Are Union Dues Tax Deductible? What Construction Contractors and Workers Need to Know
Union dues are a fact of life for contractors and workers on union jobsites. Whether those dues are deductible at tax time is a question that comes up every filing season, and the answer changed significantly after 2017 and then changed again in 2025. For construction workers filing W-2s and contractors managing union payroll, understanding the current rules prevents costly mistakes on returns and keeps payroll deduction codes set up correctly.
The short answer for 2026: union dues are not deductible on federal income tax returns for most W-2 employees. The longer answer involves a few important exceptions, state-level variations, and a distinction between what workers can deduct and what contractors can deduct as employers. Consult a qualified tax professional for guidance specific to your situation, as tax laws are subject to change and individual circumstances vary.
Federal Tax Rules on Union Dues for Construction Workers and Contractors
Prior to 2018, union members who itemized their federal tax returns could deduct union dues as a miscellaneous itemized deduction on Schedule A, subject to a 2% adjusted gross income (AGI) floor. The Tax Cuts and Jobs Act (TCJA) of 2017 suspended that entire category of deductions for tax years 2018 through 2025. Many union workers expected the deduction to return in 2026 when the TCJA provisions were set to expire.
The deduction did not come back. The One Big Beautiful Bill Act (P.L. 119-21), signed into law in July 2025, removed the sunset date from Internal Revenue Code Section 67(g), making the elimination of miscellaneous itemized deductions, including union dues, permanent. For W-2 construction workers, union dues paid to locals, international unions, or trade councils are no longer deductible on federal tax returns, and no scheduled date exists for the deduction to return under current law.
Who Can Still Deduct Union Dues on a Federal Return
While the general federal deduction is gone for W-2 employees, two narrow categories of filers can still claim union dues.
Self-employed construction workers. Independent contractors and sole proprietors who pay union dues as part of their business operations can deduct those dues as an ordinary and necessary business expense on Schedule C (Form 1040). For a self-employed electrician or pipefitter who maintains union membership to access work through the hiring hall, the dues are a direct cost of doing business and remain fully deductible.
Certain statutory employees. Qualified performing artists, fee-basis state and local government employees, and Armed Forces reservists can still deduct unreimbursed business expenses, including union dues, using Form 2106. Most construction workers do not fall into these categories.
For the vast majority of union construction workers who receive a W-2, the federal deduction is not available.
State-Level Deductions That May Still Apply
Even though the federal deduction is gone, some states did not conform to the TCJA and still allow workers to deduct union dues on their state income tax returns. State rules vary significantly, and eligibility typically requires itemizing on the state return rather than taking the state standard deduction. For union construction workers in states that allow the deduction, the savings depend on the state's tax rate and the total dues paid during the year. Union dues in construction typically range from 1% to 2% of gross wages, which can amount to several hundred to over a thousand dollars annually for full-time workers.
States that generally allow union dues deductions include:
New York: Allows an itemized deduction for union dues on state returns
California: Did not conform to the TCJA; union dues may be deductible on state returns
Pennsylvania: Typically allows employees to deduct union dues from state income
Minnesota: Generally allows residents to deduct union dues on state returns
States with no income tax (Texas, Florida, Washington, Nevada, Wyoming, Tennessee, South Dakota, Alaska, New Hampshire) do not have a state return on which to claim the deduction. Most other states have conformed to the federal TCJA and do not allow the deduction.
For contractors running multi-state payroll, understanding which states allow the deduction matters for employee communications, not for payroll withholding. The deduction is claimed on the employee's state return, not through payroll.
How Union Dues Work in Construction Payroll
Union dues are typically withheld from employee paychecks as after-tax deductions. Federal income tax, state income tax, Social Security, and Medicare are calculated first on the gross wage, then union dues are subtracted from the remaining amount.
Because the dues are not deductible at the federal level, they do not reduce taxable wages for income tax purposes. Payroll teams should verify that union dues deduction codes are set up as after-tax, not pre-tax, in the payroll system. A misconfigured deduction code that treats dues as pre-tax would understate federal taxable wages and create withholding errors that compound across every pay period until caught. For contractors managing crews across multiple union locals, each with different dues structures, the configuration needs to be correct per local and per worker.
Employers may choose to report union dues in Box 14a of the W-2. Box 14 is an informational field used for items that do not have a dedicated box elsewhere on the form. Reporting union dues in Box 14 is optional but helpful for workers who need to verify total dues paid for state tax returns or personal records.
A construction payroll system that handles union deductions alongside prevailing wage calculations, fringe benefit contributions, and multi-state withholding ensures that dues are processed correctly without manual adjustments each pay period.
What Contractors Can Deduct on the Employer Side
The rules for employers are different from the rules for employees. Union dues paid by workers are not deductible on the worker's federal return, but employer obligations related to union labor are treated as deductible business expenses for the contractor.
Employer-side costs that remain deductible include:
Fringe benefit fund contributions. Employer contributions to union health, pension, annuity, vacation, and training trust funds, made per the collective bargaining agreement, are deductible as ordinary business expenses.
Workers' compensation premiums. Premiums paid on union and non-union employees alike are deductible business expenses.
Employer payroll taxes. The employer's share of Social Security, Medicare, and federal and state unemployment taxes on union workers' wages is deductible.
The distinction matters: worker-side union dues are not deductible for the worker, but employer-side labor costs, including CBA-mandated fringe contributions, remain fully deductible for the contractor.
How to Keep Union Dues Records Organized
Even though the federal deduction is not available for W-2 workers, maintaining accurate records of union dues paid throughout the year is still important for several reasons. Workers in states that allow state-level deductions need documentation to support their claim. Self-employed workers deducting on Schedule C need clear records separating dues from personal expenses. And in the event of a payroll audit or workers' comp review, accurate records of all deductions, including union dues, help demonstrate that payroll was processed correctly.
For contractors, clean records of union dues withheld per employee support accurate W-2 reporting, fringe benefit reconciliation, and audit readiness. A payroll and HR system that tracks union membership status, dues withholding, and CBA-specific deductions for each worker in one place reduces the year-end reconciliation burden when W-2s are generated.
Handle Union Payroll Complexity in One System
Trayd processes union dues deductions, fringe benefit contributions, prevailing wage calculations, and multi-state withholding in a single construction payroll platform. When union deduction codes, CBA rate schedules, and worker classifications are managed in the same system that runs payroll, the data stays clean through every pay period without manual workarounds. Schedule a demo to see how union payroll works in Trayd.
Frequently Asked Questions
Are union dues tax-deductible in 2026?
For W-2 employees, no. The One Big Beautiful Bill Act made the elimination of the federal union dues deduction permanent starting in 2026. Self-employed workers can still deduct union dues on Schedule C as a business expense, and some states allow deductions on state tax returns.
Why did union dues stop being deductible?
The Tax Cuts and Jobs Act of 2017 suspended the deduction for miscellaneous itemized deductions, including union dues, for tax years 2018 through 2025. The One Big Beautiful Bill Act, signed in July 2025, removed the sunset date, making the suspension permanent.
Can self-employed construction workers deduct union dues?
Yes. Independent contractors and sole proprietors who pay union dues as a necessary business expense can deduct them on Schedule C of their federal tax return. The TCJA and OBBBA restrictions apply only to W-2 employees claiming miscellaneous itemized deductions.
Which states still allow union dues deductions?
New York, California, Pennsylvania, and Minnesota generally allow union dues deductions on state income tax returns. Rules and eligibility vary by state. Workers should check their state tax authority's guidance or consult a tax professional for specifics.
Are union dues withheld pre-tax or after-tax in construction payroll?
Union dues are withheld after-tax. Federal income tax, state taxes, and FICA are calculated on gross wages first, then union dues are subtracted. Payroll teams should verify that deduction codes are set up as after-tax to avoid understating taxable wages.
Can construction contractors deduct union-related costs as business expenses?
Yes. Employer contributions to union trust funds (health, pension, training), workers' compensation premiums, and employer payroll taxes on union workers' wages are all deductible as ordinary business expenses. The restriction on deductibility applies to worker-side union membership dues, not employer-side labor costs.
References
Internal Revenue Service. "General Instructions for Forms W-2 and W-3 (2026)." irs.gov
Internal Revenue Service. "Instructions for Schedule C (Form 1040)." irs.gov
Internal Revenue Service. "Can I Claim My Expenses as Miscellaneous Itemized Deductions on Schedule A?" irs.gov
One Big Beautiful Bill Act (P.L. 119-21), Section 70110. July 2025.
