Business Details
50+ Years
experience
Your Trusted Accounting Partner in Fairfax, VA
Founded in 1956, Thompson Greenspon is a leading CPA firm headquartered in Fairfax, Virginia, with over 65 years of expertise in tax, audit, accounting, and advisory services. Our mission is to be a trusted partner by delivering proactive, industry-focused solutions tailored to clients' unique needs. With 8 partners and 60 team members, including 70% experienced CPAs, we combine national-caliber resources through our CPAmerica/Crowe Global affiliation with personalized service.Recognized as a Top 400 firm nationally and Top 40 in the Metro DC area, we prioritize client satisfaction, evidenced by high-scoring surveys and Best of Accounting Awards. Our deep roots in government contracting, construction, nonprofits, and professional services are matched by a commitment to community impact and continuous innovation.
Services
Tax Services
Audit & Assurance
Advisory Services
Client Accounting
Employee Benefits Planning
Estate Planning
IRS Representation
Business Planning
Details
- Year established: 1956
Highlights and features
- We have over 65 years of experience in accounting and tax services.
- Our team includes 70% CPAs, exceeding industry expertise standards.
- Recognized as a Top 400 firm nationally by Inside Public Accounting.
- We offer personalized service with access to global resources through CPAmerica/Crowe Global.
- Our client satisfaction scores exceed industry averages, with Best of Accounting Awards.
What people say
Prompt service
Accurate advice
Great confidence
Dependable, courteous
Sustained commitment
Services
Tax Services
Our tax planning and preparation services help businesses and individuals minimize liabilities through strategic income shifting, deferral techniques, and compliance with current regulations. We specialize in corporate, partnership, nonprofit, and estate tax solutions while ensuring adherence to evolving tax laws. Our proactive approach maximizes after-tax income through year-round planning and legislative monitoring.
Audit & Assurance
We provide comprehensive audit, review, and compilation services with tailored assurance levels. Our risk-based audits comply with GAAS standards, including internal control assessments and third-party verification. Reviews offer limited assurance through analytical procedures, while compilations organize financial data without assurance. We also conduct agreed-upon procedures for specialized reporting needs.
IRS Representation
With 75+ years of combined IRS experience, our specialists resolve tax controversies through audit defense, offer-in-compromise negotiations, installment agreements, and levy/lien releases. We handle trust fund recovery penalties, delinquent filings, and penalty abatements while protecting client interests during IRS interactions.
Estate Planning
Our estate planning services include designing dynasty trusts, marital trusts, charitable foundations, and life insurance trusts. We coordinate with legal and financial advisors to minimize estate taxes, ensure asset distribution aligns with client wishes, and prepare necessary gift/estate tax filings for seamless wealth transfer.
Advisory Services
We offer strategic guidance for business formation, succession planning, financial forecasting, and operational efficiency improvements. Our advisors help clients develop growth strategies, implement internal controls, and navigate regulatory requirements across construction, government contracting, and nonprofit sectors.
People
Andrew T. Henderson
CPA
Andrew Henderson provides tax compliance and consulting services with a focus on individual and business tax planning. He specializes in construction industry taxation and serves clients in Northern Virginia.
Carolyn C. Quill
CPA, JD, LL.M.
Carolyn Quill offers expertise in estate planning, trust administration, and tax law. Her legal background enhances her ability to design complex wealth transfer strategies for high-net-worth clients.
Charles F. Helme III
CPA, CGMA
Charles Helme leads audit engagements for government contractors and construction firms. He specializes in compliance with federal acquisition regulations and cost accounting standards.
Eric S. Fletcher
CPA
Eric Fletcher focuses on nonprofit organization accounting and tax compliance. He advises charities on IRS reporting requirements and governance best practices.
Gray K. Coyner
CPA
Gray Coyner provides business advisory services with emphasis on financial statement analysis and internal control improvements for mid-sized enterprises.
Questions
What services does Thompson Greenspon offer?
We provide tax planning, audit assurance, advisory services, client accounting, employee benefits planning, estate planning, IRS representation, and business strategy tailored to your needs.
How does Thompson Greenspon handle tax planning for businesses?
Our proactive tax planning identifies strategies to minimize liabilities through income shifting, deferral techniques, and compliance with evolving regulations.
Can Thompson Greenspon assist with IRS audit representation?
Yes, our specialists with 75+ years of IRS experience handle audits, offers in compromise, installment agreements, and levy releases.
What industries does Thompson Greenspon specialize in?
We focus on government contracting, construction, nonprofits, and professional services with deep sector expertise.
