Company lists · Data refreshed August 2026

Top 25 Accounting outsourcing companies based in the United States

There are 6,876 accounting outsourcing companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 32,524 professional contacts across them, including 9,212 with verified work emails and 9,537 with mobile numbers. New York is the largest hub.

This list covers accounting outsourcing companies headquartered in the 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 August 30, 2026.

6,876Companies
32,524Contacts tracked
9,212Verified emails
9,537Mobile numbers
Unlock all 6,876 companies Free account · no credit card · 2 minutes

The 25 largest accounting outsourcing companies based in the United States

Ranked by team size
Top 25 of 6,876 accounting outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Aug 30, 2026. Evidence rates how directly each company's own description names accounting outsourcing companies: 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.
#CompanyHeadquartersEmployeesContactsVerified emails
1

“Established in 2008, Pacific was formed to serve the clients with the best services in the field of outsourced accounting.”

Source: company website · checked Aug 30, 2026
Irvine, CA, United States1,001-5,00080149
2
KMKPartial evidence

“KMK Ventures is a leading Outsourced Accounting & Tax solutions company providing services to clients based out of USA.”

Source: company website · checked Aug 30, 2026
Los Angeles, CA, United States1,001-5,000612192
3
Metriqe SolutionsPartial evidence

“Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.”

Source: company website · checked Aug 30, 2026
Irving, TX, United States201-500571103
4

“Outsource Partners International (OPI) is a professional services firm dedicated to the outsourcing of finance, accounting, and analytics business processes.”

Source: company website · checked Aug 30, 2026
New York, NY, United States1,001-5,0003986
5
Escalon ServicesIndirect evidence

“If you’re like us, you’re in business to do what you love, build great products, teams, and customer relationships.”

Source: company website · checked Aug 30, 2026
Seattle, WA, United States1,001-5,000372142
6
Unison GlobusStrong evidence

“Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.”

Source: company website · checked Aug 30, 2026
Coral Springs, FL, United States201-500325133
7
MontpacPartial evidence

“Montgomery Pacific Corporation (MontPac) is an outsourced accounting and financial management firm with personnel in the US, UK, and the Philippines.”

Source: company website · checked Aug 30, 2026
Granite Bay, CA, United States201-500294150
8
Oremus Corporate ServicesPartial evidence

“At Oremus Corporate Services, we specialize in delivering top-notch Accounting and Bookkeeping, Secretarial Compliance, Payroll, Tax, HR, and Business Advisory Services.”

Source: company website · checked Aug 30, 2026
Crawfordsville, IN, United States201-50025852
9
TJTIndirect evidence

“Thomas, Judy and Tucker, P.A.”

Source: company website · checked Aug 30, 2026
Wilmington, NC, United States201-500229161
10
IndineroIndirect evidence

“Indinero is on a mission to help every business realize its potential.”

Source: company website · checked Aug 30, 2026
Los Angeles, United States201-50017979
11

“Infinity Globus, a Springline company, is a leading accounting outsourcing firm with over two decades of industry experience, providing tailored taxation and accounting services…”

Source: company website · checked Aug 30, 2026
Dallas, TX, United States201-50017386
12
Siglo BPOPartial evidence

Outsourcing estratégico para empresas globales Siglo BPO cuenta con presencia en más de 14 países, más de 27 años ayudando a empresas a optimizar sus procesos y mejorar su…”

Source: company website · checked Aug 30, 2026
Miami, FL, United States501-1,0001516
13
Meru AccountingPartial evidence

“Meru Accounting is the Accounting firm running under the leadership of CA Rushabh Shah and CA Harnish Shah providing accounting and bookkeeping services across Australia, US…”

Source: company website · checked Aug 30, 2026
Ocala, FL, United States201-5001494
14
SourceinPartial evidence

“SourceIN helps global businesses build finance and accounting operations they can trust.”

Source: company website · checked Aug 30, 2026
New York, NY, United States201-50014380
15
Glocal AccountingPartial evidence

“Welcome to GLOCAL Accounting.”

Source: company website · checked Aug 30, 2026
Delaware, DE, United States501-1,00011536
16
TarsusPartial evidence

“Tarsus is a leading advisory firm in personalized outsourced CFO services, M&A, accounting, payroll, finance, and transactional services designed to help you scale your business…”

Source: company website · checked Aug 30, 2026
Washington, DC, United States51-2001149
17

“CrystalVoxx offers a wide range of accounting and payroll services to suit diverse customer needs [Accounting & Payroll, EMR Integrated Transcription, Revenue Cycle Management,].”

Source: company website · checked Aug 30, 2026
Dallas, TX, United States51-2001094
18

“Anand Tated a seasoned chartered accountant and the CEO of Pacific Accounting & Business Services (PABS) started PABS with his vision to customize modern solutions and deliver…”

Source: company website · checked Aug 30, 2026
Irvine, CA, United States1,001-5,0009755
19
EntigrityPartial evidence

“As a leading solutions provider for more than 850 CPAs and Accounting firms, Entigrity specializes in building offshore teams, offering M&A advisory, coaching, and partnering with…”

Source: company website · checked Aug 30, 2026
Sugar Land, TX, United States1,001-5,0009746
20
DecimalIndirect evidence

“We handle the financial operations so small businesses don’t have to.”

Source: company website · checked Aug 30, 2026
Fully Remote, United States51-2008329
21
Global Shared ServicesStrong evidence

“Global Shared Services (GSS) delivers a wide range of Finance and Accounting (F&A) outsourcing services to companies worldwide.”

Source: company website · checked Aug 30, 2026
Mclean, VA, United States201-5007030
22

“We offer a wide range of custom accounting, bookkeeping and consulting services: Tax Accounting Services, Bookkeeping, Consulting Services, Payroll, Report Generation, QuickBooks…”

Source: company website · checked Aug 30, 2026
New York, NY, United States51-2006319
23

“We take the complication out of any business.”

Source: company website · checked Aug 30, 2026
New York, NY, United States201-5006141
24
GrowthforceIndirect evidence

“GrowthForce, a G&A Partners Company, is a trusted partner helping business owners focus on growth, not getting buried in numbers.”

Source: company website · checked Aug 30, 2026
Brentwood, TN, United States51-2006025
25

“South Plains Implement Ltd is an Accounting company located at 204 North Highway 385, Seminole, Texas 79360.”

Source: company website · checked Aug 30, 2026
Seminole, TX, United States51-200567

Showing 25 of 6,876 accounting outsourcing companies based in the United States

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Accounting outsourcing companies based in the United States at a glance

As of Aug 30, 2026
1-10Median size (employees)
New YorkLargest hub · 169 HQs
9,537Contacts with mobile numbers
Aug 30, 2026Data refreshed

Companies by employee count

1-10
5,727
11-50
902
51-200
160
201-500
33
501-1,000
5
1,001-5,000
10
5,001-10,000
1

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 outsourcing companies, 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: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “accounting outsourcing companies”. 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 accounting outsourcing companies, and records with no verified work email. Companies headquartered outside United States 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.
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, 9,212 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 August 30, 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

How many accounting outsourcing companies are there based in the United States?

There are 6,876 accounting outsourcing companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Pacific Group Of Companies, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most accounting outsourcing companies?

New York leads with 169 headquartered companies, followed by Houston (126) and Los Angeles (100).

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 9,212 verified decision-maker contacts tracked across these 6,876 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 30, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.