PrimePay, LLC is a major national human capital management technology and services provider founded in 1986, headquartered in West Chester, Pennsylvania, delivering cloud-based payroll, tax, time and attendance, benefits administration, and HR software to businesses ranging from 1 to 5,000 employees. PrimePay announced a strategic merger with CoAdvantage (closed mid-2025); the brands continue to operate separately, with PrimePay now a business unit of CoAdvantage and also offering a PEO option through CoAdvantage.