Employer Cost API

Employer Cost API calculates the true cost-to-employer for any U.S. worker, covering payroll taxes (Social Security, Medicare, FUTA, SUTA), workers’ comp, employer-paid benefits, retirement match, and PTO costs, with full annual and per-period breakdowns. It provides a simple JSON output, designed for HR SaaS, payroll tools, and finance apps needing accurate compensation modeling. This API evolved from the Salary After Tax API to offer a comprehensive employer cost breakdown, addressing the lack of developer-friendly tools for this purpose.