Where and how to report suspected tax evasion

You can report suspected tax evasion to the Internal Revenue Service using Form 211, also called the Claim for Reward for Original Information. This is the official channel the IRS uses to receive reports from the public. You submit it to the IRS Criminal Investigation division, which handles cases involving deliberate tax fraud rather than simple mistakes or underpayment.

You do not need to be a tax professional or accountant to file Form 211. You can be a former employee, a business competitor, a family member, or anyone else with knowledge of tax evasion. The form itself is straightforward: you describe what you know, provide as much detail as you can about the person or business, and explain why you believe tax evasion is occurring.

Form 211 is available on the IRS website at irs.gov. You can print it, fill it out by hand or computer, and mail it to the IRS Criminal Investigation office in your region. The IRS also accepts Form 211 by fax or email to specific addresses listed on the form itself. There is no filing fee.

Key Takeaways

  • Form 211 is the official IRS document for reporting tax evasion, and you submit it to the IRS Criminal Investigation division, not to a general IRS office.
  • You must provide specific facts about the suspected evasion—dates, amounts, names of people involved, and how you learned the information—rather than general accusations.
  • The IRS will not tell you the outcome of an investigation or whether charges were filed, because criminal investigations are confidential.
  • If the IRS pursues the case and recovers taxes as a result, you may receive a monetary reward of 15 to 30 percent of the recovery, though only if the amount exceeds $2 million.
  • You can report anonymously by having a lawyer or accountant submit the form on your behalf, though the IRS may contact you for more information regardless.

What information you need to include on Form 211

The IRS needs specific facts, not suspicions. Write down the name and address of the person or business you are reporting. If you know their Social Security number or Employer Identification Number (EIN), include that. Provide the years in which you believe evasion occurred—for example, "2021 and 2022" rather than "recent years."

Describe what you observed or learned that makes you believe taxes were evaded. Examples include: unreported income you saw on documents, cash payments that were never recorded, false deductions claimed on tax returns you saw, or offshore accounts you have knowledge of. Be as specific as possible about amounts, dates, and how you came to know this information. If you overheard a conversation, say so. If you saw a bank statement, say what it showed and when you saw it.

Explain why you believe this constitutes tax evasion rather than a mistake or a difference of opinion about what is deductible. The IRS distinguishes between negligence (carelessness) and fraud (intentional deception). If the person deliberately hid income or claimed false deductions knowing they were false, that is evasion. If they made an honest error, that is not.

The difference between reporting to the IRS and reporting to other agencies

The IRS Criminal Investigation division handles federal tax crimes. If you report to them using Form 211, they will investigate whether federal tax law was broken. This is separate from state tax evasion, which you would report to your state's tax authority or department of revenue.

If the suspected evasion involves money laundering, fraud, or other crimes beyond tax law, you can also report to the FBI or the Department of Justice. However, Form 211 to the IRS is the standard route for tax-specific cases. The IRS Criminal Investigation office will refer cases to other agencies if the facts warrant it.

You can report the same suspected evasion to multiple agencies. Reporting to the IRS does not prevent you from also reporting to state tax authorities or law enforcement. Each agency investigates independently.

What happens after you submit Form 211

After you mail or email Form 211, the IRS will send you a letter acknowledging receipt. This letter will include a case number. Keep this number for your records. The IRS will not tell you whether an investigation was opened, whether charges were filed, or what the outcome was. Criminal investigations are confidential, and the IRS does not share details with the person who reported the suspected evasion.

The IRS Criminal Investigation division receives thousands of reports each year and prioritizes cases based on the amount of money involved and the strength of the evidence. A report with specific facts and large dollar amounts is more likely to be investigated than a vague accusation. However, even strong reports may not result in prosecution if resources are limited or if the IRS decides other cases are higher priority.

Investigation timelines vary widely. Some cases are resolved in months; others take years. You will not receive updates during the process. If you want to follow up, you can contact the IRS Criminal Investigation office using the case number from your acknowledgment letter, but they may not be able to discuss the status.

Reward amounts and how they are calculated

If your report leads to a successful prosecution and the IRS recovers taxes, penalties, and interest as a result, you may receive a monetary reward. The reward is calculated as a percentage of what the IRS recovers. The percentage ranges from 15 to 30 percent, depending on the circumstances of the case and the quality of the information you provided.

However, there is a threshold: you only receive a reward if the IRS recovers more than $2 million. If the recovery is $2 million or less, you receive no reward, even if the case was successful. This threshold is set by federal law and does not change.

The IRS does not tell you in advance what your reward will be or even whether you will receive one. The reward is determined after the case is closed and the recovery is finalized. If you are may have access to to a reward, the IRS will contact you. Rewards are paid by check from the U.S. Treasury and are subject to federal income tax.

Reporting anonymously and protecting your identity

You can submit Form 211 anonymously by having a lawyer or accountant submit it on your behalf. Use their name and address as the contact information on the form. However, the IRS may still contact you for additional information or clarification, and you would need to respond to move the investigation forward. Complete anonymity is difficult to maintain if the IRS needs more details from you.

If you are reporting a current or former employer and fear retaliation, consider consulting an employment lawyer before reporting. Some whistleblower protection laws apply to tax evasion reports, but the scope and strength of these protections vary by situation. A lawyer can advise you on your specific circumstances and help you understand what protections may apply.

If you report anonymously through a lawyer, the lawyer can also help you decide what information to include and how to present it in a way that is clear and persuasive to the IRS. This can increase the likelihood that your report will be taken seriously.

When to report and common reasons people report tax evasion

People report tax evasion for different reasons. Some are former employees who discovered their employer was not paying taxes on income. Others are business partners or spouses who learned about hidden accounts or unreported income. Some are competitors who suspect a rival business is gaining an unfair advantage by not paying taxes. Some are citizens who simply believe tax evasion is wrong and want to report it.

There is no time limit on reporting. You can report suspected evasion from years ago. However, the IRS has a statute of limitations: they generally cannot prosecute tax crimes that occurred more than six years ago, though there are exceptions for cases involving substantial underreporting of income. If you are reporting very old evasion, mention in your Form 211 that you understand the timing may affect whether prosecution is possible.

You do not need to report to your employer, your state, or anyone else first. You can go directly to the IRS. If you have already reported to another agency or to law enforcement, mention that in your Form 211 so the IRS knows the case may already be under investigation elsewhere.

Frequently Asked Questions

Can I report someone anonymously and still receive a reward?

Yes, but with a complication. You can submit Form 211 anonymously through a lawyer, but to receive a reward, the IRS will need to contact you to verify your identity and process the payment. You would need to reveal yourself at that point. If you want to remain completely anonymous, you would forgo the reward.

What if I am not sure whether what I saw is actually tax evasion?

Submit the report anyway. Describe exactly what you observed and let the IRS determine whether it constitutes evasion. It is better to report something that turns out to be a misunderstanding than to stay silent about genuine fraud. The IRS receives reports of varying quality and investigates the ones with the strongest evidence.

Will the person I report know it was me?

Not necessarily. If you submit Form 211 anonymously through a lawyer, your identity is protected. If you submit it in your own name, the IRS will not tell the subject of the investigation who reported them, but if the case goes to trial, you may be called as a witness and your identity would become known at that point.

How long does it take to get a reward after the IRS recovers money?

There is no set timeline. After the IRS closes the case and finalizes the recovery, they calculate your reward and contact you. This can take months or years after the actual recovery. You will not receive a reward until the IRS contacts you and processes the payment.

Can I report someone for not paying taxes if they owe money but are on a payment plan?

No. A payment plan means the person has acknowledged the debt and is paying it. Tax evasion is deliberate nonpayment or underreporting of taxes owed. If someone is working with the IRS to pay what they owe, that is not evasion and should not be reported under Form 211.