California SALT Deduction Proposal Is More Clever Than Helpful

California has never been shy about creative tax policy. Its latest excursion in the state and local tax wars, a proposal to reclassify vehicle sales taxes as licensing fees, is a crafty end-run around federal SALT deduction limitations that’s being pitched as middle-class relief. But it would mainly benefit higher-income Californians.

On paper, it would help taxpayers keep more of their money and allow them to use the higher federal cap on SALT deductions in last July’s tax law. It would also do double rhetorical duty in the current political climate by reducing federal tax revenue collected from California taxpayers.

Even if it worked as advertised and survived legal scrutiny, it would disproportionately benefit higher-income households. A state-level tax credit for vehicle purchases would better help working families afford transportation. And if reducing the share of Californians’ income flowing to Washington is the real goal, shifting the tax burden from individual income taxes into business-level taxes that remain federally deductible would be a smarter solution.

When the 2017 Tax Cuts and Jobs Act put a cap on SALT deductions, high earners in high tax states suddenly felt the full weight of those state and local taxes. So states started looking for workarounds. Some experimented with charitable deduction expansion, while others created pass-through entity taxes designed to bypass the cap at the business level.

The workarounds’ underlying theory was always the same: If Congress restricts deductibility of tax A but B remains untouched, redefine the tax base in a way that shuttles the revenue from A to B.

California’s latest proposal follows that pattern. Under current law, taxpayers must choose between deducting state income taxes or state sales taxes. In California, where income taxes are high, most will opt to deduct income taxes. But that means sales taxes paid on high-cost items—such as cars—are effectively nondeductible federally.

By converting that sales tax into a licensing fee, which is treated as a property tax for federal purposes, lawmakers aim to fold it into the more permissive property tax category. This would allow taxpayers to take greater advantage of their available SALT deduction—today standing at $40,000 for married filers.

It’s a clever policy, but that doesn’t make it durable or equitable.

A refundable, income-targeted state credit tied to vehicle purchases would deliver more predictable benefits to lower- and middle-income households.

Photographer: Apu Gomes/Getty Images

Most lower-income taxpayers take the standard deduction and don’t itemize. After the 2025 tax reform significantly raised the standard deduction, that has likely become truer. If you don’t itemize, you don’t benefit from additional deductions. For millions of taxpayers, whether a vehicle charge is labeled a sales tax or a licensing fee makes no functional difference.

The math is narrow even among taxpayers who do itemize. To benefit from this reclassification, the taxpayer must exist in an economic sweet spot.

First, they need moderately high state and local taxes. Second, those taxes must be high enough that an additional deductible matters, but not so high that they’ve already hit the cap and have no deduction left to use. Third, they must be purchasing a vehicle expensive enough that about 9% of its value produces a meaningful number—and that benefit directly correlates to vehicle price.

Consider, for example, a single filer schoolteacher earning $75,000 per year. Their state income tax bill might be in the mid-four figures. Add property taxes on a modest home, and they remain far below the SALT cap.

If they buy a $25,000 car and pay roughly $2,250 in sales tax, they would only see a small benefit if they itemize. That benefit would be limited by their marginal federal tax rate. At a 22% rate, that’s less than $500—and that wouldn’t account for the cost of preparing an itemized return.

The ideal fit for the proposal would be a taxpayer who earns well into six figures but isn’t ultrawealthy. Take a single filer earning $225,000 with $36,000 in combined state income and property tax. They have $4,000 of room before hitting the cap. If they buy a $60,000 vehicle, and generate roughly $5,400 in tax, the space under the cap becomes valuable. At their federal marginal rate, that could translate into more than $1,500 in tax savings.

So for lower earners, the cap is often irrelevant—many won’t itemize—and the workaround would provide them with minimal benefits. For very high earners who are already capped out, it may not help either. The real winners would be a small group of taxpayers just below the highest income levels.

A refundable, income-targeted state credit tied to vehicle purchases would deliver more predictable benefits to lower- and middle-income households. It wouldn’t need to depend on itemization, wouldn’t be limited by federal marginal rates, and wouldn’t require a definitional contortion act to withstand federal scrutiny.

The reclassification proposal’s logic is framed in part by California being a “donor state”—it sends more to the federal government than it receives in direct spending. But that imbalance is the product of California having a large concentration of high-income earners and the federal income tax being progressive. Reclassifying a vehicle sales tax as a licensing fee wouldn’t meaningfully alter the equation.

The more durable way to change that dynamic absent federal action is to shift how California raises revenue. For example, reducing individual income rates while increasing business-level taxes that are federally deductible would move more of the tax burden into categories that also reduce federal taxable income. Corporate state taxes are deductible against federal corporate income tax. That solution writes itself.

The SALT wars have produced no shortage of ingenuity. The question for California lawmakers is whether policy ingenuity is enough—or whether a targeted middle-class relief system would better serve the state’s long-term fiscal interests.

Andrew Leahey is an assistant professor of law at Drexel Kline School of Law, where he teaches classes on tax, technology, and regulation. Follow him on Mastodon at @andrew@esq.social.

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