Company lists · Data refreshed September 2026

Top 25 Accounting software integration firms based in the United States

Name: Accounting software integration firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 989 companies tracked

RevenueBase identified 989 accounting software integration firms headquartered in the United States as of September 2026 and tracks 11,266 professional contacts across them, including 4,132 with verified work emails. New York is the largest hub.

This list covers accounting software integration firms headquartered in the 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

989Companies

11,266Contacts tracked

4,132Verified emails

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The 25 largest accounting software integration firms based in the United States

Ranked by team size

Top 25 of 989 accounting software integration firms based in the 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 software integration 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Karbon	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	201-500	364 contacts →
	Partial evidence “Karbon is the collaborative practice management platform for accounting firms.” Source: RevenueBase Database · checked Sep 27, 2026
2	Taxdome	Partial evidence	Cheyenne, WY, United StatesHQ checked Sep 27, 2026	201-500	340 contacts →
	Partial evidence “TaxDome is the leading practice management platform built for full-service tax, bookkeeping, and accounting firms.” Source: RevenueBase Database · checked Sep 27, 2026
3	CARET	Partial evidence	Del Mar, CA, United StatesHQ checked Sep 27, 2026	201-500	331 contacts →
	Partial evidence “CARET brings the latest in technology and automation to over legal and accounting firms, empowering highly skilled professionals to refocus their expertise on what truly matters.” Source: RevenueBase Database · checked Sep 27, 2026
4	Makosi	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	324 contacts →
	Partial evidence “For over 15 years, Makosi has been redefining what’s possible in the accounting and audit industry with cutting-edge, tech-powered workforce solutions.” Source: RevenueBase Database · checked Sep 27, 2026
5	1-800accountant	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	320 contacts →
	Partial evidence “1-800Accoutant is America’s leading virtual accounting firm for small businesses.” Source: RevenueBase Database · checked Sep 27, 2026
6	DSD Business Systems	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 27, 2026	51-200	307 contacts →
	Indirect evidence “Founded in 1984 in San Diego, DSD Business Systems is an award-winning technology partner with 45 offices across North America, serving small- to medium-sized organizations.” Source: RevenueBase Database · checked Sep 27, 2026
7	Canopy	Partial evidence	South Jordan, UT, United StatesHQ checked Sep 27, 2026	201-500	290 contacts →
	Partial evidence “Canopy is the all-in-one practice management platform built to help accounting firms simplify operations, delight clients, and drive firm-wide growth.” Source: RevenueBase Database · checked Sep 27, 2026
8	SWK Technologies, INC	Partial evidence	East Hanover, NJ, United StatesHQ checked Sep 27, 2026	201-500	217 contacts →
	Partial evidence “Imagine a future where your business effortlessly blends modern accounting and financial systems with streamlined operations layered over a secure and scalable IT infrastructure.” Source: RevenueBase Database · checked Sep 27, 2026
9	ADRA	Indirect evidence	Plano, TX, United StatesHQ checked Sep 27, 2026	501-1,000	216 contacts →
	Indirect evidence “Adra combined with Trintech in 2019.” Source: RevenueBase Database · checked Sep 27, 2026
10	Intuit Accountants	Partial evidence	Mountain View, CA, United StatesHQ checked Sep 27, 2026	10001+	186 contacts →
	Partial evidence “This page serves the accounting, bookkeeping, and tax professional community who are at the heart of everything we do at Intuit.” Source: RevenueBase Database · checked Sep 27, 2026
11	Platform Accounting Group	Partial evidence	Holladay, UT, United StatesHQ checked Sep 27, 2026	1,001-5,000	180 contacts →
	Partial evidence “Platform Accounting Group, est.” Source: RevenueBase Database · checked Sep 27, 2026
12	Symphona	Indirect evidence	Savannah, GA, United StatesHQ checked Sep 27, 2026	51-200	173 contacts →
	Indirect evidence “When every component of your business is working together in concert, those connections can create powerful and positive change.” Source: RevenueBase Database · checked Sep 27, 2026
13	Webgility	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 27, 2026	51-200	169 contacts →
	Indirect evidence “Every ecommerce founder making a decision today is basing it on a number that is roughly right.” Source: RevenueBase Database · checked Sep 27, 2026
14	SSI Consulting	Strong evidence	Vienna, VA, United StatesHQ checked Sep 27, 2026	201-500	165 contacts →
	Strong evidence “Since 1983 SSi Consulting has been helping our customers with accounting and ERP software selection, implementation, consulting, support, training and cloud services.” Source: RevenueBase Database · checked Sep 27, 2026
15	Finsmart Accounting	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	155 contacts →
	Partial evidence “Accounting Outsourcing to Drive Growth for Global CPA Firms & MNCs.” Source: RevenueBase Database · checked Sep 27, 2026
16	Smart ERP Solutions	Indirect evidence	Pleasanton, CA, United StatesHQ checked Sep 27, 2026	201-500	145 contacts →
	Indirect evidence “Our Mission Our mission is to provide innovative, configurable, flexible, cost-effective solutions to common business challenges, enabling our clients to save time, increase…” Source: RevenueBase Database · checked Sep 27, 2026
17	Safesend	Partial evidence	Ann Arbor, MI, United StatesHQ checked Sep 27, 2026	201-500	140 contacts →
	Partial evidence “SafeSend, part of Thomson Reuters, offers award-winning automation technology for tax and accounting firms to provide an unrivaled client experience.” Source: RevenueBase Database · checked Sep 27, 2026
18	Clubessential	Partial evidence	Blue Ash, OH, United StatesHQ checked Sep 27, 2026	51-200	136 contacts →
	Partial evidence “Clubessential provides a unified suite of accounting/Point-of-Sale, website, online reservations, and member marketing solutions, all developed within a single architecture, and…” Source: RevenueBase Database · checked Sep 27, 2026
19	Cloudit Automation & Accounting Services LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	201-500	130 contacts →
	Partial evidence “If you are running your own accounting and tax consulting practice, you must like this by all means.” Source: RevenueBase Database · checked Sep 27, 2026
20	Propio	Partial evidence	Seattle, WA, United StatesHQ checked Sep 27, 2026	n/a	130 contacts →
	Partial evidence “Propio is the all-in-one accounting platform that does the work.” Source: RevenueBase Database · checked Sep 27, 2026
21	QOUNT	Partial evidence	Plano, TX, United StatesHQ checked Sep 27, 2026	51-200	110 contacts →
	Partial evidence “Traditional practice management software helps firms organize work.” Source: RevenueBase Database · checked Sep 27, 2026
22	Computer Technology Resources, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 27, 2026	51-200	110 contacts →
	Partial evidence “CTR is a system integration company that provides technology solutions and support to all manner of businesses worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
23	Appseconnect	Indirect evidence	Frisco, TX, United StatesHQ checked Sep 27, 2026	51-200	105 contacts →
	Indirect evidence “At APPSeCONNECT, we do more than connect apps.” Source: RevenueBase Database · checked Sep 27, 2026
24	Agh, LLC	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	51-200	105 contacts →
	Partial evidence “AGH has merged with the nationally recognized accounting firm of Carr, Riggs & Ingram, LLC (CRI) and our office will now operate under the name of Carr, Riggs & Ingram.” Source: RevenueBase Database · checked Sep 27, 2026
25	Acuity Accounting	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	51-200	89 contacts →
	Partial evidence “Acuity is the modern-day accounting organization built specifically for startups and small businesses.” 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 software integration firms. 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 software integration firms.
Partial evidence: Its own public description names part of accounting software integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting software integration firms. 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 989 accounting software integration firms based in the United States

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Accounting software integration firms based in the United States at a glance

As of Sep 27, 2026

36.7%Verified-email coverage

11.4Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

680

11-50

229

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 989 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 software integration 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 the United States whose own description of what they do matches “accounting software integration 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 accounting software integration 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 accounting software integration firms, and records with no verified work email. Companies headquartered outside United States 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, 4,132 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 software integration firms by metro

Accounting software integration firms in New York35

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 software integration 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 accounting software integration firms are there based in the United States?

RevenueBase identified 989 accounting software integration firms headquartered in the 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?

Karbon, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most accounting software integration firms?

New York leads with 35 headquartered companies, followed by San Francisco (23) and Austin (21).

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 4,132 verified decision-maker contacts tracked across these 989 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.