The Accounting Clinic, Inc.


Important Information Regarding COVID-19


Due to the continuing situation created by COVID-19 (also known as the Coronavirus), our physical office is still closed until further notice. However, while our door is closed, WE ARE OPEN and hard at work preparing taxes, bookkeeping, checking the mailbox and door-slot as well as reviewing all emails and voicemails. We are available via email ( and phone and may use video-conferencing capabilities when appropriate. Please do not hesitate - contact us to assist with your tax filings and to answer any questions you may have. We look forward to hearing from you and helping you through this uncharted tax season.

Accounting With A Personal Touch


Established by W. Dennis Koski in 1976, the Accounting Clinic is a full-service, family owned and operated accounting firm that works with individuals, partnerships, domestic corporations, non-profit organizations and community associations. 

We have a long-standing history of exceptional professionalism, reliability and customer service. With more than 80 years of combined accounting experience, we have the knowledge necessary to thoroughly analyze each client’s unique situation and produce strategies that minimize tax burden.

We understand the importance of selecting a competent and qualified accountant. We feel confident that you will be thrilled with our services. Please contact us today to schedule an appointment to meet the members of the Accounting Clinic and discuss how we can serve your personal and/or business accounting needs.

And don't forget to visit our Services page, which provides a comprehensive list of the many ways we can help you.


Corporate & Individuals
  • State & Federal Tax Return Preparation for Individuals, Partnerships & Corporations

  • Payroll, Tangible & Sales Tax Return Preparation

  • Electronic Tax Filing for Individuals & Corporations

  • Extensions & Late Filings

  • Tax Planning & Consultation

  • Business Evaluations

  • Small Business Services 

  • Bookkeeping

  • Corporation Formation (all 50 states)

  • IRS Communication & Representation

Non-Profits & Community Associations
  • 990-Series Tax Return Preparation & Review

  • 1120-H Tax Return Preparation & Review

  • Extensions & Late Filings

  • Non-Profit Designation & Formation (IRS Form 1023 & 1024)

  • Bookkeeping

  • Budget Planning, Assistance & Review

  • By-Laws Drafting & Review

  • Corporation Formation (all 50 states)

  • Board of Director Consultations 

  • IRS Communication & Representation 

  • Financial Compilations, Reviews & Audits

Payment Options

We gladly accept American Express, Visa, Master Card, Money Orders, Personal & Corporate Checks, and Cash.




The Accounting Clinic has done wonders with our company taxes. If your company is interested in maximizing tax savings, then look no further. You will not be disappointed! They are family owned and operated - and they care about you and the success of your business. 

CPR Tampa, LLC

Meet The Team


W. Dennis Koski

Senior Accountant

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Dennis founded the Accounting Clinic as a bookkeeping and tax return preparation firm. Since that time, Dennis has dedicated himself to growing the business while consistently providing quality accounting services to his clients. 

Though skilled in all areas of individual, partnership, and corporate accounting, Dennis specializes in helping the owners of small businesses develop individualized strategies that reduce their tax burden.

Dennis has a B.A. in Accounting from Hofstra University.


Peggy Koski


Office Manager

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Peggy joined the Accounting Clinic shortly after marrying Dennis in 1982.  Though Peggy wears many hats at the Accounting Clinic, she currently devotes the majority of her time serving as office manager.

Peggy’s outstanding business practices and focus on client relationships have been instrumental in growing the Accounting Clinic.  Peggy has over 30 years of corporate bookkeeping, sales tax and payroll tax experience. 

Peggy is a registered notary public and holds an IRS CAF Representative number. 

Ryan M. Koski

CPA, Attorney

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Ryan began his career at the Accounting Clinic as a file clerk and has progressively increased his responsibilities.  As Dennis and Peggy's son, Ryan was able to learn firsthand about the accounting industry and can now boast over a decade of practical individual, partnership, and corporate accounting experience. In recent years, Ryan has expanded his expertise to include community associations as well as tax-exempt and nonprofit 501(c)(3) organizations.

Ryan earned his Accounting Degree and Masters of Accountancy from Stetson University.  In 2009, he obtained his Certified Public Accountant (CPA) designation.  In 2012, Ryan earned his law degree from Stetson University College of Law and is currently a member of the Florida Bar Association.     

Jarrett W. Koski

Remote Technical Advisor

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Jarrett began his employment at the Accounting Clinic in 2008 as a file clerk.  Since that time, Jarrett has expanded his responsibilities into the different facets of bookkeeping.

Jarrett graduated from Lees-McRae College with a BFA in Musical Theatre and Education.  He currently works and performs in the Boone, NC area while continuing  to be an active member of the Accounting Clinic.