What triggers an IRS investigation?

Asked by: Kelsie Nader  |  Last update: September 18, 2025
Score: 4.9/5 (13 votes)

Unreported Income Taxable income that is not reported on your tax return is likely to trigger an IRS audit. Common kinds of unreported income include: Income from a hobby or side hustle. Freelance income. Cash income (including tips)

What raises red flags for the IRS?

Another easily avoidable audit red flag is rounding or estimating dollar amounts on your tax return. Say, for instance, you round $403 of tip income to $400, $847 of student loan interest to $850, and $97 of medical expenses to $100. The IRS is going to see all those nice round numbers and think you're making them up.

Why would the IRS investigate you?

The Internal Revenue Service Criminal Investigation Division conducts criminal investigations regarding alleged violations of the Internal Revenue Code, the Bank Secrecy Act and various money laundering statutes. The findings of these investigations are referred to the Department of Justice for recommended prosecution.

What is most likely to trigger an IRS audit?

Large changes of income

Probably one of the main IRS audit triggers is a large change of income.

What events might cause an IRS examination?

Top IRS audit triggers
  • Math errors and typos. The IRS has programs that check the math and calculations on tax returns. ...
  • High income. ...
  • Unreported income. ...
  • Excessive deductions. ...
  • Schedule C filers. ...
  • Claiming 100% business use of a vehicle. ...
  • Claiming a loss on a hobby. ...
  • Home office deduction.

What Triggers an IRS audit in 2023

37 related questions found

What is suspicious activity to the IRS?

The purpose of the Suspicious Activity Report (SAR) is to report known or suspected violations of law or suspicious activity observed by financial institutions subject to the regulations of the Bank Secrecy Act (BSA).

What is the IRS 6 year rule?

6 years - If you don't report income that you should have reported, and it's more than 25% of the gross income shown on the return, or it's attributable to foreign financial assets and is more than $5,000, the time to assess tax is 6 years from the date you filed the return.

What income is most likely to get audited?

If you make over $500,000 per year, your audit likelihood is greater than the likelihood for the general population. As shown in the chart above, 0.7% of filers who earned between $500,000 and $1,000,000 were audited.

How much income can go unreported?

For the 2022 tax year, the gross income threshold for filing taxes varies depending on your age, filing status, and dependents. Generally, the threshold ranges between $12,550 and $28,500. If your income falls below these amounts, you may not be required to file a tax return.

How does IRS pick who gets audited?

Selection for an audit does not always suggest there's a problem. The IRS uses several different selection methods: Random selection and computer screening - sometimes returns are selected based solely on a statistical formula. We compare your tax return against "norms" for similar returns.

How will I know if the IRS is investigating me?

Signs that the IRS might be investigating you. Abrupt change in IRS agent behavior. If an IRS agent who had been actively pursuing your IRS tax debt suddenly stops contacting you and does not return your calls, it could be an indication that your case has been referred to the Criminal Investigation Division (CID).

Does the IRS look at your bank account during an audit?

The Short Answer: Yes. Share: The IRS probably already knows about many of your financial accounts, and the IRS can get information on how much is there. But, in reality, the IRS rarely digs deeper into your bank and financial accounts unless you're being audited or the IRS is collecting back taxes from you.

What is considered tax evasion?

Tax evasion is the illegal non-payment or under-payment of taxes, usually by deliberately making a false declaration or no declaration to tax authorities – such as by declaring less income, profits or gains than the amounts actually earned, or by overstating deductions. It entails criminal or civil legal penalties.

What looks suspicious to the IRS?

Unreimbursed Employee Expenses

Unreimbursed employee expenses are perceived to be one of the most common IRS red flags. The IRS frequently reviews unreimbursed employee expenses in audits, as they are widely considered a high abuse category for W2 employees.

What happens if you are audited and found guilty?

The taxpayer's tax avoidance actions must go further to indicate criminal activity. If you face criminal charges, you could face jail time if found guilty. Tax fraud comes with a penalty of up to three years in jail. Tax evasion comes with a potential penalty of up to five years in jail.

Who gets audited the most?

The two groups most likely to get audited are those earning more than $10 million and taxpayers who claim the Earned Income Tax Credit, who tend to be low- or middle-income workers.

What happens if you accidentally don't report income?

An accuracy-related penalty applies if you underpay the tax required to be shown on your return. Underpayment may happen if you don't report all your income or you claim deductions or credits for which you don't qualify.

How does the IRS catch you?

Computer Data Analysis. The IRS uses an Information Returns Processing System to match information sent by employers and other third parties to the IRS with what is reported by individuals on their tax returns. 3 The matching is based on information returns submitted to the IRS on: W-2s (reporting wages)

What does the IRS know about your side hustle?

Whether someone is having fun with a hobby or running a business, if they are paid through payment apps for goods and services during the year, they may receive an IRS Form 1099-K for those transactions. These payments are taxable income and must be reported on federal tax returns.

What happens if you get audited and don't have receipts?

Missing receipts during an audit can end up costing you a lot of money, either through CPA fees (to put it all together to prove to the IRS that your expenses were legit), through disallowed deductions that increase your taxable income, through expenses that the IRA agent determines were actually payments to executives ...

How far back can the IRS audit you?

Most IRS audits reach back a maximum of three years, meaning any tax returns you filed during the previous three years may be included in the audit. However, while three years is the typical cut-off point, there are also some situations in which the IRS will extend or even double the standard audit period.

Will the IRS catch a missing 1099?

Will the IRS catch a missing 1099? The IRS knows about any income that gets reported on a 1099, even if you forgot to include it on your tax return. This is because a business that sends you a Form 1099 also reports the information to the IRS.

Does the IRS forgive debt after 10 years?

The IRS has a limited window to collect unpaid taxes — which is generally 10 years from the date the tax debt was assessed. If the IRS cannot collect the full amount within this period, the remaining balance is forgiven. This is known as the "collection statute expiration date" (CSED).

Should I keep grocery receipts for taxes?

Keeping grocery receipts becomes crucial for providing evidence of costs in these scenarios. Preserving grocery receipts for tax purposes is generally unnecessary for individual taxpayers, as personal expenses like groceries are typically not tax-deductible.

Can IRS come after you after 5 years?

Generally, under IRC § 6502, the IRS can collect back taxes for 10 years from the date of assessment. The IRS cannot chase you forever and, due to the 1998 IRS Reform and Restructuring Act, taxpayers have a little relief from the IRS collections division's pursuit of an IRS balance due.