Company lists · Data refreshed September 2026

Top 25 Tax compliance service companies based in the United States

RevenueBase identified 3,285 tax compliance service companies headquartered in the United States as of September 2026 and tracks 82,671 professional contacts across them, including 11,117 with verified work emails. Houston is the largest hub.

This list covers tax compliance service 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 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 22, 2026 86% judged on-target in blind review
3,285Companies
82,671Contacts tracked
11,117Verified emails
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The 25 largest tax compliance service companies based in the United States

Ranked by team size
Top 25 of 3,285 tax compliance service companies based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to tax compliance service companies: 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 evidenceKansas City, MO, United StatesHQ checked Sep 22, 202610001+59,451 contacts →

Indirect evidence

“H&R Block’s purpose is simple: To provide help and inspire confidence in our clients and communities everywhere.”

Source: RevenueBase Database · checked Sep 22, 2026
2Partial evidencePalo Alto, CA, United StatesHQ checked Sep 22, 2026201-500399 contacts →

Partial evidence

“Originating from the English and Latin roots of “apercu,” an act of insight, and “census,” an applied study of wealth and property, Apercen is a tax consulting firm offering high…”

Source: RevenueBase Database · checked Sep 22, 2026
3Indirect evidenceExton, PA, United StatesHQ checked Sep 22, 2026501-1,000364 contacts →

Indirect evidence

“Cohesive is a leading solutions provider and systems integrator for IBM Maximo.”

Source: RevenueBase Database · checked Sep 22, 2026
4Partial evidenceSterling, VA, United StatesHQ checked Sep 22, 2026201-500347 contacts →

Partial evidence

“Advantage One Tax Consulting is a multi-disciplinary group of highly experienced tax professionals who understand the tax practice in its true spirit, examine the issues it faces…”

Source: RevenueBase Database · checked Sep 22, 2026
5Indirect evidenceHouston, TX, United StatesHQ checked Sep 22, 2026501-1,000269 contacts →

Indirect evidence

“Growth exposes financial weakness.”

Source: RevenueBase Database · checked Sep 22, 2026
6Strong evidenceFayetteville, AR, United StatesHQ checked Sep 22, 202651-200206 contacts →

Strong evidence

“Zenwork, through its Tax1099 and Compliancely brands, is a fast-growing digital tax compliance and regulatory reporting technology company, with 10+ years of experience powering…”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 202651-200146 contacts →

Indirect evidence

“Founded in 1947, Funaro & Co.”

Source: RevenueBase Database · checked Sep 22, 2026
8Partial evidenceSan Francisco, United StatesHQ checked Sep 22, 202651-200105 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
9Partial evidencePlano, TX, United StatesHQ checked Sep 22, 202651-200100 contacts →

Partial evidence

“At MyTaxFiler, we offer more than just tax preparation-we provide peace of mind.”

Source: RevenueBase Database · checked Sep 22, 2026
10Partial evidenceChicago, IL, United StatesHQ checked Sep 22, 2026501-1,00094 contacts →

Partial evidence

“Archer Lewis is your local trusted advisor for accounting and tax services.”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceCypress, CA, United StatesHQ checked Sep 22, 202651-20091 contacts →

Indirect evidence

“Our mission is to provide our clients with the best in professional services, with an authentic personal approach.”

Source: RevenueBase Database · checked Sep 22, 2026
12Partial evidenceUnited StatesHQ checked Sep 22, 202651-20085 contacts →

Partial evidence

“Crescent Tax Filing, Inc- Your Trusted Partner in US #Tax Services for Over 7 Years Welcome to Crescent Tax Filing, Inc, your go-to destination for comprehensive US Tax…”

Source: RevenueBase Database · checked Sep 22, 2026
13Partial evidenceValley Stream, NY, United StatesHQ checked Sep 22, 202651-20078 contacts →

Partial evidence

Tax Consulting Services Individual Tax Return Preparation * Electronic Filing * Refund Anticipation Loans * Same Day Refund Anticipation Loans * Refund Anticipation Checks * State…”

Source: RevenueBase Database · checked Sep 22, 2026
14Partial evidenceHouston, TX, United StatesHQ checked Sep 22, 202611-5077 contacts →

Partial evidence

“Colbert/Ball Tax Service understands that whenever a customer visits their location for service, the client will be immediately assisted by a trained professional.”

Source: RevenueBase Database · checked Sep 22, 2026
15Strong evidenceNew York, NY, United StatesHQ checked Sep 22, 202611-5074 contacts →

Strong evidence

“Zamp provides real sales tax relief, not just software-we completely handle your sales tax compliance so you don't have to.”

Source: RevenueBase Database · checked Sep 22, 2026
16Strong evidenceSunrise, FL, United StatesHQ checked Sep 22, 202651-20070 contacts →

Strong evidence

“Neil Jesani Tax Advisors, Inc.(NJA) provides a full suite of tax, compliance, accounting, resolution and advisory services, drawing on extensive industry knowledge to serve high…”

Source: RevenueBase Database · checked Sep 22, 2026
17Partial evidenceSt George, UT, United StatesHQ checked Sep 22, 202651-20064 contacts →

Partial evidence

“As the area’s largest full-service CPA firm, we are uniquely qualified to handle the most challenging tax issues as well as prepare simple returns in a cost-effective manner.”

Source: RevenueBase Database · checked Sep 22, 2026
18Partial evidenceDenver, CO, United StatesHQ checked Sep 22, 202651-20061 contacts →

Partial evidence

“Navigating the labyrinth of sales tax is more than just an annoyance for e-commerce, SaaS, and other online sellers.”

Source: RevenueBase Database · checked Sep 22, 2026
19Partial evidenceSan Jose, CA, United StatesHQ checked Sep 22, 202611-5058 contacts →

Partial evidence

“The partners and staff at Wheeler Accountants (WCPA - formerly LMGW) combine to offer a full range of audit, accounting, taxation, consulting and compliance services for our…”

Source: RevenueBase Database · checked Sep 22, 2026
20Partial evidenceWashington, DC, United StatesHQ checked Sep 22, 202651-20054 contacts →

Partial evidence

“Think, LLP is a national professional tax services firm that consists of former Big-4 partners from the national tax practices, attorneys, CPAs, engineers, former IRS technicians…”

Source: RevenueBase Database · checked Sep 22, 2026
21Indirect evidenceBoca Raton, FL, United StatesHQ checked Sep 22, 202651-20054 contacts →

Indirect evidence

“LerroSarbey, PLLC, a full-service accounting firm located in Boca Raton and Fort Lauderdale, Florida.”

Source: RevenueBase Database · checked Sep 22, 2026
22Partial evidenceKnoxville, TN, United StatesHQ checked Sep 22, 202651-20048 contacts →

Partial evidence

“At The Accounting Lab, we are dedicated to helping individuals and businesses optimize their financial success through effective tax minimization strategies.”

Source: RevenueBase Database · checked Sep 22, 2026
23Partial evidenceAnnapolis, MD, United StatesHQ checked Sep 22, 202651-20045 contacts →

Partial evidence

“Strategic Tax Planning is a premier tax and financial consulting firm in Annapolis, Maryland, serving as a trusted partner for individuals, businesses, and entrepreneurs.”

Source: RevenueBase Database · checked Sep 22, 2026
24Indirect evidenceKaty, TX, United StatesHQ checked Sep 22, 20261,001-5,00042 contacts →

Indirect evidence

“RightTaxMate is trusted partner for individual and businesses seeking expert financial guidance and support.”

Source: RevenueBase Database · checked Sep 22, 2026
25Indirect evidenceRaleigh, NC, United StatesHQ checked Sep 22, 202611-5040 contacts →

Indirect evidence

“At Stancil, we understand that every client is unique.”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 25 of 3,285 tax compliance service companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 11,117 reachable decision-makers.

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Tax compliance service companies based in the United States at a glance

As of Sep 22, 2026
13.4%Verified-email coverage
25.2Average contacts per company
1-10Median size (employees)
2.5%Largest-city concentration · Houston
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
2,574
11-50
559
51-200
92
201-500
12
501-1,000
4
1,001-5,000
2
5,001-10,000
2
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 3,285 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 tax compliance service companies, 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 “tax compliance service companies”. 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 tax compliance service companies), 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 tax compliance service companies, 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, 11,117 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 22, 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.

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 tax compliance service companies, 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 tax compliance service companies are there based in the United States?

RevenueBase identified 3,285 tax compliance service companies 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?

H&r Block, headquartered in Kansas City, tops this list with the largest team on record.

Which city has the most tax compliance service companies?

Houston leads with 81 headquartered companies, followed by New York (80) and Miami (50).

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 11,117 verified decision-maker contacts tracked across these 3,285 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 22, 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.