IRS starts clock on wage and apprenticeship rules


The IRS has released guidance (Notice 2022-61) on the new prevailing wage and apprenticeship requirements that taxpayers must meet to receive the full credit and deduction amounts available for the energy incentives under the Inflation Reduction Act of 2022 (IRA).


The IRA provided that the new rules would only take effect for projects that begin construction 60 days after guidance is published. Notice 2022-61 was published on Nov. 30, 2022 so the requirements will apply to projects that began construction on or after Jan. 29, 2023.


Grant Thornton Insight

Projects that begin construction before Jan. 29 can generally still qualify for the full credit rates (and full Section 179D deduction) without meeting the requirements. So, taxpayers have some incentive to establish that construction began before Jan 29, as the requirements will add costs and compliance burdens to projects. The notice generally relies on existing guidance for establishing that construction has begun, which can include paying or incurring as little as 5% of the costs, discussed more below.


The prevailing wage and apprenticeship rules generally require a minimum wage for certain workers on a project and a minimum percentage of hours to be performed by qualified apprentices. The rules have long been imposed on infrastructure projects receiving federal funding, but have never before been applied to tax credits. The IRS guidance leans heavily on existing Department of Labor (DOL) rules. Projects that do not meet the requirements will generally only qualify for a credit rate of one-fifth of the full amount available. The maximum $5 per square foot Section 179D deduction is also cut by one-fifth if the rules are not met.


Taxpayers must generally meet the apprenticeship requirements during the construction, alteration, and repair of any applicable facility, property, or equipment. The wage requirements must generally be met during construction, and in some cases, for periods after the facility property, or equipment is placed in service (PIS).


To receive the full credit amount for the following incentives, taxpayers must meet both the prevailing wage and apprenticeship requirements for the time periods specified if construction began after  Jan. 29, 2023: 

  • Section 45 – Production tax credit for renewable electricity (during construction and 10 years after PIS)
  • Section 48 – Investment tax credit for renewable energy property (during construction and five years after PIS)
  • Section 45Q – Credit for carbon oxide sequestration (during construction and 12 years after PIS)
  • Section 45V – Credit for production of clean hydrogen (during construction and 10 years after PIS)
  • Section 30C – Alternative fuel vehicle refueling property credit (during construction)
  • Section 179D - Energy efficient commercial buildings deduction (during installation)
  • Section 45Y - Clean electricity production credit which replaces the Section 45 credit in 2026 (during construction and 10 years after PIS)
  • Section 48E - Clean electricity investment credit which replaces the Section 48 credit in 2026 (during construction and five years after PIS)


The wage and apprenticeship requirements must be met effective on the date of enactment and for the specified time periods for the following credits: 

  • Section 45Z – Clean fuel production credit, which will replace existing fuel credits in 2026 (during construction and for 10 years after PIS unless the facility is placed in service before Jan. 1, 2025, then only for tax years in which the credit is claimed)
  • Section 48C – Advanced energy project, which taxpayers must apply for (while re-equipping, expanding, or establishing a facility)

The following credits only require the prevailing wage rules to be met effective on the date of enactment for the specified time periods: 

  • Section 45L new energy-efficient home credit and the  (during construction, alteration or repair)
  • Section 45U zero-emission nuclear power credit only require prevailing wages effective as of the date of enactment (during any alteration or repair).

Taxpayers planning energy projects can consider analyzing the beginning construction rules to see if near-term projects can avoid the new requirements. Taxpayers who cannot begin construction before Jan. 29 should begin preparing to meet the requirements, which could affect agreements with contractors and require new recordkeeping processes.




Prevailing wage


The prevailing wage rules generally require taxpayers to ensure a minimum prevailing wage is paid to all laborers and contractors employed in the construction, alteration or repair of a facility, property, a project or equipment, either by the taxpayer or a contractor or subcontractor of the taxpayer.



The IRS guidance provides that the prevailing wage is determined under the DOL rules under Subchapter IV of Chapter 31 of Title 40. DOL publishes a list of prevailing wages based on the geographic area, type of construction, and labor classification on If there is no listed labor classification applicable, then taxpayers must rely on DOL rules for requesting a rate. This procedure requires taxpayers to contact the DOL Wage and Hour Division via email at and provide the type of facility, facility location, proposed labor classifications, proposed prevailing wage rates, job descriptions and duties, and any rationale for the proposed classifications.  


To meet the requirements, taxpayers must also “maintain and preserve sufficient records, including books of account or records for work performed by contractors or subcontractors of the taxpayer” in accordance with the general rules and regulations under Section 6001.


Grant Thornton Insight

There is very little guidance in the notice on the documentation requirements besides the cite to Treas. Reg. Sec. 1.6001-1, which provides the general record-keeping requirements for any item on a return. Except for a single example, there is no explicit guidance on the types of records or payroll information that would meet the documentation requirements for these specific rules. The example simply provides that the taxpayer kept “sufficient” records that “include, but are not limited to, identifying the applicable wage determination, the laborers and mechanics who performed construction work on the facility, the classifications of work they performed, their hours worked in each classification, and the wage rates paid for the work other information that will fulfill the documentation requirements.” Taxpayers will likely need to add contractual requirements for paying and documenting prevailing wages in any agreements with contractors and subcontractors.







The apprenticeship rules require the following minimum percentages of total labor hours in the construction, alteration, or repair of a qualified project to be performed by qualified apprentices: 

  • 10% for projects that begin construction before 2023
  • 12.5% for projects that begin construction before 2024
  • 15% for projects that begin construction in 2025 or later (apprenticeship labor hour requirements)


The percentages are also subject to any applicable apprentice-to-journey worker ratios of either the DOL or state apprenticeship agencies.


The rules also generally require any taxpayer, contractor or subcontractor who employs four or more individuals to perform construction, alteration or repair to employ at least one qualified apprentice. The word “employ” includes any individual performing services for remuneration, regardless of whether employee or independent contractor.


Taxpayers can alternatively satisfy the general requirements by making a good faith effort or paying a penalty of $50 per labor hour under the required threshold (or $500 for intentional disregard). The good faith exception requires taxpayers to “request qualified apprentices from a registered apprenticeship program in accordance with usual and customary business practice for registered apprenticeship programs in a particular industry.”


IRS generally defines terms related to the apprenticeship requirements in reference to DOL rules. Taxpayers must also comply with the general recordkeeping requirements of Section 6001 to support compliance with the apprenticeship rules.


Grant Thornton Insight

Like the prevailing wage rules, the IRS provides very little explicit guidance on how to apply the rules or document compliance apart from references to existing DOL and IRS regulations. There is no further information on what will qualify as “usual and customary business practice for registered apprenticeship program in a particular industry” under the good faith exception, and there are no examples of the types of documentation that will be sufficient to establish compliance.




Beginning construction


The new notice generally relies on existing IRS guidance from a series of notices for taxpayers to establish that construction has begun (Notice 2013-29, Notice 2013-60, Notice 2014-46, Notice 2015-25, Notice 2016-31, Notice 2017-04, Notice 2018-59, 2019-43, Notice 2020-41, Notice 2021-5, and Notice 2021-41). This guidance was created for (and will continue to apply) to the credits under Sections 45, 48, and 45Q. The new guidance provides that “similar principles” to those provided under the notices will apply to other credits.


Under the notices, taxpayers can establish that construction has begun by either satisfying a test showing “physical work of a significant nature” has begun or by incurring 5% or more of the total cost of the facility under a safe harbor. Physical work of a significant nature does not include removing existing towers or turbines, and does not include the following preliminary activities: 

  • Planning or designing
  • Securing financing
  • Exploring
  • Researching
  • Obtaining permits
  • Licensing
  • Conducting surveys
  • Environmental and engineering studies
  • Clearing a site
  • Test drilling of a geothermal deposit
  • Test drilling to determine soil condition
  • Excavation to change the contour of the land (as distinguished from excavation for footings and foundations)


Under the 5% safe harbor, taxpayers must pay or incur 5% or more of the total costs of the facility under the rules of Treas. Reg. Sec. 1.461-1. All costs property included in the depreciable basis must be taken into account, and there is a look-through rule allowing taxpayers to use the costs incurred by a contractor (under the principles of Section 461) that is manufacturing, constructing, or producing property under a binding written contract. Taxpayers may generally count payments for property or services toward the safe harbor if they reasonably expect to receive them within 3.5 months of the payment date.


Taxpayers can also aggregate multiple facilities based on the relevant facts and circumstances, but then disaggregate them for applying the placed-in-service deadline for the continuity safe harbor discussed below. Retrofitted energy property can also qualify if the used property represents less than 20% of the value, but only the new property can be used in the calculation of the 5% safe harbor.


Both the 5% safe harbor and the physical work of a significant nature test require taxpayers to make continual progress toward completion once construction is considered to have begun. There is a continuity safe harbor that deems this requirement met if a facility is placed in service within four calendar years of the calendar year in which construction began (six years for carbon capture equipment under Section 45Q and 10 years for some offshore and federal land projects).


Taxpayers who don’t use the continuity safe harbor must generally use a facts-and-circumstances analysis to determine if construction is continual. The following disruptions are excusable:

  • Severe weather conditions
  • Natural disasters
  • Certain licensing and permitting delays
  • Delays at the written request of government for safety, security or similar concerns
  • Transmission interconnection issues
  • Labor stoppages
  • Supply shortages
  • Delays in manufacturing custom components
  • Inability to obtain specialized equipment
  • Financing delays
  • The presence of endangered species


Grant Thornton Insight

The beginning construction rules are generally favorable and allow taxpayers some flexibility in how they aggregate projects and incur costs. There are restrictions, however, and any taxpayers considering establishing that construction has begun before Jan. 29, 2023, should carefully analyze their facts against the rules. Depending on the situation, some taxpayers may want to accelerate the start of construction to meet the tests before the 60-day period closes, if possible.




Next steps


The IRA created unprecedented new opportunities for energy tax incentives that can be leveraged by businesses and tax-exempts across nearly every industry for a variety of activities. The credits can also be monetized in new ways that make them even more accessible. But there are strings attached. The new apprenticeship and wage requirements are critical for receiving the full benefit of the incentives and they will add costs and administrative burdens to projects. Taxpayers should consider adding compliance requirements into contracts and putting processes in place to substantiate their claims. Taxpayers with near-term projects can also consider whether they can establish that construction has begun before Jan. 29.




For more information, contact:

Tax professional standards statement

This content supports Grant Thornton LLP’s marketing of professional services and is not written tax advice directed at the particular facts and circumstances of any person. If you are interested in the topics presented herein, we encourage you to contact us or an independent tax professional to discuss their potential application to your particular situation. Nothing herein shall be construed as imposing a limitation on any person from disclosing the tax treatment or tax structure of any matter addressed herein. To the extent this content may be considered to contain written tax advice, any written advice contained in, forwarded with or attached to this content is not intended by Grant Thornton LLP to be used, and cannot be used, by any person for the purpose of avoiding penalties that may be imposed under the Internal Revenue Code.

The information contained herein is general in nature and is based on authorities that are subject to change. It is not, and should not be construed as, accounting, legal or tax advice provided by Grant Thornton LLP to the reader. This material may not be applicable to, or suitable for, the reader’s specific circumstances or needs and may require consideration of tax and nontax factors not described herein. Contact Grant Thornton LLP or other tax professionals prior to taking any action based upon this information. Changes in tax laws or other factors could affect, on a prospective or retroactive basis, the information contained herein; Grant Thornton LLP assumes no obligation to inform the reader of any such changes. All references to “§,” “Sec.,” or “§” refer to the Internal Revenue Code of 1986, as amended.


More flash