Company lists · Data refreshed November 2026

Top 25 Tax software integration platforms based in the United States

RevenueBase identified 191 company matches for tax software integration platforms associated with the United States as of November 2026 and tracks 8,534 professional contacts across them, including 3,795 with verified work emails. San Francisco is the largest hub.

This list covers company matches for tax software integration platforms 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
191Companies
8,534Contacts tracked
3,795Verified emails
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The 25 largest tax software integration platforms based in the United States

Ranked by team size
Top 25 of 191 company matches for tax software integration platforms 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 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
5Exact 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
6Exact 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
7Exact 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
8Exact 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
9Exact 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
10Exact 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
11Exact 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
12Exact 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
13Exact matchScottsdale, AZ, United StatesHQ recorded Nov 5, 202651-20098 contacts →

Exact match

“Symmetry is the leading payroll tax compliance infrastructure for payroll providers, HR tech platforms and large employers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchMorristown, NJ, United StatesHQ recorded Nov 5, 202651-20093 contacts →

Exact match

“K1x is the purpose-built tax data platform that automates and validates Schedule K-1 data for accounting firms, institutional investors, family offices, funds, and tax-exempt…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCoconut Grove, FL, United StatesHQ recorded Nov 5, 202651-20087 contacts →

Exact match

“Tickmark’s flagship application, Taxfyle, was launched in 2015 as the “easiest way to file your taxes”.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202651-20086 contacts →

Exact match

“Fondo is the accounting platform for high growth companies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchFranklin, TN, United StatesHQ recorded Nov 5, 202651-20085 contacts →

Exact match

“HubSync is an AI-powered, end-to-end tax and accounting workflow platform built exclusively for CPA firms.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202651-20068 contacts →

Exact match

“Orbitax empowers tax professionals with intelligent, AI-driven solutions that unify processes, simplify compliance, and empower meaningful collaboration.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact 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
20Exact matchChandler, AZ, United StatesHQ recorded Nov 5, 202651-20053 contacts →

Exact match

“Soraban is the intelligent tax workflow system built for accounting firms, integrated with your stack, and designed to eliminate manual work across intake, prep, and delivery.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchHampton, NH, United StatesHQ recorded Nov 5, 202651-20047 contacts →

Exact match

“GruntWorx helps accounting firms prepare tax returns faster by automating the most time-consuming parts of the tax preparation process.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202611-5033 contacts →

Exact match

“Lettuce is an automated tax and accounting product for solopreneurs, contractors and freelancers designed to help them unlock the value inside their businesses.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact 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
24Exact 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
25Exact matchSan Jose, TX, United StatesHQ recorded Nov 5, 202611-5022 contacts →

Exact match

“We implement tax engines and build tools to make it easier to manage your tax engine.”

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

Showing 25 of 191 tax software integration platforms based in the United States

See the full list, filter by size, metro and specialty, and access 3,795 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Nov 5, 2026
44.5%Verified-email coverage
44.7Average contacts per company
11-50Median size (employees)
7.9%Largest-city concentration · San Francisco
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
93
11-50
64
51-200
22
201-500
5
501-1,000
2
1,001-5,000
4
10001+
1

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 191 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 platforms” 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 3,795 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 platforms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 191 company matches for tax software integration platforms 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 platforms?

San Francisco leads with 15 company records, followed by New York (13) and Chicago (7).

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 3,795 professional contacts with verified work emails tracked across these 191 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.