Company lists · Data refreshed September 2026

Top 25 Staff augmentation accounting firms based in the United States

Name: Staff augmentation accounting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 8,666 companies tracked

RevenueBase identified 8,666 staff augmentation accounting firms headquartered in the United States as of September 2026 and tracks 46,820 professional contacts across them, including 14,925 with verified work emails. New York is the largest hub.

This list covers staff augmentation accounting firms 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 29, 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 29, 2026 86% judged on-target in blind review

8,666Companies

46,820Contacts tracked

14,925Verified emails

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The 25 largest staff augmentation accounting firms based in the United States

Ranked by team size

Top 25 of 8,666 staff augmentation accounting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to staff augmentation accounting firms: 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	Prestige Staffing	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	51-200	552 contacts →
	Strong evidence “Prestige Staffing is an award-winning, nationally recognized leader in professional staff augmentation serving local IT, Healthcare, and Accounting & Finance clients as well as…” Source: RevenueBase Database · checked Sep 29, 2026
2	Singerlewak LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	487 contacts →
	Partial evidence “SingerLewak has a 60-year history of serving clients as one of the leading West Coast based public accounting firms; SingerLewak understands the needs of business owners and…” Source: RevenueBase Database · checked Sep 29, 2026
3	Supporting Strategies	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 29, 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 29, 2026
4	Century Group	Partial evidence	El Segundo, CA, United StatesHQ checked Sep 29, 2026	51-200	343 contacts →
	Partial evidence “Century Group is an executive recruiting and professional staffing firm providing top-tier accounting, finance and human resources talent to start-up, mid-market and Fortune 500…” Source: RevenueBase Database · checked Sep 29, 2026
5	Makosi	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	324 contacts →
	Partial evidence “For over 15 years, Makosi has been redefining what’s possible in the accounting and audit industry with cutting-edge, tech-powered workforce solutions.” Source: RevenueBase Database · checked Sep 29, 2026
6	Ascendo Resources	Partial evidence	Coral Gables, FL, United StatesHQ checked Sep 29, 2026	201-500	322 contacts →
	Partial evidence “Ascendo Resources is a certified minority owned award-winning staffing and consulting firm that places quality accounting, financial services, banking, compliance, healthcare…” Source: RevenueBase Database · checked Sep 29, 2026
7	Unison Globus	Partial evidence	Coral Springs, FL, United StatesHQ checked Sep 29, 2026	201-500	320 contacts →
	Partial 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 29, 2026
8	Burgeon IT Services	Strong evidence	Claymont, DE, United StatesHQ checked Sep 29, 2026	51-200	261 contacts →
	Strong evidence “Burgeon is a provider of technical and IT staff augmentation solutions.” Source: RevenueBase Database · checked Sep 29, 2026
9	Kindercare Learing Center	Partial evidence	Portland, OR, United StatesHQ checked Sep 29, 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 29, 2026
10	Ledgent	Partial evidence	Orange, CA, United StatesHQ checked Sep 29, 2026	201-500	248 contacts →
	Partial evidence “Ledgent Finance & Accounting, a business line of Roth Staffing Companies, provides temporary, temporary-to-hire, direct hire, and executive search services for finance and…” Source: RevenueBase Database · checked Sep 29, 2026
11	TJT	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 29, 2026	201-500	231 contacts →
	Indirect evidence “Thomas, Judy and Tucker, P.A.” Source: RevenueBase Database · checked Sep 29, 2026
12	6 Degrees Group	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	n/a	193 contacts →
	Partial evidence “We are a locally owned, full-service accounting and finance placement firm matching top Atlanta employers with skilled professionals.” Source: RevenueBase Database · checked Sep 29, 2026
13	Staffing Solutions	Indirect evidence	Santa Ana, CA, United StatesHQ checked Sep 29, 2026	201-500	192 contacts →
	Indirect evidence “Staffing Solutions goal is to consistently provide our clients with value added service which will enable them to achieve the highest level of success and profitability.” Source: RevenueBase Database · checked Sep 29, 2026
14	Maxonic INC	Indirect evidence	Campbell, CA, United StatesHQ checked Sep 29, 2026	201-500	191 contacts →
	Indirect evidence “Maxonic, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
15	The Thor Group	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 29, 2026	51-200	188 contacts →
	Indirect evidence “Since 1975, The Thor Inc.” Source: RevenueBase Database · checked Sep 29, 2026
16	Larson Gross	Partial evidence	Bellingham, WA, United StatesHQ checked Sep 29, 2026	201-500	186 contacts →
	Partial evidence “Larson Gross is a full-service firm providing comprehensive accounting, bookkeeping, tax, and consulting services to clients throughout the United States and Canada.” Source: RevenueBase Database · checked Sep 29, 2026
17	Infinity Globus, A Springline Company	Partial evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	201-500	168 contacts →
	Partial 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 29, 2026
18	Brilliant	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	162 contacts →
	Partial evidence “About Brilliant® Brilliant is an award-winning staffing and recruiting firm that provides direct-hire and contract staffing services in accounting, finance, technology, and…” Source: RevenueBase Database · checked Sep 29, 2026
19	Mowery & Schoenfeld	Partial evidence	Lincolnshire, IL, United StatesHQ checked Sep 29, 2026	51-200	159 contacts →
	Partial evidence “Founded in 1996, Mowery & Schoenfeld, LLC is a top mid-sized Illinois-based advisory, accounting, and consulting firm built to help businesses and entrepreneurs navigate…” Source: RevenueBase Database · checked Sep 29, 2026
20	Finsmart Accounting	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	155 contacts →
	Partial evidence “Accounting Outsourcing to Drive Growth for Global CPA Firms & MNCs.” Source: RevenueBase Database · checked Sep 29, 2026
21	A.C.Coy Company	Indirect evidence	Canonsburg, PA, United StatesHQ checked Sep 29, 2026	51-200	153 contacts →
	Indirect evidence “The A.C.Coy Company is a national staffing and consulting firm.” Source: RevenueBase Database · checked Sep 29, 2026
22	ALL In ONE Accounting	Partial evidence	Eagan, MN, United StatesHQ checked Sep 29, 2026	51-200	150 contacts →
	Partial evidence “All In One Accounting is your strategic accounting team dedicated to serving growth-minded entrepreneurs and mission-driven nonprofits by supporting profitable growth, protection…” Source: RevenueBase Database · checked Sep 29, 2026
23	Accounting Solutions	Partial evidence	Houston, PA, United StatesHQ checked Sep 29, 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 29, 2026
24	CFO Selections	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 29, 2026	51-200	140 contacts →
	Partial evidence “CFO Selections® provides finance and accounting executive search and interim consulting services to a wide range of organizations in the West.” Source: RevenueBase Database · checked Sep 29, 2026
25	Olsen Thielen And Co., LTD	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 29, 2026	51-200	133 contacts →
	Indirect evidence “Olsen Thielen & Co, Ltd.” Source: RevenueBase Database · checked Sep 29, 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: staff augmentation accounting firms. 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 staff augmentation accounting firms.
Partial evidence: Its own public description names part of staff augmentation accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name staff augmentation accounting firms. 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 8,666 staff augmentation accounting firms based in the United States

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Staff augmentation accounting firms based in the United States at a glance

As of Sep 29, 2026

31.9%Verified-email coverage

5.4Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

6,775

11-50

1,526

51-200

265

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 8,666 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 staff augmentation accounting firms, 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 “staff augmentation accounting firms”. 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 staff augmentation accounting firms), 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 staff augmentation accounting firms, 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, 14,925 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 29, 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.

Staff augmentation accounting firms 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 staff augmentation accounting firms, 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 staff augmentation accounting firms are there based in the United States?

RevenueBase identified 8,666 staff augmentation accounting firms 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?

Prestige Staffing, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most staff augmentation accounting firms?

New York leads with 198 headquartered companies, followed by Houston (157) and Los Angeles (121).

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 14,925 verified decision-maker contacts tracked across these 8,666 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 29, 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.