What are the 4 types of payroll systems?

The four main types are: in-house manual processing (spreadsheets and manual calculations), desktop payroll software (installed locally, requires manual updates for regulatory changes), cloud-based payroll software (online, updates automatically, accessible from anywhere), and outsourced payroll services (a third-party provider manages payroll on your behalf). For most growing Singapore businesses, cloud-based payroll software offers the best balance of control, accuracy, and compliance automation.