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| Form 1127 Application for Extension of Time for Payment of Tax Due to Undue Hardship | ![]() |
| Form 2350 Application for Extension of Time to File U.S. Income Tax Return | ![]() |
| Form 4419 Application for Filing Information Returns Electronically (FIRE) | ![]() |
| Form 4868 (SP) Application for Automatic Extension of Time to File U.S. Individual Income Tax Return (Spanish version) | ![]() |
| Form 5558 Application for Extension of Time to File Certain Employee Plan Returns | ![]() |
| Form 8809 Application for Extension of Time to File Information Returns | ![]() |
| Form 8868 Application for Extension of Time To File an Exempt Organization Return | ![]() |
| 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 IRS e-file Signature Authorization | ![]() |
| Form 8879 (SP) IRS e-file Signature Authorization (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-EO IRS e-file Signature Authorization for an Exempt Organization | ![]() |
| Form 8879-EX IRS e-file Signature Authorization for Forms 720, 2290, and 8849 | ![]() |
| 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 | ![]() |
| Form 8892 Application for Automatic Extension of Time To File Form 709 and/or Payment of Gift/Generation-Skipping Transfer Tax | ![]() |
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| Publication 1179 General Rules and Specifications for Substitute Forms 1096, 1098, 1099, 5498, and Certain Other Information Returns | ![]() |
| Publication 1345 Handbook for Authorized IRS e-file Providers of Individual Income Tax Returns | ![]() |
| Publication 3112 IRS e-file Application and Participation | ![]() |
| Publication 3609 Filing Information Returns Electronically for Business e-filers | ![]() |
| Publication 3611 IRS e-file Electronic Payment Options | ![]() |
| Publication 3611 (SP) IRS e-file Electronic Payment Options (Spanish version) | ![]() |
| Publication 4163 Modernized e-File (MeF) Information for Authorized IRS e-file Providers for Business Returns | ![]() |