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Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Indianapolis, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 83 companies tracked

RevenueBase identified 83 professional services firms headquartered in Indianapolis, United States as of September 2026 and tracks 2,049 professional contacts across them, including 1,195 with verified work emails. New York is the largest hub.

This list covers professional services firms headquartered in Indianapolis, 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
83Companies
2,049Contacts tracked
1,195Verified emails
Unlock all 83 companies Free signup · no credit card · 500 free credits

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

Ranked by team size
Top 25 of 83 professional services firms based in Indianapolis, 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
KSM Katz, Sapper & MillerIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 2026501-1,000788

“KSM (Katz, Sapper & Miller) is a nationally recognized advisory, tax, and audit firm.”

Source: company website · checked Sep 5, 2026
2
CapincrouseStrong evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202651-200262

“As a national full-service accounting and advisory firm exclusively serving nonprofit organizations, CapinCrouse provides professional solutions to organizations whose outcomes…”

Source: company website · checked Sep 5, 2026
3
Engaging Solutions, LLCIndirect evidence
Indianapolis, United StatesHQ checked Sep 5, 202651-20099

“Engaging Solutions is a multi-faceted management consulting firm with the personnel and resources to accomplish everything from high level management and auditing to ground-level…”

Source: company website · checked Sep 5, 2026
4
Bgbc, A Springline CompanyIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202651-20083

“BGBC, a Springline Company is a full-service, Indianapolis-based advisory firm offering assurance, tax, and consulting services.”

Source: company website · checked Sep 5, 2026
5
Donovan CpasIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202651-20061

“Donovan CPAs is one of the most trusted Indianapolis CPA firms, serving businesses and individuals as a complete financial-needs resource for over 50 years.”

Source: company website · checked Sep 5, 2026
6
Lewis KappesIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202651-20051

“Lewis Kappes is an Indianapolis based law firm composed of experienced attorneys who apply a client-focused approach to deliver effective and innovative solutions.”

Source: company website · checked Sep 5, 2026
7
Sponsel CPA GroupIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5042

“About Sponsel CPA Group, LLC Sponsel CPA Group is one of Indianapolis’ top full service accounting/CPA firms.”

Source: company website · checked Sep 5, 2026
8
Cbiz SomersetIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 2026201-50041

“For over 60 years, our team has been guiding clients through the critical decisions that impact their financial health.”

Source: company website · checked Sep 5, 2026
9
Pile CpasIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5039

“Founded in 1938 by Roy J.”

Source: company website · checked Sep 5, 2026
10
Agresta, Storms & O'leary PCIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5035

“Agresta, Storms & O’Leary is a full service accounting firm offering assurance, tax, and business consulting services, including bank and finance consulting, business valuations…”

Source: company website · checked Sep 5, 2026
11
London Witte LLPIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5030

“London Witte is a leading certified public accounting and consulting firm dedicated to helping clients maximize their full potential.”

Source: company website · checked Sep 5, 2026
12
Bradley AssociatesIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5027

“At Bradley Associates, we are focused on providing strategic, value-added financial and business consulting services to the healthcare industry.”

Source: company website · checked Sep 5, 2026
13
Ontarget CPAIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5022

“As a small to medium size business or as an individual, it can be a challenge to find the time and energy to address the financial aspect of your company or personal finances.”

Source: company website · checked Sep 5, 2026
14
The Watermark GroupIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5021

“You need to be able to make the most of everything you've got, and pulling that off takes more than people expect.”

Source: company website · checked Sep 5, 2026
15
LWG Cpas & AdvisorsIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5019

“Many business owners believe that the total on a balance sheet tells them everything they need to know.”

Source: company website · checked Sep 5, 2026
16
Greenwalt Cpas, Inc. Barnes DennigIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5018

“At Greenwalt, we want your business to grow.”

Source: company website · checked Sep 5, 2026
17
TMA AccountingIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5017

“TMA Small Business Accounting, P.C.”

Source: company website · checked Sep 5, 2026
18
Marietta CpasIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5014

“The initial business premise was really quite simple.”

Source: company website · checked Sep 5, 2026
19
Beyond Accounting LLCIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5013

“We are passionate about helping small businesses go Beyond Expectations on their journey to success by bringing clarity and confidence!”

Source: company website · checked Sep 5, 2026
20
CG Cpas, INC Previously Cox, Beckman, Goss & COIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5012

“CG CPAs.”

Source: company website · checked Sep 5, 2026
21
Kelley Hardesty Smith & COIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5011

“Our services are designed to provide more than financial oversight-they deliver strategic value.”

Source: company website · checked Sep 5, 2026
22
MKR Cpas & AdvisorsIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-5010

“At MKR CPAs and Advisors, we value people and we value relationships.”

Source: company website · checked Sep 5, 2026
23
J.R. Helms & Associates, P.CIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 20261-1010

“J.”

Source: company website · checked Sep 5, 2026
24
Aspire Cpas, PCIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 202611-509

“Established in 1985, Aspire CPAs is a full-service public accounting firm that specializes in servicing small to medium-sized emerging business clients and other not-for-profit…”

Source: company website · checked Sep 5, 2026
25
Vincere TAXIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 20261-109

“A specialist in simplifying your life with tax preparation, accounting, and business planning services.”

Source: company website · checked Sep 5, 2026

Showing 25 of 83 professional services firms based in Indianapolis, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,195 reachable decision-makers.

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Professional services firms based in Indianapolis, 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
45
11-50
29
51-200
7
201-500
1
501-1,000
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 Indianapolis, over 83 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 Indianapolis, 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 Indianapolis 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, 1,195 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 Indianapolis, United States?

RevenueBase identified 83 professional services firms headquartered in Indianapolis, 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?

KSM Katz, Sapper & Miller, headquartered in Indianapolis, 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 1,195 verified decision-maker contacts tracked across these 83 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 83 professional services firms based in Indianapolis, United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · Professional services firms in United States · All United States lists · All Professional services firms lists · New 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.

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