Insights

Established Local Expertise Thompson Greenspon has a long-standing presence in the Washington, DC metro area for over 65 years, indicating deep local market knowledge and established client networks ideal for cross-sell of advisory, construction, government contracting, nonprofits, and employee benefits services.

Mid-market Growth With 51-200 employees and revenue in the 50-100 million range, the firm sits in the mid-market segment, offering opportunities to upsell scalable tax, assurance, and advisory solutions to growing mid-sized companies looking for expanded service lines.

Awarded Service Multiple Best of Accounting and Top Workplace recognitions signal a reputation for client service and employee engagement, which can be leveraged to win new clients seeking dependable, high-touch accounting and advisory firms.

Industry Specialties Core practice areas include construction, government contracting, nonprofits, professional services, and employee benefits, presenting targeted cross-sell opportunities to clients within these sectors and adjacent businesses needing related financial expertise.

Technology Readiness Utilizes a modern tech stack and web technologies (MySQL, HTTP/3, content optimizations) that can support digital transformation services, data analytics, and cloud-based financial systems implementations for clients pursuing efficiency gains.

Thompson Greenspon Tech Stack

Thompson Greenspon uses 8 technology products and services including MySQL, Google Fonts API, Google Cloud, and more. Explore Thompson Greenspon's tech stack below.

  • MySQL
    Database
  • Google Fonts API
    Font Scripts
  • Google Cloud
    Infrastructure As A Service
  • HubSpot
    Marketing Automation
  • Kinsta
    Platform As A Service
  • MediaElement.js
    Video Players
  • HTTP/3
    Web & Portal Technology
  • Google Analytics
    Web Analytics

Thompson Greenspon's Email Address Formats

Thompson Greenspon uses at least 1 format(s):
Thompson Greenspon Email FormatsExamplePercentage
Last@tgccpa.comDoe@tgccpa.com
76%
FLast@tgccpa.comJDoe@tgccpa.com
15%
FL@tgccpa.comJD@tgccpa.com
5%
LastF@tgccpa.comDoeJ@tgccpa.com
4%

Frequently Asked Questions

What is Thompson Greenspon's phone number?

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You can contact Thompson Greenspon's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Thompson Greenspon's official website and social media links?

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Thompson Greenspon's official website is tgccpa.com and has social profiles on LinkedIn.

How much revenue does Thompson Greenspon generate?

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As of July 2026, Thompson Greenspon's annual revenue is estimated to be $50M - $100M.

What is Thompson Greenspon's SIC code NAICS code?

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Thompson Greenspon's SIC code is 7389 - Business Services, Not Elsewhere Classified NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Thompson Greenspon have currently?

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As of July 2026, Thompson Greenspon has approximately 61 employees across 1 continents, including North America. Key team members include Interim President: Q. M.Manager, Accounting And Audit: J. G.Audit Manager: I. P.. Explore Thompson Greenspon's employee directory with LeadIQ.

What industry does Thompson Greenspon belong to?

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Thompson Greenspon operates in the Accounting industry.

What technology does Thompson Greenspon use?

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Thompson Greenspon's tech stack includes MySQLGoogle Fonts APIGoogle CloudHubSpotKinstaMediaElement.jsHTTP/3Google Analytics.

What is Thompson Greenspon's email format?

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Thompson Greenspon's email format typically follows the pattern of Last@tgccpa.com. Find more Thompson Greenspon email formats with LeadIQ.

When was Thompson Greenspon founded?

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Thompson Greenspon was founded in 1956.
Thompson Greenspon logo

Thompson Greenspon

AccountingVirginia, United States51-200 Employees

Thompson Greenspon is a certified public accounting practice delivering financial reporting, tax planning and advisory services. It serves clients across sectors including construction, government contracting, nonprofits, professional services, and employee benefits. Headquartered in Fairfax, Virginia, the firm has supported the Washington, D.C. metropolitan area for more than six decades.
As a mid-sized regional firm, it focuses on delivering tailored solutions to organizations in its specialized industries, blending compliance with strategic guidance. The firm has been recognized for service excellence, receiving the 2023 Best of Accounting Award as well as the 2022 edition.

Section iconCompany Overview

Phone number
Website
tgccpa.com
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1956
Employees
51-200

Section iconFunding & Financials

  • $50M - $100M

    Thompson Greenspon's revenue is estimated to be in the range of $50M - $100M

Section iconFunding & Financials

  • $50M - $100M

    Thompson Greenspon's revenue is estimated to be in the range of $50M - $100M

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