So I am unclear on this. In Germany or the US, if you rob a bank, hide the money, get arrested, and serve a X year sentence, what happens when you are released?

So I am unclear on this. In Germany or the US, if you rob a bank, hide the money, get arrested, and serve a X year sentence, what happens when you are released? Could you use the money? You have already served for the crime. I suppose they could keep some criminal charges in reserve? If nothing else, eventually the statute of limitations would kick in where the money is fair game? Just be sure to declare it on your taxes, lest they get you like Capone.