Candice Horbacz
The Tax Foundation’s latest publication, Options for Reforming America’s Tax Code 3.0: A Policymaker’s Guide to Tax Reform Trade-Offs, offers an extensive analysis of 86 potential modifications to the nation’s tax framework, meticulously modeling their economic, distributional, and revenue implications. Central to this comprehensive review is a detailed examination of four specific tax cuts introduced under the One Big Beautiful Bill Act (OBBBA) that are slated to sunset after 2028. These provisions—the enhanced senior deduction, the overtime deduction, the tips deduction, and the auto loan interest deduction—represent a significant crossroads for policymakers contemplating their extension amidst persistent calls for tax simplification and fiscal prudence.
The Looming Sunset: A Critical Juncture for U.S. Tax Policy
The legislative landscape surrounding these "no tax on" provisions is characterized by a unique blend of bipartisan support, despite their inherent complexities and substantial fiscal costs. Both former President Donald Trump and various members of Congress across the political spectrum have voiced support for making these deductions permanent. However, the Tax Foundation’s analysis highlights that extending these four provisions alone would collectively increase the primary federal deficit by an estimated $577.3 billion over the decade spanning 2027 to 2036. This figure, while significant, is notably less than the sum of their individual costs due to interactive effects within the tax code, underscoring the intricate nature of tax policy adjustments.
Beyond the immediate budgetary impact, the report raises critical concerns regarding the deductions’ contribution to tax code complexity and non-neutrality. Such narrowly tailored provisions often serve as precedents, inspiring further "carveout" proposals that can exacerbate existing inefficiencies and compliance burdens. The upcoming expiration presents an opportunity for Congress to either solidify these targeted benefits or pivot towards broader, more principle-based reforms that prioritize simplicity, neutrality, and economic efficiency.
The Genesis of "No Tax On": The One Big Beautiful Bill Act (OBBBA)
The deductions under scrutiny were enacted as part of the One Big Beautiful Bill Act (OBBBA), a comprehensive legislative package passed in recent years, designed to stimulate various sectors of the economy and provide targeted relief to specific demographic groups. While the precise details of OBBBA’s enactment are part of ongoing legislative discussions, its core objective was to introduce a series of tax incentives and cuts aimed at bolstering economic activity and easing financial pressures on households. These four deductions, effective from 2025 through 2028, were introduced with specific expiration dates, setting the stage for the current debate. This phased implementation allowed for an initial period of benefit while providing a legislative mechanism for future review and potential adjustment.
The Tax Foundation, an independent non-profit tax policy research organization, plays a crucial role in this discussion by providing data-driven analysis to inform policymakers and the public. Established in 1937, its mission is to improve lives through smart tax policy, emphasizing principles of simplicity, transparency, neutrality, and stability. Its Options series is a cornerstone of this effort, offering a rigorous, non-partisan assessment of tax reform proposals. The organization’s analysis is particularly pertinent given the current national debt exceeding $34 trillion and persistent annual deficits, which lend added weight to any proposal involving significant revenue loss. The expiration of these OBBBA provisions aligns with a broader expiration of other significant tax cuts from earlier legislation, creating a "tax cliff" scenario that intensifies the pressure on Congress to make consequential decisions.
Diving Deeper: An Examination of Each Expiring Deduction
The Tax Foundation’s report meticulously dissects each of the four OBBBA deductions, revealing their specific mechanics, costs, and policy implications.
1. Overtime Pay Deduction: Incentivizing Extra Effort or Complicating the Code?
Option 34 in the Tax Foundation’s guide focuses on making permanent the deduction for overtime pay. Currently, from 2025 through 2028, individual taxpayers can deduct up to $12,500 of qualified overtime pay annually ($25,000 for married couples filing jointly). A critical nuance of this deduction is that it applies only to the "half" portion of time-and-a-half overtime pay mandated by the Fair Labor Standards Act (FLSA). For instance, if an employee earning $20 an hour works 10 hours of overtime, earning $30 per hour for those hours, only the "extra" $10 per hour (the half portion) would potentially qualify for the deduction, up to the annual limit. This specific calculation method was intended to target the incremental income from overtime rather than the base wage component.
This deduction is accessible to both itemizers and non-itemizers, broadening its reach, but it begins to phase out for single filers with modified adjusted gross income (MAGI) exceeding $150,000 and for joint filers above $300,000. This phase-out mechanism introduces additional complexity, as taxpayers falling within this range experience an effective marginal tax rate increase, creating disincentives for earning more once the threshold is crossed.
Fiscal and Economic Ramifications:
Making the overtime deduction permanent would represent a substantial fiscal commitment, increasing the primary deficit by an estimated $372.4 billion over the next decade on a conventional basis. To put this in perspective, this amount is comparable to significant annual federal spending on various departments or programs. From an economic perspective, the Tax Foundation projects a modest long-run increase in the economy’s size by 0.1 percent. This growth is primarily attributed to lower marginal tax rates for eligible workers who are not within the phase-out range, theoretically incentivizing more overtime work. However, the presence of the phase-out dampens the overall positive economic effect by raising marginal rates for a segment of higher-earning workers, leading to what economists call "deadweight loss" where productive activity is discouraged.
Operational Challenges and Neutrality Concerns:
The overtime deduction has been a source of considerable confusion for both workers and employers. Questions abound regarding what constitutes "qualified overtime pay," especially given the various forms of overtime compensation that exist beyond the basic FLSA mandate (e.g., salaried non-exempt employees, different state overtime laws, contractual overtime rates). This ambiguity creates significant administrative burdens for businesses in payroll processing and reporting, and compliance challenges for taxpayers who may struggle to correctly calculate their deductible amount. The IRS has also faced challenges in providing clear guidance, as noted by tax practitioners in publications like Tax Notes.
Furthermore, the deduction significantly compromises tax code neutrality. It creates a disparity where two individuals earning the same total annual compensation may face different tax liabilities if one’s income includes a substantial portion of qualifying overtime pay while the other’s does not. This distorts economic decisions, potentially leading employers to structure compensation in ways that maximize the deduction rather than optimizing for productivity or market efficiency. Critics argue that a truly neutral tax system would tax all forms of labor income equally, regardless of how it is earned, avoiding the creation of tax preferences that favor specific work arrangements.
2. Auto Loan Interest Deduction: Driving Sales or Creating Tax Imbalances?
Option 36 examines the proposal to make permanent the deduction for interest paid on certain auto loans. Currently available from 2025 through 2028, this provision allows taxpayers to deduct up to $10,000 in interest annually. However, the deduction is not universally applicable. It carries specific restrictions: the loan must be for a new vehicle, and critically, the final assembly of the vehicle must occur in the United States. This latter requirement reflects a clear policy intent to support domestic manufacturing and employment within the automotive sector, aligning with "Buy American" initiatives.
Similar to the overtime deduction, this provision is available to both itemizers and non-itemizers, broadening its accessibility. The deduction begins to phase out when a single filer’s MAGI exceeds $100,000, and for joint filers, the threshold is $200,000. This threshold is lower than that for the overtime deduction, suggesting it targets a different income bracket of beneficiaries.
Fiscal and Economic Implications:
Extending the auto loan interest deduction permanently would add an estimated $33.7 billion to the primary deficit over a decade. While it aims to reduce marginal tax rates for eligible borrowers, thereby potentially stimulating new vehicle purchases, the Tax Foundation’s analysis suggests that any positive economic effects would be largely offset by the marginal tax increases experienced by taxpayers within the phase-out range. Consequently, a permanent auto loan interest deduction is projected to decrease the long-run size of the economy by less than 0.05 percent, indicating a negligible or slightly negative overall economic impact. The limited impact suggests that the deduction’s influence on overall consumer behavior or the broader automotive market is minimal compared to other economic factors like interest rates, fuel prices, or consumer confidence.
Compliance Headaches and Inequitable Treatment:
The auto loan interest deduction has generated substantial administrative difficulties. Auto lenders have publicly expressed concerns about the complexity of complying with the law’s reporting obligations, particularly the requirement to verify a vehicle’s final assembly location. This often requires access to detailed manufacturing data or VIN decoding, placing a significant burden on financial institutions and creating confusion for consumers attempting to ascertain eligibility. Reports from Tax Notes and other industry publications have detailed calls from banking and credit union associations for clearer guidance from the IRS on these compliance requirements.
From a tax policy standpoint, the deduction contributes to an "uneven patchwork" in the tax code. While certain forms of interest, such as qualified mortgage interest and student loan interest, are deductible, other common forms of consumer interest, like credit card interest, are not. Adding auto loan interest to this selective list further complicates the code and raises questions of fairness and economic neutrality. Why should interest on a new car, assembled domestically, be deductible, while interest on a used car, a foreign-assembled car, or other significant consumer purchases is not? Such distinctions can distort consumer spending patterns and favor specific industries over others, rather than creating a level playing field.
3. Enhanced Senior Deduction: Targeted Relief or Added Complexity?
Option 33 addresses the enhanced senior deduction, a provision active from 2025 through 2028, allowing taxpayers aged 65 and over to claim an additional $6,000 deduction. This deduction, like the others, is available to both itemizers and non-itemizers, and it begins to phase out for single filers with MAGI above $75,000 and for joint filers above $150,000. It is currently scheduled to expire in 2029, a year after the other three deductions, which adds another layer of chronological complexity.
Fiscal and Economic Outlook:
Making this enhanced senior deduction permanent would increase the primary deficit by an estimated
