Form 8879-S, IRS e-file Signature Authorization for Form 1120S

A corporate officer and an electronic return originator (ERO) use this form when the corporate officer wants to:

Form 8879-S

All Form 8879-S Revisions

• use a personal identification number (PIN) to electronically sign an S corporation’s electronic income tax return and, if applicable, 
• consent to electronic funds withdrawal.