How Federal Taxes Affect Local Schools and Public Services, Explained in Q&A

UNIVERSITY PARK, Pa. — A quiet tax policy shift is rippling through local democracy. When the enhanced federal standard deduction became permanent, many Americans stopped itemizing state and local taxes—especially property taxes—and the resulting loss of a federal write-off changed what voters were willing to fund at the ballot box.

The change traces back to the Tax Cuts and Jobs Act, implemented in 2018, which roughly doubled the standard deduction. For households that no longer exceeded the standard threshold, itemizing effectively disappeared from their tax strategy. That matters because property taxes can be deducted federally, acting like a built-in subsidy for homeowners who itemize.

Researchers from Penn State and ETH Zürich focus on the downstream consequences of losing that subsidy. Their paper, published in The Review of Economics and Statistics, examines how federal deductibility influences local public finance decisions—specifically, the demand for schools and infrastructure funded by local referendums.

California provides a natural stress test. School districts often rely on bond measures, repaid through local property tax revenues. The study finds that after deductibility fell, voters became measurably less supportive of these bond proposals, even though local tax rates were unchanged.

Using data from more than 1,500 California school district referendums between 2008 and 2022, the authors estimate that a one-percentage-point decline in residents who were still deducting property taxes corresponded to just under a one-percentage-point drop in school bond approval rates. While the numbers seem modest, the cumulative effect is large.

Before the 2018 policy shift, school measure approval hovered around 81%. Afterward, it fell to about 62%, explaining much of the post-change surge in defeated school proposals. The pattern suggests voters respond to price signals embedded in their personal tax bills.

To probe alternative explanations, the team compared outcomes across referendum types. City measures, typically financed through sources that are not federally deductible in the same way, showed no comparable decline. The school-only effect points to the tax mechanism rather than a broad anti-government sentiment.

The paper also checks whether pandemic-era school disruptions were driving the results; COVID-related factors did not account for the decline. Instead, the change appears concentrated among middle-income communities that lost deductibility, widening between rich and poor areas in the perceived affordability of local investments.

At the policy level, the findings complicate debates over SALT. Even when arguments focus on income distribution, the SALT deduction operates as a federal subsidy for local public goods—shaping educational outcomes and potentially influencing long-run community investment capacity.

News Publication Date: Not provided.

Web References: https://doi.org/10.1162/rest_a_01427

References: The Review of Economics and Statistics (paper at DOI above).