| IRS Tax Help Line for Individuals | (800) 829-1040 | M-F, 7:00 am – 7:00 pm, Local Time |
| Business and Specialty Tax Line | (800) 829-4933 | M-F, 7:00 am – 7:00 pm, Local Time |
| Refund Hotline: (Where’s my Refund?) | (800) 829-1954 | Automated Service is Available 24/7 |
| Forms and Publications | (800) 829-3676 | M-F, 7:00 am – 7:00 pm, Local Time |
| National Taxpayer Advocate Help Line | (877) 777-4778 | M-F, 7:00 am – 7:00 pm, Local Time |
| Telephone Device for the Deaf (TDD): Forms, Tax Help, TAS | (800) 829-4059 | M-F, 7:00 am – 7:00 pm, Local Time |
| Electronic Federal Tax Payment System | (800) 555-4477 | Automated Service is Available 24/7 |
| Tax Exempt and Government Entities (TEGE) Help Line | (877) 829-5500 | M-F, 8:00 am – 5:00 pm, Local Time |
| TeleTax Topics and Refund Status | (800) 829-4477 | Automated Service is Available 24/7 |
| Forms 706 and 709 Help Line | (866) 699-4083 | M-F, 7:00 am – 7:00 pm, Local Time |
| Employer Identification Number (EIN) | (800) 829-4933 | M-F, 7:00 am – 7:00 pm, Local Time |
| Excise Tax and Form 2290 Help Line | (866) 699-4096 | M-F, 8:00 am – 6:00 pm, ET |
| Information Return Reporting | (866) 455-7438 | M-F, 8:30 am – 4:30 pm, ET |
| Disaster or Combat Zone Special Hotline | (866) 562-5227 | M-F, 7:00 am – 7:00 pm, Local Time |
| FBAR and Title 31 Help Line | (866) 270-0733 | M-F, 8:00 am – 4:30 pm, ET |
| IRS IP PIN Line | (800) 908-4490 | M-F, 7:00 am – 7:00 pm, Local Time |
| IRS e-file Payment Services | (888) 353-4537 | M-F, 7:00 am – 7:00 pm, Local Time |
