The F-1A is a convenience that the PDC offers for F-1 filers who mail reports.  The F-1A may be used to fulfill the annual filing requirement three out of four consecutive years, provided the filer has filed a full F-1 within the last four years and there are no changes or only minor changes to the information on the full report.

Efilers simply review their saved information, make any necessary edits, and submit the report, without thinking about which form they should use.