Company lists · Data refreshed September 2026

Top 22 Outsourcing accounting and bookkeeping firms based in Seattle, United States

RevenueBase identified 52 company matches for outsourcing accounting and bookkeeping firms associated with Seattle, United States as of September 2026 and tracks 172 professional contacts across them, including 75 with verified work emails. Across the United States, New York is the largest hub for this category (253 companies); Seattle has 52.

This list covers company matches for outsourcing accounting and bookkeeping firms associated with Seattle, 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 September 21, 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 Sep 21, 2026 How this list was built
52Companies
172Contacts tracked
75Verified emails
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The 22 largest outsourcing accounting and bookkeeping firms based in Seattle, United States

Ranked by team size
Top 22 of 52 company matches for outsourcing accounting and bookkeeping firms based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchSeattle, WA, United StatesHQ recorded Sep 21, 202651-20031 contacts →

Exact match

“System Six is a modern, remote, cloud-based finance & accounting firm focused on two equal missions:(1) providing dream accounting careers to our team members, and (2) freeing up…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-109 contacts →

Exact match

“Pretty Books offers accounting, bookkeeping, payroll, and tax services to small business clients around the country.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-108 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-107 contacts →

Exact match

“Rising Sun Accounting provides accounting & bookkeeping services to Seattle nonprofits.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-107 contacts →

Exact match

“Business Taxation and Assurance Services”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 202611-506 contacts →

Exact match

“BRING YOUR FINANCIAL MANAGEMENT TO THE NEXT LEVEL Franklin Pierce Northwest (FPNW) offers a comprehensive range of financial, nonprofit and advising services to fit a wide range…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Whether you're launching a startup, scaling a growing business, or leading an established enterprise, we're here to elevate your financial management.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Mezzanine Business Services helps small and growing businesses stay organized, compliant, and confident with reliable bookkeeping, payroll support, and practical consulting.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-105 contacts →

Exact match

“We are available to help with the following services- Accounting and Financial Reporting - Budgeting - Bookkeeping - Audit Preparation and Internal Audit Services - Interim CFO…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-104 contacts →

Exact match

“STOP GUESSING YOUR CASH FLOW.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 202611-503 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchSeattle, United StatesHQ recorded Sep 21, 20261-103 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-103 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-102 contacts →

Exact match

“Taxes & Accounting made simple.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-102 contacts →

Exact match

“Accman Inc is an accounting company based out of 215 NE 40th St.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-102 contacts →

Exact match

“Centerbridge Accounting & Tax, LLC allows business owners and investors to focus on building and running their businesses by providing them actionable information and coaching and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-102 contacts →

Exact match

“Bookkeeping services for small businesses”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-101 contacts →

Exact match

“Streamline all aspects of your business accounting.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchSeattle, United StatesHQ recorded Sep 21, 20261-101 contacts →

Exact match

“We provide tax and bookkeeping services for small business owners who want a CPA that they can rely on.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-101 contacts →

Exact match

“If you’re serious about your company’s financial health, you’ve come to the right place.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 20261-101 contacts →

Exact match

“My Seattle Bookkeeper provides personalized bookkeeping for small businesses.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchSeattle, United StatesHQ recorded Sep 21, 20261-101 contacts →

Exact match

“We are a full service bookkeeping service - whether you need 2 hours per month or weekly bookkeeping help.Give Stephanie a call at 206-551-6288."Bookkeeping solutions for…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 22 of 52 outsourcing accounting and bookkeeping firms based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 75 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outsourcing accounting and bookkeeping firms based in Seattle, United States at a glance

As of Sep 21, 2026
43.6%Verified-email coverage
3.3Average contacts per company
1-10Median size (employees)
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
45
11-50
6
51-200
1

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 52 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 Seattle, United States whose business descriptions match “outsourcing accounting and bookkeeping firms” 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 75 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 September 21, 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.

Outsourcing accounting and bookkeeping firms by metro in the United States

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 “outsourcing accounting and bookkeeping firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourcing accounting and bookkeeping firms are there based in Seattle, United States?

RevenueBase identified 52 company matches for outsourcing accounting and bookkeeping firms associated with Seattle, United States as of September 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?

System SIX 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 outsourcing accounting and bookkeeping firms?

New York leads the United States with 253 company records, followed by Houston (201) and Los Angeles (158). Seattle has 52.

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 75 professional contacts with verified work emails tracked across these 52 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 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 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.