The Maryland Research and Development Tax Credit: An In-Depth Analysis of Wages for Qualified Services

Wages for qualified services represent the compensation paid to employees for direct involvement in, supervision of, or support for qualified research and development activities physically performed within the State of Maryland. These expenditures serve as the primary component of Maryland qualified research expenses, allowing businesses to claim a credit against state income tax based on their investment in technical labor.1

Statutory Framework and the Definition of Qualified Research Labor

The Maryland Research and Development (R&D) Tax Credit is a robust fiscal incentive established to stimulate private sector investment in innovation. Under Maryland Tax-General Code Section 10-721, the state provides a credit to individuals and corporations that incur “Maryland qualified research and development expenses”.1 The statutory framework is deeply intertwined with federal standards, as Maryland law expressly defines qualified research and development by cross-referencing Section 41 of the Internal Revenue Code (IRC).1 For a business to successfully claim the credit, it must first understand that the “Maryland qualified research and development” must be conducted within the borders of the state, a requirement that places significant emphasis on the physical location of the employees performing the services.1

The meaning of “wages for qualified services” is derived from the “in-house research expenses” category defined in IRC § 41(b)(2). In this context, wages constitute the W-2 compensation paid to an employee for performing qualified services.6 These services are categorized into three distinct roles: the actual conduct of research, the direct supervision of research, and the direct support of research.2 The Maryland Department of Commerce, which administers the certification of these credits, adheres strictly to these federal categories but adds a local nexus requirement.4 This means that while federal law may allow credits for research performed anywhere in the United States, Maryland only recognizes wages paid for services performed within its state lines.1

The economic rationale behind this incentive is to create a high-tech ecosystem where companies are encouraged to hire and retain skilled technical personnel in Maryland. Because labor often represents the single largest expense in a research project—frequently accounting for 70% or more of total project costs—the definition and calculation of wages for qualified services are the most critical factors in determining the final value of the tax credit.2

Table 1: Components of Maryland Qualified Research Expenses (QREs)

Source: 1

Local State Revenue Office Guidance on Wage Compensation

The Maryland Comptroller’s Office provides extensive guidance on what constitutes “wages” for the purpose of state tax credits. While the R&D credit specifically points to IRC § 41, the Comptroller’s interpretation of “wages” is often informed by Administrative Releases such as AR 33 and AR 34, which define wages for other employment-related credits.10 For the R&D credit, the Comptroller generally accepts Box 1 of an employee’s Form W-2 as the starting point for the wage calculation.7

Eligible Wage Components

Guided by federal standards, the Maryland state revenue office includes several types of compensation in the qualified wage pool. These include base salaries, hourly wages, and performance-based bonuses that are subject to federal withholding.2 Additionally, if an employee is compensated with non-qualified stock options, the “spread” (the difference between the fair market value and the grant price) is typically considered a wage at the time of exercise, provided it is included in the employee’s W-2 wages and subject to Maryland income tax withholding.13

However, Maryland guidance is clear that certain fringe benefits and employer-paid expenses are excluded from the R&D wage calculation. These exclusions are significant for businesses to avoid overstating their claims:

• Employer contributions to 401(k) plans or other qualified retirement vehicles.6
• Costs of providing health, life, or disability insurance.6
• Moving expenses or general travel reimbursements.7
• Employer-paid payroll taxes (Social Security, Medicare, and State Unemployment Insurance).6

The Requirement for Maryland-Sourced Income

A nuanced aspect of the Maryland state revenue guidance is the emphasis on the employee’s physical presence. For a wage to be “Maryland qualified,” it is not enough for the employer to be a Maryland entity. The Comptroller and the Department of Commerce evaluate where the services were actually performed.1 In the case of multi-state employees or remote workers, businesses must apportion wages based on the time spent physically working within Maryland borders.1 If a researcher resides in Virginia but works at a laboratory in Rockville, Maryland, their wages are eligible. Conversely, if a Maryland-resident software engineer works remotely from a home in Pennsylvania for a Baltimore-based firm, their wages are generally excluded from the Maryland R&D credit calculation.1

Detailed Analysis of Qualified Services

The eligibility of a wage is fundamentally tied to the nature of the “qualified services” performed. Maryland revenue officials follow a hierarchy of activity that must satisfy the federal “Four-Part Test” to ensure the labor is truly developmental rather than routine.14

Direct Conduct of Research

The first and most obvious category is the direct conduct of research. This includes the technical labor of scientists, engineers, and programmers who are solving technical uncertainties.2 For instance, a chemist in a Maryland pharmaceutical facility who is testing different molecular structures to determine their stability is performing a qualified service.6 The state revenue office requires that these activities be part of a “process of experimentation,” meaning there must be an evaluation of alternatives and a systematic trial-and-error approach.14

Direct Supervision of Research

Wages paid to managers who provide direct supervision of R&D activities are also eligible. However, the term “direct” is strictly interpreted.2 Guidance suggests that a supervisor must be involved in the technical day-to-day decisions of the research project.7 High-level executive management that only reviews financial reports or attends quarterly updates typically does not qualify for direct supervision. Only those managers who guide the technical direction and evaluate the technical results of the researchers’ experiments can have their wages included in the credit base.2

Direct Support of Research

The final category, direct support, covers personnel who facilitate the research process but do not necessarily perform the experiments themselves.2 Examples provided in administrative guidance include:

• A technician who maintains and cleans specialized laboratory equipment used for experimentation.7
• A computer operator who runs simulations or processes data generated during the R&D phase.7
• A machinist who fabricates a prototype designed by the engineering team.7

Personnel in general administrative roles, such as human resources or accounting, are specifically excluded, even if they are supporting the company’s broader mission.7 The state revenue office looks for a direct “link” between the support activity and the specific research project being claimed.7

Table 2: Qualifications for “Direct” Roles in Maryland R&D

Source: 2

The “Substantially All” Rule for Wage Inclusion

One of the most advantageous provisions of the R&D tax credit is the “Substantially All” rule, commonly known as the 80% rule.6 Maryland follows the federal regulation that allows a business to treat 100% of an employee’s wages as qualified research expenses if “substantially all”—defined as 80% or more—of the employee’s services constitute qualified services during the taxable year.6

Mechanics of the 80% Rule

If an employee’s time allocation to R&D activities is at least 80%, the entire W-2 Box 1 amount is eligible for the Maryland credit.6 If the employee’s R&D time falls below 80%, only the actual percentage of their wages spent on qualified activities can be claimed.16 For example, if a senior developer spends 82% of their time writing code for a new software architecture and 18% on general client support, the company may include 100% of their $120,000 salary in the QRE pool.16 However, if the developer spends only 75% of their time on research, the eligible amount is capped at $90,000 ($120,000 x 75%).16

This rule necessitates precise and contemporaneous time-tracking. Maryland state revenue guidance suggests that businesses should maintain project logs or time questionnaires to substantiate these percentages, especially for employees who straddle multiple departments.7

Table 3: Impact of the 80% Rule on Wage Claims

Source: 6

Application of the Credit to Maryland Law

The Maryland R&D tax credit is calculated as a percentage of the “excess” R&D expenses incurred during the year.1 To determine this excess, the law requires the calculation of a Maryland Base Amount.2

Calculating the Maryland Base Amount

The base amount is designed to reward businesses for increasing their R&D efforts over time. The formula for the Maryland Base Amount is as follows:

$$Maryland Base Amount = Maryland Base Percentage \times Average Maryland Gross Receipts$$

.2

The Maryland Base Percentage is calculated by dividing the total Maryland QREs (primarily wages) from the four preceding taxable years by the total Maryland gross receipts for those same years.1 For a new business in its first year of operation, the Maryland Base Amount is zero, which allows the firm to claim the credit on 100% of its first-year research wages.2

The Two Credit Components: Basic vs. Growth

Historically, Maryland offered two distinct credits:

1. The Basic R&D Credit: Equal to 3% of QREs that do not exceed the Maryland Base Amount.4
2. The Growth R&D Credit: Equal to 10% of QREs that exceed the Maryland Base Amount.1

Recent legislative updates have consolidated these incentives, but the core principle remains: the state incentivizes the incremental growth of research expenditures.2

Statutory Caps and the Proration Factor

One of the most critical aspects for Maryland businesses to understand is that the R&D credit is subject to an annual statewide cap.1 Currently, the Maryland Department of Commerce is authorized to approve a total of $12 million in credits per year.1 Because the program is consistently oversubscribed, the law requires that all approved credits be prorated.2

The Allocation Pool

The $12 million cap is divided into two specific pools:

• Small Business Pool: $3.5 million set-aside for businesses with net assets under $5 million.1
• Standard Business Pool: $8.5 million for larger corporations.1

If the total amount of credits applied for by small businesses exceeds $3.5 million, each small business will receive a proportionally reduced amount.1 The same mechanism applies to the standard pool. This proration ensures that all qualified applicants receive a portion of the credit, even if the state’s budget is exceeded.2 Furthermore, no single applicant may receive a credit exceeding $250,000 in a given year.1

Table 4: Maryland R&D Credit Caps and Limits

Source: 1

Small Business Refundability and the Asset Test

Maryland law provides a unique benefit for small businesses: the R&D tax credit is fully refundable.4 This means that if the certified credit amount exceeds the company’s state income tax liability, the business receives the difference as a refund check from the Comptroller.4 This is a vital source of non-dilutive capital for startups.3

Defining “Net Book Value Assets”

To qualify for the small business refund, a firm must demonstrate that its net book value assets are less than $5 million at the beginning or end of the taxable year.1 The state revenue office defines net book value assets as the total value of all assets (including intangibles like patents and software) minus accumulated depreciation and amortization.1 This calculation does not include liabilities.1

For a growing biotech firm, this asset test is often more favorable than a revenue test, as a company may have millions in equipment or intellectual property value that has been significantly depreciated, allowing it to remain under the $5 million threshold even while it scales.2

Example: Maryland BioTech Systems, Inc.

To illustrate how “wages for qualified services” translate into a tangible tax benefit, consider Maryland BioTech Systems, Inc., a small pharmaceutical development company located in Frederick, Maryland.

Scenario Background

In 2024, the company spent $800,000 on research and development activities. Their workforce consists of five researchers and one supervisor, all working full-time in Frederick.

Step 1: Identifying Qualified Wages

The company calculates its qualified wage pool based on W-2 Box 1 wages and the 80% rule:

• Principal Scientist: $160,000 (100% R&D time).
• Three Lab Researchers: $240,000 ($80k each, 90% R&D time).
• Support Tech: $50,000 (75% R&D time – qualified amount is $37,500).
• Technical Supervisor: $120,000 (100% direct supervision).

Total Maryland QRE Wages: $160,000 + $240,000 + $37,500 + $120,000 = $557,500.

Step 2: Base Amount Calculation

The company has been in business for five years and has a 5% fixed-base percentage. Their average Maryland gross receipts are $4,000,000.

$$Base Amount = 0.05 \times $4,000,000 = $200,000$$

Step 3: Credit Calculation

The “excess” R&D expenses are:

$$$557,500 – $200,000 = $357,500$$The tentative credit is 10% of this excess:

$$0.10 \times $357,500 = $35,750$$

Step 4: Proration and Refund

If the small business pool is oversubscribed by 20%, the Department of Commerce will certify the credit at a prorated rate of 80%:

$$$35,750 \times 0.80 = $28,600$$

Since Maryland BioTech Systems is a small business with assets under $5M, they will receive this $28,600 as a check if they have no tax liability for the year.4

Administrative Procedures and Filing Requirements

The process for claiming the Maryland R&D tax credit is a multi-step journey that requires strict adherence to deadlines and documentation standards.1

The Application Phase

By November 15 of the calendar year following the tax year in which the expenses were incurred, the business must submit an online application to the Maryland Department of Commerce.1 This application must include:

• Full legal name and Federal Employee Identification Number (FEIN).9
• Total Maryland qualified R&D expenses and gross receipts for the prior four years.4
• The address of the Maryland facility where the research occurred.9
• For small businesses, a balance sheet proving net assets are below $5 million.2
• A copy of Federal Form 6765 (if the federal credit was also claimed).9

The Certification and Claim Phase

The Department of Commerce reviews the applications and issues a certification letter by February 15 of the subsequent year.2 Once the business receives this letter, it must:

1. File an amended Maryland income tax return for the year the expenses were incurred.1
2. Complete Maryland Form 500CR (Business Tax Credits).15
3. Attach the certification letter to the tax return.15

Pass-through entities (PTEs) such as S-corporations or LLCs must pass the credit through to their members using Schedule K-1 (Form 510).21 It is critical that members provide the PTE’s FEIN on their individual returns to ensure the credit is not disallowed by the Comptroller.22

Audit and Compliance Considerations

Maryland state revenue officials have the authority to audit R&D tax credit claims to ensure that the reported “wages for qualified services” are accurate and supportable.2 Audit guidance highlights several areas of scrutiny:

Substantiation of Time

The most common reason for credit adjustments is a lack of contemporaneous time records.7 While the law does not strictly mandate a specific time-tracking software, it does require “substantial evidence” that the employee spent the claimed amount of time on R&D.6 State auditors look for project logs, meeting minutes, technical reports, and emails that corroborate the employee’s involvement in the developmental process.7

Box 1 Reconciliation

Auditors will reconcile the claimed wages against the company’s quarterly payroll filings and W-2 forms.7 Any discrepancy between the Box 1 wages reported to the IRS and the wages claimed on the R&D application can trigger an audit. Furthermore, if a business incorrectly includes employer-paid benefits or payroll taxes in its R&D wage pool, the entire claim may be subject to recalculation.6

The Maryland Location Test

In the event of an audit, the burden of proof is on the taxpayer to show that the research was performed in Maryland.1 For companies with employees who split time between Maryland and other jurisdictions, auditors may request badge swipes, travel records, or residential address verification to ensure the “Maryland qualified” requirement is met.1

Recent Legislative Trends and Future Outlook

The Maryland R&D tax credit landscape is influenced by broader shifts in federal and state tax policy. Understanding these trends is essential for long-term strategic planning.

Federal Conformity and Decoupling

Maryland generally conforms to federal tax law changes on a “rolling” basis, meaning it automatically adopts federal IRC amendments.23 However, the state has a history of “decoupling” from federal provisions that negatively impact state revenue.23 For instance, following the 2017 Tax Cuts and Jobs Act (TCJA), which required the amortization of R&D expenses, Maryland initially conformed to the federal treatment.24

In 2025, the “One Big Beautiful Bill Act” (OBBBA) was signed into law at the federal level, restoring the ability to immediately expense domestic research costs.24 While this is a boon for federal filers, the Maryland Comptroller indicated that the state would decouple from this full expensing provision for the 2025 tax year to avoid a significant revenue loss.23 This means Maryland businesses must still amortize their R&D costs for state purposes in 2025, even if they deduct them in full on their federal returns.23

Program Expiration and Extensions

The Maryland R&D tax credit is currently set to expire on June 30, 2027.1 While the Maryland General Assembly has historically extended the program every few years, its future is dependent on continued economic evaluation.1 The Department of Legislative Services (DLS) conducts periodic reevaluations to determine if the credit is effectively meeting its goals of fostering innovation and creating jobs.27

Conclusion

The meaning of “wages for qualified services” in Maryland is a synthesis of federal precision and state-specific geographic mandates. By rewarding the investment in technical labor, Maryland provides a powerful mechanism for businesses to offset the high costs of innovation. For small businesses, the refundability of this credit serves as a critical financial lifeline, while for larger corporations, the ability to carry forward credits provides a long-term reduction in tax liability. However, the benefits of the credit are inextricably linked to the quality of the company’s record-keeping and its ability to prove that its research activities—and the employees performing them—are firmly rooted in the state. As Maryland continues to navigate the complexities of federal tax decoupling and the pressures of statewide caps, businesses that master the nuances of qualified research labor will be best positioned to thrive in the state’s competitive technological landscape.

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