Mark Miller

Overview

Mark Miller is a Principal in Ryan’s Personal Property Tax practice, based in the Firm’s Keller office. He specializes in business personal property tax valuation, compliance, and appeal strategy, advising companies with complex, multi-state portfolios. With nearly 20 years of experience, including approximately 18 years dedicated to business personal property tax, Mark helps clients navigate increasingly aggressive and inconsistent assessment environments while ensuring accurate, defensible asset valuations.

Mark works closely with organizations across retail, manufacturing, distribution, heavy and light industrial, data centers, hospitality, and office sectors. He partners with tax and finance leaders to reduce over-assessments, manage audit and appeal risk, and implement disciplined compliance processes across jurisdictions nationwide. A Certified Public Accountant and Accredited Senior Appraiser, Mark combines financial expertise with technical valuation knowledge to develop practical strategies that withstand scrutiny. Known for his clear communication and client-focused approach, he translates complex classification and valuation issues into actionable solutions that protect value and strengthen long-term property tax management.

Education and Qualifications

Bachelor of Science in Business Administration in Accounting and Finance, West Virginia University

Certified Public Accountant (CPA), Texas (Ryan is not a CPA firm.)

Certified Public Accountant (CPA), Maryland

Accredited Senior Appraiser (ASA), American Society of Appraisers

Experience and Achievements

Principal, Personal Property Tax, Ryan, Keller office

• Leads business personal property tax consulting and compliance engagements for multi-state portfolios

• Advises clients on valuation, audit defense, and appeal strategy in complex assessment environments

Senior Director, Ryan, Dallas, TX

• Directed client engagements focused on personal property tax strategy and portfolio optimization

• Oversaw valuation analysis and compliance initiatives across multiple jurisdictions

Senior Director, Altus Group, Dallas-Fort Worth Metroplex

• Led complex personal property valuation and appeal engagements across diverse industries

• Managed consulting teams supporting national and multi-state property tax portfolios

Senior Manager, Altus Group, United States

• Directed assessment review and appeal strategy for large-scale asset portfolios

• Provided advisory services on classification and valuation matters

Manager, Altus Group, United States

• Managed client engagements involving valuation analysis and compliance strategy

Manager, SC&H Group, Sparks, MD

• Oversaw property tax consulting engagements and supported client audit and appeal matters

Senior Accountant, SC&H Group, Sparks, MD

• Performed financial reporting, audit support, and valuation-related analysis

Staff Accountant, PwC, Washington DC-Baltimore Area

• Provided audit and accounting services for corporate clients

• Presented formal testimony before local appraisal review boards, successfully defending valuation adjustments

Property Tax Consultant, State and Local Tax Services, national consulting firm

• Streamlined the personal property tax rendition process to improve accuracy and efficiency