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Updated: Mar 15, 2024

10 Biggest IRS Audit Triggers

The IRS only investigates about 0.6% of tax returns. These red flags increase your chances of being audited. Find out what they are.
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IRS Audit

Do you ever wonder how the IRS chooses which taxpayers it wants to audit? While the IRS audits only about 1 percent of all individual tax returns annually, you don’t want to be one of the unlucky few to get audited.

The IRS says being selected for an audit does not always suggest that an error has been made. Returns are selected using a variety of methods, including:

  • Random selection and computer screening -- sometimes returns are selected based solely on a statistical formula.
  • Document matching -- when pay records, such as Forms W-2 or Form 1099, don't match the information reported.
  • Related examinations -- returns may be selected for audit when they involve issues or transactions with other taxpayers, such as business partners or investors, whose returns were selected for audit.

Avoid getting audited, here are a few red flags you should watch out for:

1. Making mistakes

Even if you do so by accident, errors on your tax return will give the IRS pause. Putting down the wrong Social Security Number and calculating something incorrectly are common mistakes that might cause the IRS to take a second look. Be sure that you enter the correct information and double check everything.

2. Incomplete information

It’s easy to make mistakes on your return if you’re filling it out yourself. And one mistake that will raise a red flag for the IRS is if your return is missing information. The IRS might wonder what other information is missing and audit you.

3. High income

If you make more than $500,000 your chances of being audited increase, a recent report on the IRS’ enforcement activity said. People with incomes of $500,000 or more had an audit rate of 0.53 percent. That’s about one out of every 188 returns. And the more you earn, the more likely you will be audited.

4. Being too charitable

Giving or donating to charity is commendable, but don’t over-exaggerate how much you give. The IRS is aware of how much people around your income level donate, so if you report giving away much more you’re going to raise some eyebrows.

5. Not reporting all taxable income

You must report all 1099 and W-2 forms. Remember, the IRS gets copies of everything you receive. Failure to report all your taxable income may cause red flags.

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6. Excessive deductions

By all means, deduct everything you’re allowed to. But don’t overstate your deductions or lie about them. The IRS is well aware of what is outside the norm for people at your income level.

7. Home office deductions

Be careful about deducting for having a home office. As we mentioned, deductions raise eyebrows. To qualify for this deduction, your home office space must be used exclusively as your place of business. If you’re entitled to the deduction, take it -- but be prepared to prove that you regularly use the space for your business. And be sure to only deduct items that were used for your business.

8. Owning a small business

If your business runs mostly on cash or cash incentives -- you’re a taxi driver, car washer, work in a hair salon or bar -- you’re more likely to get audited. Workers in these professions tend to not accurately report all of their taxable income, like a number of tips earned. If you are the owner a small business, be sure to report all the income you’ve received to avoid getting audited. Don’t push the envelope. Also, don’t try to pass off a hobby as a business just to try to get a deduction.

9. Not reporting a foreign bank account

Foreign bank accounts have come under increasing scrutiny in the last few years. The IRS has actively tried to get foreign banks to disclose account information and launched initiatives encouraging tax evaders to come clean. If you’ve got a foreign bank account and fail to report it, you could face severe penalties if the IRS finds out.

10. Not filing

Clearly, you’re asking to be audited if you’ve filed returns in the past, but stop doing so. Maybe you are unsure of how you will pay your tax bill, but you’ll be charged with late payment penalties if you miss the filing deadline. And you could get into even more financial trouble if you’re identified as a non-filer.

If you do pull a fast one of the IRS, think twice before you brag about it. Many cases start out with a whistleblower reporting how you failed to pay the taxes you owed. Why? Because the IRS offers a reward of up to 30 percent on the additional tax, penalty and other amounts it collects from the tax evader.

If you are audited, you’ll be notified by mail or telephone -- not email. The length of the audit will depend on its type, the complexity of items being reviewed, the availability of information being requested, the availability of both parties for scheduling of meetings and your agreement or disagreement with the findings. If you are audited, know that you do have rights:

  • A right to professional and courteous treatment by IRS employees.
  • A right to privacy and confidentiality about tax matters.
  • A right to know why the IRS is asking for information, how the IRS will use it and what will happen if the requested information is not provided.
  • A right to representation, by oneself or an authorized representative.
  • A right to appeal disagreements, both within the IRS and before the courts.

For more information on what to expect if you’re audited, visit the IRS website.

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