Meet Your Team

About us

Great bookkeepers, business advisors, and tax advisors are key to success

With knowledgeable advisors, the entire FAS team is here to help make life easier for small business owners.
Our team, combined with our streamlined process, helps you save precious time and money and have peace of mind, and that is PRICELESS!

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Cristy Fontanilla

Prior to getting into the business of helping small businesses succeed; Cristy accumulated well over 30 years of management experience in the manufacturing and services industries. With passion, relentless curiosity, and her expertise in risk-based strategies, she was able to propel the operational and financial performance of the companies she worked with forward!

On top of her experiences in the industry, Cristy is also an Enrolled Agent (EA), the highest credential that the Internal Revenue Service (IRS) awards to tax professionals. Cristy is also a QuickBooks Online Certified ProAdvisor.

Cristy is a staunch supporter of small businesses and her community. One of the many notable contributions that she has done for the community was when she held a faculty position at the Houston Community College where she specialized in teaching Financial Statement Workshops and Financial Modules – Money & Metrics to entrepreneurs. The program was made possible by Goldman Sachs 10,000 Small Business Program. She also served as a valued board member of the Katy Area Chamber of Commerce from 2015 to 2021, a non-profit working to strengthen the local economy of the Katy area by advocating for its members and community.

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Dennis Fontanilla

Before going full-time helping small businesses succeed, Dennis spent more than 30 years leading and contributing to the corporate world in various leadership and management roles. Using the knowledge he acquired through years of experience, he is able to provide his clients with the financial and controller expertise that is usually only available to large corporations.

Currently, Dennis oversees and ensures that all of the clients’ financial obligations are met and that they receive the best level of service from FAS.

He achieves this goal through the combination of his dedication to providing top-notch service and his technical financial expertise. Our clients can run their business with the peace of mind that their books are being handled professionally. Dennis is also a QuickBooks Online Certified ProAdvisor.

Our Value Proposition

Why hire FAS?

Partner with us and experience unprecedented level of support for your success as we dedicate all of our expertise and experience to the achievement of your goal!


We use the latest technology to make the process as efficient as possible for you, automating your notifications, reminders, bill payments and tax payments. This keeps your costs down and improves accuracy.


You’re super busy. That’s why we give you plenty of time to respond to our questions and document requests. When you meet our deadline, we will meet the government’s deadlines. We aim to be proactive and will do what we can to keep you accountable to the tax deadlines.


We work in a smarter, more streamlined way. We provide a clear quote, and tell you exactly when things will happen and why. We use the best tools and technology available to save you time, save you money and save you from dealing with IRS.

Power up your business today!

With FAS by your side, you can see your business operating performance on a timely and accurate manner.
With confidence, you can use this financial intelligence to drive your business forward.