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In this article, discover
Unlock utility sales tax exemptions, recover taxes paid, and reduce tax liability by conducting a Predominant Use Study
What is a Predominant Use Study and why it matters for manufacturers
A Predominant Use Study is a detailed utility usage analysis performed to determine whether utilities, equipment and other inputs are primarily used in exempt manufacturing or processing activities. When the predominant use threshold, typically more than 50% is met, businesses may qualify for an exemption from sales tax, recover taxes paid and significantly reduce future sales tax liability.
Utilities are often the most overlooked opportunity. By analyzing utility bills from utility companies, including electricity measured by kilowatt hour, natural gas and water usage tied directly to production, manufacturers can recover tax refunds for prior years and establish an on going utility sales tax exemption.
These studies go beyond high-level reviews. When properly performed, often with licensed engineering involvement, predominant use studies provide defensible documentation that many states require, minimizing risk while maximizing financial benefit.
Predominant Use threshold: the core concept
The value of a Predominant Use Study depends on proving that a majority of resources such as utilities, machinery or supplies support exempt manufacturing activities. This threshold, generally over 50% of total usage, is critical to qualifying for refunds and exemptions.
By documenting predominant use, manufacturers can:
- Recover thousands to millions in sales tax refunds, including taxes paid on electricity, natural gas and water.
- Reduce future sales tax liability on utilities and each qualifying piece of equipment.
- Free up cash flow previously tied up in overpaid sales tax for reinvestment in operations, technology or growth.
In effect, the study rewards operational efficiency by aligning tax savings with how resources are used in production.
What expenses and activities qualify?
A Predominant Use Study evaluates which expenses meet exemption criteria under state law. While requirements vary, qualifying costs commonly include:
- Utilities such as electricity, natural gas and water used in manufacturing or processing; usage is substantiated through utility bills and kilowatt-hour analysis to support an exemption from sales tax.
- Machinery and equipment, including each qualifying piece of equipment primarily used in exempt activities.
- Supplies directly associated with manufacturing, processing or agricultural operations.
Accurate documentation enables manufacturers to look back for several years to recover sales taxes paid while ensuring future purchases qualify for ongoing exemptions.
Qualifying costs for manufacturers
How to claim sales tax exemptions
A properly performed Predominant Use Study ensured businesses recover historical overpayments while optimizing tax treatment on future utility and equipment costs. Claiming exemptions through a Predominant Use Study follows a structured, defensible process:
Determine eligibility and identify potential savings related to utilities, equipment and production activities.
Gather utility bills, production data, and equipment usage information from utility companies and internal systems.
Perform detailed utility studies to calculate predominant use percentages by kilowatt hour and operational usage.
Prepare detailed reports to support sales tax refunds and establish a utility sales tax exemption.
Implement procedures to maintain exemptions and reduce future sales tax liability.
Additional benefits of Predominant Use Studies
Beyond recovering past taxes, Predominant Use Studies deliver long-term strategic value:
- Recover overpaid sales tax on utilities and equipment is often one of the largest overlooked savings opportunities.
- Lower future sales tax liability by establishing exemptions for electricity, natural gas, water and machinery.
- Improve cash flow by unlocking funds previously paid in error.
- Ensure compliance through thorough documentation that states require.
- Align operational efficiency with tax strategy, rewarding manufacturers that maximize resource use in sales tax exempt production activities.
By accurately documenting how utilities and equipment are used, manufacturers transform everyday operating costs into sustainable, defensible sales tax savings.
Partner with Ayming USA to maximize your tax savings
With 40 years of complex tax consulting experience, Ayming helps manufacturing and production-driven businesses recover overpaid sales tax and secure ongoing utility and equipment exemptions. Our specialists manage the entire Predominant Use Study process:
- Complimentary eligibility assessments
- Utilities and machinery usage analysis
- Predominant Use and utility calculation studies
- Refund claim preparation and filing
- Defensible documentation
- Ongoing exemption implementation monitoring
Your savings drive our success – and our expertise ensures compliance while maximizing your tax refunds and long-term value.
