org-export-with-tags

org-export-with-tags is a variable defined in `ox.el'.
Its value is

t

Documentation:
If nil, do not export tags, just remove them from headlines.

If this is the symbol `not-in-toc', tags will be removed from
table of contents entries, but still be shown in the headlines of
the document.

This option can also be set with the OPTIONS keyword,
e.g. "tags:nil".

You can customize this variable.