autograt

Shortened auto- +‎ gratuity.

autograt (plural autograts)

1. (informal, rare) A gratuity automatically added to a bill.
   • 1998, hilary gorman, “Opinions on tipping situation”, in phl.food (Usenet):

     You should still get a good tip without the autograt if your customers are civilized people, and your work is good!

   • 2006, Kevrob, “...and i won't eat at THAT place any more...”, in rec.arts.sf.fandom (Usenet):

     I'd also dislike the change to the "autograt", because mandatory service charges are usually subject to sales tax, while tips are not, so I'd actually wind up paying more, even if I would have tipped 20% anyway.

• autogratuity