Colorado
Penn Pfiffner is Chairman of the TABOR Committee, former Colorado legislator, and founder of Construction Economics, dedicated to protecting taxpayer rights.
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Penn Pfiffner is Chairman of the TABOR Committee, the organization dedicated to protecting the Taxpayer's Bill of Rights - Colorado's constitutional amendment that requires voter approval for tax increases. He has been one of the most consistent defenders of TABOR since its passage in 1992.
Pfiffner brings unique credibility to taxpayer advocacy as a former Colorado state legislator who understands how government operates from the inside. His legislative experience informs his ability to identify and expose attempts to circumvent TABOR's protections.
In addition to his advocacy work, Pfiffner is the founder of Construction Economics, a business that combines his professional expertise with his understanding of policy impacts on the business community. This dual role as business owner and policy advocate gives him practical perspective on how tax and fiscal policies affect Colorado's economy.
Through the TABOR Committee, Pfiffner has monitored government compliance with the constitutional amendment and exposed violations of its spirit, such as designating buildings rather than liquid assets as emergency reserves. His work ensures taxpayers have a watchdog protecting their constitutional right to vote on tax increases.
June 17, 2026
Ballot Measures & TABOR
Penn Pfiffner on the ballot measures that would gut TABOR, Mike Rawluk on water surcharges, and Trent Loos on who controls the water. June 17, 2026.
“So between the two of these two measures, we're going to see taxes in Colorado go up by $3 billion a year or more.”
May 27, 2020
Ballot Measures & TABOR
Kim Monson examines Colorado's TABOR protections against emergency taxes with Penn Pfiffner and discusses district attorney elections with Matt Durkin on May 27, 2020.
“So the Taxpayers' Bill of Rights was written in a very comprehensive way, and it is more than just voting on whether taxes go up. And very intelligently, it anticipated that at some point the state would have to face problems.”
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