Company lists · Data refreshed September 2026

Top 12 International tax consulting firms based in Russia

RevenueBase identified 47 international tax consulting firms headquartered in Russia as of September 2026 and tracks 578 professional contacts across them, including 90 with verified work emails. Moscow is the largest hub.

This list covers international tax consulting firms headquartered in Russia, 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 28, 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 28, 2026 86% judged on-target in blind review
47Companies
578Contacts tracked
90Verified emails
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The 12 largest international tax consulting firms based in Russia

Ranked by team size
Top 12 of 47 international tax consulting firms based in Russia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to international tax consulting firms: 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
1Partial evidenceMoscow, RussiaHQ checked Sep 28, 2026201-50080 contacts →

Partial evidence

“Marillion is a leading audit, tax and advisory firm, aspiring to build the economic foundations of a fair and prosperous world.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceMoscow, RussiaHQ checked Sep 28, 2026201-50050 contacts →

Partial evidence

“Konsu is a leading consulting and professional services firm operating across the CIS and the Middle East.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceMoscow, RussiaHQ checked Sep 28, 202651-20047 contacts →

Partial evidence

“ALTHAUS is a leading Russian advisory firm with a team of 150+ professionals in finance, tax, law, valuation, and engineering.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceMoscow, RussiaHQ checked Sep 28, 202651-20030 contacts →

Indirect evidence

“2020 = 25+ YEARS = INTERPONT = RUSSIA + UKRAINE + KAZAKHSTAN + GERMANY + CZECH REPUBLIC + CHINA Moscow - St.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceMoscow, RussiaHQ checked Sep 28, 20261,001-5,00028 contacts →

Partial evidence

“DELOVOY PROFIL Group offers consultations on legal, tax, audit, financial and investment matters, as well as valuation, accounting and taxation, strategic planning and marketing…”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceMoscow, RussiaHQ checked Sep 28, 202611-5014 contacts →

Indirect evidence

“Company formation provider.”

Source: RevenueBase Database · checked Sep 28, 2026
7Strong evidenceMoscow, RussiaHQ checked Sep 28, 202611-509 contacts →

Strong evidence

“Rufil Russia Consulting is an international One-Stop-Service Agency in Moscow!”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceRussiaHQ checked Sep 28, 202611-509 contacts →

Indirect evidence

“FTL Advisers is one of the leading Russian law firms established in 2008.”

Source: RevenueBase Database · checked Sep 28, 2026
9Strong evidenceMoscow, RussiaHQ checked Sep 28, 202651-2006 contacts →

Strong evidence

“RosCo – Consulting and audit» («RosCo»)- Group of companies, providing a wide range of services in the field of audit, evaluation, tax and legal consulting, accounting services…”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceMoscow, RussiaHQ checked Sep 28, 202611-505 contacts →

Indirect evidence

“Компания "Бельфор" оказывает консалтинговые услуги широкого профиля в сфере права, налогообложения, финансов, бухгалтерских услуг и услуг по управлению частным капиталом.”

Source: RevenueBase Database · checked Sep 28, 2026
11Strong evidenceMoscow, RussiaHQ checked Sep 28, 202611-501 contacts →

Strong evidence

“INVENTA Consulting, a team of qualified specialists in the field of finance, taxes and law with a wide experience in leading international and Russian consulting companies Our…”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceVoronezh, RussiaHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“Accounting and Financial accounting- Declaration and optimization of taxes and VAT- Tax avoidance (legally)- Business and Management Consultancy- Organize registration companies-…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 12 of 47 international tax consulting firms based in Russia

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International tax consulting firms based in Russia at a glance

As of Sep 28, 2026
15.6%Verified-email coverage
12.3Average contacts per company
11-50Median size (employees)
29.8%Largest-city concentration · Moscow
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
9
11-50
22
51-200
12
201-500
3
1,001-5,000
1

Email recency for this list is measured worldwide rather than for Russia, so it is reported there. Company counts and contact totals on this page are exact for Russia, over 47 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 international tax consulting firms, 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 Russia whose own description of what they do matches “international tax consulting firms”. 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 international tax consulting firms), 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 international tax consulting firms, and records with no verified work email. Companies headquartered outside Russia 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, 90 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 28, 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 international tax consulting firms, 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 international tax consulting firms are there based in Russia?

RevenueBase identified 47 international tax consulting firms headquartered in Russia 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?

Marillion, headquartered in Moscow, tops this list with the largest team on record.

Which city has the most international tax consulting firms?

Moscow leads with 14 headquartered companies, followed by Moskva (9) and City (2).

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 90 verified decision-maker contacts tracked across these 47 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 28, 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.