Over 25 Years of Dedicated Accounting Services.

O&S CPAs & Business Advisors is a high-ranking firm based in Long Beach, California. We are business CPAs who assist privately held companies with accounting, forensic accounting, and tax services. Specifically, we assist individuals and business owners via proactive tax planning, accounting and management consulting to enhance their wealth.

Nonprofits, medical practices, manufacturing companies, forensic accounting, and estate and trusts are some of the niche industries that we serve. We are the best fit for companies that are in growth mode, and need interim CFO, or higher level accounting services to oversee their internal staff.

We serve Los Angeles, Orange, Riverside and San Bernardino Counties. Our accountants focus on tax planning and compliance for individuals, corporations, partnerships, estates and trusts. Much of our work is done remotely, so we have the ability to work with privately held companies throughout California.

In addition, we specialize in compliance and accounting related services for non-profit organizations, and governmental entities.

Business CPAs

Our Accountants have over 25 years of experience in tax and accounting. We are dedicated to providing excellent service to our clients. We have been awarded the 2019 Accounting Today’s Best Accounting Firms To Work For;  2019 Best Companies For WomenDatabird Business Journal ; 2019 The List Top 100 Accounting Firms, Los Angeles Business Journal “The List” and 2019 Best of Accounting by ClearlyRatedWe have also be awarded “One of The Best Places to Work” in Los Angeles County by the LA Business Journal during 2008-2016.

2019 Best of Accounting Awards List

If you require a CPA that goes above and beyond in the areas of tax and accounting, please contact Onisko & Scholz today.