Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Seattle, United States

Name: Professional services firms based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 105 companies tracked

RevenueBase identified 105 company matches for professional services firms associated with Seattle, United States as of September 2026 and tracks 2,963 professional contacts across them, including 1,278 with verified work emails. Across the United States, New York is the largest hub for this category (620 companies); Seattle has 105.

This list covers company matches for professional services firms associated with Seattle, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 5, 2026 How this list was built

105Companies

2,963Contacts tracked

1,278Verified emails

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The 25 largest professional services firms based in Seattle, United States

Ranked by team size

Top 25 of 105 company matches for professional services firms based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Moss Adams	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	10001+	2,425 contacts →
	Exact match “Moss Adams is now Baker Tilly, a leading advisory, tax, and assurance firm serving the middle market.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
2	HKP Advisors	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	43 contacts →
	Exact match “Hagen Kurth Perman, CPAs has been serving the Puget Sound region for more than 40 years.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
3	Greenwood Ohlund PS	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	38 contacts →
	Exact match “Greenwood Ohlund, PS founded in 1971, is a well-respected partner in the Seattle community.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
4	AMP Services, LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	51-200	29 contacts →
	Exact match “AMP Services, LLC is an Accounting, Management consulting, and Professional services firm for multi-unit restaurant and retail companies.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
5	Zachary Scott	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	19 contacts →
	Exact match “Zachary Scott was founded in 1991 with a simple goal – be a trustworthy partner and advisor for privately-held business owners and managers to help them build their businesses…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
6	R.D. Barnett Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	15 contacts →
	Exact match “R.D.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
7	The Apex LAW Group Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	15 contacts →
	Exact match “The Apex Law Group is a business and corporate law firm that represents businesses across the spectrum from for-profit to non-profit to hybrid entities like social purpose…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
8	Ranta CPA Associates	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	15 contacts →
	Exact match “Seattle-based CPA firm, with an emphasis on income tax preparation and business services.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9	Finney Neill & Company, P.S	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	14 contacts →
	Exact match “Finney, Neill & Company, P.S.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10	NTH Degree Cpas	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	13 contacts →
	Exact match “We understand that all businesses start with people and ideas.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11	Camber Consulting LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	13 contacts →
	Exact match “Camber Consulting LLC was founded in 2011 with the goal of providing specialized finance, accounting, and IT project management services to clients in the Pacific Northwest and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
12	Hawthorne & Co. Cpas	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	12 contacts →
	Exact match “Hawthorne & Co.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13	Hunt Jackson, Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	11 contacts →
	Exact match “The principals and employees of Hunt Jackson, PLLC are committed to operating a full-service accounting firm that blends the in-depth competence of seasoned professionals with the…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14	King & Oliason Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	10 contacts →
	Exact match “King & Oliason is a Seattle tax accounting firm specializing in tax consulting and tax return preparation for high net worth individuals, their families, non-profit organizations…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
15	North Star Marketing Group, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	10 contacts →
	Exact match “We Believe That Long-Term Customer Satisfaction Is The Cornerstone Of Our Success.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16	Francis & Company Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	9 contacts →
	Exact match “Francis & Company PLLC is quality-oriented, client-centered professional services firm providing audit, financial management, consulting, and accounting expertise in the greater…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17	Pretty Books	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	9 contacts →
	Exact match “Pretty Books offers accounting, bookkeeping, payroll, and tax services to small business clients around the country.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
18	Safstrom Cpas & Advisors, Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	8 contacts →
	Exact match “Tax Planning & Preparation - Keep more of your hard-earned money with sound, strategic tax planning and preparation support.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
19	Watson Mcdonell	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	8 contacts →
	Exact match “We are a full-service CPA firm licensed in Washington.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
20	Minar Northey, LLP	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	11-50	7 contacts →
	Exact match “Minar Northey, CPA’s is a company based out of 100 W HARRISON ST, Seattle, Washington, United States.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
21	Allen KOE Pllc	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	7 contacts →
	Exact match “Business Taxation and Assurance Services” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
22	Tremper & Co., LLP	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	5 contacts →
	Exact match “Tremper and Company, LLP has been serving businesses and individual in the Pacific Northwest since its founding in 1946.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
23	Banyan Legal Counsel	Exact match	Seattle, WA, United StatesHQ recorded Sep 5, 2026	1-10	5 contacts →
	Exact match “At Banyan Legal Counsel, our philosophy begins with our name.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
24	The Myers Associates, P.C	Exact match	Seattle, United StatesHQ recorded Sep 5, 2026	1-10	4 contacts →
	Exact match “At The Myers Associates we believe in the value of relationships.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
25	Gattis, Stewart & Associates, P.S	Exact match	Seattle, United StatesHQ recorded Sep 5, 2026	1-10	3 contacts →
	Exact match “For over 30 years, our firm has been providing quality, personalized financial guidance to local individuals and businesses.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “professional services firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 105 professional services firms based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 1,278 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Professional services firms based in Seattle, United States at a glance

As of Sep 5, 2026

43.1%Verified-email coverage

28.2Average contacts per company

1-10Median size (employees)

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

10001+

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 105 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Seattle, United States whose business descriptions match “professional services firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,278 professional contacts with verified work emails across the full matched dataset. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Professional services firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “professional services firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional services firms are there based in Seattle, United States?

RevenueBase identified 105 company matches for professional services firms associated with Seattle, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Moss Adams tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most professional services firms?

New York leads the United States with 620 company records, followed by Houston (420) and Atlanta (304). Seattle has 105.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,278 professional contacts with verified work emails tracked across these 105 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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 SmartSearch, 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.