Company lists · Data verified August 2026

Top 25 Corporate tax software companies based in the United States

Name: Corporate tax software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 205 companies tracked

There are 205 corporate tax software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 14,130 professional contacts across them, including 7,880 with verified work emails and 5,310 with mobile numbers. Houston is the largest hub.

This list covers corporate tax software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

205Companies

14,130Contacts tracked

7,880Verified emails

5,310Mobile numbers

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The 25 largest corporate tax software companies based in the United States

Ranked by team size

Top 25 of 205 corporate tax software companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	RYAN	Atlanta, GA	5,001-10,000	6,055	4,002
2	Vertex INC	Sarasota, FL	1,001-5,000	2,060	1,245
3	Wolters Kluwer TAX & Accounting US	New York, NY	1,001-5,000	1,592	709
4	DMA	Edina, MN	501-1,000	860	631
5	Drake Software	Franklin	501-1,000	560	174
6	Taxact	Dallas, TX	51-200	369	130
7	TAX Technologies, INC	Haworth, NJ	201-500	306	120
8	Taxslayer	Augusta, GA	201-500	288	151
9	Sureprep, Part Of Thomson Reuters	Irvine, CA	501-1,000	287	153
10	Taxwell	Franklin, NC	1,001-5,000	137	12
11	Crosslink Professional TAX Solutions	Lathrop, CA	51-200	136	69
12	Aumentum Technologies	Niagara Falls, NY	201-500	114	76
13	Holistiplan	College Station, TX	11-50	98	70
14	Sigma TAX PRO	Delray Beach, FL	11-50	72	17
15	Orbitax	San Francisco, CA	51-200	64	32
16	TAX Compliance, INC	San Diego, CA	51-200	62	16
17	Arvo Tech	Columbus, OH	11-50	54	28
18	Invoke TAX Partners	Dallas, TX	51-200	44	20
19	DLHC	Birmingham, AL	11-50	29	18
20	fileyourtaxes.com	Oxnard, CA	11-50	25	19
21	Cordiance	Santa Fe, NM	11-50	23	16
22	smartwiz.io	Birmingham, AL	11-50	22	8
23	neo.tax	Mountain View, CA	11-50	17	10
24	Expatfile	Reno, NV	11-50	17	10
25	Seemas	Santa Clara, CA	11-50	15	5

Showing 25 of 205 corporate tax software companies based in the United States

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Corporate tax software companies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

HoustonLargest hub · 7 HQs

5,310Contacts with mobile numbers

17Emails re-verified in last 30 days

Companies by employee count

1-10

100

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Corporate tax software companies by metro

Metro	Companies
Corporate tax software companies in Houston	7
Corporate tax software companies in New York	7
Corporate tax software companies in Chicago	4
Corporate tax software companies in Columbus	4
Corporate tax software companies in Arlington	4
Corporate tax software companies in Dallas	4
Corporate tax software companies in Birmingham	3
Corporate tax software companies in St Louis	3

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “corporate tax software companies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 17 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many corporate tax software companies are there based in the United States?

There are 205 corporate tax software companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

RYAN, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most corporate tax software companies?

Houston leads with 7 headquartered companies, followed by New York (7) and Chicago (4).

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 7,880 verified decision-maker contacts tracked across these 205 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.