Company lists · Data refreshed September 2026

Top 25 Outsourcing accounting services based in the United States

Name: Outsourcing accounting services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 6,992 companies tracked

RevenueBase identified 6,992 outsourcing accounting services headquartered in the United States as of September 2026 and tracks 32,096 professional contacts across them, including 9,377 with verified work emails. New York is the largest hub.

This list covers outsourcing accounting services 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 21, 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 21, 2026 86% judged on-target in blind review

6,992Companies

32,096Contacts tracked

9,377Verified emails

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The 25 largest outsourcing accounting services based in the United States

Ranked by team size

Top 25 of 6,992 outsourcing accounting services based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to outsourcing accounting services: 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	Personiv	Partial evidence	Austin, TX, United StatesHQ checked Sep 21, 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 21, 2026
2	Metriqe Solutions	Partial evidence	Irving, TX, United StatesHQ checked Sep 21, 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 21, 2026
3	Supporting Strategies	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 21, 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 21, 2026
4	OHI	Strong evidence	New York, United StatesHQ checked Sep 21, 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 21, 2026
5	Unison Globus	Strong evidence	Coral Springs, FL, United StatesHQ checked Sep 21, 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 21, 2026
6	Montpac	Partial evidence	Granite Bay, CA, United StatesHQ checked Sep 21, 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 21, 2026
7	TGG	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 21, 2026	51-200	249 contacts →
	Indirect evidence “The true performance of your business shouldn’t be a mystery.” Source: RevenueBase Database · checked Sep 21, 2026
8	Indinero	Indirect evidence	Los Angeles, United StatesHQ checked Sep 21, 2026	201-500	175 contacts →
	Indirect evidence “Indinero is on a mission to help every business realize its potential.” Source: RevenueBase Database · checked Sep 21, 2026
9	Infinity Globus, A Springline Company	Strong evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	201-500	168 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 21, 2026
10	Finsmart Accounting	Strong evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	155 contacts →
	Strong evidence “Accounting Outsourcing to Drive Growth for Global CPA Firms & MNCs.” Source: RevenueBase Database · checked Sep 21, 2026
11	Accounting Solutions	Partial evidence	Houston, PA, United StatesHQ checked Sep 21, 2026	n/a	149 contacts →
	Partial evidence “Accounting Solutions provides a wide range of services to individuals and businesses in a variety of industries.” Source: RevenueBase Database · checked Sep 21, 2026
12	Vertaccount	Strong evidence	Honolulu, HI, United StatesHQ checked Sep 21, 2026	51-200	134 contacts →
	Strong evidence “Vertaccount is a boutique Finance and Accounting Outsourcing provider with offices and affiliates in the United States, Australia, Singapore and the Philippines.” Source: RevenueBase Database · checked Sep 21, 2026
13	Optima Office, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	120 contacts →
	Indirect evidence “At Optima Office, we understand the challenges businesses face with financial management and HR services.” Source: RevenueBase Database · checked Sep 21, 2026
14	Glocal Accounting	Partial evidence	Delaware, DE, United StatesHQ checked Sep 21, 2026	501-1,000	115 contacts →
	Partial evidence “Welcome to GLOCAL Accounting.” Source: RevenueBase Database · checked Sep 21, 2026
15	Tarsus	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	115 contacts →
	Partial 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: RevenueBase Database · checked Sep 21, 2026
16	Boston Financial Advisory Group	Partial evidence	Monroeville, PA, United StatesHQ checked Sep 21, 2026	51-200	109 contacts →
	Partial evidence “Boston Financial Advisory Group is a one-stop-shop solution for all your Accounting and Financial consulting needs.” Source: RevenueBase Database · checked Sep 21, 2026
17	Crystalvoxx LLC Accounting Services	Partial evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	51-200	108 contacts →
	Partial evidence “CrystalVoxx offers a wide range of accounting and payroll services to suit diverse customer needs [Accounting & Payroll, EMR Integrated Transcription, Revenue Cycle Management,].” Source: RevenueBase Database · checked Sep 21, 2026
18	Indevia Accounting, INC	Partial evidence	Coronado, CA, United StatesHQ checked Sep 21, 2026	51-200	104 contacts →
	Partial evidence “Running a multi-unit franchise business is complex, your accounting shouldn’t be.” Source: RevenueBase Database · checked Sep 21, 2026
19	B.T. Bryan Accounting, INC	Partial evidence	Palatine, United StatesHQ checked Sep 21, 2026	n/a	101 contacts →
	Partial evidence “We specialize in accounting services for small and family-owned businesses-serving as the perfect extension of your company’s financial team.” Source: RevenueBase Database · checked Sep 21, 2026
20	Pacific Accounting & Business Services INC	Partial evidence	Irving, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	97 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
21	Rivero, Gordimer & Company, P.A	Partial evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	51-200	92 contacts →
	Partial evidence “Rivero, Gordimer & Company is a full-service accounting and advisory firm based in Tampa Bay.” Source: RevenueBase Database · checked Sep 21, 2026
22	Capactix Business Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	92 contacts →
	Partial evidence “We are one of the leading offshore companies that offer the best in the industry staffing solutions to CPAs, accounting firms, and other companies.” Source: RevenueBase Database · checked Sep 21, 2026
23	Acuity Accounting	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	51-200	89 contacts →
	Partial evidence “Acuity is the modern-day accounting organization built specifically for startups and small businesses.” Source: RevenueBase Database · checked Sep 21, 2026
24	BTQ Financial	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	88 contacts →
	Indirect evidence “Consero Global Acquires BTQ Financial, Expanding Its Reach to the Non-Profit World With a Leading Provider of Finance as a Service to the Sector.” Source: RevenueBase Database · checked Sep 21, 2026
25	Bookkeeping Express	Indirect evidence	Reston, VA, United StatesHQ checked Sep 21, 2026	51-200	78 contacts →
	Indirect evidence “We’re here to help businesses.” Source: RevenueBase Database · checked Sep 21, 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: outsourcing accounting services. 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 outsourcing accounting services.
Partial evidence: Its own public description names part of outsourcing accounting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outsourcing accounting services. 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 6,992 outsourcing accounting services based in the United States

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Outsourcing accounting services based in the United States at a glance

As of Sep 21, 2026

29.2%Verified-email coverage

4.6Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

5,877

11-50

910

51-200

151

201-500

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 6,992 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 outsourcing accounting services, 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 “outsourcing accounting services”. 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 outsourcing accounting services), 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 outsourcing accounting services, 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, 9,377 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 21, 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.

Outsourcing accounting services 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 outsourcing accounting services, 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 outsourcing accounting services are there based in the United States?

RevenueBase identified 6,992 outsourcing accounting services 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?

Personiv, headquartered in Austin, tops this list with the largest team on record.

Which city has the most outsourcing accounting services?

New York leads with 163 headquartered companies, followed by Houston (120) and Los Angeles (109).

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 9,377 verified decision-maker contacts tracked across these 6,992 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 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 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.