In the csv import module the "TAGS" column isn't offert for selection and is also not included in the csv export.
How can that be done?

I have not checked the source code, but according to your description it might very well be that tags are not implemented at all in the current CSV im-/exporter code. In that case usually source code helps If you don't feel like writing source code for whatever reason, please file a wishlist item on our bug tracker so that we don't forget about it to add it at some point in time.

Added to bug tracker!

I like to import my data fom another program.
In this Program I use Tags named "Klasse".
In the "CSV Import Wizard: Banking" I miss a "Tags" field i can select the column number "Klasse".
grntbn Post the same Problem 2018 I think.
Thank you for any answer

For reference, the wishlist is at https://bugs.kde.org/show_bug.cgi?id=401066.
The reason you can't find a tags column in the csv importer is that is simply is not present. The csv importer was written before tags were added to KMyMoney, and it looks like they haven't been added to any of the importers. There is an even older bug filed to add tags to qif import.

The other ones mentioning tags and import are 316951 and 405147.

Thank you all for the fast answers
Post from ostroffjh: .........., and it looks like they haven't been added to any of the importers. (sinse 2013)
It seems, it's maybe a Problem without a fast solution.
KMyMoney looks best for what I will do. So I got a bit work to import all the Tags manually
Pity.....