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.

FINANCES

Financial Reporting & Assurance

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

CONSULTATION

Advisory Services

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

ACCOUNTING

Outsourced Accounting

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

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.

Industry Insights:
2020 tax filing due dates

2020 Tax Filing Due Dates

Mark your calendars!  The calendar year 2020 due dates for Tax Year 2019 tax returns is now available.  For 2019 filings only two date filing dates have been adjusted for weekend occurrences. Whenever a regular tax filing date falls on a Saturday, Sunday, or a legal observed holiday in the District of Columbia, the due…

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Tax reform has expanded availability of accounting methods Almost a year ago, the Tax Cuts and Jobs Act (TCJA) was signed into law. It may be best known for slashing...
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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: