The R&D Tax Credit (formally the 'Credit for Increasing Research Activities') is a federal income tax credit under IRC Section 41 (26 U.S.C. § 41) that offsets a portion of qualified research expenses (QREs) — including wages, contract research, and supplies used in qualifying R&D activities. See irs.gov/instructions/i6765 (Form 6765 instructions) and irs.gov/pub/irs-pdf/p535.pdf for qualification standards.
The R&D Tax Credit was made permanent by the Protecting Americans from Tax Hikes (PATH) Act of 2015 after operating as a temporary provision since 1981. The credit is available to businesses of all sizes — including startups — that conduct qualifying research within the United States. Qualified Research Activities (QRA) — the 4-part test (IRC § 41(d)): Research qualifies if it: (1) is technological in nature (relies on principles of physical, biological, computer, or engineering science); (2) has a permitted purpose (creating or improving a product, process, technique, invention, formula, or software for sale or use in the taxpayer's business); (3) involves uncertainty (technological uncertainty must exist at the outset); and (4) involves a process of experimentation (evaluating alternatives through modeling, simulation, trial and error, etc.). Qualified Research Expenses (QREs): - Wages for qualified research: wages paid to employees for qualified services (research, supervision, and support of qualifying activities). Payroll is typically 60-70% of a company's QREs. - Contract research: 65% of amounts paid to third-party contractors for qualified research (must be for activities the taxpayer retains risk and rights in). - Supplies: consumables used and consumed in the research process (not capital equipment). - Computer rental/cloud computing: costs for using computer time in qualifying research (the Tax Cuts and Jobs Act excluded cloud compute from some definitions; see IRS guidance at irs.gov). Credit calculation (two methods): *Regular credit:* 20% × (QREs - base amount). The base amount is complex to calculate — essentially a percentage of historical gross receipts. Most first-time claimants use the simplified alternative. *Alternative Simplified Credit (ASC):* 14% × (QREs - 50% of average QREs for the prior 3 years). The ASC is the most commonly used method — simpler to calculate with no gross receipts history requirement. Startup payroll tax offset: Startups with <$5M in gross receipts and under 5 years old may elect to apply the credit against payroll taxes (FICA employer share) — up to $500,000 per year (increased from $250K by the Inflation Reduction Act). This is one of the most valuable provisions for early-stage companies with no federal income tax liability. See irs.gov/instructions/i6765 for Form 6765 election details. TCJA change (amortization of R&E): The Tax Cuts and Jobs Act of 2017 changed the treatment of research and experimental expenditures under IRC § 174 — requiring domestic R&E to be amortized over 5 years (15 years for foreign R&E) beginning in 2022, rather than expensed immediately. This is separate from the Section 41 R&D Credit but affects many of the same businesses. Congress has debated reverting to immediate expensing. See irs.gov for current IRS guidance on § 174 amortization.
Many businesses that don't think of themselves as 'doing R&D' qualify. The 4-part test (technological, permitted purpose, uncertainty, experimentation) captures: software development, engineering design, manufacturing process improvement, formulation development, and prototype testing. Activities that generally do NOT qualify: routine data collection, funded research owned by a client, social sciences research, post-commercial reverse engineering, and quality control testing (as opposed to process development). See irs.gov/instructions/i6765 for Form 6765 and IRS Notice 2023-63 on software development guidance.
The Alternative Simplified Credit (ASC) equals 14% of QREs in excess of 50% of the prior 3-year average — effectively 7-14% of incremental QREs depending on your growth rate. For a company with $1M in QREs and minimal prior R&D activity, the credit approximates 7% of total QREs (~$70K). State R&D credits (available in ~40 states) add additional value — California's R&D credit is 15-24% of QREs. Combined federal + state credits can offset 15-25% of total qualifying wages and costs. See irs.gov/form6765 and your state tax authority for combined benefit calculations.
Yes. The R&D credit can generally be claimed on amended returns for open tax years — the standard federal statute of limitations is 3 years from the original return due date, 2 years from payment. For amended returns claiming over $2 million in additional credits, IRS procedures require contemporaneous documentation of QREs. Many businesses recover 3-4 years of missed credits through a look-back study — often resulting in $100K-$500K in cash refunds for mid-size manufacturers and software companies. Engage a tax professional specializing in R&D credits; see irs.gov/instructions/i6765.