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Unparalleled Expertise, Integrity and Service

Mark Sullivan Consulting specializes in expert IRS representation, audit defense and advisory services for individuals and businesses. Protect your rights and ensure peace of mind with our unparalleled expertise and personalized service.

TAX SERVICES

TAX ACCOUNTING, ADVISORY & PREPARATION

Tax Audit Services at Mark Sullivan Consulting

LITIGATION SERVICES

CIVIL - CRIMINAL

CONSULTING & EXPERT WITNESS 

Litigation Services available at Mark Sullivan Consuliting

TAX RESOLUTION SERVICES

IRS COLLECTIONS, AUDIT & APPEALS ISSUES

Tax Controversy Services at Mark Sullivan Consulting

TRANSPORTATION INDUSTRY CONSULTING

TRUCKER PER

DIEM ISSUES

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