the credit through Form 3800 attached to Form 1040.
Payroll Tax Election for Qualifying Small Businesses
Early-stage companies with little or no income tax liability can elect on Form 6765 to apply up to $500,000 of the credit against payroll taxes instead of income taxes.6Internal Revenue Service. Qualified Small Business Payroll Tax Credit for Increasing Research Activities Eligibility requires gross receipts under $5 million in the current tax year and no gross receipts in any year before the five-year period ending with the current year. After filing the income tax return that makes the election, you claim the credit on Form 8974 attached to Form 941. It offsets the employer share of Social Security tax first, up to $250,000 per quarter, then employer Medicare tax, with any remainder carrying to the next quarter.7Internal Revenue Service. Instructions for Form 8974
Claiming the Credit on an Amended Return
If you missed the credit in a prior year, you can file an amended return: Form 1120-X for corporations,8Internal Revenue Service. About Form 1120-X Amended U.S. Corporation Income Tax Return Form 1040-X for individuals.9Internal Revenue Service. About Form 1040-X, Amended U.S. Individual Income Tax Return The deadline is the later of three years from the date you filed the original return or two years from the date you paid the tax.10Internal Revenue Service. 11Internal Revenue Service. Required Information for a Valid Research Credit Claim for Refund
- Every business component the credit relates to for that year.
- For each business component, all research activities performed.
- The individuals who performed each activity, by name or title.
- What each individual was trying to discover.
- Total qualified wages, supply expenses, and contract research expenses for the claim year.
Provide these in a written statement rather than a stack of documents. If you attach a supporting credit study, identify the exact pages that support each fact.