Established in 1939 in Pasadena, California, KROST, is a full-service Certified Public Accounting and Consulting firm serving clients across various industries. Our focus is recognizing opportunities and creating value for our clients by equipping them with the tools to make better business and financial decisions for the future. As trusted advisors, our clients depend on us to provide timely information, innovative solutions, and result-driven teamwork to ensure success.

Our sister company KBKG provides tax specialty services nationwide. Our turn-key solutions complement traditional tax and accounting practices. Our engineers and tax experts work directly with CPAs and their clients on specialty tax projects such as R&D Tax Credits, Cost Segregation, Green Building Tax Incentives (179D & 45L), Employment Tax Credits, Property Tax Review, Transfer Pricing and more. Our ability to work seamlessly with other firms is the reason so many CPAs across the nation trust and refer us to their clients.

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Gak Krost

A Message from the Managing Shareholder, Gregory A. Kniss

Our team of professionals has saved our clients millions of dollars in taxes. We focus on fulfilling the needs of our clients, affiliates, and referral sources by providing quality service and building a long term relationship with exceptional standards. Our goal is to always meet or exceed expectations with our expertise, professionalism, and deliverables.

Contact Us

KROST Certified Public Accountants & Consultants

790 E Colorado Blvd, Suite 600, Pasadena, CA 91101

+1 626 449 4225

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Firm Locations

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Primary Location

790 E Colorado Blvd, Suite 600, Pasadena, CA 91101, United States

Gregory Kniss, Managing Shareholder
+1 626 449 4225

Los Angeles, CA, United States

6100 Center Dr, Suite 950, Los Angeles, CA 90045, United States

+1 310 846 5770

Valencia, CA, United States

26650 The Old Rd, Suite 216, Valencia, CA 91381, United States

+1 877 525 4462

Woodland Hills, CA, United States

21800 Oxnard Blvd, Suite 1040, Woodland Hills, CA 91367, United States

+1 877 525 4462

Chicago, IL, United States

1132 S Wabash Ave, Suite 505, Chicago, IL 60605, United States

+1 877 525 4462

Bedford, TX, United States

1600 Airport Freeway, Ste. 372, Bedford, TX 76022, United States

+1 626 449 4225

Columbus, OH, United States

460 Polaris Pkwy, Columbus, OH 43082, United States

+1 877 525 4462

New York, NY, United States

255 W 36th Street Ste 504, New York, NY 10018, United States

+1 877 525 4462

Alpharetta, GA, United States

44 Milton Ave, Alpharetta, GA 30009, United States

+1 949 836 0418

People at KROST Certified Public Accountants & Consultants

Greg Kniss Photo

Greg Kniss

Managing Shareholder

Lou Guerrero Photo

Lou Guerrero


Keith Hamasaki Photo

Keith Hamasaki

Director – Assurance & Advisory

Paren Knadjian Photo

Paren Knadjian

Practice Leader - M&A and Capital Markets

Gian Pazzia Photo

Gian Pazzia


Stacey Korman Photo

Stacey Korman


John Hanning Photo

John Hanning


Malik Javed Photo

Malik Javed


So Sum Lee Photo

So Sum Lee


Alex Martin Photo

Alex Martin

Principal - Transfer Pricing

Jason Melillo Photo

Jason Melillo


Donna Bateman Photo

Donna Bateman


Scott Gilmore Photo

Scott Gilmore


Tetyana Guguchkina Photo

Tetyana Guguchkina

Sr. Manager - R&D Tax Credits

Ricky Yau Photo

Ricky Yau

Director - IT

Lisa Arangua Photo

Lisa Arangua

Manager - Human Resources

Sossi Bekarian Photo

Sossi Bekarian

Manager - Accounting

Sasha Brenecki Photo

Sasha Brenecki

Manager - Cost Segregation Services

Anna Chen Photo

Anna Chen

Manager - Marketing

Steve Chhuor Photo

Steve Chhuor

Manager – Assurance & Advisory

Evelyn Fernandez Photo

Evelyn Fernandez

Senior Manager - Tax

Mara Garcia Photo

Mara Garcia

Manager - Assurance & Advisory

Gina Lim Photo

Gina Lim

National Director - Business Development

Jonathan Louie Photo

Jonathan Louie

Manager - Tax

Elise Rhee Photo

Elise Rhee

Manager – R&D Tax Credits

Harry Sahi Photo

Harry Sahi

Manager - Cost Segregation Services

Ryan VanderVelden Photo

Ryan VanderVelden

Manager - Cost Segregation Services

Matthew Weber Photo

Matthew Weber

Manager - Tax

Aric Wong Photo

Aric Wong

Manager - Tax

Lon OConnor Photo

Lon OConnor

Thought Leadership by KROST Certified Public Accountants & Consultants