Insights

Tax expertise Target EllisPenn & O'Connor as a prime client for tax resolution and state tax compliance services, highlighting their niche as a national tax specialist with a dedicated state tax department.

Mid-market potential Position for scalable tax advisory and controversy support suitable for a firm with 11-50 employees and revenue in the 10–25 million range, offering outsourced tax strategy, notices defense, and multi-state remediation.

Professional network Leverage their affiliations (NATP, Pennsylvania Bar Association, NAEA) to introduce partnerships or preferred vendor programs, presenting value through compliance training, credentialed support, and co-branded seminars.

Technology leverage Offer modernization of tax operations using workflow automation, client portal security enhancements, and data integration with Google Workspace to improve efficiency and client service delivery.

Growth enablement Propose scalable services to support potential expansion or acquisitions, including due diligence assistance, tax risk assessments, and cross-border or multi-state tax strategies aligned with their national focus.

Ellis Penn & O'Connor Tech Stack

Ellis Penn & O'Connor uses 8 technology products and services including WordPress, Open Graph, Google Workspace, and more. Explore Ellis Penn & O'Connor's tech stack below.

  • WordPress
    Content Management System
  • Open Graph
    Content Management System
  • Google Workspace
    Email
  • jQuery Migrate
    Javascript Libraries
  • PHP
    Programming Languages
  • Jetpack
    Web Platform Extensions
  • Apache
    Web Servers
  • Apache HTTP Server
    Web Servers

Ellis Penn & O'Connor's Email Address Formats

Ellis Penn & O'Connor uses at least 1 format(s):
Ellis Penn & O'Connor Email FormatsExamplePercentage
First@ellispenn.comJohn@ellispenn.com
82%
Last@ellispenn.comDoe@ellispenn.com
18%

Frequently Asked Questions

What is Ellis Penn & O'Connor's official website and social media links?

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Ellis Penn & O'Connor's official website is ellispenn.com and has social profiles on LinkedIn.

How much revenue does Ellis Penn & O'Connor generate?

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As of July 2026, Ellis Penn & O'Connor's annual revenue is estimated to be $10M - $25M.

What is Ellis Penn & O'Connor's SIC code NAICS code?

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Ellis Penn & O'Connor's SIC code is 8111 - Legal Services NAICS code is 5411 - Legal Services.

How many employees does Ellis Penn & O'Connor have currently?

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As of July 2026, Ellis Penn & O'Connor has approximately 11 employees across 1 continents, including North America. Key team members include Associate: D. T.Consultant: S. P.. Explore Ellis Penn & O'Connor's employee directory with LeadIQ.

What industry does Ellis Penn & O'Connor belong to?

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Ellis Penn & O'Connor operates in the Legal Services industry.

What technology does Ellis Penn & O'Connor use?

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Ellis Penn & O'Connor's tech stack includes WordPressOpen GraphGoogle WorkspacejQuery MigratePHPJetpackApacheApache HTTP Server.

What is Ellis Penn & O'Connor's email format?

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Ellis Penn & O'Connor's email format typically follows the pattern of First@ellispenn.com. Find more Ellis Penn & O'Connor email formats with LeadIQ.
Ellis Penn & O'Connor logo

Ellis Penn & O'Connor

Legal ServicesPennsylvania, United States11-50 Employees

Ellis Penn & O'Connor, Inc. operates in the legal services sector with a focus on IRS and state tax matters. The firm is based in Philadelphia, Pennsylvania.

It describes itself as a national tax resolution practice with a dedicated state tax department staffed by trained professionals. The organization maintains professional memberships with the National Association of Tax Professionals, the Pennsylvania Bar Association, and the National Association of Enrolled Agents. The firm operates as a small to mid-sized practice.

Section iconCompany Overview

SIC Code
8111 - Legal Services
NAICS Code
5411 - Legal Services
Employees
11-50

Section iconFunding & Financials

  • $10M - $25M

    Ellis Penn & O'Connor's revenue is estimated to be in the range of $10M - $25M

Section iconFunding & Financials

  • $10M - $25M

    Ellis Penn & O'Connor's revenue is estimated to be in the range of $10M - $25M

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