Company lists · Data refreshed September 2026
Top 11 Corporate tax firms based in Washington, United States
RevenueBase identified 32 corporate tax firms headquartered in Washington, United States as of September 2026 and tracks 317 professional contacts across them, including 114 with verified work emails. New York is the largest hub.
This list covers corporate tax firms headquartered in Washington, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 11 largest corporate tax firms based in Washington, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 54 contacts → | ||||
Partial evidence “Think, LLP is a national professional tax services firm that consists of former Big-4 partners from the national tax practices, attorneys, CPAs, engineers, former IRS technicians…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 50 contacts → | ||||
Partial evidence “Ivins, Phillips & Barker is exclusively engaged in the practice of federal tax, benefits and compensation, and estate and gift tax law.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 17 contacts → | ||||
Partial evidence “RoseMcKenna PLLC is a boutique accounting firm dedicated to providing the absolute best in personalized and professional tax services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 16 contacts → | ||||
Indirect evidence “CWP Consulting was built around the desire to provide quality, professional services to individuals and business owners through the use of specialized and individualized services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 10 contacts → | ||||
Partial evidence “Rosefelt Tax Law is a Washington, DC Metro-based firm with a national practice representing clients with serious tax problems and financial concerns.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 6 contacts → | ||||
Partial evidence “In 2001 Capitol Tax Partners’ founders relied on decades of government experience to create Washington’s premier tax firm that could provide clients with both political and tax…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 5 contacts → | ||||
Partial evidence “Pontius Tax Law, PLLC represents individual and business clients with sensitive and serious tax matters before the Internal Revenue Service and state taxing authorities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3 contacts → | ||||
Partial evidence “Safeguard Law, PLLC provides tax and business help to everyday people.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2 contacts → | ||||
Strong evidence “Boutique law firm specializing in developing strategic tax planning initiatives for businesses and investors, including international corporate treasury centers, intellectual…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1 contacts → | ||||
Partial evidence “Sallie Mullins Thompson, CPA, Financial Planner, and Tax Strategist, provides financial services to closely held businesses, families, and individuals in the following areas- Tax…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1 contacts → | ||||
Partial evidence “Lesher Tax Services all-in-one CPA firm offering expert bookkeeping, tax preparation, strategy consulting, and compliance services to business owners, individuals, and non-profits.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: corporate tax firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names corporate tax firms.
- Partial evidence
- Its own public description names part of corporate tax firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name corporate tax firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 11 of 32 corporate tax firms based in Washington, United States
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Corporate tax firms based in Washington, United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 32 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among corporate tax firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Washington, United States whose own description of what they do matches “corporate tax firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names corporate tax firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among corporate tax firms, and records with no verified work email. Companies headquartered outside Washington are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 114 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Corporate tax firms by metro in the United States
- Corporate tax firms in New York242
- Corporate tax firms in Houston188
- Corporate tax firms in Miami115
- Corporate tax firms in Atlanta98
- Corporate tax firms in Los Angeles97
- Corporate tax firms in Chicago95
- Corporate tax firms in San Diego93
- Corporate tax firms in Dallas92
- Corporate tax firms in Austin76
- Corporate tax firms in San Francisco72
- Corporate tax firms in Orlando66
- Corporate tax firms in Charlotte58
- Corporate tax firms in Las Vegas54
- Corporate tax firms in Irvine53
- Corporate tax firms in Tampa52
- Corporate tax firms in Seattle46
- Corporate tax firms in Denver45
- Corporate tax firms in San Jose45
- Corporate tax firms in San Antonio40
- Corporate tax firms in Portland39
- Corporate tax firms in Phoenix38
- Corporate tax firms in Boca Raton37
- Corporate tax firms in Cincinnati33
- Corporate tax firms in Glendale33
- Corporate tax firms in Plano33
- Corporate tax firms in Scottsdale32
- Corporate tax firms in Washington32
- Corporate tax firms in Columbus30
- Corporate tax firms in Fort Worth30
- Corporate tax firms in Boston29
- Corporate tax firms in Jacksonville29
- Corporate tax firms in Sacramento29
- Corporate tax firms in Salt Lake City29
- Corporate tax firms in Indianapolis28
- Corporate tax firms in Philadelphia28
- Corporate tax firms in Raleigh28
- Corporate tax firms in Wilmington28
- Corporate tax firms in Fayetteville27
- Corporate tax firms in Fort Lauderdale25
- Corporate tax firms in Knoxville25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names corporate tax firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many corporate tax firms are there based in Washington, United States?
RevenueBase identified 32 corporate tax firms headquartered in Washington, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Think LLP, headquartered in Washington, tops this list with the largest team on record.
Which city has the most corporate tax firms?
New York leads with 242 headquartered companies, followed by Houston (188) and Miami (115).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 114 verified decision-maker contacts tracked across these 32 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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