Review and mark an OSS return as submitted

OSS Returns separates setting up OSS reporting from reviewing and finalising a quarterly return.

Set up and review

1. Open OSS Returns.
2. If OSS has not been configured, use Set up OSS returns to open setup.
3. For an available return, use Review to open its lines.
4. Check the quarter and figures before using Mark as submitted.

Setup saves company OSS settings. Mark as submitted is a separate action: Cybooks refuses to finalise a quarter that is still open and rebuilds the return lines before finalising. A non-zero total OSS VAT amount produces a liability journal after the quarter ends.

Opening the list or review does not submit anything to a tax portal. Record submission only after the external filing has been completed. If finalisation is unavailable, check both the quarter end and your update access.