Company lists · Data refreshed September 2026

Top 25 Outsourcing finance and accounting services based in the United States

RevenueBase identified 6,551 outsourcing finance and accounting services headquartered in the United States as of September 2026 and tracks 35,122 professional contacts across them, including 10,329 with verified work emails. New York is the largest hub.

This list covers outsourcing finance and 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
6,551Companies
35,122Contacts tracked
10,329Verified emails
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The 25 largest outsourcing finance and accounting services based in the United States

Ranked by team size
Top 25 of 6,551 outsourcing finance and 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 finance and 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceAustin, TX, United StatesHQ checked Sep 21, 202610001+2,231 contacts →

Strong 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
2Partial evidenceAustin, TX, United StatesHQ checked Sep 21, 20261,001-5,0001,721 contacts →

Partial evidence

“Consero Global, backed by BV Investment Partners, is the pioneer of Finance as a Service (FaaS), disrupting how Investment Managers and PE/VC-backed software, business services…”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 21, 2026n/a913 contacts →

Partial evidence

“B Consulting provides a plug-and-play financial operations team for high-growth startups.”

Source: RevenueBase Database · checked Sep 21, 2026
4Partial evidenceIrving, TX, United StatesHQ checked Sep 21, 2026201-500571 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceSalt Lake City, UT, United StatesHQ checked Sep 21, 2026201-500482 contacts →

Indirect evidence

“We specialize in providing full-service CFOs, controllers, and operational accountants to consult with our clients.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceBeverly, MA, United StatesHQ checked Sep 21, 202651-200415 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
7Strong evidenceNew York, NY, United StatesHQ checked Sep 21, 20261,001-5,000397 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 21, 2026
8Indirect evidenceDover, DE, United StatesHQ checked Sep 21, 20261,001-5,000367 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
9Strong evidenceNew York, United StatesHQ checked Sep 21, 2026201-500339 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
10Strong evidenceCoral Springs, FL, United StatesHQ checked Sep 21, 2026201-500320 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
11Strong evidenceGranite Bay, CA, United StatesHQ checked Sep 21, 2026201-500298 contacts →

Strong 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
12Indirect evidenceSan Antonio, TX, United StatesHQ checked Sep 21, 202651-200249 contacts →

Indirect evidence

“The true performance of your business shouldn’t be a mystery.”

Source: RevenueBase Database · checked Sep 21, 2026
13Strong evidenceChicago, IL, United StatesHQ checked Sep 21, 2026201-500239 contacts →

Strong evidence

“FinAdvantage is a tech-powered boutique finance and accounting operations firm offering a full suite of services for over a decade.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceLos Angeles, United StatesHQ checked Sep 21, 2026201-500175 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
15Strong evidenceDallas, TX, United StatesHQ checked Sep 21, 2026201-500168 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
16Strong evidenceNew York, NY, United StatesHQ checked Sep 21, 202651-200155 contacts →

Strong evidence

Accounting Outsourcing to Drive Growth for Global CPA Firms & MNCs.”

Source: RevenueBase Database · checked Sep 21, 2026
17Strong evidenceHonolulu, HI, United StatesHQ checked Sep 21, 202651-200134 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
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026201-500123 contacts →

Indirect evidence

“We help great entrepreneurs build great companies.”

Source: RevenueBase Database · checked Sep 21, 2026
19Partial evidenceSan Diego, CA, United StatesHQ checked Sep 21, 202651-200120 contacts →

Partial evidence

“At Optima Office, we understand the challenges businesses face with financial management and HR services.”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceDelaware, DE, United StatesHQ checked Sep 21, 2026501-1,000115 contacts →

Partial evidence

“Welcome to GLOCAL Accounting.”

Source: RevenueBase Database · checked Sep 21, 2026
21Strong evidenceWashington, DC, United StatesHQ checked Sep 21, 202651-200115 contacts →

Strong 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
22Strong evidenceMonroeville, PA, United StatesHQ checked Sep 21, 202651-200109 contacts →

Strong 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
23Partial evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-200108 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
24Partial evidenceCoronado, CA, United StatesHQ checked Sep 21, 202651-200104 contacts →

Partial evidence

“Running a multi-unit franchise business is complex, your accounting shouldn’t be.”

Source: RevenueBase Database · checked Sep 21, 2026
25Strong evidencePalatine, United StatesHQ checked Sep 21, 2026n/a101 contacts →

Strong 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

Showing 25 of 6,551 outsourcing finance and accounting services based in the United States

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Outsourcing finance and accounting services based in the United States at a glance

As of Sep 21, 2026
29.4%Verified-email coverage
5.4Average contacts per company
1-10Median size (employees)
2.5%Largest-city concentration · New York
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
5,471
11-50
881
51-200
142
201-500
27
501-1,000
4
1,001-5,000
7
5,001-10,000
1
10001+
2

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 6,551 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 finance and 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 finance and 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 finance and 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 finance and 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, 10,329 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 finance and 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 finance and 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 finance and accounting services are there based in the United States?

RevenueBase identified 6,551 outsourcing finance and 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 finance and accounting services?

New York leads with 162 headquartered companies, followed by Houston (120) and Los Angeles (104).

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 10,329 verified decision-maker contacts tracked across these 6,551 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.