To file as Qualifying Surviving Spouse, in most cases, you have to have a child who lived in your home all year and who you could claim as a dependent (whether or not you actually claimed the child). If you have a child and you're not sure whether the child meets the requirements for QSS, post more details.
If you go through the Personal Info or Your Info section of TurboTax it will ask you questions to determine whether you can file as QSS.
If you can file as QSS, in most cases you will get a larger refund.
