Company lists · Data refreshed September 2026

Top 25 Public accounting firms based in Indianapolis, United States

RevenueBase identified 42 public accounting firms headquartered in Indianapolis, United States as of September 2026 and tracks 1,343 professional contacts across them, including 843 with verified work emails. New York is the largest hub.

This list covers public accounting 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 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 14, 2026 86% judged on-target in blind review
42Companies
1,343Contacts tracked
843Verified emails
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The 25 largest public accounting firms based in Indianapolis, United States

Ranked by team size
Top 25 of 42 public accounting firms based in Indianapolis, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to public accounting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 2026501-1,000788 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202651-20083 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5079 contacts →

Indirect evidence

“Mission: Our mission is to provide exceptional service to our clients in an excellent work environment, so that our clients flourish and our associates thrive.”

Source: RevenueBase Database · checked Sep 14, 2026
4Partial evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5042 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5039 contacts →

Indirect evidence

“Founded in 1938 by Roy J.”

Source: RevenueBase Database · checked Sep 14, 2026
6Partial evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5035 contacts →

Partial evidence

“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: RevenueBase Database · checked Sep 14, 2026
7Strong evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5030 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
8Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5022 contacts →

Indirect evidence

“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: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5019 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
10Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5018 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5013 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
12Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5012 contacts →

Indirect evidence

“CG CPAs.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5011 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-5010 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-1010 contacts →

Indirect evidence

“J.”

Source: RevenueBase Database · checked Sep 14, 2026
16Strong evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-509 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-509 contacts →

Indirect evidence

“Our founding partners formed Alerding CPA Group in 1998 because they believed their clients would be better served with more personalized service.”

Source: RevenueBase Database · checked Sep 14, 2026
18Partial evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-109 contacts →

Partial evidence

Accounting & Bookkeeping Services Our Firm offers a complete range of accounting services, including receivables, payables, and payroll management.”

Source: RevenueBase Database · checked Sep 14, 2026
19Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 202611-508 contacts →

Indirect evidence

“A.C.T.”

Source: RevenueBase Database · checked Sep 14, 2026
20Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-108 contacts →

Indirect evidence

“Welcome to Pattar & Co.”

Source: RevenueBase Database · checked Sep 14, 2026
21Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-107 contacts →

Indirect evidence

“Kehlenbrink, Lawrence & Pauckner (KLP) is a full service CPA firm located in Indianapolis.”

Source: RevenueBase Database · checked Sep 14, 2026
22Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-106 contacts →

Indirect evidence

“WHERE RELATIONSHIPS MATTER.”

Source: RevenueBase Database · checked Sep 14, 2026
23Partial evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-106 contacts →

Partial evidence

“Lawrie & Dunbar, CPAs is a full service tax, accounting and business consulting firm.”

Source: RevenueBase Database · checked Sep 14, 2026
24Partial evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-105 contacts →

Partial evidence

“Bottom Line Advisors is an accounting firm built to help businesses, from start-ups to larger established companies, manage their financial and accounting back office.”

Source: RevenueBase Database · checked Sep 14, 2026
25Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 14, 20261-105 contacts →

Indirect evidence

“John Pettit founded Pettit & Company in June of 2014.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 25 of 42 public accounting 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 843 reachable decision-makers.

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Public accounting firms based in Indianapolis, United States at a glance

As of Sep 14, 2026
62.8%Verified-email coverage
32.0Average contacts per company
1-10Median size (employees)
585.7%Largest-city concentration · New York
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
19
51-200
1
501-1,000
1

Email recency for this list is measured across the whole United States list rather than for Indianapolis, so it is reported there. Company counts and contact totals on this page are exact for Indianapolis, over 42 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 public accounting firms, 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 Indianapolis, United States whose own description of what they do matches “public accounting firms”. 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 public accounting firms), 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 public accounting 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 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, 843 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 14, 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.

Public accounting firms 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 public accounting firms, 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 public accounting firms are there based in Indianapolis, United States?

RevenueBase identified 42 public accounting 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 public accounting firms?

New York leads with 246 headquartered companies, followed by Houston (163) and Atlanta (106).

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 843 verified decision-maker contacts tracked across these 42 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 14, 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.