<prompt> Human: I was hired in April 2015. Im finding out now from my W-2 that I paid 890 in income tax to Massachusetts from April until August, when my employer finally told Trinet that I live in Colorado I work remotely. Ive lived in CO the whole time.Is the solution as simple as filing a non-resident return in MA, saying that all of my income was made out of state and getting a refund? Will they believe me? And then how do I pay Colorado taxes on the income that I made while supposedly living in MA? Thanks in advance.  <response>: File a return with MA and get your money back.File a return with CO and pay them money.Its typically that easy. 