"Learn How to Report Tax Concerns to the IRS"

Understanding IRS Tax Concerns and Reporting Options

The Internal Revenue Service (IRS) handles millions of tax returns annually, and sometimes issues arise that need attention. A tax concern might include suspected fraudulent activity, unreported income you've observed, payroll tax problems, identity theft related to taxes, or errors on your own return. Understanding what constitutes a legitimate concern helps you decide whether reporting is appropriate and which IRS channel to use.

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According to the IRS, they received over 1 million reports through their various reporting channels in 2022. These reports ranged from tax fraud suspicions to identity theft incidents. Reporting a tax concern doesn't mean you're making an accusation—it means you're providing information that IRS agents can investigate further.

Your concern might involve someone else's tax filing, your own tax account, or general tax law violations. For example, you might notice a business in your neighborhood that appears to operate without reporting income, or you might discover that someone has filed a tax return using your Social Security number. Each situation has different reporting pathways and requirements.

The IRS distinguishes between different types of concerns. Tax fraud involves deliberately providing false information on a return to reduce taxes owed. Tax evasion means illegally not paying taxes that are due. Unreported income might be from cash businesses, side jobs, or investment activity. Identity theft occurs when someone uses your personal information on a tax return without permission. Understanding your specific concern helps you report it through the right channel.

Practical Takeaway: Before reporting, write down the details of your concern including dates, names, businesses involved, and what specifically prompted your concern. This preparation makes your report clearer and more useful to IRS investigators.

How to Report Tax Fraud Using Form 13909

Form 13909, also called the "Information Referral," is the primary document used to report suspected tax fraud to the IRS. This form allows individuals and businesses to submit detailed information about tax violations they've observed. The form is designed to gather specific information that IRS Special Agents can use to open investigations.

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You can obtain Form 13909 by visiting IRS.gov and searching for the form number, or by calling the IRS at 1-800-829-1040. The form is available as a fillable PDF that you can complete on your computer or print and fill by hand. There is no filing fee, and submission is completely free.

The form requests several categories of information. First, it asks for details about the person or business you're reporting, including their name, address, and any identifying numbers like Social Security numbers or Employer Identification Numbers (EINs). Next, it requests information about the suspected violation—what specifically makes you believe tax laws have been broken? You might describe unreported income, inflated deductions, hidden assets, or other irregularities.

When describing the suspected violation, provide concrete examples. Instead of writing "I think they don't report all their income," write "The business operates from a storefront on Main Street, and I've observed cash sales but have never seen them record these transactions in their books." If you have documents like photographs, receipts, or written records, you can reference these or attach copies (though original documents are not required).

After completing Form 13909, you can submit it by mail to your local IRS Criminal Investigation office. You can find the correct address by visiting IRS.gov/ci and locating your region. The form typically reaches investigators within a few weeks. You can also submit the form to the IRS by fax at 1-202-283-0030, though mail submission is more common.

Practical Takeaway: Create a cover letter to include with Form 13909 that briefly explains why you're submitting the report and lists any documents you're attaching. Keep a copy of everything for your records, along with the mailing date and tracking information if you use certified mail.

Reporting Tax Concerns Online and by Telephone

Beyond Form 13909, the IRS provides additional channels for reporting tax concerns. The agency's website includes an online whistleblower portal where you can submit information about tax violations. This option is particularly useful if you prefer not to mail physical documents or need to report concerns quickly.

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To report online, visit the IRS Criminal Investigation page at IRS.gov/ci. Look for the section labeled "Report Tax Fraud" or "Whistleblower Program." You'll be directed to an online form where you can enter your information, describe the suspected violation, and upload supporting documents if you have them. The online system assigns your report a reference number, which you should record for future reference.

Some tax concerns can also be reported by telephone. If you suspect tax fraud, you can call the IRS Criminal Investigation hotline. The specific phone number varies by region, which is why locating your regional IRS Criminal Investigation office on IRS.gov is the first step. When you call, have your information organized and be prepared to describe the suspected violation clearly and concisely.

For concerns related to your own tax account—such as suspicious activity on your Social Security number—you should contact the IRS directly at 1-800-829-1040. This number connects you to general IRS services where agents can help you report identity theft or account issues. If you believe your tax information has been compromised, request to speak with an Identity Theft Resolution Specialist.

For businesses reporting payroll tax concerns or employment tax violations, the IRS maintains separate reporting channels. These situations often involve employers not depositing withheld taxes or filing required employment tax returns. You can report these concerns through the standard Criminal Investigation channels, or contact the IRS Business & Specialty Tax Line at 1-800-829-4933.

Practical Takeaway: Before calling or submitting online, test the IRS website to ensure you have the correct contact information for your region. Phone wait times can be lengthy, so consider the online method if your concern is not time-sensitive and you have supporting documents to upload.

Understanding the IRS Whistleblower Program and Rewards

The IRS Whistleblower Program is a formal process that allows individuals to report tax violations and potentially receive a financial reward if the IRS collects taxes as a result of the information provided. This program is distinct from simple fraud reporting; it involves submitting a detailed claim and potentially receiving compensation.

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To participate in the Whistleblower Program, you must file Form 211, "Application for Award for Original Information." The program is governed by specific rules outlined in Internal Revenue Code Section 7623. If your information leads to a recovery of $2 million or more in taxes, penalties, and interest, you may be awarded between 15% and 30% of the amount recovered. For smaller recoveries, the reward calculation differs.

According to IRS data from recent years, the agency paid whistleblower awards totaling over $564 million between 2007 and 2023, with individual awards sometimes exceeding $100 million. The largest awards typically involve major corporations or individuals with substantial unreported income or significant tax evasion schemes.

The Whistleblower Program requires that your information be "original information"—meaning it's not already known to the IRS or obtained from public sources like news articles or court documents. You must provide specific, credible information about a substantial tax violation. The information should include details that would enable IRS investigators to locate, identify, and investigate the person or business involved.

To apply, complete Form 211 and submit it to the IRS Whistleblower Office. You can mail the form to: Internal Revenue Service, Whistleblower Office, 1111 Constitution Avenue NW, Washington, DC 20224. You can also submit Form 211 electronically through the IRS's secure online portal. The submission includes your personal information, a detailed description of the suspected violation, and documentation supporting your claim.

After you submit Form 211, the IRS will conduct an initial review to determine whether the information meets program requirements. This process can take several months. If the IRS pursues an investigation and ultimately collects taxes based on your report, the agency will contact you about your potential award. The actual amount depends on factors like the complexity of the case, your role in uncovering the violation, and the final amount collected.

Practical Takeaway: Document all information you submit, including the date you mailed Form 211 and any reference numbers provided. Keep records of any correspondence with the IRS. The Whistle