The IRS catches tax mistakes primarily through automated, data-driven systems that compare filed returns against third-party reports (W-2s, 1099s) and identify anomalies using algorithms. The Information Returns Processing System flags income mismatches, while the Error Resolution System (ERS) detects math errors and missing forms.
Does the IRS Catch All Mistakes? No, the IRS probably won't catch all mistakes. But it does run tax returns through a number of processes to catch math errors and odd income and expense reporting.
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Businesses that show losses are more likely to be audited, especially if the losses are recurring. The IRS might suspect that you must be making more money than you're reporting. Otherwise, why would you stay in business? Most likely to be audited are taxpayers reporting small business losses.
An IRS notice may alert you to a mistake on your tax return or that it's being audited. You can verify the information that was processed by the IRS by viewing a transcript of the return to compare it to the return you may have signed or approved. You can access your tax records through your account.
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.
Here's a list of seven symptoms that call for attention.
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.
Avoid These Common Tax Mistakes
If you make a mistake on your tax return, you usually correct it by filing Form 1040-X, Amended U.S. Individual Income Tax Return, to adjust income, deductions, or credits, but the IRS often corrects simple math errors or missing forms automatically; if you owe more tax, you'll incur interest and penalties, so fixing errors promptly with an amendment can reduce costs, but you must file it within the specified time frame, usually three years from the original filing date.
Threats of civil and criminal penalties are not enough to deter some people from cheating, so the IRS employs ways to identify individuals who skip out on their taxes. It is believed that the IRS can track credit card transactions and other electronic information, using this added data to find tax cheats.
A portion of your wages are protected from levy. The protected amount is the equivalent to the standard deduction, plus any deductions for personal exemptions. The IRS can't seize certain personal items, such as necessary schoolbooks, clothing, undelivered mail and certain amounts of furniture and household items.
The IRS and its authorized private collection agencies will never ask a taxpayer to pay using any form of pre-paid card, store or online gift card. Taxpayers can review the IRS payments page at IRS.gov/payments for all legitimate ways to make a payment.
If there is a potential discrepancy, a tax examiner will look further into your reported income. They'll compare the information reported to the IRS by employers, banks, businesses, and of payers to the income, credits, and deductions on your report.
One-time forgiveness, officially known as First-Time Penalty Abatement (FTA), is an IRS program that allows qualified taxpayers to have certain penalties removed from their tax accounts.
It seems obvious, but we can't leave it off the list because it's one of the top reasons for audits. Math errors: Simple tax mistakes like small mathematical and clerical errors, such as transposing digits or typos, inconsistent entries, or missing taxpayer identification numbers.
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.
If the IRS is reviewing your return, the review process could take anywhere from 45 to 180 days, depending on the number and types of issues the IRS is reviewing. Follow these steps if you know you made a mistake, before the IRS contacts you.