If I understand your question, you are using TurboTax, have completed the federal return and are now ready to do the state returns, and your son is required to submit returns for both states he worked in. Depending on whether you are using the online version or you subscribe to the download version of the program, I think most T-Tax customers using the latter get one free state return along with the federal return and you need to *purchase* any additional states. The procedure may vary slightly, depending on your son's residency or non-residency status in either of the two states during the tax year, as to which one you do first, but I have found T-Tax, in my case, very helpful in guiding me through this. (I receive regular income from two states but am a full-time resident of one and a non-resident of the other.) If you treat this as one overall project; i.e., create one, single tax file for the tax year, you will have the best and easiest result. T-tax will properly guide you through the first state, transferring all necessary data from the federal return, as you probably already know, then will transfer all of the necessary data to the second state. It will also ask you a number of questions to deal with differences in how the states tax individuals as to their residency and give you allowable credit for the tax paid to each state. At the end of the process, you will have the option to efile or print/mail all three returns or any combination of efiling or mailing you choose.
