The most of banks see it as a business with higher risk. They accept it, but there is stronger scrutiny over it. So they will ask you to provide very detailed accounts (although there is no tax, you have to have accounts) and they will try to check if there is no sign of money laundering. They usualy ask to provide accounts at least once every year. Be prepared for a higher fees. They will asses your business as one with a higher risk, so they will ask for a very high fees for everything. If you plan to do just some small trading, banking︀ fees can ruin this business. So plan in advance..