Hi Earl,
Thanks for your response however, the core issue here is that payments such as Reimbursements and Wage Advances are recorded under the Wages Category (which is the only option) however, these are not Wages - there should be another category available such as 'Other Payments' so that they are not confused with being wages.
When a Payroll Activity report is generated from MYOB, the wages column shouldn't show these amounts as they do not form part of an employee's wages.
The Payroll Activity report should be able to match the amounts in the STP report.
Hope this clarifies the issue.
Thanks