Company lists · Data refreshed September 2026

Top 25 Big audit firms based in Portland, United States

Name: Big audit firms based in Portland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 51 companies tracked

RevenueBase identified 51 big audit firms headquartered in Portland, United States as of September 2026 and tracks 2,412 professional contacts across them, including 1,477 with verified work emails. New York is the largest hub.

This list covers big audit firms headquartered in Portland, 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 21, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

51Companies

2,412Contacts tracked

1,477Verified emails

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The 25 largest big audit firms based in Portland, United States

Ranked by team size

Top 25 of 51 big audit firms based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to big audit firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Berrydunn Assurance, TAX And Consulting	Indirect evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	501-1,000	987 contacts →
	Indirect evidence “BerryDunn is the brand name under which Berry, Dunn, McNeil & Parker, LLC and BDMP Assurance, LLP, independently owned entities, provide services.” Source: RevenueBase Database · checked Sep 21, 2026
2	Baker Newman Noyes	Indirect evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	201-500	336 contacts →
	Indirect evidence “Baker Newman Noyes is one of the nation's top 100 accounting and consulting firms with offices in Massachusetts, Maine, and New Hampshire.” Source: RevenueBase Database · checked Sep 21, 2026
3	Kindercare Learing Center	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	n/a	257 contacts →
	Indirect evidence “Kindercare Learing Center is an Accounting company located in 650 NE Holladay St # 1400, Portland, Oregon, United States.” Source: RevenueBase Database · checked Sep 21, 2026
4	Perkins & CO	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	201-500	197 contacts →
	Partial evidence “Perkins & Co CPAs help growth-focused organizations and individuals navigate complex tax, audit, and advisory needs with clarity and confidence.” Source: RevenueBase Database · checked Sep 21, 2026
5	Geffen Mesher	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	51-200	160 contacts →
	Indirect evidence “We’re a Portland-based accounting firm with a 90+ year legacy, and we’re continuing to grow and evolve every day.” Source: RevenueBase Database · checked Sep 21, 2026
6	Albin Randall & Bennett	Indirect evidence	Portland, ME, United StatesHQ checked Sep 21, 2026	51-200	90 contacts →
	Indirect evidence “ARB guides organizations in the automotive, construction, manufacturing, and nonprofit sectors; closely held businesses; and family groups to make intelligent, sensible financial…” Source: RevenueBase Database · checked Sep 21, 2026
7	Talbot, Korvola & Warwick, LLP	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	40 contacts →
	Partial evidence “TKW has served clients in the Pacific Northwest with audit and accounting, tax, business advisory and other services since 1987.” Source: RevenueBase Database · checked Sep 21, 2026
8	Irvine & Company, LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	35 contacts →
	Indirect evidence “Irvine & Company, LLC is a growing independent accounting firm located in Portland, OR.” Source: RevenueBase Database · checked Sep 21, 2026
9	Isler Northwest LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	25 contacts →
	Indirect evidence “Isler Northwest LLC is a locally-owned firm of certified public accountants and business advisors.” Source: RevenueBase Database · checked Sep 21, 2026
10	Alten Sakai & Company LLP	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	25 contacts →
	Indirect evidence “Alten Sakai & Company LLP is one of the leading local accounting firms in the Portland, Oregon metro area.” Source: RevenueBase Database · checked Sep 21, 2026
11	Pittman & Brooks, P.C	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	25 contacts →
	Indirect evidence “We started Pittman & Brooks because we believe that businesses need more than accountants, they need business consultants who are CPA-certified.” Source: RevenueBase Database · checked Sep 21, 2026
12	Kern & Thompson, LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Kern & Thompson, LLC is a full service public accounting firm located in downtown Portland.” Source: RevenueBase Database · checked Sep 21, 2026
13	Dougall Conradie LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Portland Certified Public Accountants Dougall Conradie LLC - Our practice is built on the success of more than 30 years of certified public accounting and tax experience of John…” Source: RevenueBase Database · checked Sep 21, 2026
14	Foster & Associates, Cpa, LLC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	51-200	15 contacts →
	Indirect evidence “We are the “new kids on the block”.” Source: RevenueBase Database · checked Sep 21, 2026
15	Fellner & Kuhn	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Fellner & Kuhn has been serving clients since 1975.” Source: RevenueBase Database · checked Sep 21, 2026
16	TOP Kohlbush Hoem LLP	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Located in the beautiful City of Roses, Portland, OR, Top Kohlbush & Hoem has been successfully serving the tax and accounting needs of clients for over 35 years.” Source: RevenueBase Database · checked Sep 21, 2026
17	Gary Mcgee & Co. LLP	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Gary McGee & Co.” Source: RevenueBase Database · checked Sep 21, 2026
18	Pacific Northwest TAX Service	Partial evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Partial evidence “We offer tax, accounting, payroll and tax audits services to individuals and small business owners.” Source: RevenueBase Database · checked Sep 21, 2026
19	Perpetual CPA	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Perpetual CPA is a digital Public Accounting firm.” Source: RevenueBase Database · checked Sep 21, 2026
20	Peters & Company, P.C	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “Experience with service professionals, retail, restaurant, construction, manufacturing, wine industry and wholesale businesses who employ one to more than 100 employees and…” Source: RevenueBase Database · checked Sep 21, 2026
21	Truepoint Analytics, PC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “Truepoint Analytics is a highly respected and experienced financial litigation support firm whose clients reside in multiple states with cases in numerous jurisdictions.” Source: RevenueBase Database · checked Sep 21, 2026
22	Cobalt, P.C	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “We're not just advisors - we're integral partners in our clients' businesses.” Source: RevenueBase Database · checked Sep 21, 2026
23	Neumann Curtis Cpas	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “A passion for business and entrepreneurialism has led the founding partner, Robert Curtis CPA, to pursue a career in public accounting.” Source: RevenueBase Database · checked Sep 21, 2026
24	Wilken & Company, P.C., Cpas	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “We are a full service CPA firm serving clients in the Pacific Northwest and throughout the United States.” Source: RevenueBase Database · checked Sep 21, 2026
25	GO Green TAX	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “Go Green Tax is a Portland-based accounting firm specializing in tax preparation, start-up business consulting, bookkeeping, and payroll services.” Source: RevenueBase Database · checked Sep 21, 2026

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: big audit 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 big audit firms.
Partial evidence: Its own public description names part of big audit firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big audit 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 25 of 51 big audit firms based in Portland, United States

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Big audit firms based in Portland, United States at a glance

As of Sep 21, 2026

61.2%Verified-email coverage

47.3Average contacts per company

11-50Median size (employees)

447.1%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Portland, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 51 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 big audit 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 Portland, United States whose own description of what they do matches “big audit 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 big audit 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 big audit firms, and records with no verified work email. Companies headquartered outside Portland 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, 1,477 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 21, 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.

Big audit firms by metro in the United States

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 big audit 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 big audit firms are there based in Portland, United States?

RevenueBase identified 51 big audit firms headquartered in Portland, 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?

Berrydunn Assurance, TAX And Consulting, headquartered in Portland, tops this list with the largest team on record.

Which city has the most big audit firms?

New York leads with 228 headquartered companies, followed by Houston (152) and Chicago (100).

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 1,477 verified decision-maker contacts tracked across these 51 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 21, 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.