Company lists · Data refreshed November 2026

Top 25 Oil and gas tax firms based in the United States

RevenueBase identified 6,098 company matches for oil and gas tax firms associated with the United States as of November 2026 and tracks 120,534 professional contacts across them, including 32,081 with verified work emails. New York is the largest hub.

This list covers company matches for oil and gas tax firms 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 4, 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 4, 2026 How this list was built
6,098Companies
120,534Contacts tracked
32,081Verified emails
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The 25 largest oil and gas tax firms based in the United States

Ranked by team size
Top 25 of 6,098 company matches for oil and gas tax firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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 matchKansas City, MO, United StatesHQ recorded Nov 4, 202610001+64,430 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
2Exact matchDallas, CT, United StatesHQ recorded Nov 4, 20265,001-10,0006,580 contacts →

Exact match

“Ryan, an award-winning global tax services and software provider, is the largest Firm in the world dedicated exclusively to business taxes.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
3Exact matchPittsford, DE, United StatesHQ recorded Nov 4, 20261,001-5,0001,153 contacts →

Exact match

“Founded in 1978 and led by active and engaged problem solvers, The Bonadio Group (TBG) brings a unique passion and approach to our work.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4Exact matchFort Wayne, OH, United StatesHQ recorded Nov 4, 2026501-1,000984 contacts →

Exact match

“Great Place to Work® Certified™ DMA, a proudly employee-owned company, has been solving corporate tax challenges for its clients since 1972.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5Exact matchAtlanta, GA, United StatesHQ recorded Nov 4, 2026501-1,000762 contacts →

Exact match

“Mauldin & Jenkins, LLC believes that by working together with our clients, we can accomplish anything!”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6Exact matchCanfield, NJ, United StatesHQ recorded Nov 4, 2026501-1,000676 contacts →

Exact match

“Established in 1949, HBK is a multidisciplinary financial services firm offering the collective intelligence of hundreds of professionals committed to delivering exceptional…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Nov 4, 2026501-1,000612 contacts →

Exact match

“Effective July 1, 2026, Anchin combined with Baker Tilly, a leading advisory, tax, and assurance firm with a national and global presence across major U.S.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8Exact matchSan Jose, CA, United StatesHQ recorded Nov 4, 2026501-1,000520 contacts →

Exact match

“Sensiba’s comprehensive accounting, tax, and consulting services help businesses and people solve problems, navigate complexity, and build a foundation for sustainable growth.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9Exact matchLos Angeles, CO, United StatesHQ recorded Nov 4, 2026201-500508 contacts →

Exact match

“SingerLewak has a 60-year history of serving clients as one of the leading West Coast based public accounting firms; SingerLewak understands the needs of business owners and…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10Exact matchAtlanta, GA, United StatesHQ recorded Nov 4, 2026501-1,000505 contacts →

Exact match

“Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11Exact matchParsippany, NJ, United StatesHQ recorded Nov 4, 2026201-500462 contacts →

Exact match

“SAX is a multi-disciplinary accounting, tax and advisory firm serving the needs of privately held companies, family-owned businesses, not-for-profit organizations and…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12Exact matchChicago, IL, United StatesHQ recorded Nov 4, 2026201-500431 contacts →

Exact match

“Knowcraft Analytics is engaged in providing valuation, advisory, accounting, and taxation services to US and Canada-based consulting and advisory firms.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13Exact matchPalo Alto, CA, United StatesHQ recorded Nov 4, 2026201-500427 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14Exact matchExton, GA, United StatesHQ recorded Nov 4, 2026501-1,000386 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15Exact matchSterling, VA, United StatesHQ recorded Nov 4, 2026201-500360 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16Exact matchOrem, UT, United StatesHQ recorded Nov 4, 2026201-500337 contacts →

Exact match

“Squire is a nationally recognized audit, tax, and business advisory firm serving clients across the U.S.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17Exact matchWayne, OH, United StatesHQ recorded Nov 4, 2026201-500294 contacts →

Exact match

“GTM is a leading provider of corporate tax services.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18Exact matchAtlanta, GA, United StatesHQ recorded Nov 4, 202651-200264 contacts →

Exact match

“Windham Brannon is a recognized leader in providing advisory, assurance and tax services to clients both nationally and globally.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Nov 4, 2026501-1,000251 contacts →

Exact match

“Growth exposes financial weakness.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20Exact matchArlington, TX, United StatesHQ recorded Nov 4, 202651-200242 contacts →

Exact match

“At Source Advisors, relationships matter.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
21Exact matchCincinnati, OH, United StatesHQ recorded Nov 4, 2026201-500241 contacts →

Exact match

“Barnes Dennig has earned a reputation for outstanding accounting, tax and advisory services – as illustrated by the number of national and local awards for innovation…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
22Exact matchAtlanta, GA, United StatesHQ recorded Nov 4, 2026n/a241 contacts →

Exact match

“Founded in 1990 in Atlanta, Georgia, Small Business Services is part of LedgerWay, a tax, accounting, and advisory firm built for small businesses and entrepreneurs who are…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
23Exact matchMiami, FL, United StatesHQ recorded Nov 4, 2026201-500238 contacts →

Exact match

“KSDT Advisors provides a full service line of professional services to include Tax, Advisory, Assurance, Accounting, Litigation, Wealth Management and more.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
24Exact matchDallas, TX, United StatesHQ recorded Nov 4, 2026201-500234 contacts →

Exact match

“In operation since 1978, KE Andrews is one of the largest state and local tax firms in the country, managing over $500 billion in assets.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
25Exact matchCampbell, CA, United StatesHQ recorded Nov 4, 202651-200225 contacts →

Exact match

“ASL works with emerging and middle market privately held businesses to help them thrive in their markets, and with high net worth individuals, such as owners, founders and…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase

Showing 25 of 6,098 oil and gas tax firms based in the United States

See the full list, filter by size, metro and specialty, and access 32,081 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas tax firms based in the United States at a glance

As of Nov 4, 2026
26.6%Verified-email coverage
19.8Average contacts per company
1-10Median size (employees)
2.8%Largest-city concentration · New York
Nov 4, 2026Page data refreshed

Companies by employee count

1-10
4,372
11-50
1,387
51-200
224
201-500
32
501-1,000
14
1,001-5,000
8
5,001-10,000
1
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 6,098 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 “oil and gas tax firms” 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 32,081 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 4, 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 “oil and gas tax firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas tax firms are there based in the United States?

RevenueBase identified 6,098 company matches for oil and gas tax firms 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?

H&r Block tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most oil and gas tax firms?

New York leads with 169 company records, followed by Houston (155) and Miami (90).

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 32,081 professional contacts with verified work emails tracked across these 6,098 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 4, 2026.

Ready to reach these companies? Verified emails and direct dials for all 6,098 oil and gas tax firms based in the United States. Start with a free account, no credit card.

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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.