About Us

Mohamed Youssef, CPA, ABV

I’m a CPA and ABV. I began my career with KPMG (one of the Big 4 accounting firms) and have been in business for over 20 years. I started my firm Nexus Square in 2009 to provide the same level of experience in accounting and tax offered by big accounting firms to small businesses and their owners. I was born and raised in Egypt and currently live in Orange County, CA, along with my wife and two daughters. When not in the office, I enjoy running (finished two marathons in Los Angeles and Chicago), hiking, and going to the gym.


The Challenge

The accounting tasks for newly formed businesses are usually handled by the founder or a family member. This may lead to errors in the financial statements presented to potential investors or used to prepare the annual tax returns.


Our Solution

Nexus Square streamline the accounting tasks and provide accurate financial information so business owners can focus on what matters most – building their dream.

Why you should consider outsourcing your CFO and accounting to Nexus Square?

Nexus Square is a full-service accounting firm based in Orange County, California. Our team of professionals can do accounting and tax work as innovatively and efficiently as possible, advise on strategic tax planning to minimize tax liability, and improve business processes. We act as a trusted advisor to our clients to help them tackle all challenges they are facing.

Cost Savings

Since accounting processes are complicated yet very substantial parts within an organization, staffing an entire accounting department with a new workforce will involve budget-draining recruitment and training. To avoid this, an organization outsources part of or the entirety of its accounting functions to save a considerable amount on operating costs.

Improve Efficiency in Your Operations

When it comes to your business, improving the efficiency of your operations can boost your bottom line as well as increase your competitiveness.

We research and understand the best cloud based technologies in the marketplace, and determine how they can work together to provide seamless integration for maximum operational efficiency and accuracy.

Access to Best Talent

We pride ourselves on having a friendly, knowledgeable, and technologically advanced staff that specializes in timely, detailed, and accurate numbers. From business entity selection and formation to bookkeeping to tax preparation services, our experienced accountants are ready to assist you.

Year End Planning & Tax Filing

Your accounting team will package up all your financial statements at year end, so you don’t have to scramble. We’ll ensure that your taxes are filed and paid, and keep you in compliance so you can avoid unpleasant conversations with the IRS.

Real-time Dashboard and Reporting
Too many business owners are frustrated with their accountants because they don’t get timely and accurate financial data to help run their business, make decisions, or prepare for upcoming financing transactions.
We provide online tools so you can access your financial data when you want, where you want, on any device. You’re free to be mobile – not chained to your desktop.

Let Us Help:

Contact Us

Customer Stories

Steve Shinn

This is the second year Nexus Square has helped me complete the tax return for the PTA at my daughters elementary school. It is nice to have an organization that is knowledgeable about non-profit groups and how to file their taxes properly. Thank you again to Hazel and Sherri for their support! I plan to direct the new treasurer we elect to our board next year to Nexus Square to have everything done correctly and in a timely fashion.

Alexa Anderson

Mohamed and his team have been great in helping us navigate taxes with our new business. The team is efficient and pleasant to work with. I look forward to having them handle our taxes as our business grows.

J Hath

I have worked with Mohamed and Nexus Square for two years and I intend to continue working with them. When I started my Animation LLC, the team answered all my questions and were very helpful setting it up. I know that if I have a concern or need an answer to taxes or retirement contributions , Mohamed will contact me with an answer. I enjoy working with Nexus Square and I highly recommend them.

Herman Mendez

As Vice-President and Treasurer for the La Mirada Symphony Association I reached out to NexusSquare to complete the Symphony Association's Federal and State tax filings. I appreciated their attentiveness and timely completion of our fillings. I would recommend their service, in particular to non-profit organizations, as they have expertise with 501c3 organizations. Thank you NexusSquare.

Bethany Michaels

I hired Mohamed to help me with my bookkeeping and I am already floored at how much his company has helped me. I am an entrepreneur at my core, so learning my numbers has always been a challenge for me. That's just not how my mind works. Working with Mohamed, I have felt more confident with my business assets and learning how to read my numbers. He also set me up on payroll. I have limited knowledge with taxes, payroll, and the financial side of business, so honestly he's been a godsend. My books were totally messed up, and with his help, my finances are completely cleaned up, easy to read, and so much more organized! Mohamed and his team are honest, diligent, and work with such integrity. Highly recommend whether you need consulting or just monthly management for your business expenses. Thank you Mohamed for making things so much easier for me! I finally feel free from the stress of the financial side of things.