Company lists · Data refreshed September 2026

Top 17 Business tax consultants based in Seattle, United States

RevenueBase identified 43 business tax consultants headquartered in Seattle, United States as of September 2026 and tracks 95 professional contacts across them, including 31 with verified work emails. New York is the largest hub.

This list covers business tax consultants headquartered in Seattle, 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 19, 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 19, 2026 86% judged on-target in blind review
43Companies
95Contacts tracked
31Verified emails
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The 17 largest business tax consultants based in Seattle, United States

Ranked by team size
Top 17 of 43 business tax consultants based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to business tax consultants: 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
1Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 202611-5010 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-108 contacts →

Partial evidence

Tax Planning & Preparation - Keep more of your hard-earned money with sound, strategic tax planning and preparation support.”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-106 contacts →

Partial evidence

“Taxman Associates are experts in solving complex tax problems and navigating difficult IRS issues.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-104 contacts →

Partial evidence

“You didn't build real revenue or land income that puts you in a different tax bracket just to hand a third of it over without seeking a better strategy.”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-103 contacts →

Partial evidence

“Weissgarber CPA is a renowned virtual accounting firm specializing in tax services for individuals and small businesses.”

Source: RevenueBase Database · checked Sep 19, 2026
6Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 202611-503 contacts →

Partial evidence

“Welcome to Olympic Point Tax and Consulting (f/k/a Williams+Callan).”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceSeattle, United StatesHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“For over 30 years, our firm has been providing quality, personalized financial guidance to local individuals and businesses.”

Source: RevenueBase Database · checked Sep 19, 2026
8Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-103 contacts →

Partial evidence

“Aldaris CPA Group is a new breed of collaborative tax and accounting firms.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-103 contacts →

Indirect evidence

“Serenity Financial Group is an accounting and taxation service located in beautiful Tampa Bay.”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-102 contacts →

Partial evidence

Taxes & Accounting made simple.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-102 contacts →

Indirect evidence

“We specialize in assisting Technology Professionals who have stock compensation plans, as well as individuals who are self-employed sole proprietors or have single member LLCs.”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-101 contacts →

Partial evidence

“We don't believe in just "tax prep." Every client at Clarity undergoes an annual journey that highlights peace of mind and strategy surrounding your taxes and finances.”

Source: RevenueBase Database · checked Sep 19, 2026
13Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-101 contacts →

Partial evidence

“We partner with individuals and businesses locally, and all over the country, to create customize service packages for accounting, tax planning, prep and optimization, and CFO and…”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceSeattle, United StatesHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

“Public Accounting Firm”

Source: RevenueBase Database · checked Sep 19, 2026
15Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-101 contacts →

Partial evidence

“Helping Small Business Owners Legally Save Money On Future Taxes By Creating Tax Plans With Strategies Personalized To Their Long-Term Goals, Business, & Life.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
17Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 20261-101 contacts →

Partial evidence

“At Bowen Northwest, P.S, you work with advisors who understand the complex range of tax matters impacting your business operations and your personal goals.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 17 of 43 business tax consultants based in Seattle, United States

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Business tax consultants based in Seattle, United States at a glance

As of Sep 19, 2026
32.6%Verified-email coverage
2.2Average contacts per company
1-10Median size (employees)
472.1%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
40
11-50
3

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 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 business tax consultants, 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 Seattle, United States whose own description of what they do matches “business tax consultants”. 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 business tax consultants), 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 business tax consultants, and records with no verified work email. Companies headquartered outside Seattle 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, 31 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 19, 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.

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 business tax consultants, 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 business tax consultants are there based in Seattle, United States?

RevenueBase identified 43 business tax consultants headquartered in Seattle, 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?

King & Oliason Pllc, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most business tax consultants?

New York leads with 203 headquartered companies, followed by Houston (201) and Miami (102).

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 31 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 19, 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.