Company lists · Data refreshed September 2026

Top 25 Oil and gas tax accounting firms worldwide

RevenueBase identified 4,484 company matches for oil and gas tax accounting firms worldwide as of September 2026 and tracks 21,713 professional contacts across them, including 4,687 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for oil and gas tax accounting firms worldwide, 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 September 29, 2026. Country and city lists for oil and gas tax accounting firms follow the table.

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 Sep 29, 2026 How this list was built
4,484Companies
21,713Contacts tracked
4,687Verified emails
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The 25 largest oil and gas tax accounting firms worldwide

Ranked by team size
Top 25 of 4,484 company matches for oil and gas tax accounting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchExton, PA, United StatesHQ recorded Sep 29, 2026501-1,000364 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Sep 29, 2026501-1,000269 contacts →

Exact match

“Growth exposes financial weakness.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchSarasota, FL, United StatesHQ recorded Sep 29, 202651-200152 contacts →

Exact match

“You need an accounting professional with the benefits of a reputable and resourceful firm.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchNewport, United KingdomHQ recorded Sep 29, 202651-200134 contacts →

Exact match

“Award winning accountants & tax advisors based in Newport, South Wales.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchJoaçaba, BrazilHQ recorded Sep 29, 2026201-500119 contacts →

Exact match

“A Contassesc se destaca por fornecer serviços contábeis especializados, incluindo assessoria, consultoria e planejamento tributário.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchTyler, TX, United StatesHQ recorded Sep 29, 202651-200115 contacts →

Exact match

“For over 90 years, Henry & Peters has provided comprehensive accounting services with a depth of experience in Oil & Gas, Healthcare, Engineering, Construction, Small Business…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchKuala Lumpur, MalaysiaHQ recorded Sep 29, 2026501-1,00096 contacts →

Exact match

“Sabah International Petroleum Sdn Bhd”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchChicago, IL, United StatesHQ recorded Sep 29, 2026501-1,00094 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchOttawa, ON, CanadaHQ recorded Sep 29, 202651-20094 contacts →

Exact match

“GGFL is the tax planning and accounting firm for Ottawa’s successful business people.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchSan Angelo, TX, United StatesHQ recorded Sep 29, 202651-20091 contacts →

Exact match

“For more than 60 years, Armstrong, Backus & Co.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-20081 contacts →

Exact match

“Accounting, auditing and tax services to public companies, non-public companies and their owners, not-for-profits and employee benefit plans”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchBratislava, SlovakiaHQ recorded Sep 29, 202651-20077 contacts →

Exact match

“TPA is one of the Slovakia’s leading companies of accounting, tax advisory, payroll and auditing.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchTinton Falls, NJ, United StatesHQ recorded Sep 29, 202651-20073 contacts →

Exact match

“For almost 40 years, Cg Tax, Audit & Advisory (“Cg”) has helped clients stay focused on the road ahead™ by maximizing savings, increasing profitability and achieving financial…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchKöln, GermanyHQ recorded Sep 29, 202651-20068 contacts →

Exact match

“Unsere Steuerberater in Köln, Düsseldorf, Frankfurt, Bonn und Dubai haben sich besonders auf die Steuerberatung von Kapitalgesellschaften und Personengesellschaften spezialisiert.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchSan Antonio, TX, United StatesHQ recorded Sep 29, 202651-20067 contacts →

Exact match

“We’re Your Partner in Energy Asset Management, from Advising to Outsourcing.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchOklahoma City, OK, United StatesHQ recorded Sep 29, 202651-20066 contacts →

Exact match

“Martindale Consultants was founded in 1982 to deliver specialized audit, accounting, and regulatory compliance services to the oil and gas industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchSão Paulo, BrazilHQ recorded Sep 29, 202611-5058 contacts →

Exact match

“Nossa missão é aumentar o lucro de nossos clientes.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchTraverse City, MI, United StatesHQ recorded Sep 29, 202651-20057 contacts →

Exact match

“Our Clients' Success is Our Business Dennis, Gartland & Niergarth is northern Michigan’s largest locally owned, full service public accounting firm.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchWashington, DC, United StatesHQ recorded Sep 29, 202651-20054 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchBoca Raton, FL, United StatesHQ recorded Sep 29, 202651-20054 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchVitória, BrazilHQ recorded Sep 29, 202651-20048 contacts →

Exact match

“Nós da RCP Contabilidade prestamos assessoria através de uma equipe treinada e qualificada nas áreas contábil, fiscal, pessoal, imposto de renda, auditoria, societária e…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchKnoxville, TN, United StatesHQ recorded Sep 29, 202651-20048 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchNorthville, MI, United StatesHQ recorded Sep 29, 202611-5048 contacts →

Exact match

“Our services encompass nearly every aspect of your small business.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchLudwigshafen, GermanyHQ recorded Sep 29, 202611-5042 contacts →

Exact match

“Individuelle Steuerplanung und -beratung direkt vom Steuerberater: Unsere Steuerberater kümmern sich persönlich um Ihre Anliegen und erstellen Ihre Buchführung, Ihren…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchKaty, TX, United StatesHQ recorded Sep 29, 20261,001-5,00042 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 4,484 oil and gas tax accounting firms worldwide

See the full list, filter by size, metro and specialty, and access 4,687 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas tax accounting firms worldwide at a glance

As of Sep 29, 2026
21.6%Verified-email coverage
4.8Average contacts per company
1-10Median size (employees)
1.0%Largest-city concentration · Houston
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
3,292
11-50
961
51-200
143
201-500
14
501-1,000
7
1,001-5,000
3
5,001-10,000
1
10001+
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for oil and gas tax accounting firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “oil and gas tax accounting 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. 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 4,687 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 September 29, 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.

Oil and gas tax accounting firms by location

14 lists · largest first

Every Oil and gas tax accounting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 accounting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas tax accounting firms are there worldwide?

RevenueBase identified 4,484 company matches for oil and gas tax accounting firms worldwide as of September 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?

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

Which country has the most oil and gas tax accounting firms?

The United States leads with 1,978 companies, followed by Germany (440) and Brazil (262). Every oil and gas tax accounting firms list by country and city is linked on this page.

Which city has the most oil and gas tax accounting firms?

Houston leads with 47 company records, followed by New York (47) and Sao Paulo (40).

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 4,687 professional contacts with verified work emails tracked across these 4,484 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 September 29, 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.