Institute on Taxation and Economic Policy

Dylan Grundman O’Neill

Senior Analyst

Dylan Grundman O’Neill

Dylan is the “coach on the floor” of the ITEP state policy team. He provides hands-on analysis and support on tax policy issues to advocates and lawmakers in several states. He also supports and vets the work of ITEP’s other state analysts as they do the same in their states, and he liaises between the state team and the data and model team to ensure quality and consistency in how ITEP models policies and presents data. Dylan also serves on ITEP’s Diversity, Equity, and Inclusion Committee.

Prior to joining ITEP in 2016, he worked as a Fiscal Policy Analyst at OpenSky Policy Institute, which provides research, analysis, education, and leadership around budget and tax policy debates in his home state of Nebraska. Before OpenSky, he worked as a Research Associate at the Center on Budget and Policy Priorities in Washington, D.C., focusing on a range of state fiscal policy issues. He holds a BA in Political Science from Arizona State University and an MA in City and Regional Planning from Cornell University. He lives and works in beautiful Vacaville, California.

 dylan at itep.org

Recent Publications

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North Carolina Tax Proposal Prioritizes Millionaires Over Everyone Else

June 11, 2025 • By Dylan Grundman O'Neill, Miles Trinidad

North Carolina Senators are proposing to yet again ignore the core needs of the majority of North Carolinians in favor of more income tax cuts for the wealthy few. The Senate's budget would take the personal income tax rate to 1.99 percent as soon as 2031 if certain revenue triggers…

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Five Issues for States to Watch in the Federal Tax Debate

June 3, 2025 • By Dylan Grundman O'Neill, Kamolika Das, Marco Guzman, Miles Trinidad, Neva Butkus

This post covers five particularly notable provisions for states: increasing deductions for state and local taxes (SALT) paid, allowing more generous tax write-offs for businesses, offering new avenues for capital gains tax avoidance to people contributing to private school voucher funds, carving tips and overtime out of the tax base,…

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Recent Media Mentions

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Quartz: The $40,000 SALT Goldmine Only the Wealthy Will Actually Get

September 8, 2025 • By Dylan Grundman O'Neill, Nick Johnson

Despite all the political fanfare about helping homeowners, the most hyped tax break in decades is actually a mirage that doesn’t help the vast majority of Americans. Instead, experts say it’s a gift to high-income earners in high-tax blue states.

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Missouri Independent: Proposed Federal Tax Changes could Mean $170M or More Cut to Missouri State Revenues

June 2, 2025 • By Dylan Grundman O'Neill

Along with hundreds of millions in potential new costs for Missouri taxpayers, an analysis of the budget bill backed by Congressional Republicans and President Donald Trump shows it would also cut state revenue as tax changes at the federal level are reflected in state returns.

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