Direct and Predominant Use (Sales Tax)

Direct and predominant use is the statutory requirement that tangible personal property be utilized actually and specifically in experimental research activities more than 50 percent of the time to qualify for New York sales tax exemptions. This dual-pronged standard serves as a critical regulatory gatekeeper, ensuring that tax relief is targeted exclusively toward core innovation activities rather than administrative or collateral business functions.

The application of this standard requires a sophisticated understanding of how New York State distinguishes between qualifying scientific inquiry and non-qualifying business operations. While the “direct” component focuses on the functional relationship between the property and the research act, the “predominant” component establishes a temporal or usage-based threshold. For businesses operating within the New York innovation corridor, these definitions are not merely academic; they dictate the eligibility of multi-million dollar investments in laboratory equipment, specialized software, and industrial utilities. Understanding the interplay between these sales tax exemptions and the broader New York Research and Development (R&D) income tax credits—such as those under the Excelsior Jobs Program—is essential for comprehensive tax planning and robust audit defense.

Statutory Framework of the Research and Development Exemption

The legal basis for the research and development sales tax exemption is found in Article 28 of the New York Tax Law. Specifically, Section 1115(a)(10) provides the primary exemption for tangible personal property, while Section 1115(b)(ii) addresses the more stringent requirements for utilities and energy services. These provisions were enacted to incentivize high-technology industries to remain and expand within the state by lowering the cost of the physical infrastructure necessary for scientific advancement.

The law defines the scope of research and development in the “experimental or laboratory sense” as activities having specific ultimate goals. These include basic research in a scientific or technical field, the advancement of technology in such fields, the development of entirely new products, the substantial improvement of existing products, and the discovery of new uses for existing products. This statutory definition creates a clear boundary: the exemption is reserved for the phase of the business cycle focused on discovery and invention, rather than the phase focused on commercialization, maintenance, or administrative management.

The Experimental and Laboratory Sense Standard

To qualify for the exemption, the activity must pass the “experimental or laboratory sense” test. This is often interpreted through the lens of the “four-part test” commonly associated with federal R&D credits, though New York’s sales tax guidance provides its own specific criteria. The New York State Department of Taxation and Finance emphasizes that qualifying research must fundamentally involve the principles of physical or biological science, engineering, or computer science.

Qualifying Research Category	Technical Scope and Objectives
Basic Research	Inquiry into fundamental scientific principles without immediate commercial applications.
Technological Advancement	Efforts to solve technical uncertainties or overcome engineering barriers in a specific field.
New Product Development	The synthesis of new materials, chemicals, or software architecture into a functional prototype.
Product Enhancement	Significant iterative improvements to functionality, durability, or safety through scientific testing.
Innovative Applications	Testing existing technologies in unproven environments to validate new functional uses.

Conversely, the law explicitly identifies activities that do not meet this standard. Ordinary testing or inspection of materials for quality control, efficiency surveys, management studies, consumer surveys, advertising, and promotions are strictly excluded. For instance, a pharmaceutical company using a high-performance liquid chromatography (HPLC) machine to determine the chemical composition of a new compound is performing exempt R&D. However, if that same company uses the HPLC machine to check the purity of a production batch before it is bottled for sale, that use is considered quality control and is non-exempt.

Analytical Depth of the Direct Use Requirement

Direct use represents the functional link between the purchased property and the exempt research activity. New York guidance defines direct use as “actual use in the research and development operation”. This definition is expansive in some areas but restrictive in others, necessitating a detailed examination of how property interacts with the research process.

Tangible Personal Property for Direct Use

In a laboratory environment, property considered to be in direct use broadly includes materials worked on and the machinery, equipment, and supplies used to perform the actual research work. This includes highly specialized scientific instruments as well as more common items that are essential to the research process.

The New York State Department of Taxation and Finance, in various advisory opinions such as TSB-A-86(45)S, has provided a comprehensive list of equipment deemed to be in direct use. This list includes but is not limited to:

• Centrifuges and shakers used for sample preparation.
• Incubators and sterilizers used to maintain biological cultures.
• Gene machines, including power supplies and fraction columns, used in genomic research.
• Spectrophotometers and pH meters used for chemical analysis.
• CAD/CAM computer software and hardware systems used for technical design and simulation.
• Consumables such as reagents, test tubes, and slides that are integral to experimental procedures.

The inclusion of technical books and journals is a notable feature of the New York guidance. These are exempt when purchased for a research laboratory to perform background research necessary for experimental design. This recognizes that scientific advancement is a knowledge-intensive process where the “tools” of research include both physical hardware and the specialized information required to operate it effectively.

The Collateral Use Exclusion

The most common point of failure in a “direct use” claim is the categorization of collateral activities. Usage in activities collateral to the actual research process is not deemed to be direct use. Collateral activities are those that support the researchers or the facility but do not participate in the experiment itself.

Example 2 in the state’s official guidance clarifies this distinction: laboratory tables used in a research laboratory are exempt because they provide the necessary platform for the experiment, but desks and chairs used by clerical personnel or administrative managers in the same lab are not used directly in research and are therefore taxable. This logic extends to safety equipment. In the Enzo Biochem opinion, the state ruled that “Research Safety Equipment,” specifically eye washes and safety showers, do not qualify for the exemption because they are used in collateral activities (safety) rather than the actual research work.

The Predominant Use Threshold and Temporal Allocation

The “predominant use” test is a quantitative requirement that property be used directly in an exempt function more than 50 percent of the time. This threshold creates an “all-or-nothing” scenario for sales tax on tangible personal property. If a machine is used 51 percent of the time for R&D and 49 percent for production, the entire purchase price is exempt. Conversely, if it is used 49 percent for R&D and 51 percent for production, the entire purchase price is taxable.

Methodologies for Measuring Use

Taxpayers must have a reliable system for tracking the usage of property that may have dual functions. The state does not mandate a single method, but the records must be contemporaneous and substantiated.

Measurement Method	Application in a Laboratory Setting
Hourly Time Logs	Recording the specific hours equipment is dedicated to R&D projects vs. commercial testing.
Throughput Volume	Counting the number of experimental samples processed compared to quality control samples.
Project-Based Coding	Assigning asset use to specific cost centers designated as R&D within the accounting system.
Equipment Output	Measuring data generated for research publications vs. data generated for customer reporting.

Failure to maintain these records is a primary trigger for audit assessments. If a business cannot prove more than 50 percent use, the Department of Taxation and Finance will typically assess tax on the full purchase amount plus penalties and interest.

The Aircraft Manufacturer Example

Guidance provided in the tax law illustrates the predominant use rule through an aircraft manufacturer’s testing phase. When a manufacturer assembles two airplanes solely for function and reliability tests prior to mass production, the parts, equipment, instrumentation, and fuel used on those airplanes are exempt because they are used 100 percent for research and development. This represents a clear case where the “predominant” threshold is easily met because the assets have no commercial or administrative utility during the testing phase.

The Higher Standard for Utilities: Direct and Exclusive Use

A significant technical trap for taxpayers is the difference in standards between tangible personal property (TPP) and utilities. While TPP must meet a “predominant” (>50%) standard, gas, electricity, refrigeration, and steam must meet an “exclusive” (100%) standard to be exempt.

The 100 Percent Rule for Energy

Section 1115(b)(ii) of the Tax Law allows for the exemption of utilities only when they are used “directly and exclusively” in research and development. In the context of the New York State tax code, “exclusively” is strictly interpreted as 100 percent of the usage.

Because most businesses receive electricity or gas in bulk through a single meter that powers both laboratory equipment (exempt) and general office lighting or HVAC systems (non-exempt), claiming this exemption requires a rigorous allocation process. The user must maintain adequate records of the allocation and submit an engineering survey or specific formulae used to differentiate the exempt consumption from the taxable consumption.

Engineering Surveys and Formulaic Allocation

The engineering survey is the primary document accepted by the Department of Taxation and Finance to substantiate the utility exemption. This survey must detail:

• The specific machines used for R&D and their power consumption rates (kilowatts/BTUs).
• The hours of operation for each piece of R&D equipment.
• The total utility consumption of the facility.
• A calculation showing the percentage of the total utility bill that is attributable solely to the direct R&D function.

A biological laboratory development vaccines provides a useful example. The lab has an autoclave for instrument sterilization and a refrigerator for vaccine storage, both powered by electricity. These machines represent direct and exclusive R&D use. However, the laboratory’s electric bill also covers general lighting and air conditioning for the building. To benefit from the exemption, the lab must pay the full sales tax on its utility bill and then apply for a refund (Form AU-11) for the specific portion of the tax applicable to the electricity consumed by the autoclave and refrigerator, as identified by their engineering survey.

New York City Specific Sales Tax Variations

Businesses operating within the five boroughs of New York City must navigate an additional layer of complexity. While the state-level R&D exemption is generally mirrored by local jurisdictions, the treatment of utilities in New York City is distinct.

Under the New York City administrative code, while energy used in the production process (manufacturing) may receive certain state-level exemptions, it is often not exempt from the local New York City sales tax. However, the R&D utility exemption provided under Tax Law Section 1115(b)(ii) is explicitly stated to apply to local sales and use taxes, including the tax imposed within New York City.

Jurisdiction	State Sales Tax (4%)	NYC Local Sales Tax (4.5%)	MCTD Surcharge (0.375%)
R&D TPP Exemption	Exempt	Exempt	Exempt
R&D Utility Exemption	Exempt	Exempt	Exempt
Production Utility Exemption	Exempt	Taxable	Exempt

This creates a critical distinction for NYC-based firms. If an asset is classified as “production” equipment, the energy to run it is taxable at the local level. If it is classified as “R&D” equipment, the energy is exempt at both state and local levels. This puts a premium on correctly identifying the “direct and exclusive” R&D energy load within New York City facilities.

Administrative Compliance and the ST-121 Certificate

The R&D sales tax exemption is not automatic; it is a self-executed exemption that requires the proactive use of specific documentation. The primary tool for this is Form ST-121, the Exempt Use Certificate.

Using Form ST-121

To purchase tangible personal property tax-free, the purchaser must be a registered sales tax vendor and provide a completed Form ST-121 to the seller within 90 days of the delivery of the property. The seller is required to keep this certificate for at least three years as proof that they were not required to collect sales tax on the transaction.

Form ST-121 can be used as a “single-purchase certificate” or as a “blanket certificate.” A blanket certificate is used for recurring purchases of the same general type of property from the same vendor. If a blanket certificate is on file, each subsequent purchase invoice must still show the purchaser’s name and address to link the transaction to the original exemption claim.

Penalties for Misuse

The Department of Taxation and Finance enforces strict compliance regarding the use of exemption certificates. Misuse of Form ST-121 can subject the taxpayer to significant civil and criminal sanctions, including:

• A penalty equal to 100 percent of the tax due.
• A $50 penalty for each fraudulent certificate issued.
• Criminal felony prosecution for willful tax evasion.
• Revocation of the business’s Certificate of Authority to operate in the state.

Furthermore, if a vendor fails to collect tax because they accepted an “improperly completed” certificate, the vendor themselves can become personally liable for the tax, plus penalty and interest. This creates a high standard for both buyers and sellers in the R&D marketplace.

Intersection with New York R&D Income Tax Credits

A common area of confusion for businesses is the difference between the sales tax exemption for R&D and the income tax credits for R&D. While they share a common goal of fostering innovation, they operate under different legal frameworks and utilize different definitions of “qualified” expenses.

The Excelsior Research and Development Tax Credit

Part of the Excelsior Jobs Program, this credit is equal to 50 percent of the portion of the Federal R&D tax credit that relates to expenditures in New York.

• Qualified Research Expenses (QREs): These are defined according to Internal Revenue Code (IRC) Section 41(b). QREs include wages for employees performing research, supplies used in research, and contract research expenses.
• The 6% Cap: The credit is generally capped at 6 percent of research expenditures attributable to activities conducted in New York, or 8 percent for “Green Projects”.
• Direct Use vs. QREs: A piece of machinery may be exempt from sales tax under the “direct and predominant use” rule, but it is generally not a QRE for the Excelsior credit because equipment is considered a capital expenditure rather than a recurring research expense under IRC Section 41.

The Life Sciences Research and Development Tax Credit

This program targets new life sciences businesses and offers a fully refundable credit.

• Credit Rates: 15 percent for companies with 10 or more employees, and 20 percent for those with fewer than 10.
• Limited Participation: The credit is capped at $500,000 per year and can only be claimed for three consecutive years.
• Relationship to Sales Tax: A life sciences startup might use Form ST-121 to buy lab equipment sales-tax-free and simultaneously claim the Life Sciences credit on the wages of the scientists using that equipment.

Comparison of Primary R&D Incentives

Feature	R&D Sales Tax Exemption	Excelsior R&D Credit	Life Sciences R&D Credit
Statute	Tax Law § 1115(a)(10)	Tax Law § 210-B.6	Tax Law § 210-B / ESD
Primary Standard	Direct & Predominant Use	Federal IRC § 41 (QRE)	Federal IRC § 41 (QRE)
Eligible Costs	TPP & Utilities	Wages, Supplies, Computers	Wages, Supplies
Certification	Self-executed (ST-121)	ESD Certificate Required	ESD Certificate Required
Benefit Type	Upfront Tax Avoidance	Refundable Income Tax Credit	Refundable Income Tax Credit

The critical strategic insight for businesses is that these incentives are often additive. A company can avoid 8.875 percent in sales tax on a large equipment purchase and then use the supplies consumed by that equipment to generate an additional 6 percent to 20 percent income tax credit.

Economic Impact and Statistics of New York R&D Incentives

The magnitude of these tax expenditures highlights their importance to the New York economy. The state’s fiscal reporting provides insight into the scale of these programs.

According to the Fiscal Year 2025 Annual Report on New York State Tax Expenditures, the state collected approximately $18.7 billion from state-level sales and use taxes and $23.0 billion for local governments in the 2023-24 fiscal year. While specific breakouts for the R&D exemption are often based on “suggestive” data because no tax return exists for the initial exemption (as the tax is never paid), the broader “Cross-Article Tax Credits” and sales tax expenditures are valued in the billions.

In New York City, the 2025 Tax Expenditure Report estimates that quantified City sales tax expenditures (all categories combined) totaled $4.7 billion for the 2021 calendar year. Business income tax expenditures, which include R&D-related credits, were valued at approximately $1.1 billion for the same period. These statistics demonstrate a high level of utilization by the private sector, particularly in research-intensive hubs like the New York City metropolitan area and the Albany “Tech Valley.”

Audit Pitfalls and Strategic Mitigation

Given the high value of these exemptions, they are frequent targets for the New York State Department of Taxation and Finance (NYSDTF). Auditors look for specific discrepancies and lack of documentation.

Common Audit Errors

1. Installation and Repair Services: One of the most common pitfalls is the assumption that if a machine is exempt from sales tax, the service to repair it is also exempt. This is incorrect. Charges for installation, repair, maintenance, or servicing of exempt R&D property are not exempt and remain subject to sales tax.
2. Inadequate Exemption Certificates: Missing or improperly completed ST-121 forms are a leading cause of assessments. Auditors will often project an error rate from a sample of invoices back over the entire audit period, leading to substantial liabilities.
3. Confusion with Quality Control: As emphasized throughout state guidance, equipment used for routine quality control check on a production line does not qualify. Auditors often find “R&D” equipment that is physically located on the production floor rather than in a segregated laboratory.
4. Utility Miscalculation: Businesses claiming a 100 percent utility exemption without an engineering survey are almost certain to face a partial disallowance. Without a survey, auditors will often use a standard (and less favorable) industry percentage to calculate the exempt portion.

Best Practices for Compliance

To protect R&D tax benefits, businesses should implement a “tax-aware” procurement and operational strategy:

• Establish a Certificate Binder: Maintain a centralized physical or digital repository of all ST-121 forms, categorized by vendor and updated annually to ensure signatures are current.
• Synchronize Fixed Asset and Tax Labels: Ensure that assets labeled as “R&D” for sales tax purposes are consistently classified in general ledgers and income tax returns.
• Contemporaneous Documentation: Maintain a “Project Lab Note” or research log that identifies when specific pieces of high-value equipment were used for experimental purposes vs. other tasks.
• Professional Utility Audits: Hire a specialized engineering firm to perform a “Utility Study” that meets NYSDTF standards for the “direct and exclusive” exemption. This study should be refreshed if the laboratory adds major new equipment.

Comprehensive Case Study: Innovate-NY Biotech

To illustrate the practical application of these rules, consider “Innovate-NY,” a biotechnology firm in New York City specializing in synthetic proteins.

The Laboratory Build-Out

Innovate-NY purchases $2,000,000 in laboratory equipment.

• The Equipment: They buy specialized gene sequencers, centrifuges, and microscopes. Because these are used 100 percent for research, they provide Form ST-121 to their vendors and pay $0 in sales tax, saving approximately $177,500 (8.875% NYC rate).
• The Furniture: They also buy $50,000 in office desks and chairs for their administrative staff. They must pay the full 8.875 percent sales tax on these items, as they are for collateral use.

Ongoing Operations

During the first year, they have the following operational costs:

• Electricity: The facility uses $10,000 a month in power. An engineering survey reveals that 40 percent of the load is dedicated to thegene sequencers (direct and exclusive use), while 60 percent is for lighting and HVAC. Innovate-NY pays the full sales tax to the utility provider but files Form AU-11 quarterly for a refund of the 8.875 percent tax on $4,000 of their monthly bill.
• Equipment Repair: A gene sequencer breaks down, and a technician charges $5,000 for parts and $2,000 for labor. The parts may be purchased exempt with ST-121 (if they meet the direct and predominant test as replacement parts), but the $2,000 labor charge must be taxed.
• R&D Supplies: They spend $100,000 on reagents and disposable slides. These are purchased tax-free using ST-121. At year-end, these $100,000 in supplies are included in the company’s “Qualified Research Expenses” for the Life Sciences R&D Tax Credit, netting a 20 percent refund ($20,000) from the state.

The NYSDTF Audit

Two years later, the state audits Innovate-NY.

• The Auditor’s Review: The auditor checks the gene sequencers. Because Innovate-NY maintained a digital log showing the machines were only used for research and never for contract commercial testing, the “predominant use” claim is upheld.
• The Finding: The auditor notices the company didn’t pay tax on the labor for the gene sequencer repair. The company is assessed the back tax plus a 10 percent penalty for this oversight.

Future Outlook and Legislative Trends

The landscape of New York R&D tax incentives remains dynamic. Recent legislative updates, such as the 2024-2025 budget proposals, have focused on expanding credits for “Green Projects” and semiconductor supply chains (CHIPS), signaling a continued state commitment to high-tech sectors. Furthermore, new proposals like Senate Bill S1115 aim to reduce the general sales tax rate to 2 percent for small businesses with 20 or fewer employees, which could provide additional relief for early-stage R&D firms.

As federal tax laws evolve—specifically the recent changes regarding the immediate expensing of R&D costs under Section 174—the state’s coupling with federal definitions will continue to impact the effective value of these credits for New York taxpayers.

Final Thoughts

The “Direct and Predominant Use” standard is the linchpin of the New York sales tax strategy for innovation-based businesses. While the 50 percent threshold for tangible personal property provides a reachable bar for most laboratories, the 100 percent “exclusive” standard for utilities and the mandatory taxation of repair labor represent rigorous compliance hurdles. By integrating these sales tax exemptions with income-tax-based incentives like the Excelsior Jobs Program, businesses can significantly reduce their effective tax rate. However, the success of this strategy is entirely dependent on meticulous, contemporaneous recordkeeping and a nuanced understanding of local jurisdiction variations, particularly in New York City. For the professional peer navigating this landscape, the combination of technical legal knowledge and proactive administrative rigor is the only reliable path to maximizing state-level innovation incentives while minimizing the substantial risks of tax audit assessments.