The Payroll Factor in Nebraska Research and Development Tax Credit Apportionment: A Professional Analysis

The payroll factor represents the ratio of a taxpayer’s Nebraska-based employee compensation to their total global compensation paid during a specific tax period. Within the framework of the Nebraska Research and Development (R&D) tax credit, this factor serves as a mandatory or elective mechanism for apportioning a fair share of federal research incentives to the state, ensuring that tax benefits are directly tied to the human capital investment made within Nebraska’s borders.

The application of the payroll factor is a nuanced departure from Nebraska’s general move toward a single-sales factor apportionment model for corporate income tax. While the sales factor is designed to capture market presence, the payroll factor remains an essential tool for credits and incentives because it accurately reflects where the “activity” of innovation—the labor, the experimentation, and the technical supervision—actually takes place.1 For a multi-state business, the payroll factor acts as a geographical anchor, preventing the dilution of state-level incentives by out-of-state operations while rewarding companies that choose to base their high-value research personnel in Nebraska.3 Understanding this factor requires a deep dive into the Nebraska Revenue Act, administrative guidance from the Department of Revenue, and the shifting landscape of corporate taxation in the wake of the ImagiNE Nebraska Act and recent federal shifts regarding research and experimental expenditure amortization.

Theoretical and Statutory Foundations of Apportionment

Apportionment is the legal and mathematical process by which a state determines the percentage of a multi-jurisdictional business’s income or credits that are subject to its taxing authority.2 Historically, states utilized an equally weighted three-factor formula consisting of property, payroll, and sales. This traditional method aimed to balance the interests of “market states” (where products are sold) and “production states” (where products are made).1

However, the landscape of state taxation has shifted significantly toward “market-based” sourcing. Nebraska, like many of its peers, has adopted a single-sales factor apportionment formula for general corporate income tax purposes under Neb. Rev. Stat. § 77-2734.05.6 This shift was intended to incentivize in-state production by “exporting” the corporate tax burden to out-of-state companies that sell into the Nebraska market but have little physical footprint in the state.2

Despite this general trend, the payroll factor has not been relegated to the archives of tax history. It remains a foundational requirement for specific credits and alternative apportionment scenarios. Under Neb. Rev. Stat. § 77-2734.13(1), the payroll factor must still be calculated in instances where a single-factor formula does not fairly represent the taxable income or credit activity reasonably attributable to business operations conducted within the state.6 In the specific context of the Nebraska Advantage Research and Development Act, the payroll factor (in conjunction with the property factor) provides an alternative to the expenditure ratio method for calculating state-level credits.8

Defining the Payroll Factor Under Nebraska Law

The legal definition of the payroll factor is codified in Nebraska Revised Statute § 77-2734.13. It is expressed as a fraction where the numerator represents compensation paid in the state and the denominator represents total compensation paid everywhere.11

Compensation and Sourcing Rules

To calculate the payroll factor accurately, a firm must first define what constitutes “compensation.” According to Nebraska guidance, compensation includes wages, salaries, commissions, and any other form of remuneration paid to employees for personal services.11 This definition typically aligns with federal payroll tax standards but excludes payments to independent contractors, which are not considered “employees” for the purposes of the payroll factor.

The sourcing of compensation—determining whether it belongs in the Nebraska numerator—is governed by a hierarchy of tests outlined in § 77-2734.13(2):

1. The Specific Service Test: Compensation is paid in Nebraska if the individual’s service is performed entirely within the state.
2. The Incidental Service Test: If the individual performs services both within and without the state, but the service performed outside Nebraska is incidental to the service within the state (e.g., it is temporary or transitory in nature), the entire compensation is sourced to Nebraska.11
3. The Base of Operations Test: If the service is not incidental, it is sourced to Nebraska if the individual’s base of operations is in the state.
4. The Direction and Control Test: If there is no base of operations, the service is sourced to Nebraska if the place from which the service is directed or controlled is in the state.
5. The Residency Test: If none of the above tests apply, the service is sourced to Nebraska if the individual is a resident of Nebraska and the service is performed in a state where the taxpayer is not subject to tax.11

Exclusions and Unitary Group Considerations

For corporations that function as a “unitary group”—a collection of related entities whose operations are integrated and interdependent—the payroll factor calculation must eliminate intercompany transactions.6 Neb. Rev. Stat. § 77-2734.10(3) explicitly prohibits the inclusion of any amount eliminated as an intercompany transaction.6 This ensures that the payroll factor reflects true external economic activity rather than internal shifts of labor costs between subsidiaries for tax planning purposes.

Furthermore, payroll that is associated with the production of non-apportionable income (income that is allocated rather than apportioned) must also be excluded from the calculation.6 This maintains a clean link between the apportionable business income and the labor used to produce it.

The Nebraska Research and Development Tax Credit: A Statutory Overview

The Nebraska Advantage Research and Development Act was established to provide a meaningful incentive for businesses to conduct innovation within the state.8 The credit is intentionally tied to the federal Credit for Increasing Research Activities under Internal Revenue Code (IRC) § 41.3

Credit Rates and Eligibility

There are two distinct tiers of the credit based on the location of the research activity:

• Standard Credit (15%): A business firm is allowed a credit equal to 15% of the federal credit allowed under IRC § 41, or as apportioned to the state using the property/payroll factor or the expenditure ratio.3
• Enhanced University Credit (35%): If the research and experimental activities occur on a Nebraska college or university campus, or at a facility owned by such an institution, the credit rate increases to 35% of the federal credit.8

The credit is fully refundable for the entity claiming it, meaning that if the credit exceeds the company’s income tax liability, the difference can be received as a direct refund or used to offset sales and use tax liabilities.3

The Role of IRC Section 174

Nebraska law leverages the federal definition of research and experimental activities as found in IRC § 174.4 This definition generally encompasses expenditures in the taxpayer’s trade or business which represent research and development costs in the experimental or laboratory sense.17 This includes the cost of developing a model, blueprint, or software, as well as the salary of the researchers and the cost of supplies.3

Apportioning the Federal Credit to Nebraska

For a business that operates in multiple states, the federal research credit (as calculated on IRS Form 6765) must be “sliced” to determine what portion belongs to Nebraska. Neb. Rev. Stat. § 77-5803(2) provides two paths for this determination, and the taxpayer is allowed to choose the method that yields the higher credit amount.9

Method I: The Average of Property and Payroll Factors

This method uses the firm’s physical and human footprint to determine Nebraska’s share of the innovation.9

$\text{Average Factor} = \frac{\text{Nebraska Property Factor} + \text{Nebraska Payroll Factor}}{2}$ 9

The resulting percentage is applied to the total federal credit. For example, if a company has 50% of its global property and 50% of its global payroll in Nebraska, it can claim 50% of its federal credit as “Nebraska-sourced,” against which the 15% or 35% state rate is then applied.9

The property factor is defined in § 77-2734.12 as the average value of the taxpayer’s real and tangible personal property owned or rented and used in the state during the tax period, divided by the total average value of such property everywhere.8

Method II: The Expenditure Ratio

This method is more granular, looking at specific dollars spent on research rather than the firm’s overall footprint.9

$\text{Expenditure Ratio} = \frac{\text{Qualified Research Expenditures in Nebraska}}{\text{Total Qualified Research Expenditures Everywhere}}$ 3

This ratio is then multiplied by the federal credit to find the Nebraska portion. This method is often preferred by companies that have massive manufacturing plants in other states (high property/payroll elsewhere) but conduct their core R&D in a small, highly efficient laboratory in Nebraska.3

Revenue Office Guidance and Administrative Rulings

The Nebraska Department of Revenue (DOR) provides significant clarity through Revenue Rulings and tax form instructions, which are binding until amended.14

Revenue Ruling 29-10-2: Enhanced Credits and Campus Research

Revenue Ruling 29-10-2 is the definitive guide for firms seeking the 35% enhanced credit.15 The DOR clarifies that the enhanced credit is a “separate” credit from the standard 15% credit, meaning a single company can qualify for both if they conduct some research in-house (off-campus) and some in collaboration with a university (on-campus).16

The ruling emphasizes:

• Location over Institution: The facility where the research happens must be in Nebraska, even if the university itself is headquartered elsewhere (though in practice, this usually applies to Nebraska-based institutions like UNL or Creighton).16
• The Five-Year Window: The enhanced credit is allowed for the first year it is claimed and for the four tax years immediately following.16
• Separation of Expenses: If a firm splits research between on-campus and off-campus, it must use either actual expenditure tracking or a dedicated apportionment factor for each site to ensure that the 35% rate is not inappropriately applied to standard activities.16

E-Verify and Labor Compliance

A critical component of Nebraska’s local guidance is the E-Verify requirement. For all tax years beginning after October 1, 2009, a business firm cannot claim the R&D tax credit unless it electronically verifies the work eligibility status of all employees hired in Nebraska during that tax year.14 This mandate creates a direct administrative link between the payroll factor and the legal standing of the workforce. If a company fails to E-Verify even one new hire, the entire R&D credit may be jeopardized during an audit.14

Form 3800N and Worksheet RD

The procedural mechanics of claiming the credit involve Form 3800N (Nebraska Incentives Credit Computation) and Worksheet RD.10

• Line-by-Line Apportionment: Worksheet RD requires the taxpayer to list the Nebraska property and payroll factors to four decimal places.9
• Irrevocability of Election: The election to treat the credit as a refund of sales and use taxes or as a refundable income tax credit is made annually on Worksheet RD and is irrevocable for that tax year.3
• Documentation: The state requires taxpayers to attach a schedule showing the detailed calculations of the factors used.10 This is particularly important for Method I, where the “global” denominator must be verifiable against the company’s audited financial statements or federal tax returns.9

The Impact of Remote Work and the “Convenience of the Employer” Rule

The modern labor market has introduced complexity to the payroll factor calculation, particularly with the rise of telecommuting. Nebraska’s guidance on this evolved significantly with LB 1023 in 2024.13

Before this legislative change, Nebraska applied a strict “convenience of the employer” rule. Under this rule, if a nonresident employee worked for a Nebraska company from an out-of-state home for their own convenience (rather than the employer’s necessity), their compensation was considered Nebraska-sourced income.13

LB 1023 amended this rule, effective for tax years beginning on or after January 1, 2025 13:

• The 7-Day Safe Harbor: The convenience rule now only applies if the individual is physically present in Nebraska for more than seven days during the tax year.13
• The Base of Operations Rule: The “base of operations” rule remains in effect. If an employee performs some service in Nebraska and their base of operations is in the state, their income is Nebraska-sourced.11

For R&D credit purposes, this means the payroll factor numerator may fluctuate based on where researchers are physically located. A firm with a lab in Lincoln but several software engineers working remotely from Colorado must carefully evaluate whether those engineers’ salaries belong in the Nebraska numerator. If they spend more than seven days at the Lincoln lab, their entire salary might be pulled into the Nebraska factor under the “incidental” or “base of operations” rules.11

Legislative Evolution: From NAA to ImagiNE Nebraska

The Nebraska Advantage Act (NAA) was the state’s flagship incentive program for over a decade. It was replaced by the ImagiNE Nebraska Act on January 1, 2021.22 While the NAA is no longer accepting new applications, existing projects continue to operate under its terms.22

The Research and Development Act remains a standalone program that bridges both eras.3 However, the ImagiNE Act introduced several concepts that impact how businesses view their payroll and investment:

1. Simplification of Locations: ImagiNE moved away from the “segregation” of locations. Previously, companies had to carefully define the boundaries of a “qualified location”.22
2. Wage Requirements: ImagiNE projects generally require higher average wages for new employees to count toward investment thresholds.22 While the R&D credit itself does not have a minimum wage threshold for the payroll factor, the overall economic strategy of the state is to favor the types of high-paying jobs that typically appear in a research-heavy payroll factor.22
3. Part-Time Employees: Under ImagiNE, part-time hours are excluded from “new employee” calculations.22 However, for the R&D credit’s payroll factor, the statutory definition in § 77-2734.13 includes “total compensation,” which encompasses both full-time and part-time staff.11

The 2024-2026 Shift: Deductions for R&E Expenditures

A monumental change in Nebraska’s tax treatment of research occurred with the passage of LB 1023 in April 2024.13 This legislation was a direct response to the federal Tax Cuts and Jobs Act (TCJA), which required businesses to capitalize and amortize R&D expenses over five years (for domestic research) or fifteen years (for foreign research) starting in 2022.13

Restoring Immediate Expensing

Starting with tax years beginning on or after January 1, 2026, Nebraska will allow taxpayers to fully deduct R&D expenditures in the year they are incurred.13 This creates a “double benefit” for Nebraska firms:

1. The Deduction: They can reduce their Nebraska taxable income by 100% of their R&E costs.13
2. The Credit: They can still claim the 15% or 35% credit based on those same expenditures.8

This legislative move underscores the state’s commitment to being the most competitive R&D hub in the region.27 By allowing immediate expensing while the federal government still mandates amortization, Nebraska effectively lowers the “after-tax cost” of research more than neighboring states like Kansas or Missouri.26

Practical Application: A Comprehensive Multi-State Example

To illustrate the interplay between the payroll factor, property factor, and the R&D credit, we will examine the case of “Global Bio-Systems,” a unitary group operating in Nebraska, California, and Germany.

Scenario Background

Global Bio-Systems conducts advanced genetic research for seed corn.

• Total Federal R&D Credit (Form 6765): $5,000,000
• Nebraska Research: Conducted at a proprietary lab in Lincoln and in collaboration with the University of Nebraska.
• Global Footprint: Large manufacturing presence in California and a satellite office in Munich.

Step 1: Data Collection for Factors

The tax department identifies the following figures for the 2024 tax year:

Step 2: Evaluating the Two Methods

Method I: Factor-Based Apportionment

The firm calculates the average of the property and payroll factors:

$\text{Average Factor} = \frac{20\% + 40\%}{2} = 30\%$ 9

The Nebraska Portion of the Federal Credit under Method I:

$\$5,000,000 \times 30\% = \$1,500,000$

Method II: Expenditure Ratio

The firm calculates the ratio of specific research spend:

$\text{Expenditure Ratio} = \frac{\$5,000,000}{\$20,000,000} = 25\%$ 3

The Nebraska Portion of the Federal Credit under Method II:

$\$5,000,000 \times 25\% = \$1,250,000$

Election: Global Bio-Systems elects Method I because it yields a higher Nebraska-sourced credit amount ($1,500,000 vs. $1,250,000).9

Step 3: Applying State Credit Rates

The firm must further bifurcate its $1,500,000 Nebraska-sourced portion based on where the work happened. Internal logs show that 20% of the Nebraska effort was university-based (enhanced) and 80% was in-house (standard).

1. Standard Credit: $(\$1,500,000 \times 80\%) \times 15\% = \$180,000$
2. Enhanced Credit: $(\$1,500,000 \times 20\%) \times 35\% = \$105,000$
3. Total Nebraska R&D Credit: $285,000

Step 4: Utilization

Global Bio-Systems has a Nebraska income tax liability of $100,000.

• The credit offsets the $100,000 liability entirely.
• The remaining $185,000 is refunded to the company as cash, which they reinvest into new lab equipment.3

Economic Impact and Performance Statistics

The Nebraska Department of Revenue and the Legislative Audit Office provide yearly statistics that illustrate the real-world impact of the R&D credit and its apportionment rules.

Participation and Fiscal Performance

Historically, the R&D program has seen robust participation.27

• Total Credits Awarded (2006-2020): $72.3 Million.27
• Total Credits Used: $67.7 Million (93.7% utilization).27
• Annual Usage (2020): Exceeded $10 Million, significantly higher than the legislature’s original $5 Million estimate.27
• Microenterprise Overlap: For smaller entities, the R&D credit is often combined with the Microenterprise Tax Credit. In 2022, participants in related programs earned over $1 Million in credits.24

Sector-Specific Distribution

The high-tech and agricultural sectors remain the primary beneficiaries of the payroll-factor-based credits.3

• High-Tech Sector: 109 companies (24% of participants) were awarded $14.8 Million.27
• Renewable Energy: 19 companies (4% of participants) were awarded $4.2 Million.27
• Urban vs. Rural: 78% of the net job increase from incentive projects occurs in urban areas (Douglas, Lancaster, Sarpy counties), while 22% occurs in rural Nebraska.24

Audit Guidance and Record-Keeping Best Practices

Given the high value and refundability of the Nebraska R&D credit, it is a frequent target for Department of Revenue audits. Proper documentation of the payroll factor is the first line of defense.

Maintaining the Global Denominator

The most common audit challenge is the verification of the “everywhere” denominator.9 Auditors will request:

• Consolidated Financials: To verify the total global payroll.
• Federal Form 941s: To verify domestic payroll.
• Unitary Group Schedules: To ensure intercompany eliminations are accurate.6

Payroll Factor Numerator Verification

To prove the Nebraska numerator, firms should maintain:

• W-2 Logs by State: Broken down by employee.
• Remote Work Agreements: Specifically those that establish a “base of operations” in Nebraska for out-of-state residents.11
• Time Tracking for Researchers: If a researcher splits their time between R&D and general administrative duties, their compensation must be pro-rated for the expenditure ratio method, although it is usually included in full for the general payroll factor.3

The E-Verify Audit

The DOR audits E-Verify compliance with zero tolerance. Businesses must retain:

• E-Verify Case Results: For every Nebraska hire during the tax year.
• Form I-9s: Cross-referenced with E-Verify logs.
• Timing Proof: Evidence that the verification was “timely” (usually within three business days of the hire).14

Future Outlook: The Intersection of LB 1023 and Federal Policy

The future of the Nebraska R&D credit will be shaped by the divergence between state and federal policy regarding IRC Section 174.13 As Nebraska moves toward immediate expensing in 2026, firms will face a complex accounting challenge.

Strategic Planning for 2026

Tax professionals are already advising clients to consider the following:

• Amortization vs. Expensing: While Nebraska allows immediate expensing, it also offers a five-year irrevocable term for amortization.21 If a company anticipates significantly higher tax rates in the future, they may choose to amortize to offset future income.
• Interplay with PTET: For S-corps and Partnerships, the Nebraska Pass-Through Entity Tax (PTET) allows the entity to pay tax at the highest individual rate (currently 5.84%, trending down to 3.99%).29 The R&D credit can be used by the entity to reduce this tax or passed through to shareholders.4
• The Seven-Day Rule: With the “Convenience of the Employer” rule softening, firms may find it easier to hire remote researchers without inadvertently creating a massive Nebraska payroll factor, provided the employees stay below the seven-day physical presence threshold.13

Conclusion: Synthesis and Recommendations

The payroll factor is far more than a simple accounting variable in the Nebraska tax code; it is a vital instrument of economic policy that ensures the state’s research incentives are awarded to those who build their intellectual foundations in Nebraska. By allowing businesses to choose between a footprint-based apportionment (Method I) and an expenditure-based ratio (Method II), Nebraska provides a flexible, taxpayer-friendly environment that caters to both massive industrial concerns and lean, high-tech startups.

The integration of the payroll factor into the R&D credit framework requires a holistic view of the law—from the primary definitions in § 77-2734.13 to the enhanced university incentives clarified in Revenue Ruling 29-10-2. The recent legislative shifts under LB 1023 further bolster Nebraska’s position by restoring immediate R&D expensing, effectively decoupling the state from the restrictive amortization requirements of the federal TCJA.

For business owners and tax professionals, the path forward is clear: rigorous documentation, proactive E-Verify compliance, and a strategic annual evaluation of apportionment methods are essential to capturing the full value of Nebraska’s innovation incentives. As the state continues to lower its corporate and individual tax rates, the R&D credit remains a cornerstone of a competitive, innovation-driven economy, rewarding those who invest in Nebraska’s most valuable resource—its people.

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