[header] How to contact the irs [title] Call the toll-free irs telephone number for individuals if you are calling about a personal tax matter. [step] This number is 1-800-829-1040. The business hours are between 7:00 a.m. and 7:00 p.m. in your local time zone. 
[title] Use the 1-800-829-3676 number for assistance completing your tax forms. [step] This number is the quickest way to get in touch with a specialist trained to assist you in filling out your return forms.