Virtual CPA firm in Tustin, CA

If you’re feeling bogged down by the tedious, yet necessary, accounting tasks that every business faces, Cornerstone CPA is here for you. We understand that you don’t have time to learn how to be an accountant in addition to running your business. That’s why our capable team is here and ready to apply our years of experience to your accounting needs. With us handling your accounting and bookkeeping, you'll be free to allocate your time where it counts most – to making sure your business runs smoothly. You can count on us as your reliable Tustin, CA CPA firm.

We do more than manage “the books”. The goal of our team is to make your life easier by seeking the best growth opportunities and profit maximizing strategies for you. When it comes to tax planning, we’re here with the answers you need to help minimize your business’ tax burden and maximize your profits.

Don’t stress over crunching the numbers! Give yourself a break and let us do it for you. Call 714-505-1925 today to request your free consultation to get started.

Industries We Serve


Commercial builders, small contractors, and local tradesman control costs and minimize tax obligations when we manage their accounting and bookkeeping.


We develop franchise accounting solutions to show retail, hotel, and restaurant franchises how to better monitor expenses and cut costs.


Our CPA firm is experienced in accounting services for various nonprofit organizations including churches, charities, and membership organizations.


Busy restaurant and bar owners can stay focused on serving customers while we oversee their accounting and bookkeeping functions.

CPA QuickBooks Onine ProAdvisor
Envelope Envelope

Sign up for our email newsletter today

Sign Up Chevron icon