VertiSource HR Corporate Office

VertiSource HR is a full-service professional employer organization based in Cottonwood Heights, Utah, that takes on payroll, benefits administration, workers' compensation, and HR compliance for employers across all 50 states. For small and mid-size businesses that need dependable HR outsourcing without building an internal department, VertiSource operates as a fully staffed back-office partner, running everything from multi-state tax filings to open enrollment to employee relations. The core offering is full-service PEO delivered through ISHR, LLC, a professional employer organization licensed by the Utah Insurance Department. That covers multi-state payroll processing, group benefits sourcing and enrollment, workers' comp administration, ACA compliance, and day-to-day HR support. The company has expanded its service footprint over the years: the Axiom team handles bookkeeping, tax preparation, and QuickBooks work for clients who want their financials managed under one roof. A partnership with ZayZoon gives worksite employees access to earned wages before payday, a practical benefit for hourly workforces managing cash flow between pay periods. VertiSource is also an IIG-affiliated insurance broker, so clients can shop commercial coverage through the same relationship rather than managing a separate one. The numbers behind the operation are concrete. More than 500 companies have their payroll and HR managed through VertiSource, representing over 15,000 worksite employees and approximately $900 million in payroll processed annually. A 96% client retention rate is one indicator of service consistency. Another is that the original clients from the company's founding year in 2007 are still on the platform today, having stayed through two recessions, a pandemic, and the ACA rollout. Two offices support operations. The Utah headquarters in Cottonwood Heights handles payroll processing, workers' comp claims, tax administration, and the Axiom bookkeeping team. A West Coast office in Costa Mesa, California, opened in 2011, focuses on client success and benefits enrollment for California and Pacific-time clients, with direct lines into the Utah payroll and compliance team. Every account is assigned a dedicated specialist team with direct contact lines rather than a general queue, and the same specialists stay on an account year to year. Businesses evaluating HR outsourcing, employer of record arrangements, or a more accountable back-office partner can reach VertiSource through their website to discuss payroll footprint and service fit.