Partnering With You for Your Success

Your success is our goal.  At Thompson Greenspon we offer award-winning service and pro-active solutions, customized to meet your specific tax, audit, accounting and consulting needs.

Personal relationships are important to us. Since our founding in 1956, the firm has advanced the goal of having you work with the same dedicated team members year after year.  As one of the largest CPA firms in the DC metro area, we deliver industry-leading expertise that is competitive with national and regional firms.

Industries we have specialized in since 1956:

Whether you need estate or succession planning, or accounting, auditing, or tax assistance, Thompson Greenspon can help you succeed.

Whether you are looking for assistance with your overhead rate, an audit of your financial statement, or with day-to-day accounting services, we can assist you.

While you focus on supporting your mission, let our tax advice and creative solutions help you achieve your financial goals. 

When you need help with tax or business planning, draw on our decades of expertise. While you serve your clients or patients, we will take care of your needs.

Click below to be put in touch with a CPA who specializes in your industry.

Our Services Include:
TAXES

Tax Center

Planning ahead and saving you money on income taxes, trust and estates, payroll, and more.

View our Tax Services ›

FINANCES

Financial Reporting & Assurance

Offering a wide range of assurance services, audits and business assistance.

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CONSULTATION

Advisory Services

Expert guidance when you start a business, sharpen your strategic plan, or plan for succession.

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ACCOUNTING

Outsourced Accounting

Focus on your big goals, not your bookkeeping. Don’t think twice about payroll, taxes, financials, and more.

View our Accounting Solutions ›

EMPLOYEE BENEFITS

Employee Benefits Planning & Audits

By listening closely to your needs, we can help you ensure you have a solid plan in place and assist you by auditing your plan to meet regulatory requirements.

Discover How We Can Serve Your Organization ›

Industry Insights:
two construction cranes holding signs

Should You Reconsider Your Entity Choice?

The Tax Cuts and Jobs Act has many construction company owners thinking about converting their pass-through entities to C corporations. Although some businesses may benefit from doing so, the decision isn’t just a matter of comparing the previous top corporate tax rate with the current one. This article reviews key factors to consider.

Read More »
Tax Cuts and Jobs Act: Planning Can Help Your Nonprofit Minimize Negative Effects
Months after the Tax Cuts and Jobs Act (TCJA) was signed into law, nonprofits are still trying to assess its consequences. Some of the early proposals that raised alarms in...
Succession Planning: Look at Things from a Surety’s Perspective
A well-designed succession plan is critical to the long-term survival of a construction business. In developing one, it’s important to consider the objectives and needs of your company’s owners as...
Time and Materials Contracts: Improper Labor Classification is Risky
Improper labor category classification under U.S. government time and materials (T&M) contracts can result in cost disallowance, investigation, fines -- and even jail time. (more…)
We are proud recipients of the following awards and recognitions: