Mark Bemis
Founder and Managing Partner
Our Story
FinSouthern was founded by Mark Bemis, a seasoned CPA with over 30 years of experience helping businesses thrive. Drawing on a deep understanding of the financial challenges faced by small and medium-sized businesses across the U.S., FinSouthern delivers tax preparation, AI-driven accounting, and cost-saving strategies that make a measurable impact.
We combine Southern trust with modern efficiency, serving clients from regional manufacturers to hospitality groups, always with the goal of simplifying finances and empowering business owners to focus on growth, not numbers. At FinSouthern, we believe in financial clarity delivered with the warmth of a neighbor’s handshake.
Mission and Vision
At FinSouthern, our mission is to empower small and medium-sized businesses with expert tax preparation, intelligent accounting solutions, and strategic cost-saving insights, delivered with the integrity of Southern values and the precision of modern technology. We simplify financial management so owners can stay focused on what matters most: growing their business.
Our vision is to be the trusted financial partner small businesses turn to, blending advanced technology with personalized, relationship-driven service to help owners grow, adapt, and confidently embrace emerging opportunities like digital assets.
Our Approach
At FinSouthern, we believe every client deserves more than a generic service, they deserve a trusted financial partner. That’s why we start with a personalized onboarding experience to understand your goals, challenges, and financial landscape. From day one, our services are tailored to align with your vision and support your next stage of growth.
We will Grow with you
Our services are built to grow with you. Whether you're just starting out or scaling up, FinSouthern offers flexible, right-sized solutions, from tax prep and payroll to forecasting and digital asset strategy—so you can lead with confidence.
Trust
We combine modern tools with Southern trust, delivering clarity, consistency, and the kind of service that feels like a handshake from a neighbor who knows your name.
Clear and Transparent
Clear, transparent communication is at the heart of every relationship. You’ll always know where things stand, what we’re working on, and how it impacts your bottom line. We simplify financial reporting and tax compliance with straightforward explanations, actionable insights, and direct access to our team when you need it.
Proven Expertise
Over 30 years of CPA experience helping businesses grow revenue and streamline operations.
Precision Tax Services
Expert tax preparation tailored to maximize savings and compliance.
Smarter Accounting
AI-driven cloud systems that cut operating expenses by 10–20%.
Results-Focused Strategy
Actionable KPIs that align finances with business goals.
Scalable Growth Support
Trusted guidance in securing equity and debt financing.
Rooted in Trust
Modern financial tools delivered with the warmth of a Southern handshake.
Mark Bemis
Founder and Managing Partner
At FinSouthern, Mark Bemis, CPA, leverages over 30 years of accounting expertise, including Big Four and CFO roles, to deliver AI-driven financial clarity and growth strategies for small and medium sized businesses. From transforming businesses to launching start-ups, he empowers clients across the south. Based in Lake Oconee, Mark enjoys exploring Georgia with his wife, cycling, and golf.
Tyler Avera
Founder & Partner
Before joining FinSouthern, he served in key finance roles—including Controller—where he led operations and implemented systems that supported sustainable growth. At FinSouthern, Tyler specializes in financial consulting and advisory services for small businesses, combining data-driven insights with strong client relationships. Outside of work, he enjoys playing guitar, golfing, and spending pool days with his growing family.
Kathleen Culhane
Chief Operating Officer
With over 20 years of experience, Kathleen Culhane is a seasoned business owner and COO who specializes in scaling startups and growth-stage companies in the professional services sector. She excels at streamlining operations, building infrastructure, and driving sustainable growth. Outside of work, Kathleen enjoys tennis, reading, beach getaways, and golfing with her husband.
Ready to elevate your
financial management?