If I have a visa for 20 days and I extend my stay, what are the legal implications to me and my sponsor?
Upvote:7
It depends on how you got your visa.
You may have to pay a fine when you leave, and it will become much harder to get any future visa.
What happens to your sponsor depends on how he sponsored you. In Germany there is something called a VerpflichtungserklΓ€rung which is a promise by the sponsor to reimburse the German state for all costs of your overstay and removal. If he signed that, they'll demand that cost. If he hat to put down a deposit, the cost is not limited to the deposit.
If you qualified for a visa without a VerpflichtungserklΓ€rung this does not apply.