Hi, your taxes are going to a lot of civil society functions that you can access, the big one, of course, is the NHS, and, in the larger scheme, nationwide security. If you're here on a work permit for a short time, then you can claim taxes back. If you're here for longer than 4 years, then you can get an ILR, which opens the door to public funds. So you could think of it like a CD account - you put the money in for four years, and then you can get it back (sort of!).