When you file a joint return and filed a joint return the previous year, then you will use the AGI for the previous year when you efile your return. In some cases, putting in zero for the AGI works. You can also work around the question by answering that you did not file last year and that eliminates the AGI question entirely.
If a previous return had been amended, then the AGI on the database will be set back to zero and you will need to enter zero for the AGI to efile.
