I just finished doing my taxes today. Thanks to doing a UROP this past summer, rather than a job at a company, I owed... exactly zero. That's right - I'm getting back ALL of my withholdings. You should not read from this "I should get a UROP to avoid paying taxes". You should instead read "Wow, UROP pay sucks".
(Insert diatribe about how MIT should pay its UROPs at a wage equivalent to what their skills would be worth elsewhere.)
This summer, I'm hopefully going to work part-time and spend the month of July traveling around Germany. More about that later.