Learn How to Report a Business to the IRS

Understanding Why You Might Report a Business to the IRS

The Internal Revenue Service (IRS) is the federal agency responsible for collecting taxes and enforcing tax laws in the United States. Businesses are required to pay various types of taxes, including income tax, employment tax, and excise tax. When a business fails to follow these tax laws, it can affect the economy and harm honest business owners who do pay their taxes correctly.

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You might consider reporting a business to the IRS if you have reason to believe it is not paying the taxes it owes. Common situations that lead to reports include a business paying employees in cash without reporting wages, underreporting income on tax returns, or operating without a business license while conducting commercial activities. Another reason might be if a business is claiming false deductions or credits to reduce the amount of tax it owes. These actions are violations of federal tax law.

Private citizens report suspected tax violations to the IRS regularly. According to the IRS, the agency received thousands of reports from the public in recent years. Not all reports result in investigations, but the IRS uses reports as one tool to identify potential tax compliance problems. The agency has limited resources, so it prioritizes cases that involve larger amounts of money or businesses operating across multiple states.

Understanding the difference between tax avoidance and tax evasion is important. Tax avoidance refers to using legal methods to pay less tax, such as claiming deductions you are entitled to. Tax evasion is illegal and involves deliberately not paying taxes owed through deception or fraud. The IRS pursues tax evasion cases more aggressively than situations where someone may have misunderstood tax rules.

Practical takeaway: Before reporting a business, consider whether you have direct knowledge of actual violations. Suspicions based on rumors or incomplete information may not lead anywhere. The IRS investigates reports that contain specific details about what the business did wrong and when it happened.

How to File a Report Using Form 13909

The official way to report suspected tax fraud or violations by a business is by submitting Form 13909, titled "Information Regarding Potential Tax Fraud Activity." This form is the IRS's standard tool for receiving reports from the public. You can obtain the form through the IRS website, by calling the IRS, or by visiting an IRS office in person. The form is also known as the "Whistleblower Report Form," though that name typically refers to a different program for large-scale violations.

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Form 13909 asks you to provide information about the business you are reporting, including its name, address, and the type of tax violation you suspect. You will need to describe what the business is doing wrong and provide specific examples or dates when possible. The more detailed your information, the more useful it is to the IRS. For example, rather than saying "the business pays workers cash," you might write "on June 15, 2023, I saw the owner pay five workers in cash at the end of the day without issuing pay stubs."

The form also asks whether you have documents supporting your report, such as photographs, emails, or written records. If you do have supporting materials, you should not include them with the form. Instead, the IRS will request them if they decide to investigate. Submitting documents without being asked can create privacy concerns and may slow processing.

You have the option of filing the form anonymously. The IRS will not disclose your identity unless required by law in connection with a criminal prosecution. Many people choose to remain anonymous to avoid potential conflict or retaliation, even though federal law prohibits retaliation against someone for reporting suspected tax violations.

You can file Form 13909 by mail or online. The online submission option is available through the IRS website and allows you to submit the form securely. Mailing the form requires you to send it to the IRS office address listed on the form itself. Processing times vary, but the IRS typically acknowledges receipt within a few weeks.

Practical takeaway: Write clearly and organize your information before submitting the form. Include dates, names of people you observed, and descriptions of specific actions. Vague or unclear reports are harder for the IRS to investigate.

What Information the IRS Needs From You

When you report a business to the IRS, providing the right information makes your report more useful and increases the chance the IRS will investigate. The agency needs enough detail to locate the business and understand what violation you are reporting. Without sufficient information, your report may be filed away without action.

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Start with identifying the business itself. Provide the business name, the owner's name if you know it, the street address, phone number, and website if it has one. If the business operates under multiple names or locations, mention that. The IRS uses this information to match the report to existing tax records. If you only know a partial address or a business name that might not be official, provide what you do know. The IRS has access to business databases and may be able to track down the business even with incomplete information.

Next, explain what tax violation you suspect. Describe the specific actions you observed or learned about. Examples include: the business is not reporting income from cash sales, the owner is claiming personal expenses as business deductions, employees are being paid under the table without tax withholding, the business is not paying payroll taxes, or the owner is reporting false charitable contributions. The more specific you can be, the stronger your report becomes. For instance, saying "I worked there and never received a W-2 form or pay stub" is more useful than saying "I think they are not paying taxes."

Dates and timelines help the IRS determine the scope of the violation. Note when you first observed the problem, when it occurred most recently, and whether it has been ongoing. If you worked for the business, indicate the dates of your employment. If you know how often violations occurred—for example, "every Friday the owner paid cash to workers"—include that information.

The IRS also benefits from knowing how you learned about the violation. Did you work for the business? Were you a customer? Did someone tell you? Are you basing this on documents you saw? This context helps investigators assess the reliability of your information. Reports from people with direct knowledge carry more weight than secondhand accounts.

You do not need to have absolute proof to file a report. The IRS investigates based on reasonable suspicion. However, if you do have documents, photographs, or other evidence, keeping that information available is helpful. Do not mail it with the form, but be prepared to provide it if the IRS contacts you during an investigation.

Practical takeaway: Write down everything you remember about the violation before filling out the form. Include specific dates, names, amounts if you know them, and a chronological description of what happened. This preparation makes your report clearer and more persuasive.

The IRS Investigation Process and What Happens Next

After you submit a report, the IRS does not automatically launch an investigation. The agency receives thousands of reports annually and must prioritize cases based on several factors. Understanding how the IRS decides which reports to investigate can help you understand what might happen with your report.

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The IRS primarily focuses on cases involving significant amounts of money or systematic violations by businesses. A large restaurant chain underreporting sales by hundreds of thousands of dollars is more likely to be investigated than a small business with a minor recordkeeping error. Similarly, a business operating entirely off the books will receive more attention than one that files returns but may have inflated deductions. The IRS also prioritizes cases involving employment tax violations because these affect Social Security and Medicare trust funds.

When the IRS decides to investigate, the process can take months or years. Revenue agents from the IRS will examine the business's tax returns, financial records, and bank statements. They may interview the business owner, employees, and customers. If the agent finds evidence of intentional tax evasion, the case may be referred to the IRS Criminal Investigation division. This division has special agents who investigate serious cases that may result in criminal prosecution.

Criminal tax investigations are handled differently from civil investigations. In a criminal case, the government must prove guilt beyond a reasonable doubt, a much higher standard than in civil cases. Criminal cases can result in prison sentences, fines, or both. According to IRS data, the agency initiates hundreds of criminal investigations annually and successfully prosecutes a portion of these cases.

You will likely not be told the outcome of your report. The IRS maintains confidentiality about its investigations and generally does not provide updates to people who file reports. This is true