NOTE: Support for Checkmark Canada Desktop Payroll for Mac (pre 10.5) will end in December, 2017.
Click your Operating System to download the latest version of Canadian Payroll
Canada Payroll for Windows 4.0.1
Canada Payroll for Mac 4.0.1
Please note: You need to have version 4.0.0 or later of Checkmark Canada Desktop Payroll already installed to run any patch.