Company lists · Data refreshed September 2026

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

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

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 179 companies tracked

RevenueBase identified 179 advisory and outsourcing services headquartered in Columbus, United States as of September 2026 and tracks 1,392 professional contacts across them, including 564 with verified work emails. New York is the largest hub.

This list covers advisory and outsourcing services headquartered in Columbus, 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 23, 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 23, 2026 86% judged on-target in blind review

179Companies

1,392Contacts tracked

564Verified emails

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

Ranked by team size

Top 25 of 179 advisory and outsourcing services based in Columbus, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to advisory and outsourcing 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Columbus Consulting International	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	51-200	134 contacts →
	Indirect evidence “Columbus Consulting has been building trust within the retail and consumer goods markets for over two decades.” Source: RevenueBase Database · checked Sep 23, 2026
2	PSI Proteam Solutions	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	128 contacts →
	Indirect evidence “Established in 1992, PSI (Proteam Solutions Inc) has grown from a one man start up to a multi-million dollar IT Consulting, Workforce Solutions and Enterprise Resource Solutions…” Source: RevenueBase Database · checked Sep 23, 2026
3	Incubit	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	201-500	91 contacts →
	Partial evidence “Incubit is an enterprise solutions company, providing integrated technology consulting, services, products and outsourcing.” Source: RevenueBase Database · checked Sep 23, 2026
4	Mapsys INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	51-200	85 contacts →
	Indirect evidence “Innovative.” Source: RevenueBase Database · checked Sep 23, 2026
5	Flairsoft	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	67 contacts →
	Indirect evidence “Flairsoft is a global information technology firm specializing in e-business, systems integration and business process re-engineering.” Source: RevenueBase Database · checked Sep 23, 2026
6	Holbrook & Manter, Cpas	Partial evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	51-200	48 contacts →
	Partial evidence “We are a team of accounting and business advisory professionals who help companies grow through thoughtful, personalized service.” Source: RevenueBase Database · checked Sep 23, 2026
7	Fisher Management Partners	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	40 contacts →
	Indirect evidence “Fisher Management Partners is a specialized consulting firm designed to address the unique needs of large and middle market businesses.” Source: RevenueBase Database · checked Sep 23, 2026
8	Harquin Bookkeeping And Consulting Services, LLC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	51-200	35 contacts →
	Indirect evidence “At HarQuin Bookkeeping, we help entrepreneurs stop guessing and start growing-with industry-specific bookkeeping and financial services that bring clarity, confidence, and freedom.” Source: RevenueBase Database · checked Sep 23, 2026
9	Upsourced	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	34 contacts →
	Indirect evidence “Upsourced is accounting for a new sense of agency.” Source: RevenueBase Database · checked Sep 23, 2026
10	Consolidated Employer Services, INC	Indirect evidence	Columbus, United StatesHQ checked Sep 23, 2026	11-50	31 contacts →
	Indirect evidence “CES handles administrative and HR needs for small business including risk management, employee benefits, payroll administration and HR consulting.” Source: RevenueBase Database · checked Sep 23, 2026
11	Beanstalk CFO Group	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	28 contacts →
	Indirect evidence “Small, close-knit team of bright people enjoying the important work we do: helping entrepreneurs grow through financial insight.” Source: RevenueBase Database · checked Sep 23, 2026
12	ARM Cpas	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	27 contacts →
	Indirect evidence “Ary Roepcke Mulchaey makes it a point to know your markets, capabilities and expectations so that we can anticipate and respond to your rapidly changing business needs.” Source: RevenueBase Database · checked Sep 23, 2026
13	Navigator Management Partners	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	201-500	26 contacts →
	Indirect evidence “Navigator Management Partners was acquired by Avaap in July 2019.” Source: RevenueBase Database · checked Sep 23, 2026
14	Book Street	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	25 contacts →
	Indirect evidence “When it comes to the dollars + cents of your start-up, smart people don’t do it alone; they hire us.” Source: RevenueBase Database · checked Sep 23, 2026
15	Rieth Jones Advisors	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	22 contacts →
	Indirect evidence “RJA was founded with the intent to do things differently.” Source: RevenueBase Database · checked Sep 23, 2026
16	Community Banc Consulting Of Ohio, INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	21 contacts →
	Indirect evidence “Our Mission Community Banc Consulting of Ohio, Inc.” Source: RevenueBase Database · checked Sep 23, 2026
17	Nanda Technologies	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	19 contacts →
	Indirect evidence “Nanda Technologies can improve the competitiveness of clients through a set of consulting practices that result in knowledge-intensive business solutions with appropriate…” Source: RevenueBase Database · checked Sep 23, 2026
18	Royse Partners Limited	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	17 contacts →
	Indirect evidence “Royse Partners Limited is an independent boutique consulting firm with offices in Columbus, Ohio and Houston, Texas.” Source: RevenueBase Database · checked Sep 23, 2026
19	Gerber, LLC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
20	Oles Associates LLC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	12 contacts →
	Indirect evidence “Public Accounting Firm Our TEAM at Oles + Associates works together to provide exceptional services.” Source: RevenueBase Database · checked Sep 23, 2026
21	Parms Company	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Who we are and what we do.” Source: RevenueBase Database · checked Sep 23, 2026
22	Safeguard-Rick Stallings	Indirect evidence	Columbus, GA, United StatesHQ checked Sep 23, 2026	11-50	10 contacts →
	Indirect evidence “Our purpose is to help and support our clients in managing and growing their businesses, by providing them with high quality products and services - when they want it and how they…” Source: RevenueBase Database · checked Sep 23, 2026
23	Keep Financials	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	8 contacts →
	Indirect evidence “You’re busy and need help.” Source: RevenueBase Database · checked Sep 23, 2026
24	Haran, Watson & Company	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence “The team at Haran, Watson & Company strives to meet your needs.” Source: RevenueBase Database · checked Sep 23, 2026
25	Harper & Company Cpas Plus	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 23, 2026	11-50	6 contacts →
	Indirect evidence “Most people don't just want to do business.” Source: RevenueBase Database · checked Sep 23, 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: advisory and outsourcing services. 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 advisory and outsourcing services.
Partial evidence: Its own public description names part of advisory and outsourcing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advisory and outsourcing services. 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 179 advisory and outsourcing services based in Columbus, United States

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

As of Sep 23, 2026

40.5%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

1019.0%Largest-city concentration · New York

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

126

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Columbus, so it is reported there. Company counts and contact totals on this page are exact for Columbus, over 179 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 advisory and outsourcing 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 Columbus, United States whose own description of what they do matches “advisory and outsourcing 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 advisory and outsourcing 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 advisory and outsourcing services, and records with no verified work email. Companies headquartered outside Columbus 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, 564 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 23, 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.

Advisory and outsourcing services 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 advisory and outsourcing 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 advisory and outsourcing services are there based in Columbus, United States?

RevenueBase identified 179 advisory and outsourcing services headquartered in Columbus, 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?

Columbus Consulting International, headquartered in Columbus, tops this list with the largest team on record.

Which city has the most advisory and outsourcing services?

New York leads with 1824 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 564 verified decision-maker contacts tracked across these 179 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 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 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.