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

IRS provides temporary penalty relief for using dyed diesel fuel in LA

IRS waives penalty for using dyed diesel fuel on highways in several Louisiana parishes through Sept. 30, 2021.

California enacts SALT cap workaround

The entity-level tax election is effective for tax years beginning on or after Jan. 1, 2021 and ending before Jan. 1, 2026.

California amends remote worker nexus guidance

California FTB amends remote worker nexus guidance, teleworking employees will create nexus and exceed P.L. 86-272 protections.

San Francisco business taxes in 2021: What you need to know

Businesses with San Francisco activity should be prepared to understand a number of recent changes and updates to city tax law.

California notice on methods changes is a reminder for all taxpayers

Taxpayers should plan accordingly as the states are aware of the increase in accounting methods changes due to recent federal changes.

2020 Elections: State and local tax ballot measures to know

Looming budget shortfalls coupled with tax-related ballot measures in many states could significantly affect 2021.

Guidance for taxpayers affected by CA wildfires and IA derecho

IRS extended filing and paying deadlines and TTB updated disaster relief guidance for taxpayers affected by CA wildfires and IA derecho.

California contractor's purchase of steel taxable at time of sale

California Office of Tax Appeals determined that a construction company could not use a resale certificate for material purchases.

California enacts net operating loss and credit limits due to COVID-19

Fiscal year 2021 budget includes temporary tax changes in order to generate much needed revenue in the COVID-19 economy.

California Office of Tax Appeals denies research credit refund

The Office of Tax Appeals determined that the taxpayer did not show that it undertook a process of experimentation.

California Office Locations

Orange County
17400 Laguna Canyon Road
Suite 200
Irvine, CA 92618

Paul Short, Irvine office leader

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

Leslie Stackpole, Los Angeles office leader

Joe Mazza, Southwest market leader

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

Jerry Varga, San Diego office leader

Sam Mascareno, West market leader

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

Tim Tiefenthaler, San Francisco office leader

Silicon Valley
333 W San Carlos St
Suite 700
San Jose, CA 95110

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

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