What does back date mean?

back date meaning in Law Dictionary

The date on a document which retroactive. AKA ante day. It's the reverse of post-date.

back date meaning in Business Dictionary

up to now an understanding, check, draft, or just about any other document ahead of the time it absolutely was really used or signed, rendering it retroactively efficient. Ante-dating just isn't an illegal work, it neither invalidates an instrument nor affects its negotiability. Also called ante date. Contrary of post-date.