I'm from Italy, most machines that take cash straight up don't accept 1 and 2 cent coins and 500€ notes anymore, they'll just spit them out. I don't think I've ever paid a cashier with those, so I don't know what the policy is, but I think they are allowed to refuse them. It's still legal tender so banks will take them; I have a big jar at home where I collect all the small cents, I plan to take it to a bank once it's full and see what I can buy with it (stonks). I can tell you that if you make an electronic payment you will pay the exact price, but if you're paying in cash it will be rounded to the nearest .05.