Company lists · Data refreshed September 2026

Top 25 Accounting business process outsourcing companies based in the United States

Name: Accounting business process outsourcing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 14,117 companies tracked

RevenueBase identified 14,117 accounting business process outsourcing companies headquartered in the United States as of September 2026 and tracks 78,242 professional contacts across them, including 20,760 with verified work emails. New York is the largest hub.

This list covers accounting business process 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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 27, 2026 86% judged on-target in blind review

14,117Companies

78,242Contacts tracked

20,760Verified emails

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The 25 largest accounting business process outsourcing companies based in the United States

Ranked by team size

Top 25 of 14,117 accounting business process outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to accounting business process outsourcing companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Datamatics Business Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,000 contacts →
	Partial evidence “Datamatics Business Solutions is a global Business Process Management (BPM) company delivering technology-led and AI-enabled solutions that help organizations improve efficiency…” Source: RevenueBase Database · checked Sep 27, 2026
2	Stream Global Services	Partial evidence	Eagan, MN, United StatesHQ checked Sep 27, 2026	10001+	2,772 contacts →
	Partial evidence “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Source: RevenueBase Database · checked Sep 27, 2026
3	Personiv	Partial evidence	Austin, TX, United StatesHQ checked Sep 27, 2026	10001+	2,231 contacts →
	Partial evidence “OUR PEOPLE, YOUR PRIORITIES Streamline your finance & accounting team at 50% cost savings with a team as small as one.” Source: RevenueBase Database · checked Sep 27, 2026
4	SEBPO	Indirect evidence	Marlton, NJ, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,237 contacts →
	Indirect evidence “SEBPO transforms operational complexity into a seamless, strategic advantage.” Source: RevenueBase Database · checked Sep 27, 2026
5	Shore Group Associates	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	680 contacts →
	Indirect evidence “Shore Group eliminates manual, repetitive operations so small and mid-sized businesses can scale with confidence, without adding headcount or complexity.” Source: RevenueBase Database · checked Sep 27, 2026
6	Buwelo Corporate	Strong evidence	Las Vegas, NV, United StatesHQ checked Sep 27, 2026	1,001-5,000	598 contacts →
	Strong evidence “Buwelo BPO is a global Business Process Outsourcing provider of multi-channel customer experience and back office solutions.” Source: RevenueBase Database · checked Sep 27, 2026
7	Metriqe Solutions	Partial evidence	Irving, TX, United StatesHQ checked Sep 27, 2026	201-500	571 contacts →
	Partial evidence “Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.” Source: RevenueBase Database · checked Sep 27, 2026
8	OWN Business Management	Partial evidence	Ajman Free Zone, United StatesHQ checked Sep 27, 2026	n/a	490 contacts →
	Partial evidence “OBM is a leading business process management company in UAE which provides client driven business management solutions.” Source: RevenueBase Database · checked Sep 27, 2026
9	OKS Group	Indirect evidence	Bala Cynwyd, PA, United StatesHQ checked Sep 27, 2026	1,001-5,000	416 contacts →
	Indirect evidence “Founded in 1985, OKS Group provides customized BPO and LPO services to some of the world's largest and most demanding companies.” Source: RevenueBase Database · checked Sep 27, 2026
10	Supporting Strategies	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 27, 2026	51-200	415 contacts →
	Indirect evidence “Outsourced Bookkeeping and Controller Services Supporting Strategies provides outsourced bookkeeping services, controller services and operational support to growing businesses.” Source: RevenueBase Database · checked Sep 27, 2026
11	Global Agility Solutions	Strong evidence	Austin, TX, United StatesHQ checked Sep 27, 2026	501-1,000	403 contacts →
	Strong evidence “Global Agility Solutions offers comprehensive onshore, offshore and hybrid Business Process Outsourcing (BPO) services and solutions focused on automating and advancing repeatable…” Source: RevenueBase Database · checked Sep 27, 2026
12	Outsource Partners International Alumni	Strong evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	397 contacts →
	Strong evidence “Outsource Partners International (OPI) is a professional services firm dedicated to the outsourcing of finance, accounting, and analytics business processes.” Source: RevenueBase Database · checked Sep 27, 2026
13	Bench Accounting By Mainstreet	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	201-500	366 contacts →
	Indirect evidence “At Bench by Mainstreet, we believe small business owners deserve more than just software - they deserve real financial support.” Source: RevenueBase Database · checked Sep 27, 2026
14	Cohesive	Indirect evidence	Exton, PA, United StatesHQ checked Sep 27, 2026	501-1,000	364 contacts →
	Indirect evidence “Cohesive is a leading solutions provider and systems integrator for IBM Maximo.” Source: RevenueBase Database · checked Sep 27, 2026
15	Advantage ONE TAX Consulting	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 27, 2026	201-500	347 contacts →
	Indirect evidence “Advantage One Tax Consulting is a multi-disciplinary group of highly experienced tax professionals who understand the tax practice in its true spirit, examine the issues it faces…” Source: RevenueBase Database · checked Sep 27, 2026
16	Delegate CX	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	201-500	341 contacts →
	Indirect evidence “Growth Made Achievable.” Source: RevenueBase Database · checked Sep 27, 2026
17	OHI	Strong evidence	New York, United StatesHQ checked Sep 27, 2026	201-500	339 contacts →
	Strong evidence “OHI is a specialized finance and real estate accounting outsourcing service provider with operations out of New Delhi (India) since 2006.” Source: RevenueBase Database · checked Sep 27, 2026
18	Eplanet Global	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 27, 2026	501-1,000	329 contacts →
	Indirect evidence “About Eplanet Global Since our inception in 2003, Eplanet Global has been a trailblazer in the tech-driven BPO industry.” Source: RevenueBase Database · checked Sep 27, 2026
19	Unison Globus	Strong evidence	Coral Springs, FL, United StatesHQ checked Sep 27, 2026	201-500	320 contacts →
	Strong evidence “Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.” Source: RevenueBase Database · checked Sep 27, 2026
20	Montpac	Partial evidence	Granite Bay, CA, United StatesHQ checked Sep 27, 2026	201-500	298 contacts →
	Partial evidence “Montgomery Pacific Corporation (MontPac) is an outsourced accounting and financial management firm with personnel in the US, UK, and the Philippines.” Source: RevenueBase Database · checked Sep 27, 2026
21	Cognet	Partial evidence	Orlando, FL, United StatesHQ checked Sep 27, 2026	501-1,000	297 contacts →
	Partial evidence “CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.” Source: RevenueBase Database · checked Sep 27, 2026
22	Ardem Incorporated	Strong evidence	Princeton, NJ, United StatesHQ checked Sep 27, 2026	1,001-5,000	271 contacts →
	Strong evidence “ARDEM Incorporated delivers strategic business process outsourcing (BPO) and AI automation solutions that help organizations drive productivity, reduce costs, and scale…” Source: RevenueBase Database · checked Sep 27, 2026
23	Mayatax	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	501-1,000	269 contacts →
	Indirect evidence “Growth exposes financial weakness.” Source: RevenueBase Database · checked Sep 27, 2026
24	Kindercare Learing Center	Partial evidence	Portland, OR, United StatesHQ checked Sep 27, 2026	n/a	257 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 27, 2026
25	SAPRO	Strong evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	252 contacts →
	Strong evidence “SAPRO is a global, tech-enabled talent outsourcing firm specializing in Assurance, Tax, Advisory, and Client Accounting Services (CAS).” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: accounting business process outsourcing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names accounting business process outsourcing companies.
Partial evidence: Its own public description names part of accounting business process outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting business process outsourcing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 14,117 accounting business process outsourcing companies based in the United States

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Accounting business process outsourcing companies based in the United States at a glance

As of Sep 27, 2026

26.5%Verified-email coverage

5.5Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11,300

11-50

2,187

51-200

387

201-500

105

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 14,117 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 business process outsourcing companies, 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 the United States whose own description of what they do matches “accounting business process outsourcing companies”. 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 business process outsourcing companies), 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 business process 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 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, 20,760 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 27, 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 business process outsourcing companies by metro

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 business process outsourcing companies, 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 business process outsourcing companies are there based in the United States?

RevenueBase identified 14,117 accounting business process outsourcing companies headquartered in the 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?

Datamatics Business Solutions, headquartered in New York, tops this list with the largest team on record.

Which city has the most accounting business process outsourcing companies?

New York leads with 325 headquartered companies, followed by Houston (243) and Los Angeles (187).

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 20,760 verified decision-maker contacts tracked across these 14,117 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 27, 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.