# The 50 largest accounting firms in California

Tamtam tracks 54 accounting firms headquartered in California. This list ranks the 50 largest by number of employees on LinkedIn, led by Andersen, Armanino and BPM LLP. Their median headcount is 362. Half of them were founded in 2002 or later. The most common headquarters are San Francisco (9), Los Angeles (7) and Irvine (3).

The accounting firms in California are primarily mid-sized and large firms, with a focus on comprehensive financial services. Many offer a range of accounting, tax, and consulting solutions, catering to diverse industries. For example, Andersen provides global accounting and tax services, Armanino offers CPA and consulting services, and BPM LLP is a top public accounting firm recognized for growth. GHJ is an advisory and accounting firm serving nonprofit, food and beverage, and entertainment sectors. CCG specializes in tax credit consulting, while Novogradac focuses on real estate and affordable housing.

A clear pattern among these firms is the concentration of headquarters in major Californian cities. San Francisco, Los Angeles, and the surrounding Bay Area are prominent locations, indicating a regional hub for financial and accounting expertise. The founding dates span several decades, with many firms established in the mid-to-late 20th century, such as Armanino (1969) and Frank, Rimerman + Co. LLP (1949), alongside more recent establishments like Scrubbed (2012).

🇺🇸 California · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Andersen](https://www.tamtam.ai/c/andersen) (andersen.com)<br>Global association of independent member firms with 14,000 professionals offering comprehensive solutions in accounting, law, and tax services worldwide With 2,000 personnel in the US | Financial Services | 🇺🇸 San Francisco | 3,560 |  |
| 2 | [Armanino](https://www.tamtam.ai/c/armanino) (armanino.com)<br>A leading CPA & consulting firm offering top-tier services with a strong community commitment, industry expertise, and personal client attention | Accounting | 🇺🇸 San Ramon | 3,297 | 1969 |
| 3 | [BPM LLP](https://www.tamtam.ai/c/bpm-llp) (bpm.com)<br>Top 35 US public accounting firm in various industries, recognized for fast growth Offers diverse, progressive solutions as certified B Corp | Business Consulting and Services | 🇺🇸 San Francisco | 1,864 | 1986 |
| 4 | [GHJ](https://www.tamtam.ai/c/ghj) (ghjadvisors.com)<br>National advisory and accounting firm serving clients globally in nonprofit, food and beverage, entertainment, and health industries, leveraging a global network for comprehensive services (Note: This summary is based on the provided content without mentioning the company name) | Accounting | 🇺🇸 Los Angeles | 1,768 | 1953 |
| 5 | [CCG](https://www.tamtam.ai/c/ccg-pasadena) (ccg.com)<br>A national tax credit consulting firm in Pasadena, CA, specializing in helping companies maximize hiring-based and location-based tax credits | Accounting | 🇺🇸 Pasadena | 1,417 | 2002 |
| 6 | [Novogradac](https://www.tamtam.ai/c/novogradac) (novoco.com)<br>Accounting and consulting services specializing in real estate, affordable housing, community development, renewable energy, and valuation for national clients. | Accounting | 🇺🇸 San Francisco | 829 | 1989 |
| 7 | [Frank, Rimerman + Co. LLP](https://www.tamtam.ai/c/frank-rimerman-co-llp) (frankrimerman.com)<br>A top accounting firm with over 70 years of experience, providing local and global accounting and consulting services to individuals and businesses | Accounting | 🇺🇸 Palo Alto | 805 | 1949 |
| 8 | [MGO (Macias Gini & O'Connell LLP)](https://www.tamtam.ai/c/mgo-macias-gini-and-o-connell-llp) (mgocpa.com)<br>Global team of financial service professionals providing assurance, tax, advisory, outsourcing, and private client services with a focus on outstanding service experiences and sophisticated digital tools | Accounting | 🇺🇸 Los Angeles | 592 | 1987 |
| 9 | [FLORES](https://www.tamtam.ai/c/flores) (flores-financial.com)<br>A leading provider of financial services and HR solutions for hospitality, grocery, and retail industries, offering expertise, tools, and technology for business success and growth | Accounting | 🇺🇸 Santee | 587 | 1982 |
| 10 | [QuickBooks Online Professional](https://www.tamtam.ai/c/quickbooks-online-professional) (yourocbookkeeper.com)<br>Specializing in customized accounting services for business owners, we offer tailored solutions based on individual needs with 20 years of experience No one-size-fits-all approach here | Accounting | 🇺🇸 Laguna Hills | 583 | 1998 |
| 11 | [Gelfand, Rennert & Feldman, LLC](https://www.tamtam.ai/c/gelfand-rennert-and-feldman-llc) (grfllp.com)<br>A full-service business management firm founded in 1967, providing comprehensive financial services to entertainers, executives, and high net worth individuals in various creative industries | Financial Services | 🇺🇸 Century City | 559 | 1967 |
| 12 | [Scrubbed](https://www.tamtam.ai/c/scrubbed) (scrubbed.net)<br>Outsourced professional services firm offering accounting, finance, tax services, and support for professional firms without requiring a state license | Financial Services | 🇺🇸 Burlingame | 549 | 2012 |
| 13 | [HC Global Fund Services, LLC](https://www.tamtam.ai/c/hc-global-fund-services-llc) (hcglobalfs.com)<br>A global firm offering tailored fund services, tax and consulting services to fund managers, specializing in alternative investments across various industries | Financial Services | 🇺🇸 San Francisco | 521 | 2008 |
| 14 | [SingerLewak LLP](https://www.tamtam.ai/c/singerlewak-llp) (singerlewak.com)<br>A leading West Coast public accounting firm providing tailored accounting, advisory, and tax services with a focus on client relationships and industry leadership | Accounting | 🇺🇸 Los Angeles | 519 | 1959 |
| 15 | [NKSFB](https://www.tamtam.ai/c/nksfb) (nksfb.com)<br>This business management firm offers concierge-style services to top artists in music, film, and television, as well as athletes and high achievers | Accounting | 🇺🇸 Los Angeles | 508 | 1981 |
| 16 | [Sensiba LLP](https://www.tamtam.ai/c/sensiba-llp) (sensiba.com)<br>Providing accounting, tax, and consulting services to help businesses and individuals solve problems, navigate complexity, and achieve sustainable growth Passionate about collaboration and social impact | Accounting | 🇺🇸 San Jose | 479 | 1977 |
| 17 | [Liberty Tax Service](https://www.tamtam.ai/c/liberty-tax-service) (libertytax.com)<br>A leading retail tax preparation company with over 4,000 offices in the US and Canada, focused on exceptional customer service and community involvement | Accounting | 🇺🇸 Seaside | 447 | 2014 |
| 18 | [Valueonshore ('VOS') Advisors](https://www.tamtam.ai/c/valueonshore-vos-advisors) (valueonshore.com)<br>Global advisory specializing in Governance, Risk Advisory, Accounting, Due Diligence, Technology Solutions, and Operations Consulting for multinational and Indian clients | Business Consulting and Services | 🇺🇸 San Jose | 446 | 2009 |
| 19 | [Every](https://www.tamtam.ai/c/every) (every.io)<br>Streamline back office operations with AI technology for improved workflows in banking, bill payments, bookkeeping, tax, HR, payroll, and benefits | Financial Services | 🇺🇸 San Francisco | 432 | 2021 |
| 20 | [Enterslice](https://www.tamtam.ai/c/enterslice) (enterslice.com)<br>Award-winning legal tech firm. Helps entrepreneurs start, manage businesses. Fintech consulting, M&A approvals, tax litigation, audit excellence, growth advisory, business automation, virtual CFO, on-demand legal, cybersecurity audits. | Financial Services | 🇺🇸 Los Angeles | 426 | 2014 |
| 21 | [Pilot.com](https://www.tamtam.ai/c/pilot-com) (tinyurl.com)<br>A provider of accounting, CFO, and tax services for startups and small businesses, focusing on sustainable growth and operational efficiency | Accounting | 🇺🇸 San Francisco | 425 | 2016 |
| 22 | [Optima Tax Relief](https://www.tamtam.ai/c/optima-tax-relief) (optimataxrelief.com)<br>A leading tax resolution firm helping individuals and small business owners resolve IRS or state tax burdens, with a unique two-phase approach and expert professionals | Financial Services | 🇺🇸 Santa Ana | 422 | 2011 |
| 23 | [SK Enterprises](https://www.tamtam.ai/c/sk-enterprises) (skeusa.com)<br>A full-service accounting firm offering affordable, experienced, and friendly services to business owners, executives, and independent professionals | Accounting | 🇺🇸 Artesia | 376 | 1985 |
| 24 | [Proper AI](https://www.tamtam.ai/c/proper-ai) (internettepat.telkomsel.com)<br>A global team of diverse professionals providing cost-effective financial services in the property industry, prioritizing human-centric values, collaboration, and personal growth | Software Development | 🇺🇸 San Francisco | 365 | 2017 |
| 25 | [Apercen Partners LLC](https://www.tamtam.ai/c/apercen-partners-llc) (apercen.com)<br>Apercen is a tax consulting firm specializing in high net-worth individuals, offering income and multi-generational tax planning services for venture, hedge, and private equity partners | Accounting | 🇺🇸 Palo Alto | 362 | 2008 |
| 26 | [Chugh, LLP](https://www.tamtam.ai/c/chugh-llp) (chugh.com)<br>A full-service law and tax firm with multiple offices specializing in immigration, corporate law, taxation, litigation, employment, and mergers & acquisitions | Law Practice | 🇺🇸 Cerritos | 352 | 1992 |
| 27 | [MontPac](https://www.tamtam.ai/c/montpac) (montpac.com)<br>Outsourced accounting and financial management firm serving SMEs and large companies, specializing in startups and property management accounting with 300+ employees globally | Accounting | 🇺🇸 Granite Bay | 314 | 2006 |
| 28 | [Bench Accounting by Mainstreet](https://www.tamtam.ai/c/bench-accounting-by-mainstreet) (bench.co)<br>Professional bookkeeping and tax filing services with a dedicated team offering unlimited advisory services, empowering small businesses to focus on their core activities | Accounting | 🇺🇸 San Francisco | 308 | 2012 |
| 29 | [Collective](https://www.tamtam.ai/c/collective) (collective.com)<br>A financial platform for independent professionals, handling company formation, taxes, accounting, and bookkeeping to allow them to focus on their passion | Financial Services | 🇺🇸 San Francisco | 304 | 2020 |
| 30 | [Gursey \| Schneider LLP](https://www.tamtam.ai/c/gursey-schneider-llp) (gursey.com)<br>A premier Los Angeles accounting firm providing integrated services in accounting, business management, litigation support, and business valuation Multiple office locations available | Accounting | 🇺🇸 Los Angeles | 277 |  |
| 31 | [CHW, LLP](https://www.tamtam.ai/c/chw-llp) (chwllp.org)<br>This company provides audit and assurance services, with a focus on healthcare organizations and maximizing Medicare/Medicaid reimbursements while ensuring compliance | Accounting | 🇺🇸 Fresno | 202 | 2014 |
| 32 | [TaxRise](https://www.tamtam.ai/c/taxrise) (taxrise.com)<br>A technology-driven tax resolution company dedicated to helping clients resolve tax problems with expertise, empathy, and cutting-edge software | Financial Services | 🇺🇸 Irvine | 194 | 2017 |
| 33 | [LSL, LLP](https://www.tamtam.ai/c/lsl-llp) (lslcpas.com)<br>LSL CPAs provides comprehensive accounting and financial services with specialized expertise in various industries, focusing on auditing, advisory, taxes, and financial services | Accounting | 🇺🇸 Irvine | 186 | 1929 |
| 34 | [myStartUpCFO](https://www.tamtam.ai/c/mystartupcfo) (mystartupcfo.com)<br>Provides comprehensive CFO services to startups, including financial management, business advice, fundraising support, and tax compliance at various levels | Accounting | 🇺🇸 Fremont | 183 | 2015 |
| 35 | [TAG](https://www.tamtam.ai/c/tag-san-diego) (teamtag.net)<br>An established firm offering outsourced accounting services, high-level financial management for affluent families, and expertise in Sage construction software | Accounting | 🇺🇸 La Jolla | 181 | 1996 |
| 36 | [indinero](https://www.tamtam.ai/c/indinero) (indinero.com)<br>This company provides integrated finance solutions for businesses in the US through a team of bookkeepers, accountants, tax advisors, and CFOs, all powered by technology | Financial Services | 🇺🇸 Los Angeles | 162 | 2009 |
| 37 | [SOAProjects, Inc.](https://www.tamtam.ai/c/soaprojects-inc) (soaprojects.com)<br>Dynamic company offering comprehensive services in technical accounting, cybersecurity, data analytics, and more to help businesses optimize operations and stay ahead | Accounting | 🇺🇸 Mountain View | 116 | 2004 |
| 38 | [Gumbiner Savett](https://www.tamtam.ai/c/gumbiner-savett) (bpmcpa.com)<br>A diverse accounting firm with deep expertise and a caring approach, offering services in accounting, compliance, and tax planning across multiple locations | Accounting | 🇺🇸 Santa Monica | 56 | 1950 |
| 39 | [Financial Accounting Services, Inc.](https://www.tamtam.ai/c/financial-accounting-services-inc) (taxmanfred.com)<br>A comprehensive company offering accounting, tax, and investment advisory services to individuals and businesses | Accounting | 🇺🇸 Temecula | 42 | 1995 |
| 40 | [El Triunfo Corporation](https://www.tamtam.ai/c/el-triunfo-corporation) (eltriunfo.com)<br>A leading financial firm offering personalized guidance including tax management, accounting, audits, financial statements, and planning to individuals and businesses | Accounting | 🇺🇸 Santa Ana | 35 | 2008 |
| 41 | [ASTUTE](https://www.tamtam.ai/c/astute) (thinkastute.com)<br>A value-add accounting and business advisory firm in Silicon Valley, helping companies with compliance, revenue recovery, profitability, and tax strategies | Accounting | 🇺🇸 Pleasanton | 34 |  |
| 42 | [The Accountancy, LLP](https://www.tamtam.ai/c/the-accountancy-llp) (theaccountancy.com)<br>The company provides tax, assurance, and advisory services, offering innovative solutions and unexpected insights to help clients achieve their goals | Accounting | 🇺🇸 Glendale | 31 | 1946 |
| 43 | [Finch Accounting](https://www.tamtam.ai/c/finch-accounting) (finch.co)<br>This company provides comprehensive accounting and finance services for start-ups, non-profits, and churches, offering a dedicated CPA and financial analyst for each client | Accounting | 🇺🇸 Irvine | 19 | 2014 |
| 44 | [Ferguson Associates](https://www.tamtam.ai/c/ferguson-associates) (fergusonassociates.com)<br>Specializing in providing accounting and consulting services to support businesses with their financial management and strategic decision-making | Accounting | 🇺🇸 Santa Barbara | 15 | 2010 |
| 45 | [Ganze & Company](https://www.tamtam.ai/c/ganze-and-company) (ganzetax.com)<br>This company values relationships and provides top-quality financial and personal services to help clients achieve their goals, with a focus on excellence and client success | Accounting | 🇺🇸 Napa | 10 |  |
| 46 | [Automated Business Services](https://www.tamtam.ai/c/automated-business-services) (abiz.us.com)<br>This company offers tax, accounting, and payroll services, as well as accounting software setup and training for businesses | Accounting | 🇺🇸 Rancho Palos Verdes | 8 | 1988 |
| 47 | [TOPC Potentia](https://www.tamtam.ai/c/topc-potentia) (topc.us)<br>An accounting firm in California specializing in audit, tax, and business management services for Japanese and multi-national companies, focusing on empowering clients for success | Accounting | 🇺🇸 Gardena | 7 | 1999 |
| 48 | [Morris+D'Angelo -- Not Just another CPA Firm](https://www.tamtam.ai/c/morris-d-angelo-not-just-another-cpa-firm) (cpadudes.com)<br>A global financial consultancy firm prioritizing clients' freedom and independence to achieve optimal financial outcomes through strategic services and personalized pricing | Financial Services | 🇺🇸 San Jose | 5 | 1996 |
| 49 | [Granados Hillman LLP](https://www.tamtam.ai/c/granados-hillman-llp) (granadoshillman.com)<br>Providing accurate and timely accounting services for small businesses, helping them make informed decisions and stay tax compliant专注为小型企业提供及时准确的会计服务，帮助他们做出明智决策并保持税务合规。 | Accounting | 🇺🇸 St Helena | 4 | 2017 |
| 50 | [Boroff & Nyberg LLP](https://www.tamtam.ai/c/boroff-and-nyberg-llp) (boroffnyberg.com)<br>A firm specializing in tax services, accounting solutions, and professional consulting for businesses and individuals | Accounting | 🇺🇸 Orange | 4 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in California

- [The largest companies in California](https://www.tamtam.ai/l/largest-companies-california) (15,264)
- [Multinational companies in California](https://www.tamtam.ai/l/multinational-companies-california) (2,591)
- [SaaS companies in California](https://www.tamtam.ai/l/saas-companies-california) (1,854)
- [Software Development companies in California](https://www.tamtam.ai/l/software-development-companies-california) (1,649)
- [AI companies in California](https://www.tamtam.ai/l/ai-companies-california) (1,296)
- [Companies with in-house R&D in California](https://www.tamtam.ai/l/r-and-d-companies-california) (1,275)
- [Manufacturers in California](https://www.tamtam.ai/l/manufacturers-california) (1,066)
- [Hardware manufacturers in California](https://www.tamtam.ai/l/hardware-companies-california) (985)
- [IT Services and IT Consulting companies in California](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-california) (968)
- [Education providers in California](https://www.tamtam.ai/l/education-companies-california-united-states) (950)
- [Subscription businesses in California](https://www.tamtam.ai/l/subscription-businesses-california) (939)
- [Venture capital and private equity firms in California](https://www.tamtam.ai/l/vc-and-private-equity-firms-california) (917)
- [Professional services firms in California](https://www.tamtam.ai/l/professional-services-firms-california) (880)
- [Companies with a mobile app in California](https://www.tamtam.ai/l/companies-with-mobile-app-california) (827)
- [Retail chains in California](https://www.tamtam.ai/l/retail-chains-california) (803)
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- [Financial Services companies in California](https://www.tamtam.ai/l/financial-services-companies-california) (642)
- [Healthcare providers in California](https://www.tamtam.ai/l/healthcare-providers-california) (569)
- [AI-native companies in California](https://www.tamtam.ai/l/ai-native-companies-california) (561)
- [Hospitals and Health Care companies in California](https://www.tamtam.ai/l/hospitals-and-health-care-companies-california) (555)
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## The same list elsewhere in United States

- [Accounting firms in the United States](https://www.tamtam.ai/l/accounting-firms-united-states) (387)
- [Accounting firms in New York State](https://www.tamtam.ai/l/accounting-firms-new-york-state) (57)
- [Accounting firms in Texas](https://www.tamtam.ai/l/accounting-firms-texas) (27)
- [Accounting firms in New York](https://www.tamtam.ai/l/accounting-firms-new-york) (37)

## The same list elsewhere

- [Accounting firms in the world](https://www.tamtam.ai/l/accounting-firms-in-the-world) (3,737)
- [Accounting firms in North America](https://www.tamtam.ai/l/accounting-firms-in-north-america) (441)

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Source: https://www.tamtam.ai/l/accounting-firms-california