Andrew D. Mullendore
Senior Associate
201 17th Street NW
Suite 1700
Atlanta, GA 30363
Andrew is a tax attorney and licensed CPA who represents businesses, high-net-worth individuals, closely held entities, partnerships, limited liability companies, corporations, and fiduciaries in complex federal and state tax matters. His practice focuses on tax controversy and litigation, guiding clients through every stage of disputes with taxing authorities, from examinations and administrative appeals to civil...
Andrew is a tax attorney and licensed CPA who represents businesses, high-net-worth individuals, closely held entities, partnerships, limited liability companies, corporations, and fiduciaries in complex federal and state tax matters. His practice focuses on tax controversy and litigation, guiding clients through every stage of disputes with taxing authorities, from examinations and administrative appeals to civil tax litigation and government investigations.
Drawing on his background as both a tax attorney and CPA, Andrew develops practical strategies to resolve sophisticated tax issues while helping clients navigate complex procedural and substantive matters. He works with clients nationwide on a broad range of tax controversies involving federal, state, and local taxing authorities.
Andrew has significant experience representing clients in federal and state tax examinations and administrative appeals, including matters involving Employee Retention Credits (ERCs); IRS coordinated campaign issues, including micro-captive insurance arrangements and conservation easements; offshore tax reporting; tax treaty issues; cryptocurrency transactions; tax return preparer audits; trust fund recovery penalties; audit reconsiderations; EFIN suspension and expulsion matters, innocent spouse and equitable relief claims; and IRS criminal investigations.
In addition, Andrew advises clients on a wide range of state and local tax controversies, including sales and use tax, franchise and excise tax, trust fund taxes, residency audits, and state income tax matters across multiple jurisdictions, including Georgia, Alabama, Mississippi, New York, Tennessee, Texas, and others.
tax litigation and government investigations.
Drawing on his background as both a tax attorney and CPA, Andrew develops practical strategies to resolve sophisticated tax issues while helping clients navigate complex procedural and substantive matters. He works with clients nationwide on a broad range of tax controversies involving federal, state, and local taxing authorities.
Andrew has significant experience representing clients in federal and state tax examinations and administrative appeals, including matters involving Employee Retention Credits (ERCs); IRS coordinated campaign issues, including micro-captive insurance arrangements and conservation easements; offshore tax reporting; tax treaty issues; cryptocurrency transactions; tax return preparer audits; trust fund recovery penalties; audit reconsiderations; EFIN suspension and expulsion matters, innocent spouse and equitable relief claims; and IRS criminal investigations.
In addition, Andrew advises clients on a wide range of state and local tax controversies, including sales and use tax, franchise and excise tax, trust fund taxes, residency audits, and state income tax matters across multiple jurisdictions, including Georgia, Alabama, Mississippi, New York, Tennessee, Texas, and others.
Experience
Previous Professional Experience
- Associate, Chamberlain Hrdlicka (2024–2026)
- Associate, DeWitt Law, PC (2022-2024)
Representative Matters
- Obtained a partial summary judgment victory in an issue of first impression regarding the valid and binding insurance contracts in a micro-captive insurance arrangement.
Publications
- Co-Author, Turnover on downs: The IRS’s Rejection of NIL collectives as tax-exempt entities, Sports Business Journal (May 5, 2025)
Education
-
Vanderbilt University Law School,
JD
(2022)
- Managing Editor, Vanderbilt Journal of Entertainment & Technology Law
- Middle Tennessee State University, BBA, Accounting (2016)
Admissions
- Georgia
- Texas
- Tennessee
- Florida
- U.S. District Court for the Western District of Tennessee
- U.S. District Court for the Middle District of Florida
- U.S. Court of Appeals for the Eleventh Circuit
- U.S. Tax Court
Practice Areas
Industries
Previous Professional Experience
- Associate, Chamberlain Hrdlicka (2024–2026)
- Associate, DeWitt Law, PC (2022-2024)
Representative Matters
- Obtained a partial summary judgment victory in an issue of first impression regarding the valid and binding insurance contracts in a micro-captive insurance arrangement.
Publications
- Co-Author, Turnover on downs: The IRS’s Rejection of NIL collectives as tax-exempt entities, Sports Business Journal (May 5, 2025)
Media
Recognitions
- Best Lawyers: Ones to Watch – Litigation and Controversy – Tax (2026, 2027)
- Best Lawyers: Ones to Watch – Tax Law (2026, 2027)
Professional Activities
- AICPA Member
Andrew is a tax attorney and licensed CPA who represents businesses, high-net-worth individuals, closely held entities, partnerships, limited liability companies, corporations, and fiduciaries in complex federal and state tax matters. His practice focuses on tax controversy and litigation, guiding clients through every stage of disputes with taxing authorities, from examinations and administrative appeals to civil... tax litigation and government investigations.
Drawing on his background as both a tax attorney and CPA, Andrew develops practical strategies to resolve sophisticated tax issues while helping clients navigate complex procedural and substantive matters. He works with clients nationwide on a broad range of tax controversies involving federal, state, and local taxing authorities.
Andrew has significant experience representing clients in federal and state tax examinations and administrative appeals, including matters involving Employee Retention Credits (ERCs); IRS coordinated campaign issues, including micro-captive insurance arrangements and conservation easements; offshore tax reporting; tax treaty issues; cryptocurrency transactions; tax return preparer audits; trust fund recovery penalties; audit reconsiderations; EFIN suspension and expulsion matters, innocent spouse and equitable relief claims; and IRS criminal investigations.
In addition, Andrew advises clients on a wide range of state and local tax controversies, including sales and use tax, franchise and excise tax, trust fund taxes, residency audits, and state income tax matters across multiple jurisdictions, including Georgia, Alabama, Mississippi, New York, Tennessee, Texas, and others.
Experience
The following is a selected sampling of matters and is provided for informational purposes only. Past success does not indicate the likelihood of success in any future matter.Previous Professional Experience
- Associate, Chamberlain Hrdlicka (2024–2026)
- Associate, DeWitt Law, PC (2022-2024)
Representative Matters
- Obtained a partial summary judgment victory in an issue of first impression regarding the valid and binding insurance contracts in a micro-captive insurance arrangement.
Publications
- Co-Author, Turnover on downs: The IRS’s Rejection of NIL collectives as tax-exempt entities, Sports Business Journal (May 5, 2025)
Education
-
Vanderbilt University Law School,
JD
(2022)
- Managing Editor, Vanderbilt Journal of Entertainment & Technology Law
- Middle Tennessee State University, BBA, Accounting (2016)
Admissions
- Georgia
- Texas
- Tennessee
- Florida
- U.S. District Court for the Western District of Tennessee
- U.S. District Court for the Middle District of Florida
- U.S. Court of Appeals for the Eleventh Circuit
- U.S. Tax Court
Practice Areas
Industries
- Best Lawyers: Ones to Watch – Litigation and Controversy – Tax (2026, 2027)
- Best Lawyers: Ones to Watch – Tax Law (2026, 2027)
- AICPA Member
Highlights from the Firm’s Insights
