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California Audit, Tax and Consulting

A strong history serving California

With offices throughout California–including San Francisco, San Jose, Los Angeles, Irvine and San Diego–RSM has an expansive presence in the state that continues to be one of the major international hubs of innovation and business leadership. We serve more than 2,000 businesses in all major industries–many with a global presence. Our client base continues to grow as does our commitment to professional development of our skilled workforce. We take pride in our diversity–both within our employee base and the clients that we serve.

Commitment to the community

Our commitment to California extends beyond serving the needs of our clients. Our personnel devote their time, money and efforts to many local charitable organizations, fundraisers and events. For example, in 2015 RSM raised approximately $70,000 to benefit a variety of charities in California through the firm’s Birdies Fore Love program as a part of the 2015 RSM Classic.

Employment opportunities

For information about the employment opportunities currently available in California, please visit the Careers section of our site.

California Insights

California enacts budget with selective conformity to the TCJA

The California fiscal year 2020 budget addresses TCJA conformity and other new and amended state tax provisions.

California enacts changes to recent remote seller provisions

California amends the effective date for district remote seller nexus requirements; offers penalty relief for certain marketplace sellers.

California enacts $500,000 remote seller nexus threshold

New threshold replaces previous guidance adopting lower sales and transaction thresholds; legislation adopts marketplace provider nexus.

San Francisco business tax developments to review for 2019

New and increased San Francisco gross receipts taxes take effect in 2019; economic nexus standard of $500,000 adopted.

California releases notices on remote sales tax collection

Economic sales tax nexus enforcement to begin on April 1, 2019 with adoption of $100,000 sales or 200 transaction thresholds.

California amends partnership apportionment rules

Amended rules address apportionment and allocation of income from partnership interests owned by corporate partners.

California adopts partnership audit rules; updates estimated payments

California conforms to the federal audit reporting rules for partnerships, and the Franchise Tax Board provides tax payment confirmations.

IRS announces tax relief for California wildfire victims

The IRS announced tax relief, including extended deadlines, to certain California counties impacted by the wildfires.

San Francisco voters approve new Homelessness Gross Receipts tax

San Francisco voters approved Proposition C, the Homelessness Gross Receipts Tax Ordinance, effective Jan. 1, 2019.

California revises (slightly) the definition of 'doing business'

Franchise Tax Board further modifies existing guidance for business entity members of LLCs following the Swart decision.

California Office Locations

Irvine
18401 Von Karman Ave.
Fifth Floor
Irvine, CA 92612
949.255.6500

Paul Short, Irvine office leader


Los Angeles
515 South Flower St.
17th Floor
Los Angeles, CA 90071
213.330.4800

Joe Mazza, Los Angeles office leader


San Diego
3430 Carmel Mountain Road
Suite 200
San Diego, CA 92121
619.281.7764

Jerry Varga, San Diego office leader

Sam Mascareno, West market leader


San Francisco
44 Montgomery St.
Suite 3900
San Francisco, CA 94104
415.848.5300

Tim Tiefenthaler, San Francisco office leader


San Jose
100 West San Fernando St.
Suite 460
San Jose, CA 95113
408.572.4440


Careers in California

Search open positions in California, or learn more about working at RSM.

Still a student? Learn more about our Internships.


California Events

2019 Middle Market Economic Update

RSM’s chief economist will update on macroeconomic market trends, trends in the Bay Area and expected changes in the environment.

  • September 26, 2019

Meet RSM at the 2019 IIA International Conference

RSM is a proud sponsor of the Institute of Internal Auditor 2019 International Conference at the Anaheim Convention Center in Anaheim, CA.

  • July 07, 2019

2018 Middle Market Economic Update—San Diego

RSM’s chief economist, Joe Brusuelas, will discuss macroeconomic market trends and expected changes in the financial environment.

  • October 25, 2018

RSM and Microsoft's 2018 Middle Market Economic Outlook

Joe Brusuelas will provide a keynote speech on macroeconomic market trends, trends in the Bay Area and expected changes in the environment.

  • September 26, 2018