IRS Corporate Phone Number

In order to contact IRS Corporate Office (Headquarters), you need to call the following Phone Number: 800-829-1040

If you need to contact the Internal Revenue Service (IRS) Corporate Office or reach the IRS Headquarters for any official reason, you can do so by calling the main IRS Corporate Phone Number: 800-829-1040. This is the official IRS contact number for general inquiries related to federal tax returns, IRS notices, payment issues, business taxes, and more.

The IRS corporate headquarters handles a wide range of taxpayer services and departments, including individual and business tax account services, refund status updates, tax law questions, identity verification, and other critical federal tax-related issues. Whether you are a taxpayer, accountant, tax attorney, or business owner, this is the most reliable phone number to reach the IRS central office.

Please note that IRS customer service representatives are available during specific hours, so it is advisable to call early in the day or midweek for shorter wait times. Be prepared with your Social Security Number, any relevant tax documents, or notice reference numbers when calling to help streamline your inquiry.

IRS Jobs Website

IRS Human Resources Phone Number

What are IRS Office Hours? IRS Office Hours

The official IRS office hours typically begin at 10:00 AM and continue through 5:00 PM, Monday through Friday. During these business hours, all main departments within the Internal Revenue Service—including taxpayer assistance, customer service, finance, collections, audits, legal, compliance, and administrative offices—are open and operational.

If you need to speak with an IRS representative, submit documentation, ask about the status of your refund, resolve a tax notice, or address any other federal tax issue, it is recommended to contact the IRS during these core business hours. Calling outside of these hours may result in automated messages, delays in response, or limited access to live agents.

While the main IRS corporate office follows these standard hours, regional offices, field branches, or taxpayer assistance centers (TACs) may operate on slightly different schedules. To ensure prompt service, it is best to call the IRS early in the day, ideally between 10:00 AM and 11:30 AM, as wait times are often shorter.

When Was IRS Founded?

The Internal Revenue Service (IRS) was officially founded in the year 1862, making it one of the oldest government agencies in the United States. Established by President Abraham Lincoln during the Civil War, the IRS was originally created to fund war expenses through the collection of federal income taxes. Since then, the agency has grown into the primary arm of the U.S. Department of the Treasury responsible for tax collection and enforcement of internal revenue laws.

Although the IRS is a federal agency and operates nationwide, its main administrative functions are carried out through offices headquartered in the state of Maryland, with additional regional branches, processing centers, and taxpayer assistance offices located throughout the United States.

Today, the IRS employs over 85,000 people across various divisions, including tax examiners, revenue agents, compliance officers, legal professionals, IT and cybersecurity experts, and customer service representatives. These employees work together to serve millions of taxpayers each year by processing tax returns, issuing refunds, conducting audits, managing collections, and providing tax law guidance to individuals and businesses alike.

The Contact-Human-Resources.com website is dedicated to providing the most accurate, reliable, and up-to-date contact information about the IRS and many other major U.S. corporations and government entities. If you have any updated information about the IRS, corrections to suggest, or general feedback about this listing, please do not hesitate to contact us.

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