1-2-3 Payroll is a New York payroll and employer services company based in Holtsville, NY. The company provides integrated payroll and human resources solutions for small businesses, with services focused on simplifying payroll workflows and supporting day-to-day employer administration.

Its listed capabilities include payroll processing, payroll services, payroll setup, and payroll tax compliance. Source materials also describe HR management solutions, time and labor management, benefits administration, automatic deductions, and a self-serve employee portal. The company presents its services as flexible payroll automation designed to help businesses manage payroll from any device and coordinate related HR tasks.