Base Payroll Expense

Base payroll expense is the inflation-adjusted total of wages paid by a taxpayer during the twelve-month period immediately preceding a claim for additional New Mexico research tax credits. It functions as the statutory floor used to determine whether a business has achieved the specific employment growth required to unlock deeper income tax offsets.

The New Mexico Technology Jobs and Research and Development Tax Credit Act, codified at NMSA 1978, §§ 7-9F-1 to 7-9F-13, represents a sophisticated legislative effort to transform the state’s economic landscape into a hub for high-technology innovation and specialized manufacturing. At the heart of this incentive program lies a dual-credit structure: a basic credit and an additional credit. While the basic credit is relatively straightforward, providing a percentage of qualified research expenditures (QREs) as an offset against gross receipts, compensating, or withholding taxes, the additional credit is designed to reward expansion. To access this second tier of benefits, which applies against personal or corporate income tax liabilities, the taxpayer must demonstrate a meaningful increase in their New Mexico-based workforce. This increase is measured against the base payroll expense, a metric that incorporates both current compensation levels and historical inflation adjustments to ensure that the state only incentivizes genuine, real-dollar job creation rather than inflationary wage increases or workforce stagnation.

The Statutory Architecture of Research Incentives in New Mexico

The evolution of the Technology Jobs and Research and Development Tax Credit reflects the changing priorities of the New Mexico Legislature over the past quarter-century. Originally created in 2000 as the Technology Jobs Tax Credit Act, the program was significantly overhauled in 2015 to include “Research and Development” in its title and to expand its applicability to a broader range of small businesses. This transition was not merely nominal; it increased the credit rates from four percent to five percent and introduced new mechanisms for refundability and geographical bonuses.

The primary purpose of the Act is stated clearly in the local state revenue office guidance: to provide a favorable tax climate for technology-based businesses engaging in research, development, and experimentation. By reducing the tax burden on both operational costs (via the basic credit) and profitability (via the additional credit), New Mexico seeks to promote increased employment and higher wages in specialized fields. The “base payroll expense” is the critical pivot point in this policy. Without a rigorous definition of what a company was already paying its employees, the state would be unable to measure whether the incentive was actually achieving its goal of “increased employment”.

The Dual-Credit System and the Role of Payroll

To understand base payroll expense, one must first understand where it fits within the two-tier credit system. The Technology Jobs and Research and Development Tax Credit is divided into two distinct components, each with its own eligibility criteria and tax application.

Credit Component	Statutory Rate	Tax Application	Primary Qualification
Basic Credit	5% (10% Rural)	Gross Receipts, Compensating, Withholding	Qualified Expenditures (QREs)
Additional Credit	5% (10% Rural)	Corporate or Personal Income Tax	Payroll Increase Over Base

The basic credit acts as a subsidy for the inputs of research—the materials, the equipment, and the direct labor costs incurred during experimentation. However, the additional credit is a reward for the output of research in the form of sustainable economic growth. The additional credit effectively doubles the value of the incentive, provided the taxpayer can meet the growth benchmarks defined by the relationship between their “annual payroll expense” and their “base payroll expense”.

Defining the Core Metrics: Annual vs. Base Payroll

The New Mexico Taxation and Revenue Department (TRD) provides precise technical definitions for the terms used in calculating credit eligibility. These definitions are found in both the statutes (NMSA) and the administrative code (NMAC), and they must be followed strictly to avoid denial of the credit during the mandatory pre-approval process.

Annual Payroll Expense

Annual payroll expense is the total wages paid or payable by the taxpayer to employees in New Mexico for the one-year period ending on the day the taxpayer applies for the additional credit. In most practical applications, this aligns with the current taxable year for which the credit is being claimed. It represents the “new” payroll level that will be compared against the historical baseline to determine if the $75,000 growth threshold per $1 million in QREs has been met.

Base Payroll Expense

Base payroll expense is defined as the wages paid or payable by the taxpayer for the one-year period ending exactly one year prior to the date the taxpayer applies for the additional credit. For example, if a taxpayer applies for a credit on December 31, 2024, the annual payroll expense is the compensation paid from January 1, 2024, to December 31, 2024. The base payroll expense would be the compensation paid from January 1, 2023, to December 31, 2023.

However, the base payroll expense is not a static historical number. It is a dynamic figure that must be adjusted for inflation to ensure the comparison is made in “real” dollars. The law requires that the base payroll expense be adjusted for any increase in the Consumer Price Index (CPI) for the United States for all items, as published by the United States Department of Labor.

The CPI Adjustment: A Mathematical Requirement

The inflation adjustment is perhaps the most overlooked aspect of the New Mexico R&D credit application. The inclusion of a CPI adjustment prevents a company from qualifying for the additional credit solely because they gave their existing staff a cost-of-living raise. To “increase” employment in the eyes of the law, a company must expand its payroll by more than the rate of inflation plus the statutory $75,000 threshold.

The adjustment formula used by the TRD is:

Base_Adjusted = Base_Actual × (CPI_Current / CPI_Prior)

Alternatively, it can be viewed as:

Base_Adjusted = Base_Actual × (1 + i)

where i represents the inflation rate determined by the U.S. Department of Labor for the period in question. The “current” CPI index used is the one published in the taxable year for which the additional credit is being claimed.

Strategic Implications of the CPI Adjustment

For businesses operating in high-inflation environments, the adjusted base payroll expense can significantly rise, making it more difficult to hit the required growth benchmarks. This makes it imperative for financial officers to track the CPI-U (Consumer Price Index for All Urban Consumers) throughout the year. If the adjusted base payroll rises by 4% due to inflation, and a company has a base payroll of $5,000,000, the “floor” for growth increases by $200,000 before the statutory $75,000 per million in QREs is even considered.

Qualified Facility and Qualified Expenditure Context

The payroll in question—both annual and base—cannot be the company’s total global or even total statewide payroll. The law specifies that the payroll must be associated with a “qualified facility”. This creates a geographical and functional tethering of the tax credit to specific locations in New Mexico.

Defining the Qualified Facility

A qualified facility is a physical location in New Mexico where qualified research is conducted. To meet the definition of qualified research, the activities performed at the facility must generally meet the federal four-part test under Internal Revenue Code Section 41:

• Permitted Purpose: The research must be for the purpose of discovering information that is technological in nature.
• Elimination of Uncertainty: The application of the research must be intended to be useful in the development of a new or improved business component.
• Process of Experimentation: Substantially all of the activities must constitute elements of a process of experimentation.
• Technological in Nature: The research must fundamentally rely on the principles of physical or biological science, engineering, or computer science.

The payroll growth must happen at this facility. If a company hires 50 new researchers in New Mexico but they are stationed at a facility that does not meet the “qualified” criteria, their wages cannot be used to meet the additional credit requirements.

Qualified Expenditures (QREs) as the Multiplier

The amount of payroll growth required is not a fixed number for all companies; it is a variable tied to the scale of the research being performed. The statute mandates a $75,000 increase in annual payroll expense for every $1,000,000 in qualified expenditures claimed. Qualified expenditures include a wide range of costs:

• In-State Payroll: Wages for employees performing or supporting research.
• Equipment and Materials: Machinery, software, upgrades, and test materials used in research.
• External Costs: Payments to New Mexico-based consultants and contractors.
• Facility Costs: Rent, improvements, and operations for the facility.

Crucially, the “Qualified Expenditures” provide the context for the “Base Payroll Expense.” If a company claims $4 million in QREs, they must prove their annual payroll grew by at least $300,000 ($75,000 x 4) over their adjusted base payroll.

Eligible Personnel and the Definition of “Wages”

One of the most frequent points of confusion for taxpayers is determining which employees’ salaries can be included in the annual and base payroll calculations. New Mexico provides specific guidance that differs slightly from federal R&D credit norms.

Inclusion of Administrative Personnel

Under N.M. Admin. Code § 3.13.5.8, a taxpayer calculating payroll expenses for the additional credit may include the total wages paid to all employees at a qualified New Mexico facility. This is a generous provision that significantly aids taxpayers in meeting the growth hurdle.

Unlike federal credits, which strictly require that wages be for “qualified services” (doing research, supervising research, or supporting research), the New Mexico additional credit payroll calculation can include:

• Dedicated research scientists and engineers.
• Lab technicians and testing staff.
• Administrative personnel at the facility, such as HR, accounting, or janitorial staff, provided their place of employment is the qualified facility.

By including administrative personnel in the payroll total, the state makes it easier for a growing company to reach the $75,000 per $1 million threshold. Every hire at a qualified facility, regardless of their role, contributes to the expansion of the “Annual Payroll Expense” and helps satisfy the eligibility requirement for the additional credit.

The Box 1 W-2 Standard

To ensure administrative simplicity and clarity, the Taxation and Revenue Department aligns its definition of “wages” with the federal Internal Revenue Code. Specifically, “wages” used to meet the eligibility requirements of the Act are the same as those included or to be included in Box 1 of the annual statement of withholding (Form W-2).

This reliance on Box 1 creates a clear boundary for what is excluded. Taxpayers may not include:

• Employer-paid health insurance premiums.
• Employer contributions to 401(k) or other retirement plans.
• The value of employee stock options (unless they are included in Box 1 as taxable compensation).
• Non-taxable fringe benefits.

Compensation Type	Included in Payroll Calculation?	Regulatory Basis
Salary / Hourly Wages	Yes	Box 1 W-2
Bonuses	Yes	Box 1 W-2
Administrative Staff Wages	Yes	NMAC 3.13.5.8
Health Insurance Premiums	No	Excluded from W-2 Box 1
Retirement Contributions	No	Excluded from W-2 Box 1
Stock Options (Non-taxable)	No	NMAC 3.13.5.8

The Rural Bonus and Economic Geography

New Mexico uses the Technology Jobs and R&D Tax Credit as a tool for regional equity. The law provides a “Rural Bonus” that effectively doubles both the basic and additional credits for facilities located in rural areas.

Defining Rural Areas

For the purposes of this credit, a rural area is generally defined as any location outside of New Mexico’s most populous counties. Specifically, the following are not considered rural:

• Bernalillo County.
• Doña Ana County.
• Santa Fe County.
• Economically distressed areas as designated by the TRD (which may occasionally include pockets within urban counties, though the general rule applies to the rural counties).

The Financial Impact of Geography

In a rural area, the total tax incentive can reach 20% of qualified expenditures (10% basic + 10% additional). This makes the “base payroll expense” even more significant in rural contexts. While the growth threshold ($75,000 per $1 million in QREs) remains the same in rural and urban areas, the payoff for meeting that threshold is twice as high in a rural county. This high reward-to-effort ratio is intended to lure technology companies away from the Albuquerque-Santa Fe corridor and into communities like Carlsbad, Gallup, or Las Vegas, NM.

Small Business Provisions and Refundability

The New Mexico legislature recognized that for early-stage technology companies, tax credits that only offset income tax are often useless because the companies are not yet profitable. To address this, the Act provides special refundability provisions for “qualified research and development small businesses”.

Small Business Definition

A business qualifies for the small business enhancements if it meets two specific criteria in the tax year for which the additional credit is claimed:

1. Employment Limit: The business employed no more than 50 employees.
2. Expenditure Limit: The business had total qualified expenditures of no more than $5,000,000.

Tiers of Refundability

For these small businesses, if the additional credit exceeds their income tax liability, the excess is not merely carried forward; it is refunded to the taxpayer. The amount of the refund depends on the total volume of QREs:

Total QREs	Refund Percentage
Under $3,000,000	100% of excess credit
$3,000,000 to $3,999,999	66.6% (Two-Thirds) of excess credit
$4,000,000 to $5,000,000	33.3% (One-Third) of excess credit

This tiered structure is designed to provide the most liquidity to the smallest firms while phasing out the refundability as companies grow toward the $5 million expenditure cap. For a startup, this can mean a direct cash infusion of up to $150,000 (5% of $3 million) or even $300,000 if located in a rural area.

Administrative Compliance: The Application Process

Securing the Technology Jobs and R&D Tax Credit is a multi-step process that involves both pre-approval and final claiming. The “Base Payroll Expense” must be documented during the pre-approval phase, making accurate record-keeping essential from the very beginning of the research project.

Form RPD-41385: The Gateway Application

To claim either the basic or the additional credit, a taxpayer must first submit Form RPD-41385, Application for Technology Jobs and Research and Development Tax Credit. This form requires the taxpayer to detail their qualified expenditures and, critically, their payroll data.

When applying for the additional credit, the taxpayer must attach a “payroll expense summary”. This summary must reflect:

1. The annual payroll expense for the current period.
2. The base payroll expense from the prior period.
3. The calculation of the CPI adjustment.
4. Verification that the $75,000 growth benchmark has been met.

The 45-Day Estimation Rule

In many cases, a company might apply for the credit before their final annual payroll data is fully processed (for example, if they apply immediately at the close of a quarter). The TRD allows for the use of estimated annual and base payroll figures on the initial application.

However, the state revenue office guidance is strict: the taxpayer must provide the actual annual and base payroll expense amounts within 45 days from the end of the calendar quarter in which the claim was applied for. If the claimant fails to provide the actual numbers within this window, the TRD may withhold approval or deny the claim entirely.

Annual Reporting and Post-Approval Audits

Approval of Form RPD-41385 is not the end of the process. Taxpayers who receive the credit must file annual reports with the TRD by June 30 of the following year, and for each of the two succeeding years. These reports provide the state with longitudinal data on whether the promised jobs were maintained.

Furthermore, the TRD retains the right to conduct post-approval audits. During these audits, the department focuses heavily on payroll verification. They will often request W-3 forms, quarterly unemployment insurance filings, and facility-specific employee lists to ensure the “Annual Payroll Expense” was not artificially inflated and that the “Base Payroll Expense” correctly included all historical costs.

Complex Scenarios: Mergers and Acquisitions

The treatment of payroll during business reorganizations is a high-stakes area of the law. Without specific anti-gaming provisions, a company could appear to create “new” jobs simply by acquiring another firm and absorbing its staff.

To prevent this, NMSA 1978, § 7-9F-3(C) specifies that in a tax year where a taxpayer has been part of a business merger, acquisition, or other change in organization, the “base payroll expense” must include the payroll expense of all entities included in the reorganization.

Example of a Merger Scenario

Consider Company Alpha, which acquires Company Beta.

• Company Alpha 2023 Payroll: $2,000,000
• Company Beta 2023 Payroll: $1,000,000
• Combined Entity 2024 Payroll: $3,100,000

If Company Alpha only used its own 2023 payroll as the base ($2M), it would appear to have grown by $1.1 million. However, the law requires that the base payroll include Beta’s historical payroll as well.

Base Payroll = $2,000,000 + $1,000,000 = $3,000,000

Adjusting this $3,000,000 base for CPI (assume 3%) gives an adjusted base of $3,090,000.

The actual growth is therefore only $10,000 ($3.1M – $3.09M).

In this scenario, Company Alpha would likely fail to meet the $75,000 growth requirement for the additional credit, despite having “more” employees than it did the previous year. This ensures that the credit is only awarded for net new job creation in the New Mexico economy.

Comprehensive Example: The “High-Desert Tech” Case Study

To illustrate the full application of the base payroll expense rules, let us examine a hypothetical company, High-Desert Tech (HDT), located in a rural area of New Mexico.

2023: The Base Year

In 2023, HDT operated a research facility in Socorro County (rural). It had 10 employees with a total Box 1 W-2 payroll of $800,000. This is the Raw Base Payroll Expense.

2024: The Expenditure and Growth Year

In 2024, HDT undertook a major software development project.

• Qualified Expenditures (QREs): $2,000,000 (includes lab equipment, NM contractors, and software licenses).
• Hiring Activity: HDT hired 5 new software engineers and 1 office manager at the facility.
• Annual Payroll Expense (2024): $1,150,000.

Step 1: Calculate Adjusted Base Payroll Expense

The raw base of $800,000 must be adjusted for inflation. We will assume the 2024 CPI adjustment factor published by the TRD is 1.04 (4% inflation).

Adjusted Base Payroll = $800,000 × 1.04 = $832,000

Step 2: Determine Actual Payroll Growth

Growth = Annual Payroll (2024) – Adjusted Base Payroll

Growth = $1,150,000 – $832,000 = $318,000

Step 3: Check Eligibility Benchmark

HDT is claiming $2,000,000 in QREs. The required growth is $75,000 per $1 million.

Requirement = ($2,000,000 / $1,000,000) × $75,000 = $150,000

Since the actual growth ($318,000) is greater than the required growth ($150,000), HDT is eligible for the additional credit.

Step 4: Calculate Credit Amounts (Rural Rates)

• Basic Credit: 10% of $2,000,000 = $200,000. (Applied against GRT/Withholding).
• Additional Credit: 10% of $2,000,000 = $200,000. (Applied against Income Tax).

Total State Tax Benefit: $400,000.

Because HDT has fewer than 50 employees, it qualifies as a research and development small business. If its income tax liability is only $20,000, it would receive a check for the remaining $180,000 as a refund from the state.

Macroeconomic Impact and Statistical Analysis

The fiscal effectiveness of the Technology Jobs and R&D Tax Credit is monitored closely by the New Mexico Legislative Finance Committee (LFC). Their July 2025 assessment provides critical data for businesses to understand the program’s stability and the state’s commitment to it.

Metric	FY24 Performance	Historical 10-Year Average
Total State Support	$11.2 Million	$5.8 Million
Number of Claims	390	~320
Jobs Created Annually	165	N/A
Economic ROI (GDP growth per $1 spent)	92%	92%
Return in Revenue (State recapture per $1)	19%	19%

The high economic ROI (92%) makes this one of the state’s most successful incentive programs. This success is largely attributed to the “payroll growth” requirement. By forcing companies to expand their headcount to get the best tax rates, the state ensures that “tax expenditures” translate into “local income”.

The average cost to the state for each job created is approximately $35,000. This is viewed as a “sound return on investment” because the high-tech jobs created usually command salaries far above the state average, leading to increased personal income tax collections and local spending.

Interaction with Other New Mexico Tax Credits

Businesses should be aware that the Technology Jobs and R&D Tax Credit does not exist in a vacuum. Its use may restrict or interact with other New Mexico incentives.

The Investment Credit

The Investment Credit (NMSA 7-9A) is available to manufacturers who purchase equipment for use in New Mexico. However, the state revenue office guidance suggests that claiming certain R&D credits may render a taxpayer ineligible for the Investment Credit on the same reporting period. Specifically, for small businesses, applying the R&D Small Business Tax Credit against a reporting period can make them ineligible for the Investment Credit for that same period.

The High-Wage Jobs Tax Credit

The High-Wage Jobs Tax Credit (HWJTC) provides a refundable credit equal to 8.5% of wages for new positions paying over $60,000 (urban) or $40,000 (rural). While it is possible to claim both federal and state R&D credits simultaneously, businesses must be careful not to “double count” new hires to meet different state payroll growth requirements. The HWJTC is often more lucrative for pure hiring, but the Technology Jobs and R&D credit is superior for capital-intensive research projects because it covers equipment and materials, not just wages.

Common Pitfalls in Payroll Documentation

Based on TRD rulings and audit history, several recurring errors lead to the disqualification of the additional credit.

Failure to Segment Facility Payroll

Large companies with multiple locations in New Mexico often make the mistake of using their aggregate state payroll as the “Base Payroll Expense.” If only one of their five locations is a “Qualified Facility,” they must isolate the payroll for that specific location. If an employee splits their time between a research facility in Socorro and a sales office in Albuquerque, only the portion of their wages allocated to the Socorro facility should be included in the calculation.

Neglecting the Inflation Adjustment

Many taxpayers simply subtract last year’s raw payroll from this year’s. This error always results in an overestimation of the “increase” and can lead to a partial or total denial of the additional credit. The CPI adjustment is mandatory, not optional.

Misinterpreting “Administrative Personnel”

While the law allows administrative staff at the facility to be included, it does not allow for the inclusion of corporate overhead from a different location. If a company’s CEO and HR Director are located in a corporate headquarters in New York, their wages cannot be allocated to a New Mexico research facility’s “Annual Payroll Expense,” even if they spent 20% of their time on New Mexico-related work. The personnel must be “at the qualified facility”.

Future Outlook for the Technology Jobs and R&D Credit

As of late 2024 and heading into 2025, the Technology Jobs and R&D Tax Credit remains a stable and permanent part of the New Mexico tax code. Unlike the High-Wage Jobs Tax Credit, which has a sunset date of July 1, 2026, the R&D credit does not currently have an expiration date.

However, legislative discussions (documented in HB 2 and other recent sessions) suggest that the state may look to further incentivize “distressed areas” or add even more rigorous job-quality ties in the future. For now, the program remains highly utilized by the aerospace, bioscience, and renewable energy sectors, with a notable 125% expenditure increase in FY24 alone. This indicates that the “Base Payroll Expense” mechanism is successfully serving its purpose: acting as a catalyst for a growing, high-wage economy in the Land of Enchantment.

Final Thoughts

The base payroll expense is the foundational metric that ensures the New Mexico Technology Jobs and Research and Development Tax Credit fulfills its promise of being a job-creation engine. By requiring companies to not only invest in research but also to demonstrably expand their human capital, the state has created a balanced incentive that benefits both the business community and the broader workforce.

For technology-based businesses, the additional credit offers a powerful way to reduce or eliminate state income tax liability, or even to receive direct cash refunds through small business provisions. However, the path to these rewards requires meticulous compliance with TRD guidance on CPI adjustments, W-2 Box 1 wage definitions, and the specific geographical requirements of qualified facilities. By understanding the “Base Payroll Expense” as a dynamic, inflation-adjusted baseline rather than a static historical figure, businesses can accurately forecast their tax benefits and strategically plan their hiring and research investments for years to come. In an increasingly competitive national landscape for tech investment, New Mexico’s rigorous but rewarding payroll-linked credit continues to provide a clear competitive advantage for companies willing to make a long-term commitment to the state.