What triggers an IRS refund review?

Asked by: Liza Schmitt  |  Last update: July 27, 2026
Score: 4.8/5 (45 votes)

IRS refund reviews are triggered by automated systems identifying discrepancies, such as unreported income (mismatched W-2s/1099s),math errors, or inconsistent data. Common triggers include unusually high deductions compared to income, claiming specific tax credits like the Earned Income Tax Credit (EITC), self-employment losses, or suspected identity theft.

Why would my refund be under review?

Under Review Status: When your tax return is ``under review,'' it means that the IRS is performing additional checks for accuracy, completeness, or potential issues such as fraud. Interest: After the 45-day window, interest starts accruing on your tax refund until it's paid out.

How long will my refund be in 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.

Why is IRS randomly selected for review?

District offices select returns randomly sometimes for special research programs, but generally the returns are selected because they have good audit potential. The potential is discovered by a computerized system called the Discriminant Function System (DIF). In most cases, the decisionmaker is not the auditor.

How long can the IRS hold your refund for review?

If the IRS is reviewing your return, it may have questions about your wages and withholding, or credits or expenses shown on your tax return. The review process could take anywhere from 45 to 180 days, depending on the number and types of issues the IRS is reviewing.

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What are some red flags to the IRS for tax refunds?

Ten Red Flags that Could Trigger an IRS Audit

  • Large charitable donations. ...
  • Gambling losses. ...
  • Unreported income. ...
  • Rental income and deductions. ...
  • Home office deductions. ...
  • Casualty losses. ...
  • Business vehicle expenses. ...
  • Cryptocurrency transactions.

What gets you flagged for an IRS audit?

Audit odds are low, but the IRS uses automated programs to identify issues. Common red flags include unreported income and excessive deductions. High earners and digital currency users may face extra scrutiny. Maintaining strong records and specifical documentation can help prevent issues.

Can I speed up my IRS refund review?

What should I do? Request an expedited refund by calling the IRS at 800-829-1040 (TTY/TDD 800-829-4059). Request a manual refund expedited to you.

What does refund reviewed mean?

The stages of an IRS refund are: (1) Return Received, where the IRS acknowledges receipt of your return; (2) Return Reviewed, where the return is checked for accuracy; and (3) Refund Approved/Sent, where the refund amount is finalized and issued.

Is an IRS review the same as an audit?

You may face an IRS audit after an IRS review. If the IRS reviews your information and detects inaccuracies in your tax returns, it may conduct a comprehensive audit to look into the matter further.

What does it mean if the IRS is reviewing my refund?

Why is my return being reviewed? (updated Aug. 7, 2024) While we accept most tax returns as filed, we select some for review. The IRS reviews some federal tax returns to determine if income, expenses, and credits are reported accurately.

How do I know if the IRS is auditing me?

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.

Does IRS manually review returns?

Employees will review and either manually release the refund or confirm the error. If an error is confirmed, a notice will be sent to the taxpayer either requesting additional information or informing the taxpayer the error has been corrected through the IRS's math error authority.

How long does it take for a refund to be reviewed?

According to the IRS, most refunds are funded within 21 days of filing. However, you may receive your refund at a different time depending on how you choose to receive it or if IRS finds issues with accuracy, such as reconciling the amount of stimulus payment or advanced child tax credit received in 2021.

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. 

When to worry about tax refunds?

Your refund may also be delayed if numbers on your return don't match documents the IRS received about your income. Common mistakes can also cause delays, such as math errors or typos on your Social Security number, or if the direct deposit account doesn't match the filing status on your return.

What are common reasons for IRS reviews?

Common IRS audit triggers

  • Making math errors.
  • Failing to report income.
  • Claiming too many charitable donations.
  • Reporting too many losses on a Schedule C.
  • Deducting too many business expenses.
  • Claiming a home office deduction.
  • Using nice, neat, round numbers.

Is the IRS randomly selected for review?

Random selection: Sometimes, returns are selected for review as part of the IRS's routine checks. Prior issues: Previous issues or audits can lead to increased scrutiny in subsequent years. Mathematical errors: Simple arithmetic mistakes can prompt a review.

Why is my tax return taking so long under review?

Some tax returns need extra review for accuracy, completeness, and to protect taxpayers from fraud and identity theft. Returns that fall into this category can take longer to process. Disaster-related returns may take longer to process than tax returns not claiming disaster relief.

What triggers a CP05 letter?

The CP05 notice is mailed to taxpayers to notify them that the IRS needs more time to verify your income, income tax withholding, tax credits and/or business income.

How long does the IRS have to complete a review?

Legal answer: Three years

Technically, except in cases of fraud or a back tax return, the IRS has three years from the date you filed your return (or April 15, whichever is later) to charge you (or, “assess”) additional taxes. This three-year timeframe is called the assessment statute of limitations.