Company lists · Data refreshed November 2026

Top 25 Tax software integration providers based in the United States

RevenueBase identified 275 company matches for tax software integration providers associated with the United States as of November 2026 and tracks 8,834 professional contacts across them, including 3,607 with verified work emails. New York is the largest hub.

This list covers company matches for tax software integration providers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 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 RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
275Companies
8,834Contacts tracked
3,607Verified emails
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The 25 largest tax software integration providers based in the United States

Ranked by team size
Top 25 of 275 company matches for tax software integration providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKing Of Prussia, PA, United StatesHQ recorded Nov 5, 20261,001-5,0002,636 contacts →

Exact match

“Vertex is the Decision-to-Defense™ global indirect tax and compliance company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Nov 5, 20261,001-5,0001,665 contacts →

Exact match

“Wolters Kluwer Tax & Accounting U.S.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchFranklin, United StatesHQ recorded Nov 5, 2026501-1,000579 contacts →

Exact match

“Drake Software, a private company founded in 1977, provides software solutions to over tax and accounting firms that file more than 40 million tax returns every year.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchDallas, TX, United StatesHQ recorded Nov 5, 202651-200385 contacts →

Exact match

“TaxAct helps everyday Americans get every tax advantage they deserve by finding credits and deductions they never even knew existed.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchLong Island City, NY, United StatesHQ recorded Nov 5, 2026201-500309 contacts →

Exact match

“TTI’s flagship product, Tax Series, is an all-inclusive SaaS solution that can handle all aspects of U.S.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchIrvine, CA, United StatesHQ recorded Nov 5, 2026501-1,000287 contacts →

Exact match

“SurePrep was founded in 2002 and is the leader in 1040 productivity for CPA firms.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, FL, United StatesHQ recorded Nov 5, 202651-200206 contacts →

Exact match

“Instead is where tax work gets done.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchFranklin, NC, United StatesHQ recorded Nov 5, 20261,001-5,000163 contacts →

Exact match

“Taxwell is a leading digital tax filing platform formed in 2022 from the combination of Drake Software® and TaxAct®.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLathrop, CA, United StatesHQ recorded Nov 5, 202651-200138 contacts →

Exact match

“CrossLink Professional Tax Solutions (CPTS) is a leading provider of professional tax software solutions for professional tax preparers across the United States.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchSan Francisco, United StatesHQ recorded Nov 5, 202651-200137 contacts →

Exact match

“Kintsugi is automating sales tax for every company globally.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-200111 contacts →

Exact match

“april partners with wealth management firms, banks, and SMB platforms to embed tax filing, planning, and insights directly into the financial platforms people use every day to…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchCollege Station, TX, United StatesHQ recorded Nov 5, 202611-50109 contacts →

Exact match

“Holistiplan, a tax planning software solution, helps financial planners be more comprehensive AND more efficient.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchAnn Arbor, MI, United StatesHQ recorded Nov 5, 2026201-500103 contacts →

Exact match

“SafeSend, part of Thomson Reuters, offers award-winning automation technology for tax and accounting firms to provide an unrivaled client experience.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchDelray Beach, FL, United StatesHQ recorded Nov 5, 202611-5079 contacts →

Exact match

“Sigma Tax Pro serves professional Tax Preparers, Accountants, and CPAs with industry-leading software solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchAlpharetta, GA, United StatesHQ recorded Nov 5, 202611-5057 contacts →

Exact match

“CereTax is the first tax automation solution built to take advantage of the countless technological advancements over the last decade and engineered in a way that truly transforms…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchGrand Forks, ND, United StatesHQ recorded Nov 5, 202651-20049 contacts →

Exact match

“Located in Grand Forks, ND, Aatrix Software, a Sovos Company has been developing innovative accounting software solutions since 1986.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchBirmingham, AL, United StatesHQ recorded Nov 5, 202611-5031 contacts →

Exact match

“Provide tax preparation and planning services to businesses and individuals.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202611-5027 contacts →

Exact match

“TokenTax is a crypto tax software platform and full-service crypto accounting firm for individual and institutional investors around the globe.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchSanta Ana, CA, United StatesHQ recorded Nov 5, 202651-20027 contacts →

Exact match

“To follow Asure Payroll Tax Management visit the Asure Software page.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchWest Des Moines, IA, United StatesHQ recorded Nov 5, 202611-5026 contacts →

Exact match

“The Back Office is a team of accounting, development, and administrative professionals that have been providing seamless accounting integration software and data conversion…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchOxnard, CA, United StatesHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“FileYourTaxes.com is a faster, convenient, contemporary, and hassle-free way to file taxes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchChicago, IL, United StatesHQ recorded Nov 5, 20261-1024 contacts →

Exact match

“Your accounting firm's Fractional AI Director to help you transform your accounting firm.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchBirmingham, AL, United StatesHQ recorded Nov 5, 202611-5021 contacts →

Exact match

“Who Are We?”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchReno, NV, United StatesHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“Thanks to our DIY intuitive tax software, US expat taxes couldn't be easier or faster.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchBoston, MA, United StatesHQ recorded Nov 5, 202651-20020 contacts →

Exact match

“TaxJar was founded in 2013 to help e-commerce companies automate the entire sales tax lifecycle from calculations and nexus tracking to reporting and filing.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 275 tax software integration providers based in the United States

See the full list, filter by size, metro and specialty, and access 3,607 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Tax software integration providers based in the United States at a glance

As of Nov 5, 2026
40.8%Verified-email coverage
32.1Average contacts per company
1-10Median size (employees)
5.8%Largest-city concentration · New York
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
150
11-50
84
51-200
22
201-500
7
501-1,000
4
1,001-5,000
4

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 275 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United States whose business descriptions match “tax software integration providers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,607 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “tax software integration providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tax software integration providers are there based in the United States?

RevenueBase identified 275 company matches for tax software integration providers associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Vertex INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most tax software integration providers?

New York leads with 16 company records, followed by Houston (8) and San Francisco (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,607 professional contacts with verified work emails tracked across these 275 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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 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.