I’ve used Thank-You Payroll for almost 10 years. It has done a great job as my team has grown. And whenever I have a curly question or get stuck with something, their customer support is excellent - available by phone or email. The integration with Xero is nice and smooth. The invoice gets pushed to Xero while keeping payroll data anonymized, so people with Xero access but not payroll access only see payroll totals not individual staff amounts.