Company lists · Data refreshed September 2026

Top 25 Accounting firm business process outsourcing companies based in Chicago, United States

Name: Accounting firm business process outsourcing companies based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 203 companies tracked

RevenueBase identified 203 accounting firm business process outsourcing companies headquartered in Chicago, United States as of September 2026 and tracks 3,461 professional contacts across them, including 1,612 with verified work emails. Across the United States, New York is the largest hub for this category (428 companies); Chicago has 203.

This list covers accounting firm business process outsourcing companies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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 27, 2026 86% judged on-target in blind review

203Companies

3,461Contacts tracked

1,612Verified emails

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The 25 largest accounting firm business process outsourcing companies based in Chicago, United States

Ranked by team size

Top 25 of 203 accounting firm business process outsourcing companies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to accounting firm business process outsourcing companies: 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	Sikich	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,688 contacts →
	Indirect evidence “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Source: RevenueBase Database · checked Sep 27, 2026
2	Finadvantage	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	239 contacts →
	Partial 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 27, 2026
3	247digitize	Strong evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	217 contacts →
	Strong evidence “247Digitize is an outsourcing and tech partner that optimizes and manages non-core processes so your key resources can focus on productivity and growth.” Source: RevenueBase Database · checked Sep 27, 2026
4	Topel Forman LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	174 contacts →
	Partial evidence “Topel Forman is a Chicago and Denver-based certified public accounting firm serving individuals and professionals to family-owned businesses and corporations, providing…” Source: RevenueBase Database · checked Sep 27, 2026
5	CDH	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	152 contacts →
	Partial evidence “CDH is an international accounting and consulting firm focused on providing 5 star service to our clients.” Source: RevenueBase Database · checked Sep 27, 2026
6	Archer Lewis	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	501-1,000	94 contacts →
	Partial evidence “Archer Lewis is your local trusted advisor for accounting and tax services.” Source: RevenueBase Database · checked Sep 27, 2026
7	Assivo	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	51 contacts →
	Indirect evidence “Your Quiet Advantage” Source: RevenueBase Database · checked Sep 27, 2026
8	Globalcybers	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	47 contacts →
	Indirect evidence “From Talent to Automation, We Power Business Growth & Global Team Expansion We are a non-IT staffing partner helping companies hire and scale their teams efficiently, with…” Source: RevenueBase Database · checked Sep 27, 2026
9	M Mehta & Company	Indirect evidence	Chicago, United StatesHQ checked Sep 27, 2026	51-200	44 contacts →
	Indirect evidence “A Chartered Accountancy firm established in 1950, M Mehta & Company is a progressive firm that runs on the mettle of 54 certified professionals.” Source: RevenueBase Database · checked Sep 27, 2026
10	Adelfia LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	36 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 27, 2026
11	Smart Solutions CPA	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	31 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 27, 2026
12	Desmond & Ahern, LTD	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	25 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
13	Prado & Renteria Certified Public Accountants	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	24 contacts →
	Partial evidence “Established in 1990, Prado & Renteria is the largest Hispanic and woman-owned Public Accounting firm in the State of Illinois, providing services, nationally and internationally.” Source: RevenueBase Database · checked Sep 27, 2026
14	Fiscal Advocate, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	21 contacts →
	Partial evidence “At Fiscal Advocate, we specialize in tech-enabled financial planning and analysis (FP & A), bookkeeping, and accounting services tailored for professional service firms.” Source: RevenueBase Database · checked Sep 27, 2026
15	Checks And Balances INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	19 contacts →
	Partial evidence “If you are in need of bookkeeping or accounting services, Checks and Balances have the training, experience, and expertise to help you.” Source: RevenueBase Database · checked Sep 27, 2026
16	Pransform, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	18 contacts →
	Partial evidence “WHAT WE DO: We help ambitious CPAs / Bookkeeping Firms / Tax Prep Firms grow their business with profit-enhancing, scaleable processing services & implement highly cost effective…” Source: RevenueBase Database · checked Sep 27, 2026
17	Tavola Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	17 contacts →
	Partial evidence “At Tavola Group, we strive to be more than just an accounting firm but rather your partner and advocate.” Source: RevenueBase Database · checked Sep 27, 2026
18	Lopez & Co. Cpas, LTD	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	17 contacts →
	Partial evidence “Lopez & Company, a full-service certified public accounting firm, has been cultivating relationships in Chicago since 2004, providing tax, audit and financial consulting support…” Source: RevenueBase Database · checked Sep 27, 2026
19	Davidson Pargman & Company, LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	12 contacts →
	Indirect evidence “Founded in 2019 by Melissa Davidson and Kelly Pargman.” Source: RevenueBase Database · checked Sep 27, 2026
20	P&g Advisors	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	12 contacts →
	Partial evidence “P&G Advisors, LLC is a boutique accounting firm that targets small and mid-sized businesses that are committed to profiting and growing.” Source: RevenueBase Database · checked Sep 27, 2026
21	Coleman & Associates	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1-10	11 contacts →
	Indirect evidence “It Really is About So Much More than Just the Numbers.” Source: RevenueBase Database · checked Sep 27, 2026
22	Jeffrey W. Krol & Associates, LTD	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	10 contacts →
	Indirect evidence “Founded in 1980, Jeffrey W.” Source: RevenueBase Database · checked Sep 27, 2026
23	ZEN Wealth Management Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	9 contacts →
	Partial evidence “Zen Wealth Management Group Inc provides accounting, tax preparation and financial planning services to individuals and small businesses of all sizes.” Source: RevenueBase Database · checked Sep 27, 2026
24	Sourceit BPO	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	9 contacts →
	Indirect evidence “Get a high-performing outsourced team for your growing business with the help of our top-notch talents.” Source: RevenueBase Database · checked Sep 27, 2026
25	J.S. Richter LTD	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	8 contacts →
	Indirect evidence “J.S.” Source: RevenueBase Database · checked Sep 27, 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: accounting firm business process outsourcing companies. 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 accounting firm business process outsourcing companies.
Partial evidence: Its own public description names part of accounting firm business process outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting firm business process outsourcing companies. 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 203 accounting firm business process outsourcing companies based in Chicago, United States

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Accounting firm business process outsourcing companies based in Chicago, United States at a glance

As of Sep 27, 2026

46.6%Verified-email coverage

17.0Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

149

11-50

51-200

201-500

501-1,000

1,001-5,000

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 203 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 accounting firm business process outsourcing companies, 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 Chicago, United States whose own description of what they do matches “accounting firm business process outsourcing companies”. 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 accounting firm business process outsourcing companies), 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 accounting firm business process outsourcing companies, 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 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, 1,612 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 27, 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.

Accounting firm business process outsourcing companies by metro in the United States

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 accounting firm business process outsourcing companies, 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 accounting firm business process outsourcing companies are there based in Chicago, United States?

RevenueBase identified 203 accounting firm business process outsourcing companies 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?

Sikich, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most accounting firm business process outsourcing companies?

New York leads the United States with 428 headquartered companies, followed by Houston (301) and Los Angeles (231). Chicago has 203.

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 1,612 verified decision-maker contacts tracked across these 203 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 27, 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.