R&D Tax Credits Texas: A Complete Guide for 2026

Developing new products or improving existing software in the Lone Star State is now highly profitable. Texas has overhauled its incentive program to reward local innovation with larger, more flexible payouts.

R&D tax credits Texas businesses can claim have changed under a major state-level reform. Effective January 1, 2026, Texas replaced its old Subchapter M rules with Subchapter T. Raising the standard franchise tax credit rate from 5% to 8.722% of qualified local research spending, according to the Texas Comptroller of Public Accounts. The new rules make the credit permanent and allow small businesses to receive cash refunds even if they owe zero franchise tax. To claim these credits, companies must conduct qualified research within Texas and track eligible expenses such as employee wages. Supply costs, and contract research fees on their state filing.

Every business owner looking to lower their state tax burden must understand how these recent updates affect their planning. To get the most out of these incentives, you need to know the basic mechanics first. Our guide explains What Are R&D Tax Credits and How Are They Changing in Texas? so your business can start saving today.

R&d Tax Credits Texas: What Are R&D Tax Credits and How Are They Changing in Texas?

The research and development (R&D) tax credit is a powerful government program. It rewards businesses that design, build, or improve products and processes. If your firm spends time and money solving technical problems, you may qualify. For years, the state of Texas offered two ways to save under Subchapter M of the tax code. You could take a franchise tax credit or a sales tax exemption. But a major shift has arrived for R&D tax credits for Texas businesses.

The New Subchapter T System

Texas has completely overhauled its R&D credit structure. On January 1, 2026, the state launched a new program called Subchapter T, which replaced the old Subchapter M credit. This change comes from Senate Bill 2206, which lawmakers signed in June 2025. This bill repealed the old R&D sales tax exemption because it was hard for the state to manage. In its place, the state built a permanent franchise tax credit system with much higher rates. You can verify these new rules on the Texas Comptroller website.

A Massive Rate Increase

The best news for business owners is the rate hike. Under the old rules, the basic credit rate was just 5% of your qualified research expenses. The new Subchapter T system increases this rate to 8.722%. This is a huge leap that makes Texas one of the most attractive states for innovation. If you partner with Texas public universities for your research, the rate is even higher. You can read the full text of these changes in the legislative analysis on the Texas Legislature website. The table below shows exactly how the rates have changed.

Credit Category	Old Rate (Subchapter M)	New Rate (Subchapter T)
Standard R&D Credit	5.000%	8.722%
University Partnerships	6.250%	10.903%

Why the 2026 Rules Matter

These updates do more than just offer more cash. Under the old law, the credit had a sunset date, which meant it could expire. The new law makes the credit permanent. Business owners can now plan their R&D investments years in advance. They do not have to worry about the program ending. Knowing how these changes affect your tax strategy is vital to keeping your business transaction ready. In the next section, we will cover who qualifies under the new rules.

Who Qualifies for R&D Tax Credits in Texas?

To claim the state tax credit, your business must first be a taxable entity. This includes corporations, limited liability companies, and partnerships. Your business must have qualified research expenses that come from work done in Texas. These state-level expenses are directly based on the amount you report on line 48 of IRS Form 6765. Any qualified costs must link to research activities that take place inside the state border.

The Texas Refundability Rules

Many early businesses do not owe any state franchise tax. Under the state rules, you may still get a cash refund for your research activities. There are clear rules for who can claim this cash refund. If your business has annual revenue of 2.65 million dollars or less, you qualify for this option. Pre-revenue ventures and businesses owned by veterans in their first five years are also eligible. Finally, you can request a cash refund if your calculated state tax before credits is less than 1,000 dollars. This refundable credit option helps young firms keep cash in their business.

The Sales Tax Exclusion Rule

You must watch out for one major rule when you plan your state tax strategy. Texas does not allow you to double-dip on state research incentives. Your business cannot claim both the franchise tax credit and a sales tax exemption for the same period. If your firm or any member of your combined group used the sales tax exemption under Tax Code Section 151.3182, you cannot claim the credit. This is a strict sales tax exclusion that requires careful planning. We help startups weigh these choices when planning for Texas R&D tax credit opportunities.

How to Calculate Your Texas R&D Tax Credit

Calculating your state-level credit requires looking at your qualifying Texas research expenditures (QREs). These are the research costs you spend within the state of Texas. Once you have these costs, you can use the multi-step calculation method to determine your tax savings. The state rules offer different rates depending on your business history and research partnerships.

Step 1: Identify Your Qualifying Texas Research Expenditures

To start, you must find your total qualified research expenses. Under state tax rules, these costs are based on the amount you report on line 48 of IRS Form 6765. To qualify for the state credit, you must isolate only the portion of those costs that come from research done within Texas. These costs include wages for research staff, supplies used during testing, and certain contract research costs.

Step 2: Choose the Correct Tax Credit Rate

The state of Texas provides three distinct credit rates. Your business will fall into one of these three brackets:

1. The Standard Rate (8.722%): This is the standard credit rate for businesses with a three-year history of research spending in the state. The credit equals 8.722% of your current year qualifying costs that exceed a base amount. This rate was raised from 5% to 8.722% under S.B. 2206 to make Texas more attractive for research projects.
2. The No-History Rate (4.361%): If your business has no three-year history of Texas research spending, you use the alternative calculation. In this case, your credit is 4.361% of your total current year qualifying costs.
3. The University Partnership Rate (10.903%): If you partner with a Texas public university or college for your research, your credit rate increases to 10.903% of the costs that exceed your base amount.

Step 3: Apply the Credit Limit

Once you calculate your credit, you must apply the franchise tax limit. For the portion of the credit that is not refundable, your tax savings cannot exceed 50% of your total state franchise tax liability for the year. Any unused credits can be carried forward to future tax years, allowing you to maximize your savings over time by leveraging R&D tax credits in Texas.

Step 4: Review a Simple Example

To see how these rules work in practice, let us look at a simple hypothetical business. Imagine a mid-market technology company with $500,000 in qualifying Texas research costs in 2026. This business has no prior history of research spending in the state. Because there is no historical base to calculate, the business uses the alternative rate of 4.361%.

To find the credit, multiply the total qualifying costs by the alternative rate: $500,000 multiplied by 4.361% equals a credit of $21,805. This business can use this credit to offset its franchise tax liability, keeping more capital in its operations.

What Activities Qualify as Qualified Research in Texas?

To claim the tax incentive, your activities must meet federal standards. Texas tax law conforms directly to the federal definition under Section 41 of the Internal Revenue Code. Your qualifying work must pass a strict four-part test to show it is indeed qualified research.

The Four-Part Federal Test

Every activity must satisfy four main rules. First, the work must build a new or improved product, process, or software. Second, you must aim to eliminate technical uncertainty about how to design or build it. Third, you must use a process of experimentation to evaluate different options. Finally, the research must rely on hard science, such as engineering, chemistry, biology, or computer science. Under state tax guidelines, these qualified research expenses must align with what you report on IRS Form 6765, but only for the work you perform directly inside the state of Texas.

Qualifying Projects for Texas Sectors

Many daily business tasks in major Texas sectors fit this four-part test. In the Austin and Dallas tech hubs, software development often qualifies when engineers build new tools or improve software speed. Texas manufacturers can qualify when they design new machinery, reduce process waste, or test stronger materials on the shop floor. In the Houston energy sector, teams can claim costs for building new oil and gas extraction technology. Even biotechnology firms in Houston and San Antonio qualify when they design medical devices or run trials. Startups and tech teams can often offset major development costs by exploring these Texas R&D tax credit opportunities.

What Does Not Qualify

Not all business costs can count toward the tax credit. Routine tasks do not qualify because they do not resolve technical uncertainty. You cannot claim market research, customer surveys, or routine data collection. Quality control testing, routine style changes, and general business management are also out. If your team is simply copying an existing product without solving a technical challenge, those costs will not qualify. If you need help sorting your qualifying activities from routine tasks, we can help you review your projects. Learn more about our firm's work by reading our guide to tax services in Dallas-Fort Worth.

What Documentation Do You Need to Claim the Credit?

Claiming R&D tax credits Texas businesses qualify for is a highly structured process. The state uses federal rules to define what counts as qualified research, meaning your recordkeeping must meet strict standards. You cannot simply estimate your costs or submit a lump-sum claim without clear, step-by-step proof.

Federal and State Tax Forms

Your claim begins with federal tax paperwork. The starting point for calculating your credit is line 48 of IRS Form 6765, which tracks your total qualified research expenses. Texas uses this federal number as the basis for its own credit, but you must isolate the costs tied directly to work done in the state.

Once you establish your federal basis, you must complete several Texas-specific franchise tax forms. These include the Long Form Franchise Tax Report (05-158-A and 05-158-B), the Credits Summary Schedule (05-181), and the Subchapter T Credits Schedule (05-182). If you seek a refundable credit, you must also file Form 05-183, while combined groups must submit Form 05-166 to account for affiliates.

Essential Records for Substantiation

Forms alone are not enough to secure your credit. If the state audits your filing, you must provide contemporaneous records that prove your team conducted qualified research. These records must connect your financial expenses to specific technical challenges and daily activities.

You should gather and organize three main types of evidence:

• Payroll records and time sheets showing the exact hours employees spent on research tasks.
• Project logs, engineering notebooks, and design blueprints that detail the technical goals and trial-and-error tests.
• Contracts and invoices for any third-party testing or software supplies used during the development process.

Meeting IRS Audit Standards

Because Texas aligns its credit rules with federal standards, your documents must withstand IRS-level scrutiny. You must show that your work met the federal four-part test for research activities. Keeping clean, organized records throughout the year is the best way to protect your savings and prevent costly delays during tax season.

Common Mistakes That Can Delay or Reduce Your R&D Tax Credit

Claiming R&D tax credits Texas businesses can use is an excellent way to lower your tax bill. However, simple errors on state filings often lead to audit delays, missed dollars, or complete rejections. To keep your cash flow moving and protect your credit value, you must know the common traps that catch many local companies.

The Sales Tax Exemption Conflict

One of the biggest errors under Texas law is trying to claim two incentives at the same time. Under Texas Tax Code Section 151.3182, you cannot double dip. You are not eligible to claim the franchise tax credit if you or any member of your combined group received a sales tax exemption on R&D purchases during the same period. If you try to claim both, the state will deny or delay your credit. You must evaluate which incentive gives your company the largest financial benefit before you file.

Under Documenting Your Qualified Expenses

Many businesses assume that standard financial logs are enough to support an R&D claim. In reality, you must prove a direct link between your research activities and your costs. Common errors include failing to keep real time project logs, missing employee time cards, or lacking detailed project descriptions. If you do not have clear records of who did the work, what they tested. And how it relates to your project, the state may reduce your qualifying expenses during an audit.

Incorrect Base Period Calculations

Your credit amount is based on your current expenses compared to a historical base amount. If your business does not have a three year history of research costs in Texas, you must use a reduced credit rate of 4.361 percent. Mistakenly using the full 8.722 percent rate without the required historical data is a major red flag for state tax reviewers. This error will trigger an immediate review and delay your tax savings.

Combined Group Reporting Errors

For businesses that operate as a combined group, consistency across state schedules is critical. File inconsistencies between Form 05-166 and Form 05-182 will stall your application. Each affiliate in your group must align their qualifying research costs and reporting dates exactly. Working with an expert team to coordinate these schedules helps you avoid costly filing delays. Learn more about protecting your cash flow by reviewing our guide on Texas R&D tax credit opportunities to align your files correctly.

Frequently Asked Questions

Does Texas have an R&D tax credit?

Yes. Under the new Subchapter T rules effective January 1, 2026, Texas offers a permanent state franchise tax credit. According to the Texas Comptroller, the credit rate has increased from 5% to 8.722% of qualified research expenses that exceed a base amount.

Who qualifies for R&D tax credits in Texas?

Texas businesses that perform qualified research within the state can qualify. This includes companies of all sizes, from tech startups to builders. To get the credit, a business must have qualified research expenses as defined by the federal tax code and reported on IRS Form 6765.

What can you claim R&D tax credits for?

You can claim three main types of expenses. These are wages paid to employees doing research, supplies used in testing, and a portion of contract research costs. Under the rules outlined by the Texas Comptroller, all of these qualified expenses must be directly linked to research conducted inside Texas.

What is the 80% rule for R&D credit?

The 80% rule is a federal standard that Texas also uses. If an employee spends at least 80% of their time on qualified research, you can claim 100% of their wages for the credit. If they spend less than 80%, you can only claim the actual percentage of wages spent on research.

Ready to Claim Your Texas R&D Tax Credit?

Delaying your tax planning means leaving valuable capital on the table while your competitors claim their share of these updated incentives. Partnering with an experienced CPA firm allows you to navigate the new state filing rules and claim your refund with confidence. Our team at Seamless helps you evaluate your qualified research costs, compile clean documentation, and maximize your state tax savings.

Ready to claim your tax savings? Schedule a free consultation with Seamless Advisors today to secure your Texas R&D tax credit.