Resident Alien Type 1: U.S. Citizen Type 2: Green Card Holder Type 3: Passed the Substantial Presence Test and was judged to be an RA. If you already know that you are a Resident Alien, you can use  TurboTax online to  file  taxes , or buy  TurboTax software on Amazon  . Non Resident Alien former five-year student visa holders visiting scholar visa two years ago if not a US citizen, green card holder,  not sure people can read on the following seven steps in the first step , Will use the system to help you figure out what kind of identity you are . Further reading:  IRS: Resident and Nonresident Aliens