Company lists · Data refreshed September 2026

Top 24 Accounting systems consulting firms based in Portland, United States

RevenueBase identified 43 accounting systems consulting firms headquartered in Portland, United States as of September 2026 and tracks 1,111 professional contacts across them, including 510 with verified work emails. New York is the largest hub.

This list covers accounting systems consulting 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
43Companies
1,111Contacts tracked
510Verified emails
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The 24 largest accounting systems consulting firms based in Portland, United States

Ranked by team size
Top 24 of 43 accounting systems consulting 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 accounting systems consulting 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidencePortland, ME, United StatesHQ checked Sep 21, 2026201-500336 contacts →

Strong 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
2Partial evidencePortland, OR, United StatesHQ checked Sep 21, 2026n/a257 contacts →

Partial 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
3Partial evidencePortland, OR, United StatesHQ checked Sep 21, 202651-200160 contacts →

Partial 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
4Indirect evidencePortland, ME, United StatesHQ checked Sep 21, 202651-20090 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
5Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 202611-5035 contacts →

Indirect evidence

“With the June 2018 merger, ISM is now part of SWK Technologies, Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 202611-5025 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
7Partial evidencePortland, OR, United StatesHQ checked Sep 21, 202611-5025 contacts →

Partial 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
8Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 202611-5025 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
9Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 202611-5013 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
10Strong evidencePortland, OR, United StatesHQ checked Sep 21, 202611-5012 contacts →

Strong evidence

Accounting Services for Construction Businesses We design, build, and operate Quickbooks®-based precision accounting systems exclusively for construction businesses.”

Source: RevenueBase Database · checked Sep 21, 2026
11Strong evidencePortland, OR, United StatesHQ checked Sep 21, 202611-509 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
12Strong evidencePortland, OR, United StatesHQ checked Sep 21, 20261-107 contacts →

Strong evidence

“At Opal Creek Consulting, we help finance leaders turn IT systems into growth engines.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidencePortland, IN, United StatesHQ checked Sep 21, 20261-107 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 202611-506 contacts →

Indirect evidence

“We're not just advisors - we're integral partners in our clients' businesses.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 20261-103 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
16Strong evidencePortland, OR, United StatesHQ checked Sep 21, 20261-103 contacts →

Strong 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
17Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 202611-502 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 20261-102 contacts →

Indirect evidence

“Your company.”

Source: RevenueBase Database · checked Sep 21, 2026
19Strong evidencePortland, United StatesHQ checked Sep 21, 20261-102 contacts →

Strong evidence

“We offer full cycle accounting services including but not limited to monthly / quarterly bookkeeping, Controller level oversight, management and consulting, advanced balance sheet…”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 202611-502 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 20261-102 contacts →

Indirect evidence

“Business Decision Confidence.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

“Our firm is large enough to offer a full range of professional services, but small enough to give you the individual attention that you deserve.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidencePortland, OR, United StatesHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

“Trusted advisor to nonprofits and startups.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 24 of 43 accounting systems consulting firms based in Portland, United States

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Accounting systems consulting firms based in Portland, United States at a glance

As of Sep 21, 2026
45.9%Verified-email coverage
25.8Average contacts per company
1-10Median size (employees)
467.4%Largest-city concentration · New York
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
25
11-50
14
51-200
3
201-500
1

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 43 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 accounting systems consulting 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 “accounting systems consulting 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 accounting systems consulting 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 accounting systems consulting 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, 510 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.

Accounting systems consulting 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 accounting systems consulting 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 accounting systems consulting firms are there based in Portland, United States?

RevenueBase identified 43 accounting systems consulting 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?

Baker Newman Noyes, headquartered in Portland, tops this list with the largest team on record.

Which city has the most accounting systems consulting firms?

New York leads with 201 headquartered companies, followed by Houston (150) and Atlanta (118).

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 510 verified decision-maker contacts tracked across these 43 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.