Katie Sierotnik, CPA

Tax Manager

Katie came to Bahn CPA with over fifteen years of experience. Katie’s expertise encompasses all aspects of tax compliance and planning for corporations, S-corporations, partnerships, individuals, and trusts across a multitude of industries.

Her strong background in audit and tax accounting allows her to provide insightful guidance and strategic solutions. She excels at building and maintaining strong client relationships, ensuring clear communication and timely delivery of services.

Katie lives in Upstate New York with her husband and four children. She juggles her time between helping out at her kids’ school, taking care of all the usual mom stuff, and trying her hand at golf when she gets the chance.


Le Moyne College – Bachelor of Science in Accounting

Affiliates and Activities

American Institute of Certified Public Accountants

CPA Designation

License: New York

Karen Bahn, CPA founder of Bahn CPA

Karen Bahn

Tax Partner & Owner

Katie Sierotnik, CPA

Katie Sierotnik

Tax Manager

Alexandra Key

Alexandra Key

Tax Staff and Bookkeeper

Bahn CPA

A Holistic Boutique Virtual Tax Practice

At Bahn CPA, we believe in supporting our clients throughout the year, not just once a year. We believe in supporting you in your journey to safeguard your legacy while continuing to build a brighter future. Remove the feelings of unease and stress surronding your tax planning, tax compliance, and personal financial journey. Instead, replace them with feelings of calm, inspiration, happiness, and expansion.

Tax Compliance

Personal, business, trust, gift, and estate year-round support

Tax Planning

Focusing on business and generational planning, and trust, estate, and gift planning

Personal Financial Education

Working collaboratively with clients to embrace more “yes” moments

Let's Get Started

Our services extend beyond simply filing tax returns. We provide ongoing support throughout the year, answering your tax-related questions and proactively identifying potential opportunities for tax savings.