ExpressExtension Support

Do I need last year's AGI to e-file my extension Form 4868?

Yes, the IRS requires your previous year's Adjusted Gross Income (AGI) to e-file Form 4868 as a form of identification. It is not required if you are mailing your extension.

An incorrect AGI can result in your tax extension being rejected by the IRS or state tax agency. To learn how to find your previous year's AGI, click here.