Company lists · Data refreshed October 2026

Top 18 Accounting firms for international nonprofits based in Portland, United States

RevenueBase identified 33 company matches for accounting firms for international nonprofits associated with Portland, United States as of October 2026 and tracks 1,005 professional contacts across them, including 595 with verified work emails. Across the United States, New York is the largest hub for this category (169 companies); Portland has 33.

This list covers company matches for accounting firms for international nonprofits associated with Portland, 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 October 1, 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 Oct 1, 2026 How this list was built
33Companies
1,005Contacts tracked
595Verified emails
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The 18 largest accounting firms for international nonprofits based in Portland, United States

Ranked by team size
Top 18 of 33 company matches for accounting firms for international nonprofits based in Portland, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPortland, ME, United StatesHQ recorded Oct 1, 2026201-500336 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchPortland, OR, United StatesHQ recorded Oct 1, 2026201-500197 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202651-200160 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchPortland, ME, United StatesHQ recorded Oct 1, 202651-20090 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-5025 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-5025 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-5025 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-5020 contacts →

Exact match

“Kern & Thompson, LLC is a full service public accounting firm located in downtown Portland.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-5013 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-5011 contacts →

Exact match

“Gary McGee & Co.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-509 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchPortland, IN, United StatesHQ recorded Oct 1, 20261-107 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchPortland, OR, United StatesHQ recorded Oct 1, 20261-103 contacts →

Exact match

“Go Green Tax is a Portland-based accounting firm specializing in tax preparation, start-up business consulting, bookkeeping, and payroll services.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-502 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchPortland, OR, United StatesHQ recorded Oct 1, 202611-502 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchPortland, OR, United StatesHQ recorded Oct 1, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchPortland, OR, United StatesHQ recorded Oct 1, 20261-101 contacts →

Exact match

“Trusted advisor to nonprofits and startups.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchPortland, OR, United StatesHQ recorded Oct 1, 20261-101 contacts →

Exact match

“Nonprofit Bookkeeping Guide, LLC offers bookkeeping services for nonprofit organizations and publishes free resources on bookkeeping, accounting, and financial management.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 18 of 33 accounting firms for international nonprofits based in Portland, United States

See the full list, filter by size, metro and specialty, and access 595 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Accounting firms for international nonprofits based in Portland, United States at a glance

As of Oct 1, 2026
59.2%Verified-email coverage
30.5Average contacts per company
1-10Median size (employees)
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
11
51-200
3
201-500
2

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 33 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 Portland, United States whose business descriptions match “accounting firms for international nonprofits” 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 595 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 October 1, 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.

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 “accounting firms for international nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many accounting firms for international nonprofits are there based in Portland, United States?

RevenueBase identified 33 company matches for accounting firms for international nonprofits associated with Portland, United States as of October 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?

Baker Newman Noyes 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 accounting firms for international nonprofits?

New York leads the United States with 169 company records, followed by Houston (75) and Miami (67). Portland has 33.

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 595 professional contacts with verified work emails tracked across these 33 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 October 1, 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.