How long does it take IRS to investigate?

Asked by: Guiseppe Wiza III  |  Last update: July 24, 2026
Score: 5/5 (72 votes)

An {L:IRS criminal investigation} typically takes 12 to 24 months (1-2 years), but can range from several months to even longer, depending on complexity, caseload, and cooperation; the process is lengthy as agents gather extensive evidence, and taxpayers generally cannot track the status, though civil audits might resolve faster, while complex identity theft cases currently see extreme delays.

How long does the IRS take to investigate?

With a 90% conviction rate to protect, they dont bring cases they might lose. They take as long as necessary to make sure theyll win. That “luxury of time” is paid for with your anxiety. The typical IRS criminal investigation takes 12 to 24 months to complete.

How do you know if the IRS is investigating you?

You know the IRS might be investigating you through official mail (first contact), phone calls (often with automated messages to IRS.gov), or in-person visits, but signs of a criminal probe include contact with IRS Criminal Investigation (CI) agents, subpoenas to you or your bank, questions to your accountant/bank, unusual account activity (freezing/refusing transactions), or agents suddenly going silent after an audit. Key indicators are official IRS letters, contact from CI special agents, third-party inquiries, and formal summonses for records, signaling serious scrutiny beyond a simple audit. 

What triggers an IRS criminal investigation?

The IRS may initiate criminal proceedings if they suspect a taxpayer has willfully committed tax fraud or tax evasion. This may involve falsifying information on federal tax returns, hiding income, or claiming false deductions.

What are common red flags for IRS investigators?

IRS Warning Signs of Federal Tax Evasion

  • Failing to file tax returns.
  • Having bank deposits that far surpass the taxpayer's reported income.
  • Omitting or understating income.
  • Reporting sales less than the sum of your 1099's.
  • Large numbers of cash deposits or deposits in excess of 10,000.
  • Running a cash intensive business.

Inside Scoop How IRS Criminal Investigations Start

31 related questions found

What looks suspicious to the IRS?

Not reporting all of your income is an easy-to-avoid red flag that can lead to an audit. Taking excessive business tax deductions and mixing business and personal expenses can lead to an audit. The IRS mostly audits tax returns of those earning more than $200,000 and corporations with more than $10 million in assets.

Will you be notified if you are under investigation?

The government has no legal obligation to notify you that you're under investigation. There is no constitutional right to know that prosecutors are building a case against you.

How long do criminal investigations usually take?

Police investigations have no set duration and can vary dramatically depending on the case complexity, available evidence, and the specific crime under investigation.

How to tell if the IRS is auditing you?

Remember, you will be contacted initially by mail. The IRS will provide all contact information and instructions in the letter you receive. If we conduct your audit by mail, our letter will request additional information about certain items shown on the tax return such as income, expenses, and itemized deductions.

How long does it take to investigate tax evasion?

The time it takes HMRC to complete their investigation depends on the detail of the evidence available to them and the severity of the suspected tax fraud. It can take as little as 3 months for an aspect enquiry, to 12 months or longer for a full enquiry.

How do you know if you are under federal investigation?

1: You Receive a Target Letter. A target letter is an official document from the U.S. Attorney's Office informing you that: You are the target of a federal grand jury investigation. You may be charged with a federal crime.

Are IRS investigations public record?

All IRS records are public: Many IRS records are confidential and protected by law. IRS records can be accessed without a valid reason: Accessing IRS records typically requires a legitimate purpose, such as an audit or investigation.

How long can my refund be under review?

The IRS has no maximum time limit when it comes to processing tax refunds, but after 45 days, it is required to pay interest on your refund. In most cases, you can expect the IRS to issue your tax refund within 21 days of filing your tax return.

What rights do I have during an IRS investigation?

Here are the first five rights along with more information about each one:

  • The Right to Finality. ...
  • The Right to Privacy. ...
  • The Right to Confidentiality. ...
  • The Right to Retain Representation. ...
  • The Right to a Fair and Just Tax System.

What are 5 red flag symptoms?

Here's a list of seven symptoms that call for attention.

  • Unexplained weight loss. Losing weight without trying may be a sign of a health problem. ...
  • Persistent or high fever. ...
  • Shortness of breath. ...
  • Unexplained changes in bowel habits. ...
  • Confusion or personality changes. ...
  • Feeling full after eating very little. ...
  • Flashes of light.

What happens if you owe the IRS more than $25,000?

The IRS escalates its collection efforts when the amount owed exceeds $25,000, which can result in severe penalties such as asset seizure, bank levy, wage garnishment, and even passport revocation. If you're unsure how much you owe, you can find more information and guidance here.

What are the 7 steps of investigation?

The 7 steps of a crime scene investigation, often called the "7 S's," provide a structured approach: Secure the scene, Separate witnesses, Scan the scene, See the scene (photograph/document), Sketch the scene, Search for evidence, and Secure/Collect evidence, ensuring safety, witness integrity, thorough documentation, and proper preservation of physical clues for later analysis.
 

How long does a pending investigation take?

In California, the DA can take weeks or months to make a decision. If your name is part of a report, there's a chance you're under investigation, even if no one has formally told you.

Can I look up if I'm being investigated?

The Freedom of Information Act allows any person—except fugitives, federal agencies, and foreign intelligence agencies—to request information about organizations, businesses, investigations, historical events, incidents, groups, or deceased persons.

What not to say during investigation?

Don't Express Personal Opinions or Judgments. The investigation is not about how you feel or what you think. Its purpose is to collect facts and make a decision based on those alone.

What triggers an investigation?

Most investigations begin when someone (an employee, manager, or even a client) reports conduct that breaks the rules. Common triggers for workplace investigations include: Harassment or discrimination complaints. Allegations of theft or fraud.