Welcome to Advisian CPA

We believe in empowering business owners to transform challenges into opportunities.

Who we are

Our mission is to provide financial insights and strategies that illuminate the path forward, enabling you to confidently navigate complexities, achieve your goals, and lay a foundation for enduring success.

What we do

We understand that running a business comes with unique financial demands and intricate challenges. That’s why Advisian combines precision, innovation, and a commitment to partnership to redefine the role of a trusted advisor.

How we work

We’re not just here to crunch numbers—we’re here to help you interpret them, plan strategically, and make informed decisions that drive growth.

ADVISIAN pronounced as
“Ad – VI – Zee – uhn”

The name “Advisian” combines the essence of advice, vision, and guardian, symbolizing a firm that goes beyond traditional accounting services to offer strategic insights and foresight for its clients.

It conveys expertise, forward-thinking, and a commitment to guiding business owners through complex financial landscapes with clarity and confidence.

Questions about a financial or tax-related issue?

John J. Cain

CPA | Founder

John J. Cain

With over 30 years of accounting expertise, John J. Cain is a trusted advisor to business owners in Marietta, GA, and beyond. As a Partner at Advisian CPA, John specializes in delivering tailored tax strategies and financial solutions that empower clients to navigate complex challenges and achieve their goals. His commitment to precision, innovation, and personalized service has earned him a reputation for excellence in the field. When he’s not helping clients build lasting success, John enjoys contributing to the local community and exploring the vibrant culture of Marietta.

J. Austin Cain

CPA | Advisor

J. Austin Cain

J. Austin Cain is a dedicated CPA and Associate at Advisian CPA, bringing 5 years of accounting and financial guidance to business owners in Marietta, GA. Known for his innovative approach and attention to detail, Austin specializes in crafting strategic solutions that help clients streamline operations and achieve their financial goals. With a passion for building strong client relationships, he ensures every business he serves receives personalized, forward-thinking advice. Outside of work, Austin enjoys staying connected with his wife Maggie, and their beautiful new baby, Annie.

Chelsea L. Rehrig

CPA | Associate

Chelsea L. Rehrig

Chelsea L. Rehrig is an accomplished CPA and Associate at Advisian CPA, bringing 7 years of accounting expertise to clients in Marietta, GA. Known for her meticulous attention to detail and client-focused approach, Chelsea specializes in delivering tailored tax strategies and financial solutions that help businesses thrive. Outside of work, Chelsea enjoys exploring the Marietta community and staying active in local initiatives.

“Working with John Cain has been an absolute game-changer for our business. His deep expertise and strategic approach helped us easily navigate complex tax issues, turning what felt overwhelming into manageable solutions.”

Mark Shubert • OnSite Installations, Inc.

Redefining Trusted Advisors

We understand that running a business comes with unique financial demands and intricate challenges. That’s why Advisian combines precision, innovation, and a commitment to partnership to redefine the role of a trusted advisor.

We’re not just here to crunch numbers—we’re here to help you interpret them, plan strategically, and make informed decisions that drive growth.

International

Precision

Your business deserves a meticulous approach to accounting and tax strategies. We focus on the details, ensuring accuracy and compliance while uncovering opportunities for optimization.

Partnerships

Innovation

In an ever-changing financial landscape, staying ahead requires forward-thinking solutions. Leveraging the latest tools and methodologies, we craft strategies tailored to your unique needs.

Excellence

Partnership

Success is a journey we undertake together. At Advisian, we build meaningful relationships with our clients, offering guidance and support every step of the way.

Let’s work together

“Take the first step toward lasting financial success—contact us today to get started!”