John W. Halloran CPA, P.C.

About

Accounting, tax, and advisory for privately held companies across Long Island and the New York metropolitan area. Build reliable financial operations, make tax decisions before the window closes, and be ready when a lender, external auditor, or buyer puts the numbers under greater scrutiny.

John W. Halloran CPA, P.C. is a second-generation New York CPA firm serving privately held companies across Long Island and the New York metropolitan area. We work with owners and finance leaders when accounting, reporting and controls need to support the next stage of the business—whether growth, financing, an external audit or a sale.

Our services are organized around five capabilities: client accounting services, business tax, audit readiness, transaction advisory and internal audit. We most often serve construction, manufacturing and distribution, real estate, medical and dental practices, professional services and technology companies.

Independent by design, we do not perform external financial-statement audits. This allows us to work hands-on across accounting, readiness and internal controls while a separate CPA firm remains the external auditor.