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Taxpayer Information Lines | Internal Revenue Service

1111 Constitution Ave NW, Washington, DC 20224-0001

All taxpayers, including small business owners and sole proprietors
Mon-Fri 7am-7pm local time by phone
800-829-1040

Voice - Toll-Free for Individuals

English, Spanish

Call or visit website

None for information

AZ

Description

Federal tax collection agency administers the Internal Revenue Code enacted by Congress. Provides information by phone and online to help people understand and meet their tax responsibilities. Website provides forms which can be downloaded, and information about tax return corrections, penalties and penalty relief, refunds, deductions, and credits (Earned Income Tax Credit, education, child care, adoption, Saver's Credit, Welfare-to-Work, and Work Opportunity Tax Credit). Also provides answers to frequently asked questions for individuals, businesses, and nonprofits.

Last Assured

10/01/2025

Providing organization

Internal Revenue Service

Federal tax collection agency administers the Internal Revenue Code enacted by Congress. Provides information by phone and online to help people understand and meet their tax responsibilities. Website provides forms which can be downloaded, and information about tax return corrections, penalties and penalty relief, refunds, deductions, and credits (Earned Income Tax Credit, education, child care, adoption, Saver's Credit, Welfare-to-Work, and Work Opportunity Tax Credit). Also provides answers to frequently asked questions for individuals, businesses, and nonprofits.