Our Team: Here For You

Erin Barry_CPA

Erin Barry, CPA

Founder / Owner

In 2014, Erin Barry founded Simply Taxes with a focus on providing cost-effective, high-quality tax preparation services. Since then, the firm has grown to provide bookkeeping, payroll and other financial services as well.

After serving in the United States Marine Corps for four years, Erin went on to earn her Bachelor’s Degree in Accountancy. She has over 20 years of experience in accounting and she earned her CPA in 2008. Currently, Erin is a valued member of the American Institute of Certified Public Accountants (AICPA) and the Arizona Society of CPAs.

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Emmily Guillermo

Executive Assistant

A young student of the field, Emmily Guillermo is currently enrolled in ASU Online, pursuing a degree in Accounting. Starting with Simply Taxes in 2018, Emmily is eager to grow as Executive Assistant, applying her skills and love of knowledge with the company. She currently assists with tax preparation, bookkeeping, social media, and is working on the blog! She is currently enjoying her work with Simply Taxes, playing with her dog, Mazie, and reading when she gets the chance.

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McKenna Vadney

Customer Relations

Born and raised in Arizona, and a graduate of ASU, McKenna has found a passion in Customer Communication through working closely with several small local Phoenix businesses since her adolescence. Joining the Simply Taxes team in the Spring of 2020, McKenna hopes to use her experience in Customer Relations and Communication to foster a lasting relationship between our Firm and our members of the community. In her free time, she enjoys some outdoor activities, but mostly watching comedy shows such as Arrested Development or true crime podcasts and being a mom to her elderly cat and numerous plants.


Connie Cornwell


Connie Cornwell is a seasoned accountant with over 37 years of experience. Connie earned her Bachelor’s of Science degree in Accounting. She worked for Safeway for 33 years in accounting in many different capacities and several different departments. While at Safeway some of her major accomplishments where coordinated and directed the reduction of accounts receivable posting from $400M to $59M for a $2 plus billion pharmacy operation. As well as increasing payment processing by 22 percent, while maintaining quality through more efficient electronic processing procedures. She then retired from Safeway to become the current co-owner and accountant for Pete Nelson Automotive Repair. She currently assists Erin part time in accounting functions.