Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Chicago, United States

RevenueBase identified 278 professional services firms headquartered in Chicago, United States as of September 2026 and tracks 26,953 professional contacts across them, including 9,800 with verified work emails. New York is the largest hub.

This list covers professional services firms headquartered in Chicago, 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 September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
278Companies
26,953Contacts tracked
9,800Verified emails
Unlock all 278 companies Free signup · no credit card · 500 free credits

The 25 largest professional services firms based in Chicago, United States

Ranked by team size
Top 25 of 278 professional services firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names professional services firms: 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.
#CompanyHeadquartersEmployeesContacts
1
Baker Tilly USIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202610001+10,534

“Baker Tilly is a leading advisory, tax and assurance firm, providing clients with a genuine coast-to-coast and global advantage in major regions of the U.S.”

Source: company website · checked Sep 5, 2026
2
SikichStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261,001-5,0001,688

“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.”

Source: company website · checked Sep 5, 2026
3
DLCIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026201-500546

“DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.”

Source: company website · checked Sep 5, 2026
4
Fgmk, LLCStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026201-500292

“FGMK is a leading professional services firm providing assurance, tax and advisory services to privately held businesses, global public companies, entrepreneurs, high-net-worth…”

Source: company website · checked Sep 5, 2026
5
Accretive SolutionsIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026501-1,000217

“Your World.”

Source: company website · checked Sep 5, 2026
6
Topel Forman LLCStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200174

“Topel Forman is a Chicago and Denver-based certified public accounting firm serving individuals and professionals to family-owned businesses and corporations, providing…”

Source: company website · checked Sep 5, 2026
7
CDHIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200152

“CDH is an international accounting and consulting firm focused on providing 5 star service to our clients.”

Source: company website · checked Sep 5, 2026
8
ORBAIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200148

“Consistently voted as one of the Top 25 Accounting Firms by Crains, ORBA is a certified public accounting and financial advisory firm where individuals and stakeholders of small…”

Source: company website · checked Sep 5, 2026
9
R&m ConsultingIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200102

“R&M is a boutique consulting firm that works in two key areas: tax and internal audit.”

Source: company website · checked Sep 5, 2026
10
Masuda FunaiIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-200102

“Since its founding in 1929, Masuda Funai has focused its practice on successfully representing international and domestic companies entering, operating and expanding in the United…”

Source: company website · checked Sep 5, 2026
11
Archer LewisIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026501-1,00094

“Archer Lewis is your local trusted advisor for accounting and tax services.”

Source: company website · checked Sep 5, 2026
12
BostromStrong evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20072

“Bostrom is a professional services firm offering comprehensive management, consulting and outsourcing to the not-for-profit community.”

Source: company website · checked Sep 5, 2026
13
Latimer Levay Fyock LLCIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5054

“Latimer LeVay Fyock LLC aim is to deliver sound legal advice to our clients within the specific context of their respective business and personal objectives.”

Source: company website · checked Sep 5, 2026
14
Greentarget Global GroupIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20054

“We believe our strength is in helping clients direct-rather than react to-the ongoing conversations about them in the marketplace.”

Source: company website · checked Sep 5, 2026
15
Bronswick Benjamin P.CIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5042

“Bronswick Benjamin does not see your business or you as a series of tasks.”

Source: company website · checked Sep 5, 2026
16
Hoogendoorn And Talbot LLPIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5038

“At Hoogendoorn & Talbot LLP, we focus on helping individuals, families, businesses, and charities resolve their legal issues in a timely and efficient manner.”

Source: company website · checked Sep 5, 2026
17
Richter Consulting, INCIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026201-50036

“When the next move is critical.”

Source: company website · checked Sep 5, 2026
18
Adelfia LLCIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5036

“ADELFIA LLC (the Company) was formed by a group of individuals who possess a wealth of accounting, auditing and industry experience especially in the public sector market, private…”

Source: company website · checked Sep 5, 2026
19
Smart Solutions CPAIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5031

“We empower financial growth by offering consumers and businesses a high level of auditing, accounting and tax services with a personal approach and rapid turnaround time.”

Source: company website · checked Sep 5, 2026
20
Source Consulting GroupIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5029

“Source Consulting Group LLC is the premier full-service consulting firm focusing exclusively on the strategic and operational business process and technology needs of legal and…”

Source: company website · checked Sep 5, 2026
21
CTS ImpactIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202651-20029

“CTS Impact is a hands-on business consulting firm focused on delivering practical solutions to complex business issues in the areas of Finance, IT and Human Resources.”

Source: company website · checked Sep 5, 2026
22Chicago, IL, United StatesHQ checked Sep 5, 202611-5029

“International Management Solutions, Inc (IMS) is an accounting, tax and consulting firm dedicated to assisting European Companies setting up in the USA.”

Source: company website · checked Sep 5, 2026
23
NDH Advisors LLCIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5029

“Accounting & Tax Solutions with Excellence and Integrity.”

Source: company website · checked Sep 5, 2026
24Chicago, IL, United StatesHQ checked Sep 5, 20261-1026

“As of July 2022, Shepard Schwartz & Harris LLP joined Citrin Cooperman.”

Source: company website · checked Sep 5, 2026
25
Desmond & Ahern, LTDIndirect evidence
Chicago, IL, United StatesHQ checked Sep 5, 202611-5025
Source: company website · checked Sep 5, 2026

Showing 25 of 278 professional services firms based in Chicago, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,800 reachable decision-makers.

Free signup · no credit card

See all 278 companies

Professional services firms based in Chicago, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 593 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
184
11-50
66
51-200
16
201-500
4
501-1,000
3
1,001-5,000
2
5,001-10,000
1
10001+
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 278 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 professional services firms, 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: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Chicago, United States whose own description of what they do matches “professional services firms”. 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 professional services firms, and records with no verified work email. Companies headquartered outside Chicago 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. 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, 9,800 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 5, 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.

Professional services firms by metro in the United States

Frequently asked

How many professional services firms are there based in Chicago, United States?

RevenueBase identified 278 professional services firms headquartered in Chicago, 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?

Baker Tilly US, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most professional services firms?

New York leads with 593 headquartered companies, followed by Houston (420) and Atlanta (304).

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 9,800 verified decision-maker contacts tracked across these 278 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 278 professional services firms based in Chicago, United States. Start with a free account, no credit card.

Get the full list

Related lists

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 SmartSearch, 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.