if it is a grantor trust, you may not want an EIN. For example, if it's a grantor trust and has an investment account using the EIN, you'll have to file an annual grantor trust tax return which requires Turbotax Business. in addition, you'll need a separate app to file the individual's return. if the same account used the taxpayers SSN no return would be required. at such time as the grantor trust terminated and filing a 1041 was required th SS_4 application could be submitted at that time
