About PAYG Summaries
The system uses each employee's reporting periods to determine the summaries to generate.
A single summary will be created for each reporting period in the specified tax year with a Period End Date that falls on or before the "process through" date you specify when generating summaries.
If you don't provide a Period End Date for a reporting period, the system uses the specified "through date". For more information, see About the PR PAYG Summary Process Form.