I'm in the midst of the Kafka-esque leaving process, and have in hand an attestastion de départ, and have submitted the formulaire de départ in hopes of getting a bordereaux dimpôts (after we pay our taxes up to the day of departure for this year)

But what's the end point? What is the final paperwork called that we are trying to get?

Who do we then give this magical document to?

Many thanks for help