Each time an STP file is sent to the ATO, the file contains the latest Year To Date (YTD) totals for each employee. It does not report the amounts for that particular payslip.
So in effect each STP file submitted with the ATO, overwrites the data held for each employee from previous STP files with the latest YTD total for each employee.
When payslip errors are identified after the STP file has been submitted, the first step is to ensure that payslips are corrected in Easy Payslip. This will then ensure that the YTD are correct for when the next STP file is submitted with the ATO, as this will then update and correct the amounts recorded in the ATO systems.
Easy Payslip does not enable you to edit Payslips after they have been saved and sent, as this has the potential to result in inaccurate YTD totals going forward. Therefore, in order to make any corrections, the payslips need be deleted, and then re-entered. When the corrected payslip has been saved and sent, the YTD values will then also be correctly updated.
This means that the most recent completed STP file is the most accurate, in terms of the data held by the ATO.
Payslips can be deleting by running the Payslips Report. Instructions can be found here.
If you have STP files in the ‘Outstanding’ screen from previous periods, they will most likely contain old YTD totals and so do not need to be re-submitted. Easy Payslip will soon have a feature that lets you remove these files from the STP 'to be lodged' screen by swiping across the file from right to left for app users, or by clicking the bin for website users.