What do you think a "good accountant" does?  Most answers include nothing more than preparing necessary tax returns once a year and sending them to you for signature.  However, we want you to raise your expectations!

We are a unique Tucson, Arizona CPA firm that focuses on providing comprehensive accounting and tax services to meet the needs of small business owners by providing relevant advice on more than just tax issues. 

You and your small business need to make decisions more than once a year. Looking at the history of your business is nice, but how about planning for the future of your business? How about proactive advice and guidance along the way to help you make informed decisions?

Jansen & Company CPAs is licensed in Arizona. All of our CPAs hold valid Arizona CPA certificates.

Meet Our Staff:

Group photo

Mikala Jansen, CPA

Mikala Jansen, CPAWith a background in psychology and estate planning, Mikala began her accounting career with the firm in 2006 and became a CPA in 2010.  She thrives on building trusted relationships with clients and making complex tax code and accounting issues understandable. She especially enjoys working with clients to plan for the future, with the goal of producing timely, meaningful data for making smart decisions. 

Mikala is the managing partner of Jansen & Company CPAs.  She and her husband, Aaron, cherish spending time with their three children enjoying the outdoors, as well as reading, making music, and creating art projects.

Email:  mjansen@jansencpa.com

Harvey Jansen, CPA

Harvey Jansen, CPAHarvey has served the Tucson community in public accounting since 1974, and began his own accounting practice in 1993.  Harvey specializes in knowledge of tax law and its application to individuals and small businesses.  He also has extensive experience working with complex trusts and estates.  His community interests have included fundraising for the Send-a-Kid to Camp Program, serving as an elder and choir director at his church, and playing an instrumental role in the establishment of Desert Christian Schools.  He is currently semi-retired but remains available to serve clients.

E-mail: hjansen@jansencpa.com

Martha J. Quiros, CPA

"MarthaBorn in Ohio, and transplanted to Tucson as a young child, Martha graduated summa cum laude from the University of Arizona in 1991 with degrees in accounting and finance.  After over a decade in private industry, Martha began her career in public accounting.  Martha works with individuals and small, closely-held businesses, and has extensive experience with complex trust and estate matters. 

E-mail: mquiros@jansencpa.com

Matt Hauger, CPA

Harvey Jansen, CPA

Matt moved to Tucson and joined the Jansen & Company CPAs team in 2018.  Matt's favorite class in high school was accounting, and after many years of working in Higher Education Administration, Matt went back to school and earned an MBA in 2014, began a new career in tax and accounting, and became a CPA in 2017.  He enjoys working on tax returns and various kinds of accounting projects and loves to chat with clients to help them understand all sorts of tax and accounting issues.  Matt lives in Tucson with his wife Mary (University of Arizona graduate, 1992), and their three children.  In his spare time, he likes to play guitar, read old dusty books, and spend time with his family and their three dogs.

E-mail:  mhauger@jansencpa.com

Kevin Decker

Kevin Decker

Kevin joined the firm in 2020 after mostly working in the private accounting industry. He received his bachelor's degree in accounting from Western Michigan University and recently obtained his master's degree in professional accounting from Syracuse University. In his free time, he enjoys hanging out with his wife Laura, stepson Bobby and boxer dogs Homer and Stella.

Vedrana (Vee) Grbic, EA


Vedrana (“Vee”) originally became interested & launched her career in public accounting while helping her father’s electrical business. This experience began her true passion for helping business & individual clients alike and focusing on communicating in a meaning full way so they understand their situation.  Her services are customized and range across tax preparation, IRS representation, tax research, accounting, software (QuickBooks) support, and more.  Vee graduated with a Bachelor’s degree in business at the University of Central Florida in 2010 and obtained her Enrolled Agent license in 2016.  In her spare time, she enjoys exploring the beautiful nature Arizona has to offer with her Husky, Zima.

E-mail: vgrbic@jansencpa.com

Beleah Slota

Beleah Slota

Beleah joined the firm in 2019 after 35 years in the medical field.  She manages our front office and is typically the first person to greet clients by phone or in the office.  Beleah assists the CPA office staff with tax returns and accounting projects and continues to expand her knowledge in order to help our clients better.  Beleah and her husband moved to Tucson in 2018.  In her spare time, she loves to quilt and garden....

E-mail: bslota@jansencpa.com

Judy Poll
Administrative Assistant/Bookkeeper

Judy Poll

Judy moved to Tucson and joined the firm as an administrative assistant/bookkeeper in 2020 after 28 years as the summer camp registrar for a Christian Camp in Michigan. She assembles tax returns, financial statements and assists with bookkeeping. In her spare time, Judy and her husband love spending time with their 3 grandkids. She also loves knitting, either by hand or with one of her 4 knitting machines.

Brittan Foster

Brittan Foster

Brittan joined the firm in 2021 with over 10 years in the financial services industry where she discovered her interest in the accounting field. She prepares tax returns for individuals and small businesses, accounting and software program setup (i.e. QuickBooks), and is studying for her Enrolled Agent license. She is a University of Arizona graduate and spends her spare time with her children Charlotte, Harrison, and Audrey, and enjoys painting, traveling, and playing fetch with their three pups.

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