Master Accounting and Tax Service, LLC (MATS) strives to provide the client with quality accounting, tax, bookkeeping, and business services at an affordable cost and with the utmost integrity. We work with small businesses and enterprise-level companies all over the metropolitan Phoenix area.

We are working toward becoming a “paperless office” as well as an internet-based company. We offer our clients the convenience of dealing with us strictly online. We provide all of our clients with a secure, encrypted web portal to always have all historical tax documents at their fingertips and to provide them with a secure means to transfer information to us or receive information from us.

The owner, Bill, brings a rare level of tax expertise to the table for clients; he has been a practicing accountant for over 25 years, working for government agencies as an auditor, businesses as a staff accountant, an assistant controller and controller. In 2004, Bill established MATS and operates his growing accounting and tax practice in Tempe.

  • 18+ years experience in taxes and payroll
  • A+ BBB Business Review Rating
  • Experienced government tax auditor
  • Staff consultant for businesses
  • Secure and encrypted online capabilities
  • Registered tax return preparer and Valid PTIN holder

“The job of a tax accountant is to protect their client by ensuring that the client is taking advantage of all available tax-saving opportunities as well as paying only their share of tax liability by preparing an accurate and honest tax return.”Owner, Bill Mease

 Honesty and Integrity – It is of utmost importance that we provide all of our services in an ethical and fair manner.
 Quality – We strive to provide the highest quality service possible to our clients that will meet or exceed their expectations.
 Professionalism and Knowledge – We are continually learning and growing in order to provide our clients with the most current tax law and advice.
 Dignity and Respect – We treat every client with dignity and respect.