Come to think of it, there isn't a lot about payroll on the company's web site and I don't remember it being officially introduced in the United States. The payroll section of Xero's website shows add-on services from ZenPayroll, ADP, Sure Payroll and Monchilla Payroll. Xero Payroll is based on its purchase of the Australian company, Paycycle, in 2011. Five CPE credits are available for those who show up. In the U.S., the New Zealand-based vendor, has moved its headquarters to a larger facility in San Francisco with offices opening in Denver and New York, adding to one already open in Los Angeles.