Form 8453 (SP) U.S. Individual Income Tax Declaration for an IRS e-file Return (Spanish version)

Form 8453-B U.S. Electing Large Partnership Declaration for an IRS e-file Return

Form 8453-C U.S. Corporation Income Tax Declaration for an IRS e-file Return

Form 8453-EO Exempt Organization Declaration and Signature for Electronic Filing

Form 8453-F U.S. Estate or Trust Income Tax Declaration and Signature for Electronic Filing

Form 8453-PE U.S. Partnership Declaration for an IRS e-file Return

Form 8453-S U.S. S Corporation Income Tax Declaration for an IRS e-file Return

Form 8453-X Political Organization Declaration for Electronic Filing of Notice of Section 527 Status

Form 8878 IRS e-file Signature Authorization for Form 4868 or Form 2350

Form 8878 (SP) IRS e-file Signature Authorization for Application for Extension of Time to File Form 4868 (SP) or Form 2350 (SP) (Spanish version)

Form 8879-B IRS e-file Signature Authorization for Form 1065-B

Form 8879-C IRS e-file Signature Authorization for Form 1120

Form 8879-F IRS e-file Signature Authorization for Form 1041

Form 8879-I IRS e-file Signature Authorization for Form 1120-F

Form 8879-PE IRS e-file Signature Authorization for Form 1065

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