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Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Portland, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 107 companies tracked

RevenueBase identified 107 professional services firms headquartered in Portland, United States as of September 2026 and tracks 3,031 professional contacts across them, including 1,870 with verified work emails. New York is the largest hub.

This list covers professional services 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, how directly it supports the match, and when it was last checked. 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
107Companies
3,031Contacts tracked
1,870Verified emails
Unlock all 107 companies Free signup · no credit card · 500 free credits

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

Ranked by team size
Top 25 of 107 professional services firms based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names professional services firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Berrydunn Assurance, TAX And ConsultingIndirect evidence
Portland, ME, United StatesHQ checked Sep 5, 2026501-1,000987

“BerryDunn is the brand name under which Berry, Dunn, McNeil & Parker, LLC and BDMP Assurance, LLP, independently owned entities, provide services.”

Source: company website · checked Sep 5, 2026
2
AldrichStrong evidence
Portland, OR, United StatesHQ checked Sep 5, 2026201-500410

“For more than 50 years, Aldrich has worked with businesses, their owners, and their employees to help them achieve their professional and personal financial goals.”

Source: company website · checked Sep 5, 2026
3
Baker Newman NoyesIndirect evidence
Portland, ME, United StatesHQ checked Sep 5, 2026201-500336

“Baker Newman Noyes is one of the nation's top 100 accounting and consulting firms with offices in Massachusetts, Maine, and New Hampshire.”

Source: company website · checked Sep 5, 2026
4
Kindercare Learing CenterIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 2026n/a257

“Kindercare Learing Center is an Accounting company located in 650 NE Holladay St # 1400, Portland, Oregon, United States.”

Source: company website · checked Sep 5, 2026
5
Perkins & COIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 2026201-500197

“Perkins & Co CPAs help growth-focused organizations and individuals navigate complex tax, audit, and advisory needs with clarity and confidence.”

Source: company website · checked Sep 5, 2026
6
Geffen MesherIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202651-200160

“We’re a Portland-based accounting firm with a 90+ year legacy, and we’re continuing to grow and evolve every day.”

Source: company website · checked Sep 5, 2026
7
Albin Randall & BennettIndirect evidence
Portland, ME, United StatesHQ checked Sep 5, 202651-20090

“ARB guides organizations in the automotive, construction, manufacturing, and nonprofit sectors; closely held businesses; and family groups to make intelligent, sensible financial…”

Source: company website · checked Sep 5, 2026
8
Purdy Powers & CompanyIndirect evidence
Portland, ME, United StatesHQ checked Sep 5, 202611-5046

“Confidence in Knowing.”

Source: company website · checked Sep 5, 2026
9
Irvine & Company, LLCIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5035

“Irvine & Company, LLC is a growing independent accounting firm located in Portland, OR.”

Source: company website · checked Sep 5, 2026
10
FluenceIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5032

“More Than Accounting At Fluence, we are not your everyday accounting firm.”

Source: company website · checked Sep 5, 2026
11
Isler Northwest LLCIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5025

“Isler Northwest LLC is a locally-owned firm of certified public accountants and business advisors.”

Source: company website · checked Sep 5, 2026
12
Alten Sakai & Company LLPIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5025

“Alten Sakai & Company LLP is one of the leading local accounting firms in the Portland, Oregon metro area.”

Source: company website · checked Sep 5, 2026
13
Pittman & Brooks, P.CIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5025

“We started Pittman & Brooks because we believe that businesses need more than accountants, they need business consultants who are CPA-certified.”

Source: company website · checked Sep 5, 2026
14
American Fiduciary Services LLCIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 20261-1017

“Headquartered in Portland, Oregon and founded in 2020, American Fiduciary Services provides fiduciary, forensic accounting, insolvency, litigation, and anti-fraud business support…”

Source: company website · checked Sep 5, 2026
15
Dougall Conradie LLCIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5017

“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: company website · checked Sep 5, 2026
16
Foster & Associates, Cpa, LLCIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202651-20015

“We are the “new kids on the block”.”

Source: company website · checked Sep 5, 2026
17
Fellner & KuhnIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5013

“Fellner & Kuhn has been serving clients since 1975.”

Source: company website · checked Sep 5, 2026
18
Tabor Accounting GroupIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5013
Source: company website · checked Sep 5, 2026
19
Iron Creek TAX & ConsultingIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 20261-1012

“Any goal.”

Source: company website · checked Sep 5, 2026
20
Dufour Accountants, An Archer Lewis FirmIndirect evidence
Portland, ME, United StatesHQ checked Sep 5, 20261-1012

“Dufour Tax Group specializes in providing comprehensive strategic tax planning and compliance services to individuals and businesses across the globe.”

Source: company website · checked Sep 5, 2026
21
TOP Kohlbush Hoem LLPIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5011

“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: company website · checked Sep 5, 2026
22
Gary Mcgee & Co. LLPIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5011

“Gary McGee & Co.”

Source: company website · checked Sep 5, 2026
23
Pacific Northwest TAX ServiceIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-5010

“We offer tax, accounting, payroll and tax audits services to individuals and small business owners.”

Source: company website · checked Sep 5, 2026
24
Collaborative Business Solutions, LLCIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 20261-1010

“Our firm provides services for businesses in all stages of development.”

Source: company website · checked Sep 5, 2026
25
Susan Matlack Jones And AssociatesIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 202611-509

“NON-PROFIT BOOKKEEPING SINCE 1986 Susan Matlack Jones & Associates provides quality accounting, bookkeeping, and consulting services to not-for-profit organizations.”

Source: company website · checked Sep 5, 2026

Showing 25 of 107 professional services firms based in Portland, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,870 reachable decision-makers.

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

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 593 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
72
11-50
26
51-200
4
201-500
4
501-1,000
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 107 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 professional services firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “professional services firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among professional services 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 an evidence 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, 1,870 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 5, 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.

Professional services firms by metro in the United States

Frequently asked

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

RevenueBase identified 107 professional services 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 professional services firms?

New York leads with 593 headquartered companies, followed by Houston (420) and Atlanta (304).

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 1,870 verified decision-maker contacts tracked across these 107 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 107 professional services firms based in Portland, United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · Professional services firms in United States · All United States lists · All Professional services firms lists · New lists

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.

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