Company lists · Data refreshed November 2026

Top 25 Oil and gas tax consultants worldwide

Name: Oil and gas tax consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 4, 2026 20,858 companies tracked

RevenueBase identified 20,858 company matches for oil and gas tax consultants worldwide as of November 2026 and tracks 235,607 professional contacts across them, including 61,082 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for oil and gas tax consultants 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 November 4, 2026. Country and city lists for oil and gas tax consultants 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 Nov 4, 2026 How this list was built

20,858Companies

235,607Contacts tracked

61,082Verified emails

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The 25 largest oil and gas tax consultants worldwide

Ranked by team size

Top 25 of 20,858 company matches for oil and gas tax consultants worldwide, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	H&r Block	Exact match	Kansas City, MO, United StatesHQ recorded Nov 4, 2026	10001+	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
2	RYAN	Exact match	Dallas, CT, United StatesHQ recorded Nov 4, 2026	5,001-10,000	6,580 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
3	PWC Sweden	Exact match	Stockholm, SwedenHQ recorded Nov 4, 2026	1,001-5,000	2,312 contacts →
	Exact match “På PwC hjälper vi våra kunder att bygga förtroende och ställa om sin verksamhet för att öka konkurrenskraften.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4	TAX Consultant	Exact match	Brighton, United KingdomHQ recorded Nov 4, 2026	n/a	2,211 contacts →
	Exact match “A traditional general practice, with a twist.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5	BDO Germany	Exact match	Hamburg, GermanyHQ recorded Nov 4, 2026	1,001-5,000	1,665 contacts →
	Exact match “BDO is the leading entrepreneurial driven provider for audit and audit-related services, tax and business law consulting as well as advisory services.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6	RSM Ebner Stolz	Exact match	Stuttgart, GermanyHQ recorded Nov 4, 2026	1,001-5,000	1,599 contacts →
	Exact match “Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7	WTS Deutschland	Exact match	Munich, GermanyHQ recorded Nov 4, 2026	1,001-5,000	905 contacts →
	Exact match “WTS ist ein globaler Full-Service Anbieter für Steuerberatungsleistungen und Financial & Deal Advisory.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8	WIPRO	Exact match	Valencia, SpainHQ recorded Nov 4, 2026	n/a	832 contacts →
	Exact match “En Wipro impulsamos el progreso.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9	PWC Hungary	Exact match	Budapest, HungaryHQ recorded Nov 4, 2026	501-1,000	780 contacts →
	Exact match “A PwC Magyarország közel három évtizede nyújt ügyfeleinek nemzetközi színvonalú szolgáltatást könyvvizsgálat, adótanácsadás és üzleti tanácsadás területeken.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10	Mauldin & Jenkins	Exact match	Atlanta, GA, United StatesHQ recorded Nov 4, 2026	501-1,000	762 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
11	Blick Rothenberg	Exact match	Covent Garden, United KingdomHQ recorded Nov 4, 2026	501-1,000	742 contacts →
	Exact match “Blick Rothenberg is a leading tax, accounting and business advisory firm founded on personal integrity and technical expertise.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12	Chevez	Exact match	Mexico City, MexicoHQ recorded Nov 4, 2026	501-1,000	740 contacts →
	Exact match “Chevez Ruiz Zamarripa, es una firma especializada en la Asesoría y Consultoría Fiscal de alto nivel, que se distingue por prestar servicios personalizados con total…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13	KBR Granherne	Exact match	Leatherhead, United KingdomHQ recorded Nov 4, 2026	501-1,000	717 contacts →
	Exact match “KBR Consulting is one of the world's foremost engineering consultancies specializing in the hydrocarbon and energy industry.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14	KUMAR	Exact match	n/a	1,001-5,000	638 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15	Citrin Cooperman India LLP	Exact match	Ahmedabad, IndiaHQ recorded Nov 4, 2026	201-500	637 contacts →
	Exact match “Citrin Cooperman (citrincooperman.com) is among the leading, nationally recognized professional services firms currently ranked in the top 25 firms in the United States by…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16	Grassi	Exact match	Jericho, NJ, PalestineHQ recorded Nov 4, 2026	501-1,000	634 contacts →
	Exact match “Founded in 1980 with just a desk and an empty filing cabinet, Grassi has grown into a leading independent, employee-owned advisory, tax, and accounting firm serving middle-market…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17	BDO Israel	Exact match	Tel Aviv, IsraelHQ recorded Nov 4, 2026	1,001-5,000	600 contacts →
	Exact match “BDO Israel is a dynamic and business oriented accounting and consulting firm, ranking amongst the five leading industry firms in Israel and part of the international network BDO.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18	Lisicki Litvin & Asociados	Exact match	Buenos Aires, ArgentinaHQ recorded Nov 4, 2026	501-1,000	587 contacts →
	Exact match “Somos una firma de profesionales altamente especializados y comprometidos con las necesidades de nuestros clientes.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19	SBB Accountants & Advisors	Exact match	Leuven, BelgiumHQ recorded Nov 4, 2026	501-1,000	560 contacts →
	Exact match “Welcome to SBB, a firm of experienced accountants and tax consultants with 30 branches in Belgium.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20	BDO Ireland	Exact match	Dublin, IrelandHQ recorded Nov 4, 2026	201-500	551 contacts →
	Exact match “BDO Ireland LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
21	Sensiba LLP	Exact match	San Jose, CA, United StatesHQ recorded Nov 4, 2026	501-1,000	520 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
22	Brown Edwards	Exact match	Roanoke, VA, United StatesHQ recorded Nov 4, 2026	201-500	517 contacts →
	Exact match “Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
23	Singerlewak LLP	Exact match	Los Angeles, CO, United StatesHQ recorded Nov 4, 2026	201-500	508 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
24	Smith Howard	Exact match	Atlanta, GA, United StatesHQ recorded Nov 4, 2026	501-1,000	505 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
25	DHPG	Exact match	Bonn, GermanyHQ recorded Nov 4, 2026	1,001-5,000	497 contacts →
	Exact match “As an interdisciplinary medium-sized tax audit, accountancy and legal advice service we guarantee all-round high-quality consultation combined with a personal component.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “oil and gas tax consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 20,858 oil and gas tax consultants worldwide

See the full list, filter by size, metro and specialty, and access 61,082 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas tax consultants worldwide at a glance

As of Nov 4, 2026

25.9%Verified-email coverage

11.3Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Sao Paulo

Nov 4, 2026Page data refreshed

Companies by employee count

1-10

12,193

11-50

6,655

51-200

1,185

201-500

155

501-1,000

1,001-5,000

5,001-10,000

10001+

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 consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “oil and gas tax consultants” 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 61,082 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.

Oil and gas tax consultants by location

95 lists · largest first

Every Oil and gas tax consultants 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 consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas tax consultants are there worldwide?

RevenueBase identified 20,858 company matches for oil and gas tax consultants worldwide 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 country has the most oil and gas tax consultants?

The United States leads with 4,240 companies, followed by Germany (3,882) and Brazil (1,781). Every oil and gas tax consultants list by country and city is linked on this page.

Which city has the most oil and gas tax consultants?

Sao Paulo leads with 382 company records, followed by Berlin (210) and Houston (168).

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 61,082 professional contacts with verified work emails tracked across these 20,858 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.

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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.