​One Customer at a time.

Established over 24 years ago, FMS Inc, began operations in the San Gabriel Valley with a small group of founding members, and it now employs many accounting professionals in its Ontario, California location. We perform accounting, bookkeeping and payroll with a focus on business consultations. Our firm is a member of several prestigious organizations. We offer our clients the widest possible range of services of any accounting firm in the area.

Elite Service

FMS Inc is a full service accounting and consulting firm. We cater to a wide variety of clients ranging from individuals to medium-sized corporations. Our staff accountants and partners specialize in accounting, retirement planning, business consulting, estates and trusts, and personal financial planning. In addition to our specialty areas, we also provide tax services, including tax planning and tax return preparation, and bookkeeping.

Trusted Advice

With decades of experience and knowledge, FMS can advise you on even your most difficult business decisions. We can’t choose the wall paint for you, but we can help with business strategy and forecasting to help keep your business in the black. It’s no wonder FMS Accountants was honored with the 2011 Chamber award for “Best Business Advisor”.

Consultations are free. Is it time for professional, friendly help? Let’s get started…