Employer Cost API - Calculate the true cost-to-employer for any U.S. worker

Employer Cost API calculates the true cost-to-employer for any U.S. worker. It includes employer payroll taxes (Social Security, Medicare, FUTA, SUTA), workers’ comp, employer-paid benefits, retirement match, PTO cost, and full annual and per-period breakdowns. Designed for HR SaaS, payroll tools, finance apps, and startups that need accurate compensation modeling. Simple JSON output, fast responses, and clean developer experience.

Hey Product Hunt! I built Employer Cost API because every time I tried to calculate the real cost of hiring in the U.S., it turned into a mess. Payroll taxes, workers’ comp, benefits, PTO, insurance, retirement match — everything lives in different places, and most tools only focus on take-home pay. This project actually grew out of my previous Salary After Tax API, which calculates take-home pay across all U.S. states. While working on it, I realized there was still no simple, developer-friendly way to get a full employer cost breakdown — so this API became the next step. Right now it returns a clean JSON structure with all major components of employer cost. I’d love feedback on: — the API format (naming, structure, fields) — what data points or cost categories you’d expect — how to make the integration smoother for devs

Employer Cost API - Calculate the true cost-to-employer for any U.S. worker

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