Marcus Cortellini, CPA

Partner
Rochester, NY

Marcus Cortellini, CPA, has been helping Insero clients achieve their business and financial goals since 2006. He specializes in working with small and closely held businesses, providing tax planning, tax compliance, accounting, and financial reporting services.

Marcus works with both individuals and businesses on a variety of tax matters and serves as a trusted advisor on banking, financing, and business management issues. Drawing on his experience across a wide range of industries and organizations, he helps clients navigate challenges, evaluate opportunities, and make informed decisions that support long-term success.

EDUCATION
St. John Fisher College, Bachelor of Science in Accounting

CERTIFICATIONS
Certified Public Accountant – New York

PROFESSIONAL ORGANIZATIONS
American Institute of Certified Public Accountants (AICPA)
New York State Society of Public Accountants (NYSSCPA)

BOARD/COMMUNITY INVOLVEMENT
Audit Committee Member, Diocese of Rochester
Lay Trustee, St. Mark’s Church
Past Board Member, Small Business Council of Rochester
Past Finance Council Chair St. Mark’s Church