Company lists · Data refreshed September 2026

Top 25 Accounting advisory services based in Irvine, United States

Name: Accounting advisory services based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 45 companies tracked

RevenueBase identified 45 accounting advisory services headquartered in Irvine, United States as of September 2026 and tracks 1,208 professional contacts across them, including 536 with verified work emails. New York is the largest hub.

This list covers accounting advisory services headquartered in Irvine, United States, 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 21, 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 21, 2026 86% judged on-target in blind review

45Companies

1,208Contacts tracked

536Verified emails

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The 25 largest accounting advisory services based in Irvine, United States

Ranked by team size

Top 25 of 45 accounting advisory services based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to accounting advisory services: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Lsl, LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	178 contacts →
	Indirect evidence “LSL provides solid guidance, support & solutions to businesses, governments and non-profits.” Source: RevenueBase Database · checked Sep 21, 2026
2	Haskell & White LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	133 contacts →
	Partial evidence “Haskell & White LLP is one of the largest independently owned accounting, auditing and tax consulting firms in Southern California, specializing in servicing public and private…” Source: RevenueBase Database · checked Sep 21, 2026
3	Wright Ford Young & CO	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	93 contacts →
	Partial evidence “We are a full service mezzanine accounting firm that provides an atmosphere where people can flourish in their careers, while at the same time, being able to have meaningful…” Source: RevenueBase Database · checked Sep 21, 2026
4	Squar Milner	Strong evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	501-1,000	84 contacts →
	Strong evidence “Squar Milner is one of the nation’s 40 largest accounting firms as well as one of the largest independent accounting and advisory firms in California.” Source: RevenueBase Database · checked Sep 21, 2026
5	Greengrowth Cpas	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	71 contacts →
	Indirect evidence “Welcome to GreenGrowth CPAs, your strategic partner dedicated to empowering businesses to achieve their full potential.” Source: RevenueBase Database · checked Sep 21, 2026
6	Redwitz, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	69 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
7	RJI Cpas	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	59 contacts →
	Partial evidence “RJI CPAs is a full-service accounting and consulting firm based in Irvine, California.” Source: RevenueBase Database · checked Sep 21, 2026
8	KBF Cpas	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	56 contacts →
	Partial evidence “KBF is a fast-growing CPA firm that offers a comprehensive range of tax, assurance and advisory services.” Source: RevenueBase Database · checked Sep 21, 2026
9	Blythe Global Advisors	Strong evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	51 contacts →
	Strong evidence “Blythe Global Advisors is a full-spectrum accounting advisory firm with a difference.” Source: RevenueBase Database · checked Sep 21, 2026
10	Skinner Fouch & Olson LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	44 contacts →
	Partial evidence “Our purpose is to add value to the business of our clientele through transactional specific and organizational business advisory services.” Source: RevenueBase Database · checked Sep 21, 2026
11	Bharmal & Associates, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	23 contacts →
	Partial evidence “We are no ordinary accounting firm.” Source: RevenueBase Database · checked Sep 21, 2026
12	White Nelson Diehl Evans LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	21 contacts →
	Partial evidence “White Nelson Diehl Evans LLP is a full-service accounting firm that prides itself on delivering personal service while supporting your most demanding global needs.” Source: RevenueBase Database · checked Sep 21, 2026
13	Sagelight Accounting	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	21 contacts →
	Partial evidence “At Sagelight Accounting, we go beyond basic compliance.” Source: RevenueBase Database · checked Sep 21, 2026
14	KMJ Corbin & Company	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Partial evidence “KMJ provides accounting, auditing, tax and consulting services to public and private companies in the small to middle markets.” Source: RevenueBase Database · checked Sep 21, 2026
15	Smith Dickson, Certified Public Accountants, LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Founded in 1982, Smith Dickson, Certified Public Accountants, LLP, is a full-service Southern California CPA firm that specializes in providing high-quality services designed to…” Source: RevenueBase Database · checked Sep 21, 2026
16	Maxwell & Company Cpa's, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	11 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
17	Cpaclub	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	11 contacts →
	Partial evidence “CPAClub is your fractional national office to help your accounting firm move forward.” Source: RevenueBase Database · checked Sep 21, 2026
18	Mgo- Irvine Office	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	11 contacts →
	Indirect evidence “The Irvine operation will be part of a network of 16 MGO offices in major economic centers across the US, as well as the firm’s Global Centers of Excellence in Delhi and Bangalore…” Source: RevenueBase Database · checked Sep 21, 2026
19	Areté Advisors	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “At Areté Advisors, we believe every client deserves expert financial guidance, not just at tax time, but throughout every stage of their business and personal financial journey.” Source: RevenueBase Database · checked Sep 21, 2026
20	Plushstone Advisory, TAX & Accountancy	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “PlushStone Advisory is a relationship focused CPA firm helping clients with bookkeeping, strategic tax planning, and financial advisory services to help businesses make educated…” Source: RevenueBase Database · checked Sep 21, 2026
21	Harris Greene LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	5 contacts →
	Partial evidence “Harris Greene LLP is an accounting company based out of United States.” Source: RevenueBase Database · checked Sep 21, 2026
22	The Gilson Group	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “The Gilson Group was founded with a vision – to work with Board of Directors, CEO's and Financial Executives of public and private companies to increase shareholder value through…” Source: RevenueBase Database · checked Sep 21, 2026
23	P1 Accounting Solutions	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	11-50	4 contacts →
	Indirect evidence “Be Ready For The Road Ahead.” Source: RevenueBase Database · checked Sep 21, 2026
24	Masler And Associates, Certified Public Accountant	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Masler & Associates is an Irvine, Orange County Certified Public Accountant (CPA) firm committed to comprehensive service and representation of its small businesses, medical and…” Source: RevenueBase Database · checked Sep 21, 2026
25	Mediabooks	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “The only place on the internet where creative accounting isn't a bad thing.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: accounting advisory services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names accounting advisory services.
Partial evidence: Its own public description names part of accounting advisory services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting advisory services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 45 accounting advisory services based in Irvine, United States

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Accounting advisory services based in Irvine, United States at a glance

As of Sep 21, 2026

44.4%Verified-email coverage

26.8Average contacts per company

11-50Median size (employees)

402.2%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 45 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 accounting advisory services, 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 Irvine, United States whose own description of what they do matches “accounting advisory services”. 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 accounting advisory services), 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 accounting advisory services, and records with no verified work email. Companies headquartered outside Irvine 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, 536 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 21, 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.

Accounting advisory services by metro in the United States

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 accounting advisory services, 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 accounting advisory services are there based in Irvine, United States?

RevenueBase identified 45 accounting advisory services headquartered in Irvine, United States 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?

Lsl, LLP, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most accounting advisory services?

New York leads with 181 headquartered companies, followed by Houston (114) and Atlanta (100).

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 536 verified decision-maker contacts tracked across these 45 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 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 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.