Sunny Kostecka, CPA


Sunny joined the Firm in 2002, starting out in our internship program. Sunny specializes in individual and partnership taxation, serving many of the firm’s business clients and high net worth families. Having developed the firm’s performance management program and serving as a current member of the firm’s executive committee, Sunny helps to guide the overall direction of the firm with her valuable insights and creative thinking.

Sunny is a member of the AICPA, IL CPA Society, and is active in the Frankfort Chamber of Commerce.

Having two sons active in sports, Sunny has become quite the amateur baseball and football enthusiast!  When not in the stands, you’ll likely find Sunny riding the waves on one of her annual family lake vacations.

 Areas of Expertise:

  • Partnership Taxation
  • Business Consulting
  • Private Client Services
  • Paycheck Protection Program (PPP)
  • Employee Retention Credit (ERC)

Our partners and staff are committed to quality, it is the cornerstone of everything we do. We take pride in establishing long-lasting client relationships and receiving new client
referrals. We are known for innovative thinking and accuracy; our answers are creative, well researched, and correct.


We are proactive in our approach and bring a wealth of expertise to each client relationship. Because most of our partners are also teachers, having taught at local universities or professional societies and various forums, we are up to date on tax law issues and we bring the most current information to each engagement.


We take pride in our availability. We are there for our clients, in person and when and where they need us. Because the engagement team remains the same, you will talk to someone who knows your individual situation and understands your concerns each time you call. Our partners are ultimately involved in all aspects of each engagement and do not merely act as figurehead leaders.


Because we are a medium-sized firm, we take pride in our ability to tailor our services to meet your specific needs. We recognize that each engagement is unique and we thoroughly investigate each situation to provide a customized approach.

Talk to Sunny