This interview will help you determine which form you should use to file your taxes.
If you file electronically, the tax preparation software will determine which form you should use.
All income documents.
Your age, your spouse’s age, and filing status.
Federal income tax withheld.
The tool is designed for taxpayers who were U.S. citizens or resident aliens for the entire tax year for which they’re inquiring. If married, the spouse must also have been a U.S. citizen or resident alien for the entire tax year. For information about nonresidents or dual-status aliens, please see International Taxpayers.