Mary Vaughn

Overview

Mary Vaughn is a Principal in Ryan’s Scottsdale office, where she advises clients on the valuation, assessment, taxation, compliance, and exemptions for property taxes at the state and local level. She works with commercial and industrial property owners across a range of industries, delivering accurate, defensible personal property tax strategies that support effective risk management and consistent outcomes.

With extensive experience spanning both in-house and consulting roles, Mary brings a practical, operational perspective to property tax matters. She has led compliance, appeals, and audit defense programs for large, complex organizations and managed real estate valuation and unclaimed property obligations. Her approach emphasizes disciplined execution, clarity, and accountability, helping clients navigate evolving requirements while achieving sustainable, long-term results.

Education & Qualifications

Master of Legal Studies, Real Estate Law, Arizona State University, Sandra Day O’Connor College of Law*

Master of Business Administration, Northern Arizona University

Bachelor of Science, Business Administration, Accounting and Finance, Northern Arizona University

Experience & Achievements

Principal, Personal Property Tax, Ryan, Scottsdale office

• Advises clients on valuation, compliance, appeals, and exemption matters

• Supports defensible strategies across complex multijurisdictional portfolios

Senior Manager, Property Tax and Unclaimed Property, national Fortune 500 waste company

• Led personal property tax compliance, appeals, and audit defense programs

• Directed real estate valuation, appeals, and enterprise unclaimed property compliance

Property Tax Representative, national convenience store chain

Product Manager / Project Manager, international communications corporation

Client Communications Representative, international computer corporation

Member, Institute for Professionals in Taxation

*Ryan is not a law firm.