WASHINGTON — As annual federal budget deficits rapidly approach the $2-trillion-per-year mark, lawmakers from both sides of the aisle are increasingly eyeing the federal tax code to generate essential revenue, stabilize the national debt, and fund core government programs. Amid this fiscal pressure, the Tax Foundation has released a comprehensive new resource, Options for Reforming America’s Tax Code 3.0: A Policymaker’s Guide to Tax Reform Trade-Offs, modeling the economic, distributional, and revenue effects of 86 distinct modifications to the nation’s tax laws.
Out of these 86 proposals, 52 are specifically designed to reduce federal budget deficits on a dynamic scoring basis over a 10-year window. However, the report underscores a fundamental economic reality: not all tax increases are created equal. While two distinct tax changes may raise identical amounts of revenue on a conventional, static basis, one may inflict severe damage on the nation’s gross domestic product (GDP) and employment, while another preserves economic growth, simplifies compliance, and restores neutrality to a convoluted tax system.
Main Facts: The Anatomy of Tax Reform Trade-Offs
The Tax Foundation’s latest modeling underscores that lawmakers face severe strategic choices. The U.S. tax code is frequently utilized not just to collect revenue, but to incentivize social and economic outcomes—from homeownership and clean energy adoption to employee healthcare and municipal infrastructure projects. However, these carve-outs narrow the tax base, necessitating higher tax rates overall to collect the same amount of money.
A narrow tax base is inherently non-neutral and inefficient, driving up administration costs and complicating compliance. Conversely, broadening the tax base by eliminating exemptions and credits allows the government to raise substantial revenue at lower, less economically damaging rates.
To help Congress navigate these choices, the Tax Foundation’s guide evaluates five prominent revenue-raising options, comparing them directly against alternative paths to demonstrate their relative economic impact.
Chronology and Legislative Context: The Evolution of Federal Revenue Pressures
The debate over structural tax reform arrives at a critical historical juncture for U.S. fiscal policy.
- 1913: Congress establishes a permanent individual income tax with the ratification of the 16th Amendment. Simultaneously, the tax-exempt status of municipal bond interest is codified, creating a century-long precedent for localized borrowing.
- 1956: Congress creates the Highway Trust Fund (HTF) under President Dwight D. Eisenhower to finance the burgeoning interstate highway system through federal fuel excise taxes.
- 1993: The federal gas tax is last adjusted for inflation, remaining frozen at 18.4 cents per gallon for regular gasoline. Over the next three decades, persistent underfunding leads to structural HTF shortfalls, necessitating frequent general fund bailouts.
- 2025–2026: The enactment of the One Big Beautiful Bill Act of 2025 establishes a new limit on itemized deductions starting in 2026, capping their value at 35 percent for taxpayers in the top 37 percent bracket.
- August 2026: The Tax Foundation releases its General Equilibrium Model projections, highlighting how lawmakers can address widening structural deficits approaching $2 trillion annually without crippling post-pandemic economic momentum.
Supporting Data: Five Revenue Options and Their Economic Trade-Offs
The Policymaker’s Guide to Tax Reform Trade-Offs details specific pathways for deficit reduction. Below are five core proposals evaluated by the Tax Foundation’s economic model for the 2027–2036 budget window.
1. Eliminating the Income Tax Exclusion for Other Employer Fringe Benefits (Option 32)
- The Policy: While standard wages and salaries are fully taxed, many employer-provided fringe benefits—ranging from on-site gyms and employee discounts to student loan repayment assistance—are excluded from federal income taxes. This option eliminates that exclusion, treating these benefits as taxable income.
- Revenue & Economic Impact: On a dynamic basis, this option decreases the primary deficit by $396.8 billion from 2027 through 2036.
- The Trade-Off: Compare this to raising the top marginal individual income tax rate to 50 percent. While both raise revenue, a 50 percent top marginal rate results in a much larger drop in GDP and a sharper decline in labor supply. Broadening the base via fringe benefits achieves similar revenue targets with significantly less economic friction.
2. Repealing the Low-Income Housing Tax Credit and the New Markets Tax Credit (Option 76)
- The Policy: The Low-Income Housing Tax Credit (LIHTC) and New Markets Tax Credit (NMTC) have enjoyed long-standing bipartisan support to spur community development and affordable housing construction. However, nonpartisan experts frequently criticize LIHTC for high per-unit building costs and administrative complexity. This option repeals both credits, broadening the business tax base.
- Revenue & Economic Impact: Dynamically reduces the primary deficit by $202.7 billion (2027–2036).
- The Trade-Off: This reform is contrasted with capping the business State and Local Tax (SALT) deduction. While capping business SALT also broadens the base, it triggers a much steeper reduction in GDP and massive job losses. Targeting narrow, inefficient credits raises more dynamic revenue than denying all businesses a widely claimed tax deduction.
3. Eliminating the Income Tax Exclusion for Municipal Bond Interest (Option 29)
- The Policy: Interest earned on savings is normally taxable, but municipal bond interest has enjoyed an income tax exclusion since 1913. This allows local and state governments to borrow at lower interest rates. However, it violates tax neutrality by favoring municipal debt over corporate bonds or U.S. Treasuries.
- Revenue & Economic Impact: Dynamically reduces the primary deficit by $155.2 billion (2027–2036).
- The Trade-Off: When compared to outright elimination of the SALT deduction, ending the muni bond exclusion is notably less harmful. Eliminating SALT directly increases marginal tax rates on labor income, pass-through businesses, and owner-occupied housing investment, whereas ending the muni bond exemption primarily shifts financing costs for local infrastructure.
4. Tightening the Limitation on Itemized Deductions (Option 24)
- The Policy: Following the 2025 tax changes capping itemized deductions at 35 percent for top earners, this option tightens the cap further to 28 percent. This encourages high-income taxpayers to pivot toward the simpler standard deduction while broadening the tax base.
- Revenue & Economic Impact: Dynamically reduces the primary deficit by $139.0 billion (2027–2036).
- The Trade-Off: This option is vastly preferable to taxing capital gains and dividends at ordinary income tax rates. While both target affluent taxpayers, tightening itemized deductions preserves investment incentives and inflicts far less collateral damage on capital formation than hiking rates on capital gains.
5. Introducing a Vehicle Miles Traveled Tax (Option 79)
- The Policy: The federal Highway Trust Fund faces chronic deficits because the gas tax has remained static since 1993, while the rapid adoption of electric and hybrid vehicles means millions of drivers utilize roads while paying little to no gas tax. This option repeals federal gas and diesel taxes, replacing them with a vehicle miles traveled (VMT) tax weighted by vehicle mass (approx. 0.9 cents per mile for passenger cars; 10.6 cents per mile for freight trucks).
- Revenue & Economic Impact: Dynamically reduces the primary deficit by $133.7 billion (2027–2036).
- The Trade-Off: While increasing the federal gas tax from 18.4 cents to 28 cents per gallon raises more upfront cash over a strict 10-year window, it causes heavier job losses and fails to solve the long-term structural crisis posed by the electrification of the American fleet.
Official Responses and Stakeholder Perspectives
As the fiscal debate intensifies in Washington, policymakers, think tanks, and industry associations are weighing the Tax Foundation’s models against competing priorities.
Congressional budget analysts note that while closing loopholes and broadening the tax base is theoretically sound, political resistance remains fierce. Beneficiaries of popular exemptions—such as municipal bond issuers, labor unions defending fringe benefits, and affordable housing advocates—routinely mount aggressive bipartisan defenses to protect existing tax carve-outs.
Conversely, free-market economists and fiscal conservatives have praised the Tax Foundation for prioritizing dynamic scoring. By demonstrating how certain revenue-raisers actively preserve economic output while others penalize investment and employment, the report provides a vital roadmap for fiscal responsibility.
"All tax policies involve trade-offs, and those trade-offs are growing increasingly painful as national debt and deficits soar past historic norms," notes the Tax Foundation in its summary analysis. "Not all revenue raisers are created equal. Congress must carefully weigh core tax principles—simplicity, neutrality, transparency, and stability—alongside macroeconomic realities."
Implications: The Road Ahead for Federal Tax Reform
The release of Options for Reforming America’s Tax Code 3.0 arrives at a pivotal moment. With major provisions of prior tax legislation expiring or coming under legislative review, federal lawmakers face mounting pressure to produce sustainable revenue streams.
If Congress attempts to close deficits solely through blunt instruments—such as drastically hiking marginal income tax rates, taxing capital gains at ordinary rates, or restricting vital business deductions indiscriminately—the macroeconomic fallout could trigger slower growth, reduced capital investment, and job contraction.
Instead, the Tax Foundation’s modeling demonstrates that structural modernization—such as transitioning highway funding to a modern VMT system, eliminating non-neutral fringe benefit carve-outs, and targeting inefficient boutique tax credits—can secure the nation’s fiscal future while safeguarding the broader American economy. Whether Capitol Hill has the political appetite to enact these economically sound, structural reforms remains the defining question for the next era of American tax policy.
