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Financial Audits for Construction Companies
TAX & COMPLIANCE July 10, 2026 7 min read

R&D Tax Credits That Most Contractors Don't Claim

Construction contractors are eligible for the R&D tax credit — but most don't claim it. Here's what qualifies, how to document it, and how to claim it.

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By Viviana Ferj, CPA — 40 years as an accountant, 35 years in construction
R&D tax credit eligible construction activities

The Most Overlooked Tax Credit in Construction

The R&D Tax Credit (Research & Development) is one of the most powerful — and most overlooked — tax credits available to construction contractors. Many contractors assume that R&D is only for tech companies or manufacturers. But construction activities that involve innovation, experimentation, or technical uncertainty can qualify.

If you've ever:

  • Developed a new construction method or technique,
  • Improved a construction process to reduce costs,
  • Experimented with new materials or systems, or
  • Solved a technical problem on a project,

you may qualify for the R&D tax credit.

If you've ever said "I don't think that's been done before" — you might have an R&D credit.

What Qualifies as R&D in Construction

To qualify for the R&D tax credit, your activities must meet the Four-Part Test:

  • 1. Permitted purpose: The activity must create a new or improved product, process, or technique.
  • 2. Technical uncertainty: At the beginning of the activity, you didn't know if it would work — or how.
  • 3. Process of experimentation: You tested alternatives — through trial and error, simulation, or modeling.
  • 4. Technological in nature: The activity relies on engineering, science, or a hard science.
Four-Part R&D Test for construction contractors

Examples of Qualifying Construction Activities

  • Developing a new construction method: A new way to pour concrete, erect steel, or install a system.
  • Improving energy efficiency: Developing a building envelope or HVAC system that exceeds code requirements.
  • Using new materials: Testing the use of recycled or composite materials on a project.
  • Developing innovative structural systems: A new bracing system, foundation type, or seismic solution.
  • Solving a technical problem: Figuring out how to build on challenging soil, in a tight site, or under unusual constraints.
Innovative construction method eligible for R&D credit

How to Document Your R&D Activities

The key to claiming the R&D credit is documentation. The IRS requires detailed records of your activities:

  • Project records: Notes on what you were trying to accomplish and why.
  • Design documents: Drawings, specifications, and calculations.
  • Testing records: What you tested, how you tested it, and what you learned.
  • Time records: The time spent by personnel on qualified activities.
  • Cost records: The costs associated with the R&D activity.

Documentation doesn't need to be perfect — but it needs to exist. The IRS will look at your records if they audit the credit.

Documenting R&D activities for construction tax credit

How to Claim the R&D Credit

  • Identify qualified activities: Review your projects and identify activities that meet the Four-Part Test.
  • Calculate qualified research expenses: These include wages, supplies, and some contract research costs.
  • Complete the necessary forms: Form 6765 — Credit for Increasing Research Activities.
  • Amend prior-year returns: If you missed the credit in prior years, you can file amended returns.
  • Work with a specialist: R&D credits are complex. A specialist can help you identify eligible activities and maximize your credit.

How the R&D Credit Affects Your Bonding

Tax credits don't directly affect bonding capacity — but they do affect your bottom line. Every dollar of R&D credit is a dollar you don't pay in taxes — and that improves your financial position. A stronger financial position means stronger bonding capacity.

Claiming R&D tax credit for construction contractors

Frequently Asked Questions

Can I claim R&D credits for work on a regular commercial project?

Yes — if the work involved innovation or technical uncertainty. It doesn't have to be a "research" project.

What is the credit worth?

The R&D credit is up to 20% of qualified research expenses above a base amount. It can be significant for contractors who do innovative work.

How far back can I claim the credit?

You can file amended returns for the last three years — and in some cases, longer.

Do I need to be a large company to qualify?

No. Small and medium-sized contractors can also qualify for the R&D credit.

R&D Tax Credit Research and Development Construction R&D Tax Credits IRS Research Credit Construction Innovation

Are You Missing Out on the R&D Credit?

If you're not sure whether your activities qualify, let's talk — no strings attached.

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In Summary

The R&D tax credit is one of the most overlooked credits in construction — and it could be saving you thousands of dollars every year.

A company can build a strong balance sheet, maintain a clean WIP Schedule, and run profitable jobs — but if the R&D credit is ignored, money is left on the table. Contractors who identify their innovative activities, document them properly, and work with specialists to claim the credit are the same ones who strengthen their financial position and bonding capacity. And they avoid, project after project, the unpleasant surprise of paying more tax than they needed to.

Viviana Ferj
Viviana Ferj, CPA
General Manager of Construcciones Ferj, Chile
Founder of VFerj Profit Systems
Content Creator
CPA · Auditing Accountant

Specialist in financial audits for construction companies in the USA, focused on real profitability per job, WIP Schedules, multi-state tax exposure, and bonding capacity.

40
Years as Accountant
35
Years in Construction
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