If you saw their countdown, you will know they are seventeen and a half, and a week or two and counting. They were born in June 1986.
Yes U2 pay no income tax in Ireland because they are artists. Ditch diggers, toilet scrubbers in Ireland pay taxes, rock stars, artists and actors do not. If they are taxed on the stuff they do in the US, I don't know. I'm not into finance. That's why they have Paul McGuiness. I think they do have to pay property taxes on their homes in Dublin though, and their cars. However, not paying personal income tax is a HUGE advantage to Irish stars, considering most American, British and other citizens lose 50-90% of their earnings to their govenment and U2 does not.