Qualified Research Expenses: What Hardware Teams Can Claim
What counts as a qualified research expense, the four-part test explained for hardware teams, how much prototyping you can claim, and the records to keep.
February 21, 20195 min read

Written by Konstantin Dolgan, Ph.D., NPDP
Founder & CEO, Product Development Engineer
Published February 21, 2019Updated August 30, 2026
Most hardware teams already do qualifying R&D and never claim it. Prototyping, design iteration, firmware development, test rig building and DFM work routinely meet the IRS four-part test. A pre-revenue company can convert that spend into a payroll tax offset of up to $500,000 a year. This is a plain-language guide, not tax advice - confirm specifics with your CPA.

The four-part test in hardware terms
- Permitted purpose - the work improves the function, performance, reliability or quality of a product or process. A new enclosure that solves a thermal problem counts; a new colourway does not.
- Technological in nature - it relies on engineering, physical science or computer science. Mechanical, electrical and firmware work all qualify.
- Elimination of uncertainty - at the start you did not know whether the approach would work, or which of several approaches to use.
- Process of experimentation - you evaluated alternatives: prototypes, simulations, test builds, A/B of two circuit topologies.
What counts as a qualified expense
Category | Included | Excluded |
|---|---|---|
Wages | Engineers, designers, technicians, and the managers directly supervising them | General admin, sales, marketing |
Supplies | Prototype materials, PCB fab and assembly for test builds, 3D prints, test parts | Capital equipment, general lab furniture |
Contract research | 65% of payments to US-based design firms and labs doing qualified work | Foreign contractors, work you do not bear the risk on |
Cloud/computing | Rental of computing used for qualified development | General business software |
The startup payroll offset
Qualified small businesses - broadly, under $5 million in gross receipts for the year and no gross receipts more than five years back - can apply the credit against payroll taxes rather than income tax, up to $500,000 per year. That makes the credit real cash for a pre-revenue hardware company. The election is made on Form 6765 with the timely-filed return, and missing the deadline forfeits that year's payroll election.
What a claim is worth
Annual qualified spend | Typical federal credit (ASC method) | Notes |
|---|---|---|
$250,000 | $12,000-$16,000 | Small team, one product program |
$750,000 | $35,000-$48,000 | Full-time engineering plus contract design |
$2,000,000 | $95,000-$130,000 | Multiple programs, in-house test |
Records to keep
- Time tracking or a defensible allocation of engineering hours to specific projects.
- Project documentation showing the uncertainty and the alternatives evaluated - design reviews, test reports, revision histories.
- Invoices for prototype builds, PCB fabrication, lab testing and contract engineering.
- A short written narrative per project tying the work to the four-part test.
- Contracts with design firms showing you retained financial risk and rights to the results.
What counts, and what auditors disallow
Expense | Usually qualifies | Usually disallowed |
|---|---|---|
Engineer and technician wages | Time spent designing, building and testing prototypes | Time spent on marketing, sales support or routine production |
Supplies | Materials consumed in prototypes and test builds | Capital equipment, tooling that is depreciated, general overhead |
Contract research | 65% of payments to a US contractor doing qualified work at your risk | Work performed outside the United States, or fixed-price work you do not own |
Cloud computing | Compute used for development and simulation | General business IT and hosting of a live product |
Direct supervision and support | First-line management of qualified work | Executive administration, HR, accounting |
Contemporaneous records beat reconstruction
The credit is not lost because the work was unqualified; it is lost because nobody can prove what happened. Since 2022 an amended-return refund claim must identify the business components, the research activities performed, the individuals who performed them and the information each sought to discover.
That is very close to a project-level timesheet plus a short technical narrative. Teams that tag time to a project code at the moment they log it, keep design review notes, and hold onto failed test reports assemble a defensible file in a day.
Teams that reconstruct from memory a year later routinely surrender 30-50% of an otherwise valid claim during examination.
A documentation routine that survives an audit
- Define business components up front: one per product, process or software system being developed.
- Track time to those components weekly, even at a coarse percentage level, and freeze it at month end.
- Keep the failures. Rejected concepts and failed tests are the clearest evidence of technical uncertainty.
- Save design reviews, test protocols and CAD revision history with dates attached.
- Flag contractor agreements that show you retain rights and bear the risk of failure.
- Separate production support hours from development hours in the same system, so the split is not an estimate.
- Review the file with your CPA before filing, and again before any amended claim.
The payroll tax election for pre-revenue companies
A company with no tax liability can still monetise the credit.
Qualified small businesses, broadly those under five million dollars of gross receipts and within five years of their first receipts, may elect to apply the research credit against payroll taxes, with the cap raised to five hundred thousand dollars for tax years beginning after 2022.
The election is made on the timely filed original return, which is the detail that trips people up: miss the filing and the option is gone for that year.
Separately, research expenses must now be capitalised and amortised rather than deducted immediately, which changes cash planning even when the credit itself is unaffected. Both points are worth a conversation with a CPA before the return is filed rather than after.
- Check eligibility early against gross receipts and the five-year window.
- Make the election on a timely filed original return; amended returns do not rescue it.
- Coordinate with payroll so the offset is applied in the correct quarter.
- Plan for amortisation of research expenditures in the cash model, separate from the credit.
- Track state credits too; several states add a meaningful second claim.
- Keep the same documentation standard for the payroll election as for an income tax claim.
Key takeaways
Frequently asked questions
The research credit rewards documentation discipline as much as innovation. Define the business components, track time against them as the work happens, keep the failures, and understand which expenses qualify before the year closes rather than after.
Small companies with no tax liability should check the payroll offset election early, because it must be claimed on a timely filed original return. Involve a CPA who works with the credit regularly; the rules change and the difference between a defended claim and a surrendered one is usually recordkeeping.
Do startups qualify for the R&D tax credit?
Yes. Companies with under $5 million in gross receipts and no receipts more than five years prior can elect to apply up to $500,000 of credit against payroll taxes, so pre-revenue startups benefit even with no income tax liability.
Does prototyping qualify for the R&D tax credit?
Prototyping generally qualifies when it eliminates technical uncertainty through a process of experimentation. Materials, PCB builds and 3D prints consumed in that work are qualified supplies.
Can I claim work done by an outside design firm?
Yes, at 65% of the payment, provided the firm is US-based, you bear the financial risk of failure and you retain rights to the results. Contract terms decide this, so review them before the engagement.
How far back can I claim?
Income tax credits can generally be claimed on amended returns for the prior three tax years, but the payroll offset election must be made on a timely filed original return for that year.
This article is general information, not tax advice. Work with a CPA experienced in R&D credit studies before filing.
State credits and the amortization rule
The federal credit is the headline, but two other factors change what a claim is actually worth. Many states run their own research credits that stack on top of the federal one, and current federal rules require research expenditures to be capitalized and amortized rather than deducted immediately — which affects taxable income even when the credit itself is unchanged. Model both before assuming a number.
Factors that change the value of a claim
Factor | Effect on value | What to check |
|---|---|---|
State research credit | Can add meaningfully on top of federal | Whether your state has one and if it is refundable |
Amortization of research costs | Defers deductions over several years | Cash-flow impact in the claim year |
Payroll tax election | Turns credit into cash for pre-revenue firms | Gross receipts and eligibility limits |
Contractor work | Usually only a portion qualifies | Who bears the risk and holds the rights |
Funded research | Excluded if a customer pays and takes the risk | Contract language on risk and IP |
Foreign work | Generally excluded from the federal credit | Where the engineers physically worked |
The contract language point catches hardware shops repeatedly. If a customer pays for development on a fixed-price basis and you retain rights and risk, the work may qualify; if they bear the risk and own the results, it likely does not. Write contracts with that distinction in mind rather than discovering it at filing.
Before you file
- Check whether your state offers a stackable or refundable research credit.
- Confirm the location of every engineer whose time you are claiming.
- Review development contracts for risk and rights language.
- Model the amortization impact on cash taxes, not just the credit amount.
- Have a tax professional review the claim; documentation standards keep tightening.
This is general information, not tax advice. Confirm the current rules and your specific situation with a qualified tax professional.
Key takeaways
- State credits can materially increase the value of a federal claim.
- Amortization rules change cash impact even when the credit does not change.
- Contract risk and rights language decides whether customer-funded work qualifies.
Need engineering documentation that supports your R&D claim?
Talk to our teamWork with LA NPDT: if you are moving from here to execution, start with our product development consulting or talk to us about end-to-end product development.
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