Company lists · Data refreshed September 2026

Top 13 Top accounting firms based in Japan

RevenueBase identified 51 company matches for top accounting firms associated with Japan as of September 2026 and tracks 486,595 professional contacts across them, including 190,665 with verified work emails. Jing is the largest hub.

This list covers company matches for top accounting firms associated with Japan, 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 21, 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 Sep 21, 2026 How this list was built
51Companies
486,595Contacts tracked
190,665Verified emails
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The 13 largest top accounting firms based in Japan

Ranked by team size
Top 13 of 51 company matches for top accounting firms based in Japan, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 match千代田区, JapanHQ recorded Sep 21, 202610001+3,432 contacts →

Exact match

“The PwC Japan Group is a collective name for the member firms of the PwC global network in Japan and their affiliates.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact match千代田区, JapanHQ recorded Sep 21, 20265,001-10,0001,419 contacts →

Exact match

“KPMGKPMG310 KPMG KPMG KPMG KPMG KPMG FAS KPMG Forensic & Risk Advisory KPMG KPMG KPMG KPMG Ignition Tokyo KPMG”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchJapanHQ recorded Sep 21, 20265,001-10,000458 contacts →

Exact match

“EY JapanEY EY EY EY EY”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact match港区, JapanHQ recorded Sep 21, 2026201-500149 contacts →

Exact match

“Forvis Mazars Group SC is an independent member of Forvis Mazars Global, a leading global professional services network.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact match千代田区, JapanHQ recorded Sep 21, 202651-20070 contacts →

Exact match

“KPMG Ignition Tokyo is the centerpiece of KPMG Japan firm’s digital strategy, merging our professional insights in audit, tax and advisory with the knowledge of our digital…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact match千代田区, JapanHQ recorded Sep 21, 20265,001-10,00057 contacts →

Exact match

“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact match港区, JapanHQ recorded Sep 21, 20261-1017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact match千代田区, JapanHQ recorded Sep 21, 2026501-1,00010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchJapanHQ recorded Sep 21, 2026201-5005 contacts →

Exact match

“Mazars is an internationally integrated partnership, specialising in audit, accountancy, advisory, tax and legal services*.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact match千代田区, JapanHQ recorded Sep 21, 20261-104 contacts →

Exact match

“PE CxO IPO”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact match千代田区, JapanHQ recorded Sep 21, 202611-501 contacts →

Exact match

“is a management consulting company based out of, Japan.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact match中央区, JapanHQ recorded Sep 21, 20261-101 contacts →

Exact match

“M&a 100% 80%”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact match渋谷区, JapanHQ recorded Sep 21, 20261-101 contacts →

Exact match

“Transformation CPA Advisory Firmxcpa LLC”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 13 of 51 top accounting firms based in Japan

See the full list, filter by size, metro and specialty, and access 190,665 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Top accounting firms based in Japan at a glance

As of Sep 21, 2026
39.2%Verified-email coverage
9541.1Average contacts per company
51-200Median size (employees)
25.5%Largest-city concentration · Jing
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
11
51-200
12
201-500
6
501-1,000
1
1,001-5,000
3
5,001-10,000
3
10001+
2

Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 51 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 Japan whose business descriptions match “top 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. 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 190,665 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 21, 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 “top accounting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many top accounting firms are there based in Japan?

RevenueBase identified 51 company matches for top accounting firms associated with Japan 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?

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

Which city has the most top accounting firms?

Jing leads with 13 company records, followed by Tokyo (4) and Chiyoda-Ku (1).

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 190,665 professional contacts with verified work emails tracked across these 51 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 21, 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.