Company lists · Data refreshed September 2026

Top 25 Advisory and outsourcing services based in Chicago, United States

Name: Advisory and outsourcing services based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 737 companies tracked

RevenueBase identified 737 company matches for advisory and outsourcing services associated with Chicago, United States as of September 2026 and tracks 43,754 professional contacts across them, including 22,518 with verified work emails. Across the United States, New York is the largest hub for this category (1,947 companies); Chicago has 737.

This list covers company matches for advisory and outsourcing services associated with Chicago, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 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 RevenueBase SmartSearch · Exact Recorded Sep 23, 2026 How this list was built

737Companies

43,754Contacts tracked

22,518Verified emails

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The 25 largest advisory and outsourcing services based in Chicago, United States

Ranked by team size

Top 25 of 737 company matches for advisory and outsourcing services based in Chicago, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Baker Tilly US	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	10001+	10,534 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	BDO USA	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	10001+	10,078 contacts →
	Exact match “At BDO, our success is measured by what we achieve together.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	Kearney	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	6,978 contacts →
	Exact match “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Sikich	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,688 contacts →
	Exact match “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	STOUT	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,345 contacts →
	Exact match “Stout is a global advisory firm specializing in corporate finance, accounting and transaction advisory, valuation, financial disputes, claims, and investigations.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	Hinshaw & Culbertson LLP	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	501-1,000	1,188 contacts →
	Exact match “Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	CRESA	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,128 contacts →
	Exact match “With 1,350 employees and 55+ offices across North America, and supported by our global alliance with Knight Frank, Cresa is the world's leading commercial real estate advisory…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Navigant	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	1,029 contacts →
	Exact match “Guidehouse is a leading global provider of consulting services to the public and commercial markets with broad capabilities in management, technology, and risk consulting.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Spaulding Ridge	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	501-1,000	678 contacts →
	Exact match “Spaulding Ridge is the modern GSI for the modern executive team.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	DLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	201-500	546 contacts →
	Exact match “DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Grant Thornton LLP US	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	505 contacts →
	Exact match “Forget what you think you know about professional services.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Weaver Consultants Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	201-500	382 contacts →
	Exact match “From its inception in 1991, Weaver Consultants Group has been founded upon the tenets of attentive and responsive customer service, strong project management, and solid internal…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	Fgmk, LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	201-500	292 contacts →
	Exact match “FGMK is a leading professional services firm providing assurance, tax and advisory services to privately held businesses, global public companies, entrepreneurs, high-net-worth…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	PTS Consulting Services Global	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	201-500	251 contacts →
	Exact match “Overview PTS Consulting Services (People Technology Services), is a firm that specializes in providing IT consulting and Business consulting services.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	247digitize	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	201-500	217 contacts →
	Exact match “247Digitize is an outsourcing and tech partner that optimizes and manages non-core processes so your key resources can focus on productivity and growth.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Accretive Solutions	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	501-1,000	217 contacts →
	Exact match “Your World.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Livingstone	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	51-200	207 contacts →
	Exact match “Livingstone is an international mid-market M&A and debt advisory firm with offices in Amsterdam, Beijing, Chicago, Düsseldorf, Frankfurt, Hamburg, London, Los Angeles, Madrid…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Dpo&co.	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	51-200	187 contacts →
	Exact match “DPO & Co specializes in helping Private Equity firms and their portfolio companies gain fact-based insights during the diligence process and realize post-close synergies and value…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Topel Forman LLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	51-200	174 contacts →
	Exact match “Topel Forman is a Chicago and Denver-based certified public accounting firm serving individuals and professionals to family-owned businesses and corporations, providing…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	Portage Point Partners	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	201-500	173 contacts →
	Exact match “Portage Point is a business advisory, interim management and investment banking firm intensely focused on the middle market.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	RKON	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	51-200	163 contacts →
	Exact match “Since 1998, RKON has delivered IT Transformation helping private equity and enterprise firms achieve Quiet IT from vision to execution.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	CDH	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	51-200	152 contacts →
	Exact match “CDH is an international accounting and consulting firm focused on providing 5 star service to our clients.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	ORBA	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	51-200	148 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	Advanced Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	501-1,000	125 contacts →
	Exact match “Advanced Group provides expertise in talent acquisition and management, outsourcing, and professional services.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	CDI Global M&a	Exact match	Chicago, United StatesHQ recorded Sep 23, 2026	51-200	118 contacts →
	Exact match “CDI Global, established in 1973, is a leader in middle-market, cross-border transactions with over transactions to our credit.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “advisory and outsourcing services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 737 advisory and outsourcing services based in Chicago, United States

See the full list, filter by size, metro and specialty, and access 22,518 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Advisory and outsourcing services based in Chicago, United States at a glance

As of Sep 23, 2026

51.5%Verified-email coverage

59.4Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

472

11-50

177

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 737 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Chicago, United States whose business descriptions match “advisory and outsourcing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 22,518 professional contacts with verified work emails across the full matched dataset. 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 23, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Advisory and outsourcing services by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “advisory and outsourcing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many advisory and outsourcing services are there based in Chicago, United States?

RevenueBase identified 737 company matches for advisory and outsourcing services associated with Chicago, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Baker Tilly US tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most advisory and outsourcing services?

New York leads the United States with 1,947 company records, followed by Houston (804) and Chicago (737).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 22,518 professional contacts with verified work emails tracked across these 737 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 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 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.