Guild Wars 2

I’m thinking about rerolling a on different server with a friend (FR) because he doesn’t speak english. However I have a lv 80 Elementalist with with lot of gold and karma points. Loosing the Elementalist isn’t a real issue. What I’m looking forward is not loosing all the gold and karma. If I delete the only character available on my account. While I loose every currency acquired?

No, your wallet will stay intact. So all that is in there will move with you.

But any soulbound items will become useless.

SandraSolace.7682:

….
But any soulbound items will become useless.

You should salvage what you can and store everything in bank (including storage bags) before deleting the character